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NSW Contractors and Subcontractors Guide to
Security of Payment Law
Protect your payment rights in the construction supply chain with SOPA's powerful enforcement mechanisms.
You can be confident that you are getting the right legal advice.
Contractors and subcontractors in NSW face unique challenges when securing payment for their work. The Building and Construction Industry Security of Payment Act 1999 (SOPA) provides statutory rights to progress payments and fast-track dispute resolution, regardless of your position in the contractual chain. Whether you are working directly for a head contractor, as a subcontractor lower in the chain, or even without a written contract, SOPA gives you powerful tools to recover unpaid money. This comprehensive guide explains your rights under SOPA and how to exercise them effectively to maintain cashflow and protect your business.
BOOK YOUR FREE FIRST CONSULTUnderstanding Your Rights as a
Contractor or Subcontractor
Contractors and subcontractors occupy critical positions in the construction supply chain, often performing specialised work or supplying essential materials and labour. SOPA recognises that payment problems anywhere in the chain can cascade down, threatening the financial viability of those further down the supply chain. The legislation provides you with the same fundamental rights as head contractors, ensuring you can enforce payment regardless of whether disputes exist higher up the contractual chain.
Your Position in the Payment Chain
Understanding your position in the contractual structure is important for exercising your SOPA rights effectively. You may be a direct subcontractor to the head contractor, a subcontractor to another subcontractor further down the chain, or even a supplier of materials or labour. SOPA applies to all these relationships, provided there is a construction contract for construction work or related goods and services. Your contract does not need to be in writing—SOPA applies to oral contracts and even implied contracts in certain circumstances.
The Cascading Nature of SOPA Rights
One of SOPA's key features is that payment rights exist at each level of the supply chain. If the principal fails to pay the head contractor, the head contractor may have cashflow problems that prevent them from paying you. However, SOPA gives you the right to enforce payment against the party you contracted with, regardless of whether they have been paid by their principal. This protects subcontractors from being caught in payment disputes between higher parties in the chain. You can only claim against the party with whom you have a direct contract—but your rights against that party are independent of whether they have been paid.
Key Protections for Contractors and Subcontractors
SOPA provides several critical protections specifically valuable to contractors and subcontractors: the right to serve payment claims even without a written contract, protection against pay-when-paid clauses which are void under SOPA, access to retention trust accounts to ensure retention money is protected (for eligible projects), lien rights over materials supplied to secure payment, the right to claim interest on late payments under section 11, and protection of your right to suspend work for non-payment under section 27. Understanding and using these protections can significantly improve your ability to maintain cashflow and recover unpaid money.
Your Position in the Payment Chain
Understanding your position in the contractual structure is important for exercising your SOPA rights effectively. SOPA applies to all relationships in the supply chain, including oral contracts and implied contracts.
The Cascading Nature of SOPA Rights
SOPA gives you the right to enforce payment against the party you contracted with, regardless of whether they have been paid by their principal. You can only claim against your direct contracting party.
Key Protections for Contractors
SOPA provides critical protections: payment claims without written contracts, void pay-when-paid clauses, retention trust accounts (for eligible projects), lien rights, interest on late payments, and the right to suspend work for non-payment.
→ Swipe to see all protections
Learn more about the Security of Payment Act NSW and how it applies to your situation, or understand your options for using SOPA without a written contract.
Preparing Your Payment Claims
Payment claims are the foundation of your SOPA rights. As a contractor or subcontractor, properly preparing and serving payment claims ensures you maintain regular cashflow and have enforceable rights if payment disputes arise. Understanding the requirements and best practices for payment claims specific to your position in the supply chain is essential.
When You Can Serve Payment Claims
For contracts entered into after 21 October 2019, the previous "reference date" concept was abolished under significant SOPA amendments. You can now serve a payment claim on and from the last day of the month in which you first carried out construction work, and on and from the last day of each subsequent month. Your contract may specify an earlier date. If your contract was entered into before 21 October 2019, the older "reference date" rules still apply—check your contract terms or seek legal advice. Understanding when you can claim allows you to plan strategically and maintain regular cashflow throughout the project.
