A California Notice of Completion is a document you record with the county recorder after a construction project finishes so that the window for contractors, subcontractors, and suppliers to file a mechanic’s lien against your property shrinks from 90 days to 30 or 60 days, depending on the claimant. Filing is voluntary. You have 15 days from the date of completion to get it recorded, and missing that window means the notice becomes ineffective and every claimant keeps the full 90 days.
When the Project Counts as Complete
The 15-day recording clock runs from whichever “completion” event happens first, and California Civil Code Section 8180 defines four of them. Only one requires the work to actually be finished.1California Legislative Information. California Code CIV 8180 – Completion
- Actual completion of all work described in the contract.
- Occupation or use of the property by the owner combined with cessation of labor. Both conditions have to exist at the same time.
- A continuous 60-day stoppage of labor, whether or not the project is technically finished.
- Recording a separate notice of cessation, which is available once labor has stopped for at least 30 continuous days.
The 60-day stoppage catches owners off guard. If a contractor walks off the job or delays returning, the clock can run without anyone treating the project as “done,” and the 15-day recording window may already be gone by the time the owner thinks to file.
What the Notice Must Contain
Section 8182 sets out what the notice has to include, and a filing that doesn’t comply is explicitly ineffective.2California Legislative Information. California Code CIV 8182 – Notice of Completion
- The owner’s interest in the property: outright ownership, joint tenancy, purchase under contract, or lease. A co-owner’s signature is sufficient.
- The date of completion, corresponding to whichever Section 8180 trigger occurred. A wrong date doesn’t kill the notice as long as the true completion date falls within 15 days before the recording date.
- If the notice covers only a portion of the work under a partial completion, the name of the direct contractor for that portion and a general description of the scope.
- If the person signing isn’t the original owner who hired the contractor, the name and address of the prior owner.
The owner has to sign and verify the notice. Verification means a declaration under penalty of perjury that the contents are true.
Where and When to Record
Record the notice with the county recorder’s office in the county where the property sits, within 15 days of the completion date. County recorders provide standard forms that meet state requirements, and fees are generally modest. Match the legal description and ownership details on the notice to what appears on your deed; a mismatch can create title problems later.
Miss the 15-day window and there is no cure. You cannot record a late notice and get partial credit. Every potential claimant keeps the full 90-day lien period.
Serving Copies on Contractors and Claimants
Recording is only half of the process. Section 8190 requires the owner to send a copy of the recorded notice, within 10 days of recording, to every direct contractor on the project and to every claimant who previously sent the owner a preliminary notice.3California Legislative Information. California Code CIV 8190 – Notice of Completion or Cessation
Failing to send a copy to a particular person doesn’t invalidate the notice across the board. It makes the notice ineffective as to that person only. Their lien deadline stays at 90 days while everyone who was properly served is held to the shorter window. There’s no additional penalty for missing someone, but the whole point of filing is undermined for each claimant you don’t notify.
Owners who live on the property as a personal residence, in a dwelling with four or fewer units, are exempt from the 10-day copy requirement. For most homeowners remodeling or adding to their own house, this step doesn’t apply.
How Much the Notice Shortens Lien Deadlines
Without a recorded notice, anyone who worked on or supplied materials to the project has 90 days from completion to record a mechanic’s lien. Recording the notice compresses that window, and by different amounts depending on the claimant.
- Direct contractors have 60 days after the notice is recorded to file their lien.4California Legislative Information. California Code CIV 8412 – Time for Recording Lien – Direct Contractor
- Subcontractors and material suppliers have 30 days after the notice is recorded.5California Legislative Information. California Code CIV 8414 – Time for Recording Lien – Other Claimant
The statute uses “the earlier of” the two deadlines, so the recording date starts the shortened clock. Record the notice on day 5 after completion and a subcontractor’s deadline becomes day 35, not day 90.
Projects With Multiple Contracts
Larger projects often use separate direct contracts for different phases, such as demolition, framing, and electrical. Section 8186 lets owners record a notice of completion for each individual contract as that portion of the work finishes, rather than waiting for the whole project to wrap up.6California Legislative Information. California Code CIV 8186 – Multiple Direct Contracts
Once a partial notice is recorded, the direct contractor for that portion is treated as having completed their contract, and claimants tied to that portion are treated as having stopped work. The shortened lien deadlines start running for everyone connected to that contract even while other phases are still active. A partial notice has to name the specific contractor and give a general description of the scope it covers.
Notice of Cessation as an Alternative
If a project stalls but hasn’t hit the 60-day automatic trigger, the owner can record a notice of cessation once labor has stopped for at least 30 continuous days, provided the stoppage is still ongoing when the notice is recorded.7Justia. California Code CIV 8188 – Notice of Cessation
The notice of cessation has to state the approximate date labor stopped and confirm that work hasn’t resumed. It has to be signed and verified by the owner. Once recorded, it triggers the same shortened lien deadlines as a notice of completion: 30 days for subcontractors and suppliers, 60 days for direct contractors. If a contractor has disappeared mid-project, cessation is the faster route rather than waiting out the full 60-day automatic clock.
What Happens If You Don’t File
Nothing happens directly. There is no penalty for skipping the notice. The consequence is that every potential lien claimant keeps the full 90-day window, which creates real exposure for owners trying to sell, refinance, or close out a project’s finances. A lien recorded on day 85 can freeze a sale or derail a loan closing.
The 15-day window doesn’t reopen. Once it passes, you can’t file a late notice to catch up. Given the modest recording fee and a reduction in lien exposure of a third to two-thirds, there’s rarely a reason to let the window lapse.