A California stop notice, formally called a stop payment notice, is a written demand that forces whoever controls the construction money on a project to freeze enough of it to cover your unpaid claim. It goes to the property owner, the construction lender, or the public agency running the job, and it is the primary collection tool for unpaid subcontractors, suppliers, and laborers, especially on public works where mechanics liens are not available.
The notice does not by itself get you paid. It sets money aside while you pursue the underlying claim, and it puts you in line ahead of others when funds are short. To make it work, you have to qualify, serve it on time, and follow through with a lawsuit if the money is not released voluntarily.
Who Qualifies to File
Stop payment notice rights track mechanics lien rights. Direct contractors, subcontractors, material suppliers, equipment lessors, laborers, and design professionals who provided authorized work all qualify.1Justia. California Code Civil Code 8400-8404 Suppliers who sold to another supplier (rather than to a contractor or subcontractor) do not.
Two exclusions matter. On a private project, a stop payment notice directed at the property owner cannot be filed by the direct (general) contractor, who already has a contract with the owner and a breach-of-contract remedy.2California Legislative Information. California Civil Code 8520 The general contractor can still send a notice to the construction lender.3Justia. California Code Civil Code Article 3 – Stop Payment Notice to Construction Lender On a public project, direct contractors cannot file at all; the remedy belongs to subcontractors, suppliers, and laborers.
You do not have to choose between remedies. A stop payment notice, a mechanics lien, and a payment bond claim are cumulative under California law, and you can pursue them at the same time for the same unpaid work.
Serve the Preliminary Notice First
Most claimants have to serve a 20-day preliminary notice before they can file a stop payment notice. It goes to the owner, general contractor, and construction lender on private projects, or to the public entity on public projects, within 20 days of first furnishing labor or materials.4Justia. California Code Civil Code 8200-8216 – Preliminary Notice
A late preliminary notice is better than none. You can still serve it after the 20-day window, but your stop payment notice will only cover work or materials furnished during the 20 days before that late notice and anything after.4Justia. California Code Civil Code 8200-8216 – Preliminary Notice Earlier work drops out of the claim. Subcontractors on long projects lose real money this way.
Laborers and direct contractors are exempt from the preliminary notice requirement.5CSLB. How to Prevent a Mechanics Lien
Private Projects: Owner, Lender, and the Bond Question
On a private project, the notice can go to the property owner, the construction lender, or both. When there is a construction loan, the lender is usually the more useful target because it controls draw disbursements.
A construction lender must withhold funds when it receives a stop payment notice, bonded or unbonded. But the lender has an election: it may refuse to withhold if the notice is unbonded, or if a payment bond was recorded before the lender received any stop payment notice.6California Legislative Information. California Civil Code 8536 Attach a surety bond equal to 125% of the amount claimed and the election disappears; withholding is mandatory.7California Legislative Information. California Civil Code 8532 If the amount at stake is meaningful, the bond premium is nearly always worth it.
Private Project Deadlines
The stop payment notice must be served before the deadline for recording a mechanics lien expires.8California Legislative Information. California Civil Code 8508 Those deadlines are:
- No notice of completion or cessation recorded: 90 days after actual completion or after work has ceased for 60 continuous days.
- Notice of completion or cessation recorded, subcontractors and suppliers: 30 days from the recording date.
- Notice of completion or cessation recorded, direct contractors: 60 days from the recording date.
Miss the window and the notice is invalid. The document itself must state the amount due, describe the labor or materials furnished, and give the claimant’s contact information. Attach a copy of the surety bond if the notice is bonded. Serve it by registered or certified mail or by personal delivery with proof of receipt.
Public Projects
Mechanics liens cannot attach to government-owned property, so on public works the stop payment notice is the main tool. The notice goes to the public entity administering the contract, and the agency has no election to ignore it. Even an unbonded notice on a public project requires the entity to withhold funds. If it disburses money after receiving a valid notice, it can be held liable.
Bonding still helps. A claimant who attaches a 125% surety bond gains the right to sue the public entity directly if funds are not properly withheld. Without the bond, enforcement options against the agency are narrower.
The public-works service deadline is 30 days after a notice of completion, acceptance, or cessation is recorded, or 90 days after actual completion or cessation if none of those notices is recorded.
Priority When the Money Runs Out
When several claimants file on the same project and the withheld funds cannot cover everyone, California law sets a strict priority.9California Legislative Information. California Civil Code 8540 – Priorities Bonded stop payment notices come first. If bonded claims exceed the available funds, they share proportionally based on each claim’s share of the bonded total. Unbonded claimants are paid only from whatever is left, again pro rata if funds fall short.
The order in which notices were served or lawsuits filed does not affect priority. A bonded claimant who files last still outranks an unbonded claimant who filed first.9California Legislative Information. California Civil Code 8540 – Priorities That is a second reason to bond a serious claim.
Enforcing the Notice
Serving the notice starts a clock, not a payment. If the withheld funds are not released voluntarily, you have to file a lawsuit. Enforcement actions may be filed any time after 10 days from service, but no later than 90 days after the stop-payment-notice service deadline expires.10Justia. California Code Civil Code Article 5 – Enforcement of Claim Stated in Stop Payment Notice On a private project with no notice of completion, that can stretch to roughly 180 days from actual completion (90 days to serve plus 90 days to sue).
Miss the enforcement window and the notice dies automatically. Whoever is holding the funds must release them, with no grace period and no extension.10Justia. California Code Civil Code Article 5 – Enforcement of Claim Stated in Stop Payment Notice Once you file, you have to notify everyone who received the original notice within five days.
Attorney’s fees are available on bonded claims. In an enforcement action on a bonded stop payment notice, the prevailing party recovers reasonable attorney’s fees along with costs and damages.10Justia. California Code Civil Code Article 5 – Enforcement of Claim Stated in Stop Payment Notice That cuts both ways: a claimant who loses a bonded fight can end up paying the defense. If the full amount owed is tendered and the case settles, there is no prevailing party and no fee award.
Do Not Inflate the Claim
A claimant who willfully files a false stop payment notice, or who knowingly includes amounts for work that was never performed, forfeits all rights to the withheld funds and all mechanics lien rights on that project.11California Legislative Information. California Civil Code 8504 The penalty is total forfeiture, not a reduction to the honest number. Padding a $50,000 claim to $75,000 can wipe out the right to collect anything. Keep the amount tied to documentation.
Releasing the Notice and Release Bonds
Once you are paid or decide not to pursue the claim, provide a written release to whoever received the original notice so the withheld funds can flow again.
The party whose money is frozen does not have to wait. A property owner, general contractor, or other affected party can free the funds by posting a release bond equal to 125% of the claimed amount, issued by an admitted surety insurer and conditioned on payment of whatever the claimant ultimately recovers, plus court costs. When the party holding the funds receives the release bond, the cash must be released.12California Legislative Information. California Civil Code 8510
The release bond does not extinguish the claim. It substitutes the bond for the cash, so the project can move while the dispute is litigated. For a general contractor with frozen funds and a payroll to make, it is often the most practical way out.