Mechanic's Lien Enforcement in California

The California Contractors State License Board received over 20,000 complaints against contractors in 2023. Many of those disputes involved nonpayment, and the mechanic’s lien is the single most powerful tool a contractor, subcontractor, or material supplier has to collect what they’re owed. But the process is unforgiving. Miss one deadline by a single day, and you lose your lien rights entirely.

I’m Evan Dotta, a partner at Mister Wolf, P.C., and I’ve represented contractors, subcontractors, and property owners on both sides of mechanic’s lien disputes in Los Angeles County. Our real estate law team has seen how a well-preserved lien forces payment within weeks, while a botched one leaves a contractor with nothing after months of work. This post covers every step of the lien process under California Civil Code Section 8400 et seq.: the specific deadlines, notice requirements, and practical moves that determine whether you get paid or lose your claim.

What Is a Mechanic’s Lien and Why Does It Matter in California?

A mechanic’s lien is a security interest in real property. If you contributed labor, materials, or equipment to improve someone’s property and didn’t get paid, California law lets you record a lien against that property. The lien attaches to the real estate itself, not just to the person who owes you money.

This matters because it creates pressure. A property owner can’t sell or refinance with an unresolved lien on the title. Lenders won’t close loans on encumbered property. That title problem often forces payment faster than a lawsuit would.

How Priority Works

Under Civil Code Section 8450, a mechanic’s lien has a special priority rule that sets it apart from most other encumbrances. The lien relates back to the date when work first began on the project, not the date you recorded the lien. If construction started on March 1 and a bank recorded a deed of trust on April 15, your mechanic’s lien recorded months later still has priority over that deed of trust.

This relation-back doctrine is one of California’s strongest mechanic’s lien protections. Lenders know this, which is why construction loans include lien waivers and preliminary notice tracking as standard practice.

Who Can File a Mechanic’s Lien in California?

The right to file depends on your role in the project. California’s lien statutes treat direct contractors differently from subcontractors and material suppliers, and the rules for each are distinct.

Direct Contractors

A direct contractor (also called a general contractor or prime contractor) has a contract directly with the property owner. Under Civil Code Sections 8200 and 8400, a direct contractor usually does not need to serve a preliminary notice on the owner because the owner already contracted with them. But if there is a construction lender, the direct contractor must serve preliminary notice on the lender before recording a lien.

Subcontractors and Suppliers

Subcontractors, material suppliers, and equipment rental companies don’t have a direct relationship with the property owner. To preserve their lien rights, they must serve a preliminary notice under Civil Code Section 8200 within 20 days of first furnishing labor or materials to the project. This 20-day rule is the most commonly missed deadline in the entire lien process.

If you’re a subcontractor starting work on day one but don’t serve your preliminary notice until day 30, you can only claim lien rights for work performed in the 20 days before you served the notice, plus everything after. You lose the first 10 days of work. Serve late enough, and you lose a large portion of your claim.

Do this now: If you’re a subcontractor or supplier about to start work on any project, serve your preliminary notice on the same day you first deliver materials or show up on site. Don’t wait. Not one day.

How Do You Serve a Preliminary Notice Correctly?

The preliminary notice must be served on the property owner, the direct contractor, and the construction lender (if there is one). Civil Code Section 8200 requires the notice to include: a description of the labor or materials being furnished, the name and address of the person giving notice, the name of the person who contracted for the work, and a description of the job site.

Service Methods

You can serve the preliminary notice by personal delivery, by registered or certified mail, or by leaving it at the person’s residence or place of business with someone who appears to be in charge. Use certified mail with return receipt requested every time. You need a paper trail. If you end up in LA Superior Court filing a lien foreclosure action, the judge will ask for proof of service.

The Property Owner Identification Problem

Here’s a practical challenge I see on Los Angeles projects constantly. You’re a subcontractor hired by a general contractor. You know the GC’s name. You don’t know who actually owns the property. In LA, properties are often held by LLCs, trusts, or family partnerships. The name on the building permit doesn’t match the name on the deed.

Pull the property’s ownership information from the Los Angeles County Assessor’s office before you serve your preliminary notice. You can search by address on their website. Get the correct legal owner’s name and mailing address. Serving a preliminary notice on the wrong entity invalidates it.

What Are the Deadlines for Recording a Mechanic’s Lien?

The deadlines are tight. Under Civil Code Section 8412, you must record your mechanic’s lien with the county recorder within 90 days after completion of the work of improvement. “Completion” has a specific legal meaning: it means actual completion of the project, cessation of labor for a continuous 60-day period, or recordation of a notice of completion or notice of cessation.

How a Notice of Completion Changes Everything

Property owners frequently record a notice of completion under Civil Code Section 8182 to shorten the lien deadlines. Once a notice of completion is recorded, the deadlines drop sharply:

Direct contractors have 60 days (instead of 90) to record their lien
Subcontractors and suppliers have 30 days to record their lien

Thirty days. That’s it. If you’re a subcontractor on a large commercial project in downtown LA and the owner quietly records a notice of completion, your clock starts running whether you know it or not.

