For contractors, subcontractors, and suppliers, the mechanics lien is the most powerful collection tool California offers — a security interest in the very property you improved, created by statute rather than contract. But the power comes with unforgiving deadlines: miss an applicable notice or recording deadline and lien rights can be lost. This article walks through who can claim a mechanics lien, the deadlines that control it, and how liens fit into a broader strategy for getting paid on construction work.
What a mechanics lien does
A mechanics lien, governed by Civil Code section 8000 et seq., encumbers the private property where the work was performed. Once recorded, it clouds title: the owner generally cannot sell or refinance cleanly until the lien is resolved, and the lien claimant can sue to foreclose — potentially forcing a sale of the property to pay the debt. That leverage changes the conversation. An invoice can be ignored; a recorded lien against the project site rarely is. For construction businesses, the lien is the sharp end of debt collection, and it works because it puts pressure on the owner and lender, not just the party that stiffed you.
Who can claim one
Lien rights extend to those who provide work or materials to a private work of improvement: direct contractors, subcontractors, material suppliers, equipment lessors, laborers, and design professionals. Public projects are different — you cannot lien public property, so remedies there run through stop payment notices and payment bond claims instead. The lien secures the reasonable value of the work provided or the contract price, and for contractors, a valid license is essential: an unlicensed contractor generally cannot enforce lien rights or even sue for compensation.
The preliminary notice: your ticket to the lien
Claimants other than direct contractors and laborers generally must serve a California preliminary notice — often called the 20-day notice — on the owner, the direct contractor, and the construction lender, if any (Civ. Code § 8200 et seq.). A direct contractor generally must give preliminary notice to the construction lender, if any. The rules that matter most:
- Subcontractors and suppliers who lack a direct contract with the owner must give preliminary notice to preserve lien rights.
- The notice should go out within 20 days of first furnishing work or materials; a late notice still works, but only reaches back 20 days before service.
- Serving the notice on every project, every time, is cheap insurance — it is not a hostile act, just a statutory formality.
Recording deadlines: 90 days, sometimes less
The lien is created by recording a claim of lien with the county recorder, and the window is short:
- Direct contractors must record within 90 days after completion of the work of improvement — shortened to 60 days after the owner records an effective notice of completion or cessation.
- Subcontractors and suppliers must record within 90 days after completion — shortened to 30 days after the owner records an effective notice of completion or cessation.
"Completion" has a statutory definition that includes actual completion, occupation coupled with cessation of labor, and extended cessation of labor. Because a notice of completion can compress your deadline dramatically, monitor the recorder's index on any project where payment is slow. The lien claim itself must include specific contents and a proof of service affidavit showing service on the owner.
Enforce within 90 days or lose it
Recording is not the finish line. A lawsuit to foreclose the lien must be filed within 90 days after the lien is recorded (Civ. Code § 8460), and a notice of pendency of action must be recorded after the action is filed. If you do not sue in time, the lien expires — and an expired lien left on record can expose the claimant to a petition to release it and to fee awards. If the parties are negotiating, the deadline can be extended by a recorded notice of an agreement to extend credit, but do not rely on informal assurances. Owners can also clear title by posting a lien release bond, in which case your claim continues against the bond rather than the property.
Liens are leverage, not the whole strategy
A mechanics lien secures payment; it does not replace the contract claim. In most cases the foreclosure action travels with breach of contract and common count claims against the party that failed to pay, and related remedies deserve a look: stop payment notices that can tie up construction funds in the lender's or owner's hands, payment bond claims where a bond exists, and prompt payment statutes that add penalties for wrongfully withheld progress payments. Choosing the right combination — and preserving each remedy's separate deadlines — is where well-drafted contracts and early legal advice can save real money.
Talk to a California business attorney
If you are owed money on a California construction project, acting inside the lien deadlines can be the difference between secured leverage and an unsecured claim. Schedule a free consultation or call (949) 418-2113.
This article is attorney advertising and provides general information only. It is not legal advice and does not create an attorney–client relationship. Facts matter; consult a lawyer about your specific situation.
