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The 45 days for the Notice to Owner run from your first day on the job, not from when you were not paid. Enter your dates and every deadline in chapter 713 is counted, with the section it comes from.
The day work or deliveries actually started for you. This is what the Notice to Owner runs from, and it is why the notice is served at the beginning of a job rather than when a payment goes bad.
Your last real day of work or last delivery. Punch list, warranty and corrective work generally do not restart this.
Starts the year you have to bring the action to enforce it.
An owner can record one to force your hand. It cuts the year down hard.
Enter your first day on the job
Every Florida deadline is counted from the dates you enter, and nothing is counted until they are. The worked example under the calculator is the same arithmetic on an ordinary job.
The two that catch people
The Notice to Owner is a beginning-of-job document, not an end-of-job one. Serve it in the first 45 days of every project as a matter of routine, before you know whether you will need it, because by the time you know it is too late to serve.
And a recorded Notice of Contest of Lien is the owner shortening your year to sixty days. It arrives quietly, and the sixty days run from recording, not from the day you read it.
Worked example
First supply Jul 7, 2026, last supply Aug 16, 2026, working under the general contractor on a private job.
Aug 21, 2026
Without it you have no lien on this job at all, no matter what you are owed or how well you did the work.
Counted as 45 days from your first day supplying labour or materials (2026-07-07).
Fla. Stat. s.713.06(2)(a)
Nov 14, 2026
After this day the lien cannot be recorded. The right is gone for good.
Counted as 90 days from your final furnishing of labour or materials (2026-08-16).
Fla. Stat. s.713.08(5)
Set a job up once and these dates are already on it. Day 45 and day 90 count themselves, turn amber inside a week and red once they have gone, so the notice that secures a project gets served because it was on a screen, not because somebody remembered.
Built deepest for Ontario and running across Canada, the United Kingdom, Florida, Texas and California, each on its own statute rather than one set of dates renamed.
notice_to_owner_days (US-FL) Published source Last read from the source Aug 12, 2026.claim_of_lien_days (US-FL) Published source Last read from the source Aug 12, 2026.lien_foreclosure_months (US-FL) Published source Last read from the source Aug 12, 2026.notice_of_contest_response_days (US-FL) Published source Last read from the source Aug 12, 2026.Florida payment bond claim calculator
On a bonded job the notices are the claim. Includes the floor on the notice of nonpayment, the one deadline you can be too early for.
Markup and margin calculator
The arithmetic solo contractors lose money on. 20% markup is not a 20% margin, and this shows you the gap in dollars.
Contractor hourly rate calculator
What you have to charge, worked backwards from the year you want. Counts the hours you work against the hours you actually invoice.
Ontario lien deadline calculator
Preservation, perfection and the annual holdback cycle, counted with the periods in the Construction Act.