--- title: California Pre-Lien Notice: Requirements & Deadlines slug: pre-lien-notice-california description: California pre lien notice rules explained: 20-day deadline, who must file, statute citations, and consequences. LienFlash files yours in 2 minutes. published: 2026-07-24T10:11:21.012Z updated: 2026-07-24T10:11:21.012Z canonical: https://lienflash.app/blog/pre-lien-notice-california author: Grant Larsen publisher: LienFlash --- # California Pre-Lien Notice: Requirements & Deadlines for Subs *Last updated: July 2025* California subcontractors, material suppliers, and equipment lessors must serve a 20-day preliminary notice within 20 days of first furnishing labor or materials to a private construction project in order to preserve mechanics lien rights, under [Cal. Civ. Code § 8200](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8200.). The notice must be served on the property owner, the general contractor, and the construction lender (if any) via certified mail, registered mail, first-class mail with certificate of mailing, or personal service. Late service does not eliminate lien rights entirely — but it limits protection to labor and materials furnished in the 20 days before the date of service. Failing to serve the notice at all is a complete bar to mechanics lien rights on private works. Direct contractors (general contractors) who have a direct contract with the owner are exempt from this requirement. ## Who Is Required to Serve a California Preliminary Notice? Any subcontractor, material supplier, or equipment lessor who does not have a direct contract with the property owner must serve a 20-day preliminary notice to preserve their mechanics lien rights on private works, under [Cal. Civ. Code § 8200](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8200.)(a). This covers the vast majority of subs — electricians, plumbers, roofers, HVAC contractors, drywall crews, painters, and specialty trades at every tier. General contractors who hold a direct contract with the owner are not required to serve the notice. But if you are a sub-tier subcontractor — meaning you contract with a GC or another sub rather than directly with the owner — you must serve it. There are no exceptions based on contract size, project type, or the dollar amount of your scope. If you supplied labor or materials on a California private works project and you are not the direct contractor, the rule applies to you. On public works projects, the rules differ. Labor and material bond claimants on public jobs must serve a stop payment notice ([Cal. Civ. Code § 9350](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=9350.) et seq.) rather than a mechanics lien notice, and separate deadlines apply. This article focuses on private works, which represent the majority of subcontractor exposure. ## What Is the Exact Deadline to Serve the Notice? The deadline is 20 days from the date you first furnish labor, materials, or equipment to the project — not 20 days from when you sign the contract, not 20 days from when you break ground, and not 20 days from the first invoice. The clock starts the moment you first deliver materials or perform work on-site. Under [Cal. Civ. Code § 8204](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8204.)(a), if you miss the 20-day window, you can still serve the notice late — but your lien protection is limited to labor and materials furnished within the 20 days immediately preceding service of the notice, plus any labor and materials furnished after that date. Everything you furnished before that 20-day lookback window is unprotected. On a long project where you've been working for months, that can mean losing the right to lien for the bulk of your contract value. **Example:** You're an HVAC sub who starts roughing in ductwork on March 1. You don't serve the notice until April 30 — 60 days after first furnishing. Your lien rights are now limited to work performed on or after April 10 (20 days before April 30) and anything after. All the work from March 1 through April 9 is unprotected. Serve the notice on day one or day two of furnishing. There is no downside to serving it early. ## Who Must Receive the Preliminary Notice? Under [Cal. Civ. Code § 8200](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8200.)(a), the preliminary notice must be served on three parties: 1. **The owner or reputed owner** of the property 2. **The direct contractor (general contractor)** or reputed general contractor 3. **The construction lender or reputed construction lender**, if any You need to identify the construction lender before serving the notice. Construction lenders are often recorded — check the county recorder's office for a deed of trust or a construction loan agreement. If there is a lender and you fail to serve them, your lien rights against the lender's interest may be compromised even if you properly served the owner and GC. If you do not know the identity of the construction lender, [Cal. Civ. Code § 8200](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8200.)