Payment Claims Without Written Contracts
SOPA applies even if you do not have a written contract with the head contractor or another subcontractor. If you have been engaged to perform construction work based on an oral agreement, email exchanges, or even conduct that implies a contract, you still have SOPA rights. Your payment claim should describe the work performed, specify the amount claimed, and state it is made under SOPA. While having a written contract makes proving the terms easier, the absence of written terms does not prevent you from using SOPA to recover payment for work actually performed.
Section 13 Requirements for Valid Claims
Every payment claim must strictly satisfy section 13 of SOPA. Your payment claim must: (1) identify the construction work or related goods and services to which the claim relates, (2) specify the amount of the progress payment claimed, and (3) contain the mandatory statement required by section 13(9) that references the Building and Construction Industry Security of Payment Act 1999 (NSW). This statement must appear on the payment claim document itself—not just in covering correspondence. Courts and tribunals apply strict compliance standards, and payment claims lacking the proper section 13(9) statement have been held invalid, resulting in loss of adjudication rights. For contractors and subcontractors, providing detailed descriptions of work is particularly important because the party you are claiming against may not have direct visibility of all the work you performed.
Supporting Your Claim with Documentation
Strong payment claims include supporting documentation that proves your entitlement. Consider attaching: time sheets showing labour hours and dates, delivery dockets for materials supplied, progress photographs with dates and descriptions, signed variation orders or email approvals for additional works, invoices from your suppliers showing your costs, and calculations breaking down how the claimed amount was derived. As a subcontractor, you may not always have formal progress reports or architect certifications, so your own records become even more critical. Good documentation from the start of the project makes preparing payment claims much easier and significantly improves your prospects in adjudication.
When You Can Claim
For post-October 2019 contracts, you can serve payment claims from the last day of each month. The older "reference date" concept only applies to pre-2019 contracts.
Without Written Contracts
SOPA applies to oral agreements, email exchanges, or conduct that implies a contract. You can serve payment claims even without a written contract.
Section 13 Requirements
Your payment claim must identify the work, specify the amount claimed, and state it is made under the Act. Include detailed descriptions of all work performed.
Supporting Documentation
Attach time sheets, delivery dockets, progress photos, variation orders, supplier invoices, and cost calculations to strengthen your claim.
→ Swipe to see all payment claim guidance
Read our detailed guide on SOPA payment claim requirements.
When You Receive a Payment Schedule
After serving a payment claim, you may receive a payment schedule proposing to pay less than the claimed amount. How you respond to the payment schedule determines whether you recover the full amount you are owed or must accept a reduced payment. Understanding your options and acting within the strict SOPA timeframes is critical.
Evaluating the Payment Schedule
Carefully review any payment schedule you receive. Check that it was served within the required timeframe—typically 10 business days but potentially shorter if your contract specifies a different period. If served late, the payment schedule may be invalid. Examine the scheduled amount and the reasons given for any reduction. Common reasons include disputes about the quality of work, claims that variations were not properly authorised, allegations of delay or defects, set-off claims for other amounts allegedly owed, or disputes about whether certain work was within the contract scope.
Your Options After Receiving a Payment Schedule
If the scheduled amount is acceptable, you can agree to accept it and move on. This may be appropriate for small disputes or where you want to preserve the commercial relationship. If the scheduled amount is unacceptable, you can attempt to negotiate a better outcome before the adjudication deadline expires. However, be mindful that you only have 10 business days from receiving the payment schedule to lodge an adjudication application. If negotiation does not produce a satisfactory result quickly, do not let the adjudication deadline pass.
The 10 Business Day Deadline for Adjudication
If you decide to dispute the payment schedule, you must lodge an adjudication application within 10 business days of receiving the payment schedule. This deadline is absolute and cannot be extended. Missing the deadline means losing your right to adjudicate that particular payment claim. You would need to wait until the next available claim date and serve a fresh payment claim. For contractors and subcontractors without in-house legal resources, this means engaging a construction lawyer immediately upon receiving an unsatisfactory payment schedule to ensure the application is prepared and lodged on time.
Evaluating the Schedule
Check the schedule was served within 10 business days. Examine the scheduled amount and reasons for any reduction. Consider whether reasons are legitimate and supported by evidence.
