California’s prompt payment statutes protect contractors and subcontractors by imposing strict deadlines on construction payments and penalizing parties who wrongfully withhold money. Owners must pay progress payments within 30 days (Civil Code §8800), contractors must pay subcontractors within 7 days (B&P §7108.5), and retention must be released within 45 days of completion (Civil Code §8812). Violations trigger a 2% monthly penalty plus attorney’s fees. Starting in 2026, SB 440 adds new change order payment protections with stop-work rights.
What Are California’s Prompt Payment Statutes for Construction?
California’s prompt payment framework is a collection of statutes designed to keep money flowing through the construction payment chain. Construction projects involve a cascade of payments—from owner to general contractor, from general contractor to subcontractors, and from subcontractors to suppliers. When any party in the chain holds money longer than the law allows, the entire project can suffer.
The key prompt payment statutes for private construction work are found in Civil Code §§8800-8822 and Business and Professions Code §7108.5. For public works, separate provisions exist under Public Contract Code §§7107 and 10261.5. Each statute establishes specific payment deadlines, penalties for late payment, and provisions for good faith disputes.
What Are the Payment Deadlines for Private Construction Projects?
Owner to Direct Contractor: 30 Days
Under Civil Code §8800(a), the owner must pay the direct contractor within 30 days after receiving a demand for payment made pursuant to the contract, for any progress payment due as to which there is no good faith dispute. The notice must comply with the requirements of Civil Code Chapter 2 (commencing with Section 8100).
If there is a good faith dispute over a progress payment, the owner may withhold up to 150% of the disputed amount under §8800(b)—but must pay the undisputed portion within the 30-day deadline.
Contractor to Subcontractor: 7 Days
Under Business and Professions Code §7108.5(a), a prime contractor or subcontractor must pay each subcontractor not later than 7 days after receipt of each progress payment, unless otherwise agreed to in writing. The payment must equal the respective amounts allowed the contractor on account of the work performed by the subcontractor, to the extent of the subcontractor’s interest.
Like the owner-to-contractor deadline, the 7-day rule includes a good faith dispute exception: the contractor may withhold up to 150% of any disputed amount.
Retention Release: 45 Days After Completion
Under Civil Code §8812(a), if the owner withholds retention, the owner must pay the retention to the direct contractor within 45 days after completion of the work of improvement. The direct contractor must then pay each subcontractor their share of the retention within 10 days after receiving the retention payment (Civil Code §8814(a)).
| Payment Type | Deadline | Statute | Penalty for Late Payment |
| Progress payment (owner to contractor) | 30 days after demand | Civ. Code §8800 | 2% per month + attorney’s fees |
| Progress payment (contractor to sub) | 7 days after receipt | B&P §7108.5 | 2% per month + attorney’s fees |
| Retention (owner to contractor) | 45 days after completion | Civ. Code §8812 | 2% per month + attorney’s fees |
| Retention (contractor to sub) | 10 days after receipt | Civ. Code §8814 | 2% per month + attorney’s fees |
What Are the Penalties for Late Payment?
California’s prompt payment statutes impose a uniform penalty of 2% per month on amounts wrongfully withheld. This replaces any interest that would otherwise be due. The 2% monthly rate equates to an effective annual penalty rate of 24%—a substantial incentive for timely payment.
In addition to the 2% monthly penalty, the prevailing party in an action to collect wrongfully withheld amounts is entitled to recover costs and reasonable attorney’s fees. This fee-shifting provision is significant because it reduces the risk of pursuing a prompt payment claim and increases the cost to the withholding party of defending an unjustified withholding.
The penalty applies only to amounts “wrongfully” withheld. If the withholding party has a good faith dispute over the amount due, it may withhold up to 150% of the disputed amount without triggering the penalty. However, the undisputed portion must still be paid on time—you cannot withhold the entire payment because of a dispute over a portion.
How Does SB 440 (2026) Change the Payment Framework?
Senate Bill 440—the Private Works Change Order Fair Payment Act—takes effect on January 1, 2026, and represents the most significant change to California private construction payment law in decades. Codified as new Civil Code §§8850-8859, SB 440 establishes a mandatory process for handling claims related to changes in scope of work on private projects.
The law applies to most private works contracts entered into on or after January 1, 2026, with limited exceptions for small residential projects (non-mixed use buildings of four stories or fewer built using Type V construction). Key provisions include:
- Mandatory claim review timelines: Owners must respond to change order claims within 30 days, with a structured process for dispute resolution.
- 2% monthly interest: Late payments on undisputed change order amounts are subject to the same 2% monthly penalty, equaling up to 24% annually.