(b) allows you to request that information from the owner. The owner is required to provide it. In practice, the fastest route is to run a property records search at the county recorder before you start work, confirm the owner and lender identities, and send the notices simultaneously. ## What Are the Acceptable Methods of Service? [California Civil Code § 8106](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8106.) specifies the acceptable methods of serving a preliminary notice: - **Certified mail** (return receipt requested is recommended but not required by statute) - **Registered mail** - **First-class mail with a certificate of mailing** (postmarked by USPS) - **Personal delivery** Do not rely on email, fax, or hand-delivery without documentation. Certified mail is the industry standard for a reason: it generates a USPS tracking number and delivery confirmation that creates a verifiable record if your lien rights are ever challenged in court. For certified mail, USPS currently charges $4.85 as the base certified mail service fee in 2026, per USPS Notice 123. Adding electronic return receipt adds $2.46. That is under $8 per recipient for ironclad proof of delivery. Given the dollar amounts typically at stake on a subcontract, this is one of the lowest-cost insurance purchases in the trades. Keep the Certificate of Mailing and the tracking confirmation. If you ever need to enforce a mechanics lien, that documentation is what proves timely service. ## What Information Must the Notice Include? Under [Cal. Civ. Code § 8102](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8102.), a valid California preliminary notice must contain the following: - A description of the site sufficient for identification (the property address or legal description) - The name and address of the owner or reputed owner - The name and address of the direct contractor - The name and address of the construction lender, if known - A description of the labor, service, equipment, or materials you are furnishing or have agreed to furnish - An estimate of the total price of the labor, services, equipment, and materials - The name, address, and relationship to the project of the claimant (that's you) - The following statutory warning statement, which [Cal. Civ. Code § 8202](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8202.) requires verbatim: > *"NOTICE TO PROPERTY OWNER: If bills are not paid in full for the labor, services, equipment, or materials furnished or to be furnished, a mechanic's lien leading to the loss of your property may be filed against your property if you do not pay the person named in this notice or take other steps to protect yourself. You have the right to demand a release of lien before you make payment. Contact an attorney, a title insurance company, or other person familiar with the lien laws if you do not understand this notice."* Missing or incomplete notice elements can invalidate the preliminary notice entirely. Using a state-compliant, attorney-reviewed template eliminates this risk. [California preliminary notice resources](/resources/california-20-day-preliminary-notice) ## What Happens If You Miss the Deadline? Missing the 20-day deadline does not void your lien rights entirely, but it severely restricts them. As explained under [Cal. Civ. Code § 8204](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8204.), a late preliminary notice protects only labor and materials furnished in the 20-day period before service and everything after — all prior work is unprotected. Beyond losing lien rights, failing to serve the preliminary notice also eliminates your right to serve a stop payment notice on the construction lender under [Cal. Civ. Code § 8500](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8500.). That is a separate remedy that can be particularly valuable when a project is in financial distress or the owner is stalling. This matters more than most subs realize. According to Rabbet's 2024 Construction Payments Report, 82% of contractors face payment waits of over 30 days, up from 49% just two years earlier. The preliminary notice is your legal leverage when a payment stall turns into a non-payment. Without it, you have no lien, no stop payment notice, and no practical pressure tool beyond threatening litigation. A single LienFlash preliminary notice costs $24.99. If it preserves your lien rights on a $15,000 subcontract that would otherwise go unpaid, that is a return exceeding 60,000% on the cost of filing. [lien deadline calculator](/tools/lien-deadline-calculator) ## Are There Different Rules for Public Works Projects in California? Yes. Mechanics liens do not apply to public property — the government cannot have a lien placed against it. On California public works projects, your payment remedy is a stop payment notice against the public entity and a claim against the payment bond required under [Cal. Civ. Code § 9550](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=9550.) et seq. (for projects over $25,000). For public works, a claimant who has not contracted directly with the prime contractor must serve a preliminary notice within 20 days of first furnishing labor or materials, per [Cal. Civ. Code § 9300](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=9300.). The notice must be served on the public entity and the prime contractor. The rules are similar in structure to private works but the enforcement mechanism — bond claim rather than lien — is different. If you primarily work on public jobs, confirm with a construction attorney which notices apply to your specific project type. ## How Do You Track Deadlines Across Multiple California Jobs? Manual tracking fails. The 20-day window is tight, and if you're running multiple active jobs — which most subs are — missing one notice because it slipped through a spreadsheet is a real and costly risk. According to Rabbet's 2024 Construction Payments Report, slow payments cost the U.S. construction industry