Your Options
Accept the scheduled amount or negotiate a better outcome. Be mindful you only have 10 business days to lodge an adjudication application if negotiation fails.
The 10 Business Day Deadline
You must lodge an adjudication application within 10 business days. This deadline is absolute and cannot be extended. Engage a lawyer immediately.
→ Swipe to see payment schedule guidance
When No Payment Schedule Is Served
If the party you claimed against fails to serve a payment schedule within the required timeframe, you are in a strong position under SOPA. The failure to respond creates significant consequences for the respondent and gives you powerful enforcement options.
The Section 14(4) Statutory Debt
Section 14(4) of SOPA provides that if the respondent fails to serve a payment schedule and fails to pay the claimed amount, the claimed amount becomes a debt due and payable by the respondent. This is an extremely powerful provision because it converts your payment claim into an immediately enforceable debt without requiring you to prove that you actually performed the work or that the claimed amount is correct. The onus shifts to the respondent to challenge the debt, rather than you needing to prove your entitlement. This provision recognises the importance of responding to payment claims within the strict timeframes SOPA imposes.
The Section 17(2) Notice Option
One enforcement path is to serve a section 17(2) notice on the respondent. This notice must be served within 20 business days of the due date for payment and must state that you intend to apply for adjudication. The respondent then has 5 business days from receiving the notice to serve a payment schedule. If they serve a payment schedule within this period, you have 10 business days from the end of that 5 business day period to lodge an adjudication application. The section 17(2) notice process gives the respondent one last opportunity to engage with your claim and potentially resolve the matter without adjudication.
Direct Adjudication Without Notice
Alternatively, you can proceed directly to adjudication without serving a section 17(2) notice. You have 20 business days from the due date for payment to lodge an adjudication application. In this scenario, because no payment schedule was served, the respondent cannot serve a payment schedule after you lodge the adjudication application. This means the adjudicator will determine your claim without considering any reasons for non-payment from the respondent. This is often the most advantageous position for a claimant under SOPA.
Court Proceedings as an Alternative
Instead of adjudication, you can commence court proceedings to recover the statutory debt created by section 14(4). Court proceedings take significantly longer than adjudication but may be appropriate in certain circumstances: if you need other remedies in addition to payment, if there are complex legal issues better suited to court determination, if the respondent is likely to challenge an adjudication determination in court anyway, or if the debt has existed for some time and adjudication deadlines have passed. Importantly, if you commence court proceedings, you cannot also pursue adjudication for the same payment claim—you must choose one enforcement path.
Section 14(4) Statutory Debt
If no payment schedule is served, the claimed amount becomes a debt due and payable. This converts your claim into an immediately enforceable debt.
Section 17(2) Notice Option
Serve a notice stating you intend to apply for adjudication. The respondent then has 5 business days to serve a payment schedule.
Direct Adjudication
Proceed directly to adjudication within 20 business days. The respondent cannot raise defences if they failed to serve a payment schedule on time.
Court Proceedings
You can commence court proceedings to recover the statutory debt instead of adjudication. You must choose one enforcement path.
→ Swipe to see enforcement options
Learn more about recovering unpaid payments under SOPA.
Your Rights to Retention Money
Retention money is commonly withheld from progress payments as security for defect rectification. For contractors and subcontractors, retention money can represent a significant portion of the project value being held by the party you contracted with. Recent amendments to SOPA provide enhanced protections for retention money through the retention trust scheme, giving you greater certainty that the money will be available when you are entitled to it.
The Retention Trust Scheme
From 1 September 2020, the Security of Payment Regulation 2020 introduced requirements for retention money to be held in trust accounts with authorised deposit-taking institutions. This requirement currently applies to head contractors on projects valued at $20 million or more. If you are working on an eligible project, the party holding retention money must notify you of the trust account details within 5 business days of receiving your first payment claim. They must then deposit your retention money into the trust account within 5 business days of withholding it.
