California Preliminary Notice Service
Two-minute filing. We research the owner, mail everyone Certified, and send you court-ready proof. $49 — first one free.
How the service works
From address to court-ready proof — checked twice before anything mails.
- 1
Enter the job-site address
We pre-fill the owner, GC, and construction lender from county property records and state license data.
- 2
We check everything twice
A real person cross-checks the parties against county records and verifies every address against USPS data — then you confirm.
- 3
Mailed by Certified Mail
Every recipient is served by USPS Certified Mail — we aim to mail within one business day.
- 4
Court-ready proof
The served notice, live tracking, and a signed Proof of Service land in your dashboard.
Pricing
Unlimited filings for a flat fee, or pay as you go.
Your first preliminary notice is on us — no credit card required.
Unlimited
Billed annually
Unlimited preliminary notices, mechanics liens, stop notices, and bond claims — plus lien waivers and notice of completion monitoring.
Pay-As-You-Go
- Preliminary notice$49
- Lien recording$199
- Stop notice$199
- Bond claim$199
No subscription required.
What California contractors say
Filing prelims used to kill half my day. This system pulls the data automatically and I get my prelims done in under five minutes now.
CMCarlos M.Roofing contractor · Oakland, CAI don't have an admin team. This handles the compliance paperwork so I can stay on the job site. Worth every penny.
DWDavid W.HVAC contractor · San Diego, CAThe support team is phenomenal. When I had a question on a complex project, a real person walked me through it in minutes. They actually understand the trades.
RHRobert H.Plumbing contractor · Anaheim, CASent an intent to lien letter from my truck on Thursday and had a check by Tuesday. We didn't even need to record the actual lien.
JTJim T.Landscaping · Santa Rosa, CAJuggling 5 active jobs used to mean drowning in paperwork. Notice Harbor lets us track and process our notices in one dashboard.
JLJessica L.Electrical contractor · San Francisco, CADeadline tracking is a lifesaver. The platform alerted me when a Notice of Completion was recorded so I didn't miss my lien window.
SKSarah K.Commercial painting · Stockton, CA
Frequently asked questions
Related guides
Protect your next California job
We research the parties, mail your preliminary notice by Certified Mail, and track every deadline. Your first notice is free.
Start your free noticeThis 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.