What Is a Mechanics Lien in California?

A mechanics lien is a security interest that contractors, subcontractors, laborers, and material suppliers can record against the real property they improved when they are not paid. It converts an unpaid invoice into a claim against the land itself, which the claimant can foreclose on, forcing a sale of the property to satisfy the debt. The right is written into the California Constitution and implemented in Civil Code section 8400 and following.

The power comes with unforgiving procedure. Most claimants other than the direct contractor must serve a 20 day preliminary notice near the start of their work to preserve lien rights. The lien itself must be recorded within a short window after the project ends, generally 90 days after completion, shortened when a notice of completion or cessation is recorded. And the claimant must file a foreclosure lawsuit within 90 days of recording the lien or it expires. Miss any step and the lien dies, leaving only contract remedies.

For owners, an improper or expired lien can be challenged by petition, and there are bonding procedures to clear title while the fight continues. For claimants, calendar discipline is everything.

Who Can Record One

California's mechanics lien right is constitutional in origin and is implemented by the Civil Code. It generally extends to direct contractors, subcontractors, material suppliers, equipment lessors, laborers, and design professionals who furnished work or materials that were actually used to improve the property.

Contractors performing work requiring a license must generally be properly licensed at all times during performance. An unlicensed contractor not only loses the lien but, under the Business and Professions Code, can be required to disgorge compensation already received. That is one of the harshest provisions in California construction law and it is enforced.

The Deadlines That Decide Most Cases

The sequence is unforgiving. A preliminary notice generally must be served within twenty days of first furnishing labor or materials by anyone without a direct contract with the owner, and it protects only work furnished in the twenty days before service plus everything after.

The lien itself must generally be recorded within ninety days after completion of the work of improvement, shortened to sixty days for a direct contractor and thirty days for others if a valid notice of completion or cessation is recorded. Then the lien claimant must file suit to foreclose within ninety days of recording, or the lien expires. Missing any one of these is generally fatal to the lien, even though the underlying debt survives.

Removing or Defending Against a Lien

An owner facing a lien has several routes: demonstrate a missed deadline or defective notice, petition the court to release a lien that has expired because no foreclosure action was filed, or record a lien release bond, typically at one hundred twenty five percent of the lien amount, which transfers the claim from the property to the bond and clears title.

Owners should also confirm that the work was actually performed and unpaid before treating the lien as valid. A knowingly false or inflated lien can expose the claimant to liability. See our construction law page for the broader dispute framework.