Benefits of the Retention Trust for Contractors
The retention trust scheme provides significant protections for contractors and subcontractors. Your retention money is quarantined from the head contractor's general funds, protecting it from being used for other purposes or lost if the head contractor becomes insolvent. You have visibility of the trust account through the notification requirements, allowing you to verify that your retention has actually been deposited. The head contractor faces penalties for failing to comply with the retention trust requirements, creating a strong incentive for compliance.
When Retention Should Be Released
Your contract should specify when retention money is released. Common trigger points include: practical completion of your scope of works, expiry of a defects liability period (often 6 or 12 months after practical completion), rectification of any identified defects, or final completion and sign-off of the project. If the party holding your retention fails to release it when it becomes due under the contract, you can serve a retention money claim under SOPA.
Enforcement When Retention Is Wrongfully Withheld
If retention money is wrongfully withheld—meaning it should have been released under the contract but was not—you have strong enforcement rights. Serve a retention money claim specifically identifying the retention money held and the contractual basis for its release. If no retention money schedule is served, the claimed amount becomes a statutory debt. You can then either serve a section 17(2) notice, proceed directly to adjudication, or commence court proceedings. Because the retention money should already be held in a trust account for your benefit, enforcement is often straightforward.
Retention Trust Scheme
From 1 September 2020, retention money on projects valued at $20 million or more must be held in a retention trust account. The holder must deposit within 5 business days of withholding.
Benefits for Contractors
Your retention is quarantined from the head contractor's general funds, protecting it from insolvency. You have visibility of the trust account.
When Retention Should Be Released
Common trigger points include practical completion, expiry of defects liability period, rectification of defects, or final completion.
Enforcement Options
Serve a retention money claim identifying the retention held. If no schedule is served, the amount becomes a statutory debt you can enforce.
→ Swipe to see retention money rights
Learn more about accessing wrongfully withheld retention money.
Lien Rights for Material Suppliers
If you supply materials to a construction project as a contractor or subcontractor, you may have additional security through lien rights. A lien gives you a legal interest in the materials you supplied until you are paid. While lien rights are separate from SOPA, they can work together with your SOPA rights to provide layered protection for recovering payment.
What Are Material Lien Rights
Under common law and certain NSW legislation, suppliers of materials to construction projects may retain ownership of those materials until paid. This means that even though the materials have been delivered to the site and potentially incorporated into the works, you retain a legal interest in them until you receive payment. If the party you supplied the materials to fails to pay, you may be able to assert your lien rights to recover the materials or prevent them from being used or removed from the site. Lien rights provide security particularly valuable for suppliers of expensive materials such as structural steel, precast concrete elements, or specialised fixtures.
How Lien Rights Work in Practice
To preserve lien rights, you typically need to include retention of title clauses in your supply contracts or purchase orders. These clauses should state that ownership of the materials does not pass to the buyer until full payment is received. When you deliver materials, keep detailed records of what was supplied, when, and to which project. If payment problems arise, notify the party you supplied (and potentially the head contractor or owner) that you are asserting lien rights over the supplied materials. You may be able to prevent the materials from being used in the works or demand their return. However, lien rights become more complicated once materials are incorporated into a building, as they may become fixtures attached to land.
Using Lien Rights with SOPA
Lien rights and SOPA rights can work together to provide stronger protection. You can serve a payment claim under SOPA for the value of materials supplied while also asserting lien rights over those materials. If the payment claim is not satisfied, you can pursue adjudication under SOPA to obtain a determination for the amount owing. Simultaneously, your lien rights may prevent the other party from using the materials you supplied until payment is made. This combination of rights gives you leverage in negotiating payment—the other party needs the materials to complete their work, and you have both a statutory debt under SOPA and proprietary rights over the materials.
What Are Lien Rights
Suppliers may retain ownership of materials until paid. You can assert lien rights to recover materials or prevent them from being used until payment is made.
How Lien Rights Work
Include retention of title clauses in contracts. Keep detailed records of materials supplied. Notify parties when asserting lien rights over supplied materials.
Using Lien Rights with SOPA
Combine SOPA payment claims with lien rights for stronger protection. This gives you both a statutory debt and proprietary rights over the materials.
→ Swipe to see lien rights information
Learn more about lien rights and material security in NSW.