I represented a plumbing subcontractor who had done $87,000 worth of work on a mixed-use project near Koreatown. The property owner recorded a notice of completion on a Friday. My client didn’t find out until five weeks later. By then, the 30-day window had closed. The lien rights vanished. Eighty-seven thousand dollars, unrecoverable through the lien process, lost to five missed days.

Do this now: Set up a monitoring system. Check the county recorder’s website weekly for any notices of completion on projects where you have outstanding invoices. Subscribe to construction data services that send automatic alerts.

How Do You Actually Record the Mechanic’s Lien?

Recording the lien requires preparing a lien claim document that meets Civil Code Section 8416. The claim must include:

A statement of the claimant’s demand, after deducting any credits and offsets
The name of the property owner (or reputed owner)
A general statement of the kind of work furnished by the claimant
The name of the person who hired the claimant
A description of the job site sufficient for identification
The claimant’s signature, made under penalty of perjury

The lien must be verified, meaning signed under penalty of perjury by the claimant or an authorized agent. An unverified lien is invalid.

Filing at the County Recorder

You file the lien with the county recorder’s office in the county where the property is located. In Los Angeles County, that’s the Registrar-Recorder/County Clerk at 12400 Imperial Highway in Norwalk, or file electronically through approved vendors. The recording fee is roughly $25 to $50 for the first page plus additional per-page fees.

Civil Code Section 8416 requires service of a copy of the claim of mechanics lien, with the statutory Notice of Mechanics Lien, on the owner or reputed owner. That proof of service affidavit is part of the lien document itself. In practice, serve before recording and keep the mailing certificate or certified mail receipt with your project file. Failure to serve the claim as required makes the lien unenforceable as a matter of law.

What Happens After You Record the Lien?

Recording the lien creates the security interest in the property. But it doesn’t enforce anything by itself. To collect, you must either negotiate a settlement or file a lawsuit.

The 90-Day Foreclosure Deadline

Under Civil Code Section 8460, you must file a lien foreclosure action within 90 days after recording the lien. If you don’t, the lien expires and becomes unenforceable. A recorded extension-of-credit agreement can extend the deadline in narrow circumstances, but an email saying “we’re still talking” does nothing. The court won’t care that you were negotiating.

This is the deadline that catches most people. A contractor records the lien, negotiates with the property owner, the owner stalls, weeks pass, and suddenly the 90 days are up. I’ve seen it happen countless times.

Filing the Foreclosure Action

The lien foreclosure action is filed in the superior court of the county where the property is located. For Los Angeles County projects, that’s the LA Superior Court at the Stanley Mosk Courthouse or another appropriate branch. The complaint should include causes of action for lien foreclosure, breach of contract, and quantum meruit (the reasonable value of services rendered if the contract claim fails).

Record a lis pendens when you file the lawsuit. The lis pendens notifies the world that the property is the subject of litigation, preventing the owner from selling to a buyer who could claim ignorance of the dispute.

Can the Property Owner Remove the Lien Without Paying?

Yes. California provides a mechanism called a release bond under Civil Code Section 8424. The property owner (or any other interested party) can file a surety bond with the court equal to 125% of the lien claim. Once the bond is recorded, the lien is released from the property and transferred to the bond.

This doesn’t make your claim disappear. You still have the right to recover against the bond. But it removes the pressure created by tying up the property. Property owners use release bonds when they need to sell or refinance and can’t wait for the lien dispute to end.

From the claimant’s perspective, a release bond means you’re litigating against an insurance company’s bond rather than the property itself. The practical difference: the property owner can move on with their transaction, and your recovery depends on winning the lawsuit and collecting from the surety.

What Should You Document Throughout the Project?

Documentation wins lien cases. Without it, you’re arguing your word against the property owner’s word.

Build Your Paper Trail

From the first day on any project, keep the following:

Written contracts and change orders. Document every change to the scope of work in writing. Verbal agreements on a construction site are nearly worthless in court.
Daily logs. Record who was on site, what work was performed, and what materials were used. A superintendent’s log from January 15 carries far more weight than a contractor’s memory in June.
Photographs. Take photos of work in progress at every stage. Date-stamped, geotagged photos from your phone are admissible evidence and cost nothing. Photograph rough-in work before drywall goes up. Photograph material deliveries.
Invoices and payment records. Keep every invoice you send, every payment you receive, and every outstanding balance. Save copies of cancelled checks or wire transfer confirmations.
Correspondence. Save emails, texts, and letters. If the property owner or GC acknowledged your work, praised it, or complained, save it all.

Do this now: Create a project folder (digital and physical) for every active job. Add your contract, preliminary notice, invoices, and photos from day one. If you need to record a lien, you’ll have everything organized and ready.

How Does the Mechanic’s Lien Process Work for Los Angeles Construction Projects?

Los Angeles has unique characteristics that affect the mechanic’s lien process. Projects range from $50,000 kitchen remodels in Silver Lake to $500 million mixed-use towers in DTLA. The lien law applies the same way to all of them, but the practical dynamics differ.