- Stop-work rights: Contractors may suspend work on 10 days’ notice if the owner fails to pay undisputed amounts or comply with the claims process.
- Non-waivable protections: Contract clauses that attempt to waive these rights are void as against public policy.
- Mandatory mediation: If disputes remain unresolved after the meet-and-confer process, the statute provides for mediation before litigation.
SB 440 mirrors protections that have long existed for public works under Public Contract Code §§20104.50 et seq. and §9204, bringing similar transparency and accountability to private construction.
How Do Prompt Payment Rights Relate to Mechanic’s Lien Rights?
Prompt payment statutes and mechanic’s lien rights are complementary remedies—not alternatives. If you are not being paid, you should consider exercising both sets of rights.
The prompt payment statutes give you a direct claim for the amounts owed plus 2% monthly penalties and attorney’s fees. Mechanic’s lien rights give you a security interest in the property itself, which can force a sale if the lien is not satisfied. Stop payment notices provide another layer of protection by freezing construction funds held by the owner or lender.
Preserving your mechanic’s lien rights requires strict compliance with preliminary notice requirements and filing deadlines. Do not assume that prompt payment claims are a substitute for protecting your lien rights. A comprehensive payment recovery strategy typically involves multiple remedies working in parallel.
How Do You Enforce a Prompt Payment Claim?
- Send a written payment demand: Deliver a formal demand for payment that references the applicable statute (Civil Code §8800, B&P §7108.5, etc.) and clearly states the amount due, the date payment was due, and the accruing penalty.
- Document the withholding: Keep records showing when payment was demanded, when it was due, and that it was not paid. Calculate the running 2% monthly penalty.
- Evaluate good faith disputes: If the payor claims a good faith dispute, verify whether the dispute is genuine and whether the payor properly limited the withholding to 150% of the disputed amount.
- File a civil lawsuit: If informal demand does not produce payment, file a lawsuit for the amount owed plus the 2% monthly penalty and attorney’s fees. Consider whether the amount warrants small claims court (up to $12,500) or unlimited civil court.
- Coordinate with other remedies: Simultaneously preserve your mechanic’s lien rights, serve a stop payment notice if applicable, and consider filing a CSLB complaint against a licensed contractor who is withholding payments from subcontractors.
What Documentation Do You Need for a Prompt Payment Claim?
Strong documentation is essential for a successful prompt payment claim. At minimum, you should maintain:
- Copies of the construction contract and all change orders
- All payment applications or invoices submitted
- Records showing when each payment demand was delivered
- Proof of payment received (or not received) and the dates
- Correspondence regarding any payment disputes
- Records of work performed that corresponds to each payment application
- Preliminary notices served on the project
Talk to a California Construction Law Attorney
Bay Legal’s construction law team helps owners, contractors, and subcontractors resolve disputes and protect their rights under California law. Whether you need help pursuing a claim, filing a complaint, or understanding your legal options, we can help.
Schedule a consultation: call (650) 668-8000 or visit baylegal.com/practice-areas/construction-law/.
Frequently Asked Questions
Q: What is the penalty for late payment on a California construction project?
A: Under Civil Code §8800(c), an owner who wrongfully withholds a progress payment from a direct contractor is liable for a penalty of 2% per month on the amount wrongfully withheld, in place of any interest otherwise due. The prevailing party in a collection action is also entitled to attorney’s fees and costs.
Q: How quickly must a contractor pay subcontractors in California?
A: Under Business and Professions Code §7108.5, a prime contractor or subcontractor must pay subcontractors within 7 days after receipt of each progress payment, unless otherwise agreed in writing. The penalty for late payment is 2% per month on the amount wrongfully withheld.
Q: When must retention be released on a private project in California?
A: Under Civil Code §8812, the owner must pay retention to the direct contractor within 45 days after completion of the work of improvement. The direct contractor must then pay subcontractors their share of retention within 10 days after receiving the retention payment (Civil Code §8814).
Q: How does SB 440 change payment rules for private construction?
A: SB 440, effective January 1, 2026, creates new Civil Code §§8850-8859. It establishes mandatory timelines for reviewing change order claims, imposes 2% monthly interest penalties on late payments related to change order work, and gives contractors the right to suspend work if owners fail to pay undisputed amounts.
Q: Can I recover attorney’s fees for prompt payment violations?
A: Yes. Civil Code §8800(c) provides that the prevailing party in an action to collect wrongfully withheld amounts is entitled to costs and reasonable attorney’s fees. Similar provisions exist in other California prompt payment statutes.
Disclaimer: This content is for informational purposes only and does not constitute legal advice. Results depend on the specific facts of each situation. No attorney-client relationship is created by reading this article. Contact Bay Legal, PC for advice on your specific situation.