Claiming Interest on Late Payments
When payments are made late, you suffer a real financial cost through lost cashflow, potential interest on overdrafts or loans, and missed opportunities. Section 11 of SOPA recognises this by giving you the right to claim interest on late payments. Understanding how to claim interest ensures you recover not just the principal amount owed but also compensation for the delay in payment.
Your Right to Interest Under Section 11
Section 11 of SOPA provides that if an amount due under a construction contract is not paid in full by the due date, the person entitled to the payment is entitled to interest on the unpaid amount. This right to interest applies automatically—you do not need a specific clause in your contract allowing for interest. The interest accrues from the due date for payment until the amount is paid in full. For contractors and subcontractors, this means every day that payment is delayed increases the amount the other party owes you through accruing interest.
How Interest Is Calculated
Under section 11 of SOPA, interest is payable at whichever rate is the greater of: (a) the rate prescribed under section 101 of the Civil Procedure Act 2005 (calculated as the Reserve Bank cash rate plus 6% per annum), or (b) the rate specified in your construction contract. This means the higher of the two rates applies—not simply the contractual rate replacing the statutory rate. Interest is calculated daily on the unpaid principal amount. Many contractors and subcontractors fail to claim interest, leaving money on the table that is rightfully owed.
Including Interest in Payment Claims
You can include a claim for interest in your payment claims under SOPA. When preparing a payment claim, include a separate line item for interest calculated on any previous unpaid amounts. Specify the principal amount on which interest is calculated, the applicable interest rate, the period over which interest has accrued, and the total interest amount claimed. Including interest in your payment claim ensures it is captured in any adjudication or court proceedings. Interest continues to accrue on unpaid adjudication determinations until they are satisfied.
Your Right to Interest
Section 11 gives you automatic interest rights on late payments. Interest accrues from the due date until paid in full.
How Interest Is Calculated
Interest is the higher of: the statutory rate (RBA + 6%) or your contractual rate. Calculated daily on the unpaid amount.
Including Interest in Claims
Include interest as a separate line item in your payment claims. Specify the principal, rate, period, and total interest claimed.
→ Swipe to see interest claim information
Learn more about interest on late payments under section 11.
Protection Against Blacklisting
and Victimisation
Many contractors and subcontractors hesitate to exercise their SOPA rights because they fear being blacklisted by head contractors or excluded from future work. While these concerns are understandable given the commercial realities of the industry, it is important to understand both your legal protections and practical strategies for managing these risks.
Legal Protections When Exercising SOPA Rights
SOPA provides important protections when you exercise your statutory rights. Section 27 protects your right to suspend work for non-payment—a head contractor cannot take action under the contract against you for lawfully suspending work. While SOPA does not contain a specific "anti-blacklisting" provision, general protections under Australian Consumer Law and fair trading principles may apply if you can demonstrate you were victimised for asserting legitimate legal rights. If a head contractor explicitly penalises you under the current contract for using SOPA, you may have legal remedies available.
The Practical Reality of Industry Relationships
Despite legal protections, the practical reality is that construction is a relationship-based industry and informal blacklisting can occur. Head contractors may simply choose not to engage you for future projects, or may deprioritise your quotes and tender submissions. This behaviour is difficult to prove and pursue legally because head contractors have broad discretion in selecting their subcontractors. Weighing the financial recovery against potential relationship damage requires careful consideration of your specific circumstances, including your dependency on particular head contractors and the availability of alternative work.
Strategies for Minimising Blacklisting Risk
Several strategies can help you exercise your SOPA rights while minimising blacklisting risk. Before pursuing aggressive enforcement, attempt to resolve disputes through negotiation or mediation—showing willingness to compromise demonstrates reasonableness. When you do exercise SOPA rights, communicate professionally and clearly explain that you are exercising legal rights available to all parties in the industry. Document all interactions so you have evidence if victimisation occurs. Diversify your client base so you are not overly dependent on any single head contractor. Build a reputation for quality work and professionalism that makes you valuable regardless of past disputes.