Permit Issues

The City of Los Angeles Department of Building and Safety (LADBS) issues building permits for construction projects. Sometimes work proceeds without proper permits, or the permits don’t cover the full scope of work. Unpermitted work can complicate your lien claim. The owner may argue that unpermitted work doesn’t qualify as an improvement to the property. In practice, courts have generally upheld lien rights for unpermitted work, but the issue adds complexity.

Multi-Party Projects

Large LA projects often involve dozens of subcontractors and suppliers. When the owner or GC runs out of money, multiple parties file liens on the same property. The priority rules under Section 8450 treat all mechanic’s liens equally (they all relate back to commencement of work). But if the property value doesn’t cover all the liens, recovery becomes proportional. You may get 60 cents on the dollar rather than full payment.

The CSLB Licensing Requirement

Here’s a trap that catches unlicensed contractors in LA: under Business and Professions Code Section 7031, a contractor who performs work without a valid California contractor’s license cannot file a mechanic’s lien, cannot sue for breach of contract, and cannot recover in quantum meruit. The CSLB enforces this strictly. If your license lapsed during the project, even briefly, your lien rights can be compromised. Before you start any project, verify your CSLB license status and keep it current throughout.

Common Mistakes That Kill Mechanic’s Lien Claims

After handling these disputes in LA County for years (see also our post on contractor disputes in Southern California), I’ve seen the same mistakes come up repeatedly.

Late Preliminary Notice

The number one killer. A subcontractor starts work, gets busy with construction, and forgets to serve the preliminary notice within 20 days. By the time they realize the owner isn’t paying and they need lien rights, months have passed. The damage is done.

Wrong Property Description

The lien must describe the property with enough specificity to identify it. The street address works for a single-family home in Hancock Park. For a large commercial parcel near LAX, use the assessor’s parcel number (APN) along with the street address. A wrong property description invites challenge.

Overstating the Claim

Civil Code Section 8422 allows a property owner to petition the court for a release order if the lien claim is “willfully exaggerated.” If you did $50,000 worth of work and record a lien for $150,000, you’re inviting challenge and potential sanctions. State your claim accurately.

Failing to File the Foreclosure Action

I already covered the 90-day rule under Section 8460, but it bears repeating because it’s the second most common mistake I see. Contractors record the lien and then negotiate. Negotiating is fine. But file the foreclosure action before the 90 days expire, even if negotiations are going well. You can dismiss the lawsuit later if you reach a settlement.

What Does a Typical Timeline Look Like?

Here’s a realistic timeline for a subcontractor on an LA residential remodel:

Day 1: First furnish labor or materials. Serve preliminary notice (Civil Code Section 8200).
Ongoing: Perform work, submit invoices, document everything.
Project completes: Note the date of completion. If the owner records a notice of completion, your clock starts.
Within 30 days of notice of completion (or 90 days of actual completion): Record the mechanic’s lien with the LA County Registrar-Recorder (Civil Code Section 8412).
Within 10 days of recording: Serve a copy of the recorded lien on the property owner (Civil Code Section 8416(b)).
Within 90 days of recording the lien: File a lien foreclosure action in LA Superior Court (Civil Code Section 8460). Record a lis pendens.
Litigation or settlement: Pursue the case through trial or negotiate a resolution.

The entire process, from first furnishing to resolution, can take six months to two years depending on whether the case settles or goes to trial.

How Much Does It Cost to Enforce a Mechanic’s Lien?

Costs vary depending on complexity. Recording the lien itself costs a few hundred dollars for preparation and filing. The real expense is the foreclosure lawsuit. LA Superior Court filing fees run about $435 for a limited civil case (under $25,000) or $435 to $580 for an unlimited case. Attorney fees for a straightforward lien foreclosure typically range from $5,000 to $25,000 through resolution, depending on whether the case settles early or goes to trial.

Don’t assume attorney fees are automatically recoverable in a lien foreclosure action. Civil Code Section 8488 provides attorney fees in a petition to release an invalid lien, not as a general fee-shifting rule for every lien foreclosure. Fees may still be recoverable under a written contract, a prompt payment statute, a stop payment notice claim, or another statute. This distinction matters when deciding whether a $12,000 unpaid balance justifies a full foreclosure lawsuit.

When Should You Talk to a Mechanic’s Lien Attorney?

The honest answer is early. Ideally before you start the project. At Mister Wolf, P.C., we review contractor agreements and advise on preliminary notice strategy before the first shovel hits dirt. A one-hour consultation can prevent mistakes that cost tens of thousands of dollars later.

If you’re already past that point, contact an attorney immediately if any of these apply:

You haven’t been paid and the project is approaching completion
A notice of completion has been recorded and your lien deadline is approaching
You’ve recorded a lien and the 90-day foreclosure deadline is approaching
The property owner has filed a petition to release your lien
You’re a property owner facing a lien you believe is invalid

Don’t wait until two days before the deadline. Lien cases require document review, legal research, and careful drafting. Give your attorney time to do the job right.

If you’re a contractor or subcontractor on a Los Angeles project with an unpaid balance, pull your contract, preliminary notice (if you served one), and invoices. Check the county recorder’s website for any notice of completion. Call our office with those documents so we can tell you exactly where you stand and what deadlines you’re facing.

Mechanic's Lien Enforcement in California: A Step by Step Guide