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State deadline reference

California Lien Deadlines for Material Suppliers

Use this California guide to check preliminary notice, lien filing, and enforcement timing before a receivable becomes unprotected.

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California deadline risk

Missing a California notice or lien filing deadline can eliminate lien rights. Run the calculator early and verify close calls.

California Lien Deadlines

Deadline TypeTimingDetails
Preliminary noticeWithin 20 days of first furnishingNotice rules can depend on role, project type, and contract chain. Send notices early when in doubt.
Mechanics lien filing90 days after completion (or 30 days if Notice of Completion recorded)Use this as a planning estimate and verify the filing trigger.
Enforcement90 days after filing lienFiling a lien is not the final step. Track enforcement deadlines separately.

Common Supplier Mistakes in California

Waiting until the invoice is old

Run the deadline check when materials are furnished, not when collections already become urgent.

Assuming notice is optional

Preliminary notice rules can change by role and project type. Treat the notice path as a required workflow check.

Treating estimates as legal approval

Use the calculator for operational tracking, then verify high-value or disputed claims with counsel.

Need the exact date?

Use the calculator with your invoice date to estimate the California deadline.

Calculate Your Deadline

Select California in the calculator to get a date-specific result.

Frequently Asked Questions

What is the mechanics lien deadline in California?

90 days after completion (or 30 days if Notice of Completion recorded)

Does California require a preliminary notice?

Within 20 days of first furnishing

Is this legal advice?

No. This guide is a deadline reference for construction finance workflows. Verify critical filing decisions with licensed counsel.

This guide is for informational purposes only and does not constitute legal advice.