When to Stand Your Ground
While commercial relationships matter, there are situations where you should exercise your SOPA rights despite blacklisting concerns. If a head contractor consistently delays or reduces payments without legitimate reason, exercising SOPA rights may be necessary for your business survival. If the amount at stake is significant relative to your business size, recovering the payment may be more important than preserving the relationship with that particular head contractor. If the other party is insolvent or in financial distress, acting quickly to recover payment through SOPA may be your only opportunity before they collapse entirely.
Legal Protections
Section 27 protects your right to suspend work for non-payment. General fair trading protections may also apply if you're victimised for asserting legal rights.
Practical Reality
Construction is relationship-based and informal blacklisting can occur. Weigh financial recovery against potential relationship damage.
Minimising Risk
Attempt negotiation first, communicate professionally, document interactions, and diversify your client base to reduce dependency.
When to Stand Your Ground
For consistent non-payers, significant amounts, or insolvent parties, exercising SOPA rights may be necessary for your business survival.
→ Swipe to see blacklisting guidance
Learn more about can head contractors blacklist subcontractors for using SOPA.
Risks and Considerations for
Contractors and Subcontractors
While SOPA provides powerful rights for contractors and subcontractors, there are risks and potential consequences to consider. Understanding these risks helps you exercise your SOPA rights strategically and avoid unintended negative outcomes.
Invalid Payment Claims
Serving an invalid payment claim can result in losing your SOPA rights for that claim period. Without a valid payment claim, you cannot pursue adjudication even if the work was legitimately performed. Always ensure your claims strictly comply with section 13 requirements.
Missed Adjudication Deadlines
The 10 business day deadline to lodge an adjudication application after receiving a payment schedule is absolute and cannot be extended. Missing this deadline means losing your right to adjudicate that payment claim. Engage a lawyer immediately upon receiving an unsatisfactory payment schedule.
Proof of Service Challenges
If your service of the payment claim is challenged in adjudication and you cannot prove proper service, your payment claim may be found invalid. Always maintain clear evidence of service: email confirmations, registered post receipts, or statutory declarations.
Cash Flow During Disputes
While pursuing your SOPA rights, you may face cash flow challenges particularly if you have already paid your suppliers and workers. Budget for potential delays in receiving payment and consider whether you can sustain operations during an adjudication process.
Invalid Payment Claims
Serving an invalid payment claim can result in losing your SOPA rights for that claim period. Always ensure your claims comply with section 13 requirements.
Missed Adjudication Deadlines
The 10 business day deadline is absolute. Missing it means losing your right to adjudicate that payment claim.
Proof of Service Challenges
Maintain clear evidence of service: email confirmations, registered post receipts, or statutory declarations.
Cash Flow During Disputes
Budget for potential delays in receiving payment and consider whether you can sustain operations during adjudication.
→ Swipe to see all risks
Practical Tips for Contractors
and Subcontractors
Successfully exercising your SOPA rights as a contractor or subcontractor requires careful planning, excellent record-keeping, and strategic decision-making. Here are practical tips to help you maximise your SOPA rights and maintain healthy cashflow throughout your projects.
Clarify Contract Terms
Before commencing work, ensure you understand the payment terms even if there is no written contract. Confirm when you can serve payment claims, payment periods, and retention percentages. Get these terms in writing via email if possible.
Document Everything
Maintain comprehensive records from day one: daily site diaries, progress photos with dates, all emails and correspondence, delivery dockets, timesheets, variation approvals in writing, and meeting notes.
Serve Claims Regularly
Do not wait until project completion to claim payment. Serve payment claims regularly—typically monthly—to maintain regular cashflow. If your contract does not specify an earlier date, you can claim on the last day of each month.
Act Quickly on Problems
When you receive an unsatisfactory payment schedule or no response, engage a construction lawyer immediately. The tight SOPA timeframes mean delays can cost you your rights.
Know Your Rights Without Contracts
Do not assume you have no SOPA rights just because there is no written contract. SOPA applies to oral contracts and contracts implied by conduct. Consult a construction lawyer to understand your position.
Balance Legal and Commercial
Before aggressively pursuing SOPA enforcement, consider the commercial context. Sometimes negotiation preserves valuable relationships while still recovering most or all amounts owed.
