Notice of intent to lien in California

When an invoice goes unpaid, a notice of intent to lien is often the fastest, cheapest way to get paid — frequently without ever recording an actual lien. It’s a demand letter with teeth. Here’s how it works and when to use it.

What is a notice of intent to lien?

It’s a written demand that warns the owner, general contractor, and construction lender that you intend to record a mechanics lien unless you’re paid by a date you set. Unlike the preliminary notice, which you serve at the start of a job, the notice of intent comes later — after the work is done and the money hasn’t arrived.

Is it required?

No. On private works in California, a notice of intent to lien is not strictly required (the mechanics lien framework lives in Cal. Civ. Code § 8400 et seq.). But that doesn’t make it optional in practice — it’s one of the most effective collection tools a subcontractor has, precisely because it’s a credible last step before a lien.

Why is it so effective?

A recorded mechanics lien clouds the property’s title. That can block a sale or refinance and can prompt a construction lender to freeze the owner’s draws. Owners and general contractors know this, so a clear, professional notice of intent often shakes loose a check that weeks of phone calls couldn’t.

When and how to send it

Send it as soon as payment is clearly overdue, giving a short deadline — typically 5 to 20 days. Make sure you send it with enough runway to still record your lien if you’re ignored; the lien clock keeps ticking (90 days from completion, or as little as 30 if a Notice of Completion is recorded). Need wording to start from? See the California notice of intent to lien template.

This page is general information, not legal advice, and does not create an attorney–client relationship. California lien and notice deadlines are strict and fact-specific — “completion” alone can be triggered by actual completion, the owner’s occupancy or use, or a 60-day cessation of labor. Notice Harbor is not a law firm. Confirm any deadline that matters to your claim with a licensed California construction attorney.