Why it matters
Civil Code 8200 gives most subcontractors and suppliers 20 days from first furnishing labor or materials to serve a preliminary notice on a private works job — miss it and your lien rights run from the date you actually serve, not the date you started work, cutting real recovery off the front of the project. The mechanics lien deadline that follows is a separate, later clock (90 days after completion, or 60/30 days if the owner records a Notice of Completion or Notice of Cessation), and a missed lien deadline is not curable. Firms tracking this across a live project list in spreadsheets and calendar reminders lose days to holidays, project-manager turnover, and jobs that never make it onto the tracker at all.
How we do the work
Intake and project mapping
You supply the project list — owner, general contractor, APN, contract, and first-furnish date. We confirm notice type for each job (private works under Civ. Code 8200 vs. the public works notice series) before anything is drafted.
Preliminary notice preparation and service
We prepare the statutory 20-day notice from your contract and scope data, calculate the window from first furnishing, and serve by certified mail (USPS Form 3800/3811) or registered process server, logging proof of service against the project file.
Lien and stop-notice deadline calendar
Each project gets its own clock: the 90-day mechanics lien deadline, the accelerated 60-day (direct contractor) or 30-day (subcontractor and supplier) deadline that follows a recorded Notice of Completion or Notice of Cessation, and applicable stop-notice windows, checked against county recorder filings.
Prompt-payment monitoring
We calendar the statutes that run alongside lien rights — retention release deadlines under the Civ. Code 8800 series and progress-payment penalty windows under Bus. & Prof. Code 7108.5 — so late-payment exposure is flagged before it becomes a dispute.
Escalation to counsel
When a deadline is at risk or a dispute over lien rights or notice validity surfaces, we flag it immediately and hand the full notice and service file to your construction counsel. We do not advise on how to respond.
What you receive
- Served preliminary notice packet for each project — statutory Civ. Code 8200 notice, proof of service, and certified mail (USPS Form 3800/3811) or registered process-server receipt
- Project-by-project deadline calendar covering the 20-day preliminary notice, the 90-day mechanics lien deadline, the accelerated 60-day (direct contractor) / 30-day (subcontractor and supplier) deadline, and stop-notice windows
- Monthly monitoring report flagging notices coming due and any Notice of Completion or Notice of Cessation recorded against a tracked project
- Prompt-payment calendar tracking retention release deadlines (Civ. Code 8800 series) and progress-payment penalty windows (Bus. & Prof. Code 7108.5)
- Complete document file — every notice served, proof of service, and recorder search — packaged and ready to hand to counsel if a claim is filed
Priced per notice prepared and served, plus a flat monthly retainer for deadline monitoring across your active project list. Configure this service and see your estimate in the engagement builder.
Questions contractors ask
Do you tell us whether we have lien rights, or how strong our claim is?
No. We prepare notices and track statutory deadlines from the project data you supply. That is ministerial work, not legal advice. Any question about lien rights, notice validity, or claim strategy goes to your construction counsel.
What is the difference between the 20-day notice and the lien deadline itself?
The preliminary notice under Civil Code 8200 is served within 20 days of first furnishing labor, materials, or equipment, and it preserves your right to later record a lien or serve a stop notice. Recording the lien is a separate, later filing: generally due within 90 days of completion of the work of improvement, or accelerated to 60 days (direct contractors) or 30 days (subcontractors and suppliers) if the owner records a Notice of Completion or Notice of Cessation. We track both clocks from day one.
What do you need from us to start tracking a project?
Project name and address, the owner and general contractor of record, your contract or purchase order, and the date you first furnished labor, materials, or equipment on site. That data sets the 20-day notice window and every deadline that follows it.
Aeternus Dynamics uses AI-assisted tools to help prepare and check compliance documents; all deliverables are reviewed by a qualified human before submission or use. Aeternus Dynamics is not a law firm and does not provide legal advice. See our Terms & Disclosures.