Use Specialist Lawyers
SOPA is highly technical and specialist knowledge makes a significant difference in outcomes. Engage a lawyer who focuses exclusively on construction law and has extensive SOPA experience.
Protect Your Retention Money
Request confirmation that your retention money has been deposited into a retention trust account as required. When retention becomes due, serve a specific retention money claim if it is not released promptly.
Clarify Contract Terms
Understand payment terms before starting work. Get terms in writing via email if possible.
Document Everything
Keep comprehensive records from day one: diaries, photos, emails, dockets, timesheets, and variation approvals.
Serve Claims Regularly
Serve payment claims regularly—typically monthly—to maintain regular cashflow throughout the project.
Act Quickly on Problems
Engage a construction lawyer immediately upon receiving an unsatisfactory payment schedule.
Know Your Rights
SOPA applies to oral contracts too. Consult a construction lawyer to understand your position.
Balance Legal and Commercial
Consider the commercial context before aggressively pursuing enforcement. Negotiation may preserve relationships.
Use Specialist Lawyers
Engage a lawyer who focuses exclusively on construction law with extensive SOPA experience.
Protect Your Retention
Confirm your retention is in a trust account and serve claims if not released when due.
→ Swipe to see all tips
Navigating the Security of Payment Act as a contractor or subcontractor requires specialist knowledge of your unique position in the supply chain, retention trust requirements, and strategic enforcement options. Whether you need to prepare payment claims without written contracts, access wrongfully withheld retention money, or enforce determinations through the courts, John Dela Cruz provides focused expertise in SOPA matters. With over 17 years concentrating exclusively on construction law, John helps contractors and subcontractors protect their cashflow rights and recover unpaid money efficiently.
Why Choose Contracts Specialist
John Dela Cruz
Principal Lawyer, Contracts Specialist
When you work with Contracts Specialist, you receive legal advice directly from John Dela Cruz — Principal Lawyer with over 17 years of exclusive construction law experience.
John is an Australian Legal Practitioner and he services NSW, Queensland, Victoria, and Tasmania. He has dedicated his entire legal career to specialise in construction law. As a former Divisional President of the Master Builders Association NSW, he combines deep legal expertise with comprehensive industry knowledge. He maintains daily experience in building dispute tribunals (NCAT, VCAT, QCAT, TASCAT) and courts across multiple jurisdictions.
Unlike generalist lawyers who handle various legal matters, John specialises exclusively in construction law matters affecting homeowners, builders, contractors, and subcontractors. You receive focused expertise from a lawyer who understands both the legal framework and the practical realities of the building industry.
How to Get Started
1
Book Your Free Consultation
Book your free consultation through our online calendar - choose a time that suits you. No cost, no obligation. You will have direct access to our Principal Lawyer from your very first conversation.
2
Discuss Your Matter with Our Principal Lawyer
Speak directly with John Dela Cruz, Principal Lawyer, about your construction law matter. We may request additional documents such as your building contract, payment claims, or correspondence to fully understand your situation.
3
Receive Your Cost Disclosure & Proceed
Receive a detailed cost disclosure outlining the scope of work and fees. Review and agree to proceed when you are ready - no hidden costs. Our fixed-fee approach means you know exactly what you are paying for.
1
Book Your Free Consultation
Book your free consultation through our online calendar. No cost, no obligation. Direct access to our Principal Lawyer from your very first conversation.
2
Discuss Your Matter
Speak directly with John Dela Cruz about your construction law matter. We may request additional documents to fully understand your situation.
3
Receive Cost Disclosure & Proceed
Receive a detailed cost disclosure outlining scope and fees. No hidden costs. Our fixed-fee approach means you know exactly what you are paying for.
→ Swipe to see all steps
Get Expert Advice on Security of Payment Matters
Whether you need to prepare payment claims, access retention money, respond to payment schedules, or enforce determinations, our Principal Lawyer provides specialist guidance with transparent fees and direct access.
Book your free consultation today - protect your cashflow rights under SOPA with no cost and no obligation.
Frequently Asked Questions
Common questions about Security of Payment for NSW contractors and subcontractors.
Can I use SOPA if I do not have a written contract?
