A California preliminary notice is a written document that most subcontractors, suppliers, equipment lessors, and design professionals must send within 20 days of first furnishing labor or materials to a private construction project in order to preserve their right to record a mechanics lien, serve a stop payment notice, or make a payment bond claim. Civil Code 8200 requires it from nearly everyone who contributes to a project without a direct contract with the property owner.1California Legislative Information. California Civil Code 8200 – Preliminary Notice The notice itself doesn’t accuse anyone of nonpayment. It simply puts the owner, general contractor, and lender on record that your company has a financial stake in the job.
Who Has to Send One
Civil Code 8200 applies to any “claimant” who wants to keep lien, stop payment, or bond claim rights alive. In practice, that means subcontractors, material suppliers, equipment lessors, and design professionals who don’t contract directly with the owner.1California Legislative Information. California Civil Code 8200 – Preliminary Notice Second-tier and lower-tier subcontractors are the most exposed, because their involvement is invisible to the owner without this notice.
Two groups sit in unusual positions. Laborers are flatly exempt under Section 8200(e)(1) and don’t have to send a notice at all. And a general contractor working directly with the owner is not fully off the hook: under Section 8200(e)(2), a direct contractor must still send the notice to the construction lender if one exists.1California Legislative Information. California Civil Code 8200 – Preliminary Notice No lender, no obligation for the direct contractor. But when a lender is involved, skipping that step quietly undermines any later claim against the construction loan fund.
Who the Notice Goes To
Section 8200(a) lists three required recipients:
- The property owner, or reputed owner, of the property being improved.
- The direct contractor, or reputed direct contractor, to whom the claimant provides work, whether directly or through other subcontractors.
- The construction lender, or reputed construction lender, if one exists.
Send to all three whenever they’re identifiable. The statute uses the word “reputed” for a reason: you don’t need absolute certainty, and sending based on your best information is safer than omitting a recipient. If you can’t identify the lender, or there isn’t one, say so on the face of the notice rather than leaving the field blank.1California Legislative Information. California Civil Code 8200 – Preliminary Notice
The 20-Day Deadline
Civil Code 8204(a) gives you 20 days from the date you first furnish labor, materials, equipment, or services to send the notice, and courts enforce that window strictly.2California Public Law. California Civil Code 8204 “First furnishing” means the first day you actually deliver materials, perform work, or provide services. It is not the day you signed the contract, submitted a bid, or watched the general contractor break ground.
A late notice is not worthless, but it is partial. It covers only work performed within the 20 days before you serve it, plus everything going forward.2California Public Law. California Civil Code 8204 A subcontractor who starts on January 1 and serves on February 10 has protected coverage only from January 21 onward. Forty-one days of earlier work sit outside any lien, stop payment, or bond claim rights.
Design professionals have a slightly different clock. Architects and engineers often furnish services long before construction starts, and their 20 days run from the date they first furnish those design services, not from when construction begins.2California Public Law. California Civil Code 8204
What the Notice Must Contain
Civil Code 8102 sets out the required contents. Each field matters, and a notice missing key information can be challenged.
- The name and address of the person giving the notice, with a description of the labor, materials, or equipment being furnished.
- The name and address of the direct contractor, or whoever holds the direct contract with the owner.
- The name and address of the owner or reputed owner.
- The name and address of the construction lender, if one exists. If unknown, say so on the notice.
- A job description specific enough to identify your scope. “Construction services” is too vague; “electrical rough-in and panel installation” is clearer.
- An estimated total price for what you expect to furnish.
The notice must also carry the statutorily required statement to the owner explaining that the notice is not a claim of nonpayment and does not mean a lien will be filed.3California Legislative Information. California Civil Code 8102 That language is there to protect you while reassuring the owner.
How to Deliver It
Civil Code 8110 recognizes three acceptable mailing methods: registered mail, certified mail, or express delivery through an express service carrier such as FedEx or UPS overnight.4California Legislative Information. California Civil Code 8110 Regular first-class mail with no tracking does not qualify. Personal hand delivery is also permitted, but proving service becomes awkward if the recipient won’t sign for it, which is why most experienced contractors stay with certified or registered mail.
Timing of service works in your favor. Under Civil Code 8116, a mailed notice is deemed complete when you deposit it in the mail, not when the recipient opens or signs for it.5California Legislative Information. California Civil Code 8116 An owner who refuses certified mail cannot defeat your notice by leaving it at the post office. Save the postal receipts, tracking confirmations, and any signed return cards. If timeliness is ever questioned, those records are the evidence.
What You Lose If You Skip It
The penalty for failing to send the preliminary notice is blunt. Without a valid notice, you cannot record a mechanics lien, issue a stop payment notice, or assert a payment bond claim.6California Legislative Information. California Civil Code 8214 All three of those remedies disappear together.
That leaves a breach-of-contract claim against whoever hired you, which is weaker in every meaningful way. A mechanics lien attaches to the property itself, creating a secured interest that follows the real estate through sales and refinancing. A stop payment notice can freeze construction loan funds before they’re disbursed, often producing payment faster than a lien action. A bond claim reaches the surety when the general contractor can’t pay. A contract claim does none of that; it is unsecured, and if the party owing you money files bankruptcy, you stand in line with the general creditors.
Errors in the notice itself can create the same exposure. California courts have sometimes forgiven minor defects that didn’t prejudice a recipient, but relying on that leniency is a gamble. Treat every field as mandatory and verify recipient addresses before mailing.
Common Timing Mistakes
The 20-day deadline trips up contractors in predictable ways. The most common error is starting the clock from the wrong date. First furnishing is the day you first deliver materials, perform labor, or provide services. If you dropped off framing lumber on March 3, your 20 days run from March 3, even if the general contractor didn’t frame a wall until March 15.
The second common error is treating a long project as one notice event. If your scope expands substantially, or you’re brought back under a separate purchase order months later for a new phase, that new work can require its own notice with its own 20-day clock. A notice sent at the start of Phase 1 does not automatically cover Phase 3 work that begins six months later. On large multi-building developments, treat each distinct contract or phase as its own project for notice purposes.
Third-party notice services will research, prepare, and mail notices for a fee of roughly $15 to $60 each. For a company running many projects at once, that is cheap compared with the cost of a single missed deadline.
Public Projects Are Different
Civil Code 8200 and the rules above govern private construction. Public works are handled under a separate scheme. You cannot record a mechanics lien against publicly owned property, but public projects have their own preliminary notice requirements for stop payment notices and bond claims under Civil Code 9300, with different deadlines and recipients. If you work both sides, treat private and public jobs as two separate compliance tracks rather than assuming public work has no notice obligations.