A Homeowner Won't Pay My Final Invoice — What Can I Do in California?

California contractor not getting paid on the final invoice? Here's how to use demand letters, mechanics liens, and small claims to collect what you're owed.

The final invoice sits unpaid. You've called twice. You got a text about "cash flow issues." Then nothing. This is the point where most contractors decide to wait — and waiting is exactly what the homeowner is counting on.

Short answer: Send a written demand citing the contract and a payment deadline, document everything, and move to a mechanics lien if they don't respond. California law (Cal. Code Civ. Proc. § 337) gives you four years on a written contract, but your lien rights have a much shorter fuse — typically 90 days from project completion.

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The Invoice Is Not a Request

The most expensive mistake a contractor makes isn't underbidding a job. It's treating the final invoice like a polite suggestion.

An invoice without a deadline is a hope. A documented demand with a legal basis and a response window is something else — it tells the homeowner that a clock is running and that ignoring it has consequences. Most homeowners who ghost a contractor stop ghosting the moment the word "lien" appears on paper.

California Civil Code §§ 8000–9566 (the Mechanics Lien Law) gives contractors the right to attach a claim to the homeowner's property itself. A homeowner who can't sell, refinance, or transfer title because there's a lien on their property has a very concrete reason to write the check.

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Your Three Moves, in Order

> Cal. Civ. Code § 8412 — A mechanics lien must be recorded within 90 days of project completion (or within 60 days if the owner records a notice of completion). Miss this window and the lien right is gone permanently. The clock starts the day you finish the job.

Step 1: Written demand, immediately.

If you have a written contract — and under Cal. Bus. & Prof. Code § 7159, home improvement contracts over $500 must be written — you have a four-year statute of limitations under Cal. Code Civ. Proc. § 337. But the lien clock doesn't wait. The demand letter should name the balance, reference the contract and completion date, and give the homeowner 10 to 14 days to respond.

Step 2: Small claims, if the balance fits.

Under $12,500? Cal. Code Civ. Proc. § 116.221 sets that ceiling for individuals. Filing fees run $30 to $75, no attorney required. The catch: a judgment is not a lien. You still have to collect from someone who's been ignoring you.

Step 3: Record the lien before the window closes.

For balances above the small claims ceiling, or whenever you want title pressure, the mechanics lien is the instrument. After recording, you have 90 more days to file a foreclosure lawsuit (Cal. Civ. Code § 8460) or the lien expires.

The lien is the hammer. The demand letter is what most homeowners respond to before it falls.

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Your Three Paths at a Glance

| Path | When to Use | Cost | Timeline | |------|------------|------|----------| | Demand letter | First move, always | $89–$500 | 2–4 weeks (typically) | | Small claims | Balance ≤ $12,500 | $30–$75 filing | 1–3 months to hearing | | Mechanics lien | Any balance, max leverage | $200–$600 to record | Clears when paid or bonded |

A demand letter almost always comes first. It's faster, cheaper, and builds a paper trail that California courts notice.

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Don't Wait for the "Right Moment"

Rosa, a tile contractor in the Inland Empire, finished a $6,800 bathroom remodel in January. The homeowner said he'd pay after his bonus came in February. February passed. Then March. By April, Rosa was past the 90-day lien window — down to demand letter and small claims as her only options. She collected eventually, but she'd surrendered months of leverage she was legally entitled to hold.

Send the demand early, before the homeowner has decided the dispute is a negotiation. The letter works best while all options are still live.

For a complete collection sequence — including what to do at every 30-day interval — see Why California Contractors Lose Thousands to Unpaid Invoices — and the 30-60-90 Sequence That Fixes It.

If an attorney-signed letter is the right tool and paying a retainer doesn't make economic sense at $6,800, Talk to My Lawyer produces them for a flat fee — a California attorney reviews the facts and signs.

This article is general information about California law and is not legal advice. Every situation is different. For advice on your specific dispute, consult a licensed California attorney.