California Mechanics Lien Law — FAQ

A mechanics lien is a legal claim recorded against a property by a contractor, subcontractor, or supplier who was not paid for work or materials. It attaches to the property's title and can force a sale to satisfy the unpaid debt if not resolved.

Any person who furnishes labor, services, equipment, or materials for a work of improvement — including contractors, subcontractors, sub-subcontractors, material suppliers, equipment lessors, and some design professionals — has the right to file a mechanics lien under California Civil Code §8000 et seq.

For subcontractors and suppliers: 90 days from the last day of work (or 30 days after a Notice of Completion is recorded). For direct contractors: 90 days from project completion (or 60 days after a Notice of Completion). These deadlines are absolute — there are no extensions.

A preliminary notice (20-day notice) must be served on the owner, GC, and construction lender within 20 days of first furnishing labor or materials. It is required for subcontractors and suppliers to preserve full lien rights. Direct contractors are exempt. Failure to serve a timely notice limits lien rights to the 20 days before the notice was actually served.

Yes. California subcontractors have independent lien rights against the property regardless of whether the owner paid the general contractor. This is one of the most important features of California mechanics lien law.

The lien expires automatically and becomes legally unenforceable. You would need to rely on other remedies — contract lawsuit, stop payment notice enforcement — but the property is no longer security for your claim. The 90-day foreclosure deadline cannot be extended by the court, only by a written agreement with the owner recorded before the deadline expires.

A stop payment notice requires a construction lender (or public owner) to withhold funds equal to the claimed amount from future disbursements. It is a powerful parallel remedy to the mechanics lien, especially effective when a project has an active construction loan with funds still to be disbursed.

Options include: (1) paying the claimant and recording a release, (2) petitioning the court to expunge a defective lien, (3) posting a lien release bond (125% of the lien amount) to free the property title while the dispute continues, or (4) waiting for the lien to expire if the claimant does not foreclose within 90 days.

A lien release bond is a surety bond that substitutes for a mechanics lien on the property title, allowing a sale or refinancing to proceed while the payment dispute is resolved. The bond must equal 125% of the lien amount. Once posted and recorded, the lien is released from the property — but the claimant can still sue on the bond.

A conditional waiver takes effect only when the described payment actually clears — safe to sign before receiving the check. An unconditional waiver is immediately effective and irrevocable — only sign after payment has fully cleared your bank account. California has four mandatory statutory waiver forms under Civil Code §8120–8138.

This is a complex area. An unlicensed contractor generally cannot enforce a contract or collect compensation under Business & Professions Code §7031. However, the interaction between unlicensed contractor restrictions and lien rights involves nuance — some lien rights may survive even for unlicensed claimants in limited circumstances. Consult an attorney.

Lien foreclosure is the legal process of enforcing a mechanics lien through a civil lawsuit. If the owner does not pay, you file a complaint in superior court seeking a judgment and a court order directing that the property be sold to satisfy the debt. The lawsuit must be filed within 90 days of recording the lien.

The full process from preliminary notice through foreclosure judgment can take 6–18 months depending on whether the dispute settles. Many cases resolve after lien recording alone (60–90 days) once the owner realizes the lien threatens a pending sale or refinancing.

A Notice of Completion is a document the property owner records with the county recorder within 15 days of project completion. Its effect is to shorten the lien filing window: direct contractors have 60 days (not 90) and subcontractors/suppliers have only 30 days (not 90) after recording. Missing the shorter deadline after a Notice of Completion is recorded is a common and fatal mistake.

Quantum meruit is a legal doctrine allowing recovery for the reasonable value of services rendered, even without a written contract or when the contract is unenforceable. It is a common cause of action in construction disputes where work was performed but the parties disagree about the contractual basis for payment.

California has strict prompt payment statutes. Owners must pay general contractors within 30 days of undisputed invoices. GCs must pay subcontractors within 7 days of receiving payment from the owner. Late payment carries a penalty of 2% per month plus attorney's fees. These rules apply to both public and private construction.

Yes. Mechanics liens can be filed on any private real property, including condominiums, multi-unit residential buildings, and commercial properties. On condominium projects, the lien typically attaches to the specific unit where work was performed, though in some cases the entire project may be affected depending on the nature of the work.

A mechanics lien arises from unpaid construction work and must be recorded within specific statutory deadlines. It gives the claimant a security interest in the specific property where work was performed. A judgment lien arises from a court judgment and can attach to all real property owned by the debtor in the county where the judgment is recorded — but requires first obtaining a judgment, which takes longer.

California does not require an attorney to file a mechanics lien — individuals and businesses can file pro se. However, mechanics lien law is technical, deadline-driven, and unforgiving. Errors in the lien form, missed deadlines, or failure to serve required notices can permanently extinguish your rights. Most experienced contractors and all attorneys recommend using legal counsel for any substantial lien claim.

Recording fees are typically $15–$25 per page at the county recorder's office. Attorney fees vary by firm and complexity. Bay Legal PC offers free initial consultations to discuss your situation and provide a cost estimate before you commit.

On California public works projects, contractors must post payment bonds guaranteeing payment to all subcontractors and suppliers. If a subcontractor is not paid, they can file a bond claim directly with the surety company — bypassing the property lien process (which is unavailable on public property). Bond claims must be filed within 6 months of project completion.

A bankruptcy filing by the property owner triggers an automatic stay that halts most collection actions, including mechanics lien enforcement. However, if you have already recorded a valid lien before the bankruptcy filing, your lien may be treated as a secured claim in the bankruptcy — giving you priority over unsecured creditors. Consult an attorney immediately if the owner files for bankruptcy.

A wrongful lien is a mechanics lien filed without a good faith belief that it is valid — for example, a lien filed by a contractor who was already paid, or that grossly overstates the amount owed. California Civil Code §8422 allows the property owner to recover actual damages, attorney's fees, and a statutory penalty against the claimant for a wrongful lien.

Stop payment notices are primarily effective on projects with active construction loans, because they require the lender to withhold funds. On a project financed entirely with the owner's equity (no construction loan), the mechanics lien is generally the stronger remedy.

A direct contractor has a contract directly with the property owner. A subcontractor contracts with the direct contractor (or another sub) rather than with the owner directly. This distinction matters primarily for preliminary notice requirements: direct contractors are exempt from the 20-day preliminary notice; subcontractors and suppliers are not.