an estimated $280 billion in 2024, adding roughly 14% to total construction spending. Protecting your receivables on every job requires a systematic process, not memory. The practical answer is a filing system that triggers automatically when a new job starts. That means either a dedicated job-start checklist reviewed on day one or two of every project, or a software tool that calculates your deadline from the first-furnishing date and files the notice for you. [California lien deadline reference](/deadlines/california) At minimum, your job-start protocol should include: - Record the exact date of first furnishing in writing (text to yourself, job log, or project management software) - Pull the owner name, address, GC name and address, and lender information from the county recorder - Send the preliminary notice within 48 hours of first furnishing — not at the end of the week, not when you get around to it --- ## Frequently Asked Questions ### Does a California GC need to serve a 20-day preliminary notice? No. Under [Cal. Civ. Code § 8200](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8200.), direct contractors who have a written contract directly with the property owner are exempt from the 20-day preliminary notice requirement. However, every subcontractor and supplier who does not have a direct contract with the owner must serve the notice to preserve mechanics lien rights. ### What if I serve the notice late — do I lose all my lien rights? Not entirely. Under [Cal. Civ. Code § 8204](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8204.), a late preliminary notice still protects labor and materials furnished in the 20 days before service and any work performed after service. All work performed before that 20-day lookback window is unprotected. Serving late is better than not serving at all, but you should still serve as close to day one of furnishing as possible. ### Can I use email to serve a California preliminary notice? No. [Cal. Civ. Code § 8106](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8106.) specifies the valid methods of service: certified mail, registered mail, first-class mail with certificate of mailing, or personal delivery. Email is not a recognized method of service for California preliminary notices and would not satisfy the statute. ### Do I need to serve the preliminary notice on every project, even small ones? Yes. California law does not exempt preliminary notice requirements based on project size or contract value. There is no minimum threshold. A $5,000 scope carries the same notice requirement as a $500,000 scope. ### What is the difference between a preliminary notice and a mechanics lien in California? The preliminary notice is served at the start of a project — ideally within 20 days of first furnishing — and preserves your right to file a mechanics lien later if you are not paid. The mechanics lien itself is recorded with the county recorder after non-payment occurs, typically within 90 days of the completion of the work or project. The preliminary notice is a prerequisite for the lien; you cannot record a valid mechanics lien in California on private works without having first served a proper preliminary notice. ### How long does a California mechanics lien remain valid after recording? A California mechanics lien is valid for 90 days after recording. If you do not file a lawsuit to enforce the lien within that 90-day window, the lien expires and becomes unenforceable, under [Cal. Civ. Code § 8460](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV§ionNum=8460.). You must act within that period or your lien is worthless. ### Do I need to serve a new preliminary notice for each phase of a project? Generally, one preliminary notice covers your entire scope on a project as long as the work is continuous and under the same contract. If you are brought back for a separate, later contract on the same project — treated as a new and distinct engagement — a new notice may be required. When in doubt, serve a new notice. The cost is minimal; the risk of not serving one is substantial. ### Can a property owner waive the preliminary notice requirement by contract? No. A property owner cannot contractually waive the statutory preliminary notice requirement on behalf of a subcontractor, nor can a GC waive it in a subcontract agreement. The notice requirement exists to protect the owner's right to know who has furnished labor and materials to their property. Any contract provision purporting to waive the requirement would not override the statute. --- ## Protect Your Lien Rights Today The 20-day clock starts the moment you put boots on the job or drop materials at the gate. Waiting until you have a payment problem to think about your preliminary notice is already too late. Set up a process that fires the notice within 48 hours of first furnishing on every California job, every time. LienFlash generates a state-compliant, attorney-reviewed California preliminary notice, sends it via USPS Certified Mail, and delivers a Certificate of Mailing PDF to your account — in about 2 minutes, for $24.99 per notice. No forms to hunt down, no trips to the post office, no spreadsheet to forget. Use the free deadline calculator to confirm your filing window, then file directly from the same screen. [lien deadline calculator](/tools/lien-deadline-calculator) --- Source: https://lienflash.app/blog/pre-lien-notice-california Author: Grant Larsen, President, LienFlash Publisher: LienFlash (https://lienflash.app)