California Mechanics Lien Law Glossary

Key terms in California mechanics lien law, defined in plain language for contractors, subcontractors, and property owners.

Claimant

Any person entitled to record a mechanics lien — including direct contractors, subcontractors of any tier, material suppliers, equipment lessors, and design professionals who furnish labor, services, or materials to a work of improvement.

Completion

Under Civil Code §8180, completion of a work of improvement occurs when: (1) actual completion, (2) occupation or use by the owner, (3) cessation of labor for 60 continuous days, or (4) acceptance by the owner.

Conditional Waiver

A lien waiver that becomes effective only when the described payment actually clears. The safe form to use when exchanging a waiver simultaneously with a check that has not yet cleared. California provides two statutory conditional waiver forms (progress and final payment).

Construction Lender

A financial institution that provides financing for a construction project, typically secured by a deed of trust on the property. Construction lenders are a required recipient of preliminary notices and are bound by stop payment notices.

Demand to Release

Under Civil Code §8480, a written demand by a property owner requiring a lien claimant to release a defective or satisfied lien within 10 days. Failure to release without just cause makes the claimant liable for actual damages, attorney's fees, and a $2,000 penalty.

Direct Contractor

A contractor who has a direct contractual relationship with the property owner (or the owner's authorized agent). Direct contractors are exempt from the 20-day preliminary notice requirement.

Discharge Bond

See Lien Release Bond.

Expungement

The court-ordered release of a mechanics lien from the property title. A property owner can petition the court to expunge a lien that is procedurally defective or for which the claimant cannot establish probable validity.

Foreclosure (Lien)

The process of enforcing a mechanics lien through a civil lawsuit in superior court. If successful, results in a court order directing the sale of the property to satisfy the lien. Must be filed within 90 days of recording the lien.

Lien Release Bond

A surety bond in the amount of 125% of the lien amount, posted by the property owner to release the mechanics lien from the property title. The claimant's rights transfer from the property to the bond. Governed by Civil Code §8424.

Little Miller Act

California's public works payment bond statute (Public Contract Code §9550 et seq.), requiring payment bonds on public construction contracts over $25,000. Allows subcontractors and suppliers to make direct claims against the bond on public projects where property liens are unavailable.

Mechanics Lien

A security interest in real property held by a contractor, subcontractor, or supplier who has furnished labor, services, or materials to a work of improvement and has not been paid. Governed by California Civil Code §8000 et seq. and rooted in Article XIV, Section 3 of the California Constitution.

Notice of Cessation

A notice recorded by a property owner when continuous work on a project has ceased for at least 30 days. Like a Notice of Completion, it shortens the lien filing window to 60 days for direct contractors and 30 days for subcontractors and suppliers.

Notice of Completion

A notice recorded by a property owner with the county recorder within 15 days of actual project completion. Shortens the lien filing period to 60 days for direct contractors and 30 days for subcontractors and suppliers (versus 90 days without the notice).

Payment Bond

A surety bond posted by a contractor guaranteeing payment to all subcontractors, suppliers, and laborers on a project. Required on all California public works contracts over $25,000. Allows unpaid subcontractors and suppliers to make direct claims against the bond.

Performance Bond

A surety bond posted by a contractor guaranteeing completion of the project according to the contract terms. Protects the project owner against contractor default or abandonment. Does not protect subcontractors or suppliers.

Preliminary Notice

A written notice served by subcontractors and suppliers within 20 days of first furnishing labor or materials, as a prerequisite to mechanics lien and stop payment notice rights. Must be served on the owner, direct contractor, and construction lender. Governed by Civil Code §8200–8216.

Prompt Payment

California statutory requirements mandating timely payment in the construction industry. Owners must pay GCs within 30 days of an undisputed invoice; GCs must pay subs within 7 days of receiving payment from the owner. Violations carry a 2% monthly penalty plus attorney's fees.

Quantum Meruit

A legal doctrine allowing recovery for the reasonable value of services or materials furnished, independent of contract. Common in construction disputes where no written contract exists or where the contract is unenforceable (e.g., unlicensed contractor cases).

Reputed Owner

The person or entity that is reasonably believed to be the owner of the property at the time a mechanics lien or preliminary notice is filed, even if they are not the actual record owner. Using the reputed owner's name on a lien or preliminary notice is generally valid.

Stop Payment Notice

A notice served on a construction lender (or public entity) by an unpaid contractor or supplier, requiring the lender to withhold funds equal to the claimed amount from further disbursements to the borrower. Governed by Civil Code §8500 et seq.

Sub-subcontractor

A contractor who performs work under contract with a subcontractor (rather than with the direct contractor or owner). Sub-subcontractors have the same preliminary notice and lien rights as subcontractors and must serve a preliminary notice within 20 days of first furnishing work.

Unconditional Waiver

A lien waiver that takes effect immediately upon signing, regardless of whether payment has been received or cleared. Should only be signed after payment has been confirmed in your bank account. California provides two statutory unconditional waiver forms (progress and final payment).

Verification

A sworn statement signed under penalty of perjury, required as part of a valid California mechanics lien under Civil Code §8416. The verification confirms that the claimant has read the lien and believes its contents to be true. A missing or unsigned verification renders the lien defective.

Work of Improvement

Broadly defined under Civil Code §8050 to include: any structure (building, wharf, bridge, road), improvement to real property, grading, filling, leveling, planting, demolition, and related work. The scope of what qualifies as a work of improvement is construed broadly to maximize the availability of lien rights.

Wrongful Lien

A mechanics lien filed without a good faith belief that it is valid or in an amount known to be overstated. Under Civil Code §8422, a property owner can recover actual damages, attorney's fees, and a statutory penalty from a claimant who files a wrongful lien.

Frequently Asked Questions