Mechanic's lien releases for owner-builders: Civil Code §8132/8134 explained

If you pay a sub for ADU work in California and don't get a lien release in return, that sub can file a mechanic's lien against your property for up to 90 days. The lien sits on title. It blocks refinance, blocks sale, and forces you to settle (often for more than the original invoice) to clear it.

This is the silent owner-builder hazard. Most homeowners pay invoices without thinking about lien paperwork, then get a surprise call from their title company two years later when they're trying to pull equity for something else.

This guide explains how mechanic's liens work in California, walks through Civil Code §8132 and §8134 (the conditional and unconditional release forms), and lays out the simple payment discipline that closes the lien window on every sub.

Why subs have lien rights in the first place

California law gives "claimants" the right to file a mechanic's lien on real property when they've provided labor, materials, or services that improved the property and haven't been paid in full. The right is constitutional under California Article XIV §3 and codified in Civil Code §8000-8848.

Claimants include:

• Direct contractors (anyone you hire to provide labor or materials)
• Subcontractors (the people your contractor hires)
• Material suppliers (lumber yards, plumbing supply houses)
• Design professionals (architects, engineers, surveyors)
• Equipment rental companies in some cases

The lien doesn't require a court judgment to attach. The claimant records a Mechanic's Lien with the LA County Recorder, and the lien is on title from that moment. To remove it, you either pay the claim, settle, or file a lawsuit to expunge it (which is expensive).

The 90-day filing window

Civil Code §8412 sets the deadline. A direct contractor (your sub, in owner-builder context) has 90 days from the date of completion to record a lien. "Completion" can mean:

• Actual completion of all work
• Cessation of labor for 60 continuous days
• Acceptance of the work by the owner
• A formal Notice of Completion filed with the county recorder (which shortens the lien window to 60 days)

For owner-builders, the practical implication is that every sub you pay has a 90-day clock running from when their work ended. During that window, they can file a lien. The only thing that closes the window early is a proper lien release.

The two release forms: §8132 and §8134

California Civil Code §§8132-8138 standardizes lien release forms. There are four total, organized as a 2×2 matrix:

	Conditional (§8132)	Unconditional (§8134)
Progress	§8132 Conditional Progress	§8134 Unconditional Progress
Final	§8132 Conditional Final Payment	§8134 Unconditional Final Payment

The forms are statutory. A claimant can refuse a release that doesn't match the §8132/§8134 language exactly. Free templates are available at the CSLB website and through any title company.

Conditional release (§8132): the safe one to hand over with payment

A conditional release says: "I waive my lien rights for this payment, IF the payment actually clears." If you hand a sub a check and a conditional release at the same time, and the check bounces, the release is void. The sub still has lien rights.

This is the safe form to give a sub at the moment of payment. You're not waiving anything you haven't paid for. Use it for every sub payment, full stop.

Unconditional release (§8134): the one the sub signs and returns

An unconditional release says: "Payment was received. I have no further lien rights for this work." Once the sub signs an unconditional release, their lien window for that payment is closed permanently, regardless of what happens to the payment.

You should never sign or accept an unconditional release before payment has cleared. Once a sub signs one, they've given up their lien remedy for that work.

The standard sequence:

1. You hand sub a check + a signed conditional release (§8132) at payment.
2. Check clears your account (usually 2-5 business days).
3. You request a signed unconditional release (§8134) from the sub.
4. You file both releases with your project records.

Progress vs. final releases

The §8132/§8134 forms come in "progress" and "final" versions. The difference is scope.

• A progress release waives lien rights only for the specific amount being paid in that draw. The sub keeps lien rights for any remaining unbilled work.
• A final release waives all lien rights for the project. Sub is done; no more invoices.

For milestone-payment owner-builder projects, every interim draw uses progress releases. The final 10% retainage payment uses a final release.

What a sub will ask for

When subs are professional and know California law, they'll request:

• An unconditional release for any past payment (proves they got paid)
• A conditional release for the current payment (executed against this draw)
• Acceptance of the work in writing (sometimes baked into the release)

When subs are less experienced or working cash, they often don't ask for any release paperwork. That's where owner-builders get into trouble. The lien window stays open, and the sub may later realize they have leverage they didn't use.

The discipline is the same regardless of sub sophistication: every payment goes out with a conditional release attached; you collect an unconditional release after the check clears. No release, no payment.

Material suppliers and preliminary notices

Material suppliers (lumber yards, plumbing supply, hardware stores) have their own lien path under Civil Code §8200. They must serve a "Preliminary 20-Day Notice" within 20 days of first delivering materials to your project. If you receive a preliminary notice in the mail from a supplier you've never heard of, that means a sub bought materials on credit from that supplier, and now you (as the property owner) are on notice that the supplier has lien rights against your property if the sub doesn't pay them.

This is the sneakiest lien path. You can pay your sub in full, in cash, with all the right release paperwork, and still get a lien filed by a supplier the sub never paid. Two defenses:

1. Joint checks. When a sub orders material on credit, write the payment check to both the sub and the supplier ("Pay to: John's Plumbing AND PlumbCo Supply"). This forces both parties to endorse the check, which usually clears the supplier's invoice directly.
2. Lien-release tracking on suppliers. If you've received any preliminary notices from suppliers, request a lien release from each supplier (not just the sub) before final payment.

When liens go bad

A lien sits on title until released. To clear it:

• Pay the claim. Settle with the claimant for the full amount or a negotiated reduction. They sign a release; you record it.
• Lawsuit to expunge. If the lien is invalid (filed late, wrong amount, frivolous claim), you can sue to expunge. Costs typically run $3K-15K in attorney fees and 4-12 months.
• Bond around the lien. Post a surety bond for 125% of the claim amount. The lien transfers from the property to the bond, freeing title for sale or refinance. The dispute then plays out against the bond rather than the property.

The cheapest path is paying the claim. Most owner-builder liens are for legitimate work that wasn't fully paid; settling is usually faster than litigating.

The paperwork discipline that prevents all of this

For every sub on the job, every payment:

1. Issue a conditional progress release with the check.
2. Track the check clearing.
3. Request an unconditional progress release after clearance.
4. File both in the project records.

For the final payment to each sub (typically the 10% retainage):

1. Get a conditional final release with the retainage check.
2. After clearance, get an unconditional final release.
3. File both.

This is 30 seconds of paperwork per payment. The forms are standardized; most title companies offer free templates. Most subs are familiar with the routine. The owner-builders who skip this step are the ones who get surprise liens at refinance.

Sources

• CA Civil Code §8132 (conditional release forms), official text
• CA Civil Code §8134 (unconditional release forms), official text
• CA Civil Code §8412 (lien-recording deadlines), official text
• CSLB Mechanic's Lien fact sheet: cslb.ca.gov

Related guides

• Owner-builder declaration in LA: what CSLB §7044 actually requires
• Workers comp for owner-builders in California
• Sub coordination + draw schedule template

If you're walking into your first sub payment and want the wizard to track which releases you've collected, the PermitPathLA wizard tracks paperwork milestones alongside permits and inspections.