Yes, SOPA applies to oral contracts and contracts implied by conduct. If you performed construction work based on an agreement with another party—even if that agreement was not in writing—you likely have SOPA rights. You can serve payment claims and pursue adjudication even without a written contract, though having written evidence of the terms makes proving your entitlement easier.
How do I access my retention money if the head contractor will not release it?
If retention money becomes due under your contract and is not released, serve a retention money claim under SOPA specifically identifying the retention held and the contractual basis for its release. If no retention money schedule is served or payment is not made, you can pursue adjudication to recover the retention. The retention trust scheme requires retention money to be held in a trust account, which strengthens your position in recovering it.
Can I claim interest on late payments?
Yes, section 11 of SOPA gives you the right to claim interest on payments not made by their due date. Interest is payable at whichever rate is the greater of: the prescribed rate under the Civil Procedure Act (RBA cash rate plus 6%), or the rate specified in your contract. Interest accrues daily from the due date until payment is made. Include interest as a separate line item in your payment claims.
Will I be blacklisted if I use SOPA against a head contractor?
SOPA protects your right to suspend work for non-payment under section 27, and a head contractor cannot take action under the contract against you for lawfully exercising this right. However, SOPA does not contain a specific anti-blacklisting provision. The practical reality is that head contractors may choose not to engage you for future projects for various reasons. You need to balance your legal rights with commercial considerations. For significant disputes or persistent non-payers, exercising SOPA rights may be necessary for your business survival despite relationship concerns.
What should I do if I receive an unsatisfactory payment schedule?
Engage a construction lawyer immediately—you only have 10 business days from receiving the payment schedule to lodge an adjudication application. Your lawyer will review the payment schedule, gather evidence supporting your payment claim, prepare comprehensive submissions addressing the reasons for withholding payment, and lodge the adjudication application with an authorised nominating authority within the deadline. Do not delay seeking advice as the timeframe is very tight.
Can I use SOPA without a written contract?
Yes, SOPA applies to oral contracts and contracts implied by conduct. You can serve payment claims even without a written contract.
How do I access withheld retention money?
Serve a retention money claim under SOPA. If no schedule is served or payment made, you can pursue adjudication to recover the retention.
Can I claim interest on late payments?
Yes, section 11 gives you the right to claim interest at the higher of the statutory rate (RBA + 6%) or your contractual rate. Include interest as a line item in claims.
Will I be blacklisted for using SOPA?
Section 27 protects your right to suspend work for non-payment. Balance legal rights with commercial considerations for your situation.
What if I get an unsatisfactory payment schedule?
Engage a construction lawyer immediately. You only have 10 business days to lodge an adjudication application. Do not delay.
→ Swipe to see all FAQs
Related Resources
Explore more resources about Security of Payment and protecting your rights as a contractor or subcontractor.
Security of Payment Act NSW
Comprehensive overview of the Building and Construction Industry Security of Payment Act 1999 and how it applies to contractors and subcontractors in NSW.
Learn More →SOPA Payment Claim Guide
Detailed guidance on preparing valid payment claims that comply with section 13 requirements and withstand scrutiny in adjudication.
Learn More →Security of Payment Adjudication
Everything you need to know about the adjudication process under SOPA, from lodging applications to receiving determinations.
Learn More →Recovering Unpaid Payments NSW Builders SOPA
Explore your enforcement options when payments are overdue, including adjudication, court proceedings, and suspension rights.
Learn More →Retention Trust and Accessing Wrongfully Withheld Money
Understand retention trust requirements and how to access retention money that is wrongfully withheld under SOPA.
Learn More →Lien Rights and Material Security NSW
Learn about lien rights for material suppliers and how they work together with SOPA rights to protect payment for supplied materials.
Learn More →Interest on Late Payments SOPA Section 11
Understand your right to claim interest on late payments under section 11 of SOPA and how to calculate interest amounts.
Learn More →Can Head Contractor Blacklist Subcontractors for Using SOPA
Understand the legal protections against victimisation for exercising SOPA rights and the practical realities of industry relationships.
Learn More →Using SOPA Without a Written Contract
Learn how SOPA rights apply even when you do not have a written contract and how to protect your payment rights with oral agreements.
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