Florida Construction Lien Timeline Calculator

How this calculator works

Florida construction lien law (F.S. Chapter 713) governs the procedural rights of every person who furnishes labor, services, or materials for the improvement of real property. The statute creates a powerful remedy — a lien on the owner's real property — and an equally powerful procedural trapdoor: three hard statutory clocks that run on the lienor and create real exposure for the owner. This calculator walks all three clocks, tests the owner's safe-harbor against double payment, and tells the user where the file stands and what the next step should be.

The calculator does not decide the underlying merits of any payment dispute. It tells the user three things: where each of the three statutory clocks stands today, whether the lien is enforceable on its face, and what the owner's exposure looks like given which procedural safeguards are in place. Operators reading the output can walk straight from the verdict into the next procedural action — paying direct, escrowing the balance, demanding a release, or transferring the lien to a surety bond.

The three-clock framework

Every Florida construction-lien analysis begins with three statutory clocks. They are independent, they run hard, and missing any one of them is materially fatal to the lien rights of someone in the chain.

Clock one: the 45-day Notice to Owner window (F.S. § 713.06). Every subcontractor, sub-subcontractor, and materialman not in direct privity with the owner must serve a written Notice to Owner on the owner within 45 days of first furnishing labor or materials. Service runs by certified mail with return receipt or any other method authorized in § 713.18. The NTO is the lienor's procedural ticket — it tells the owner who is on the job and that the named sub or supplier will have lien rights if not paid. Missing the 45-day window forfeits lien rights for any work performed more than 45 days before late service.

Clock two: the 90-day claim-of-lien window (F.S. § 713.08). Once a lienor's work is complete (the "final furnishing" date), the lienor has 90 days to record a verified claim of lien in the county Official Records. A claim of lien recorded after day 90 is defective on its face and unenforceable. Florida courts have repeatedly invalidated liens where lienors tried to extend the window by returning for warranty work, punchlist returns, or trivial touch-ups — only materially contracted work counts toward the final-furnishing date.

Clock three: the 1-year foreclosure window (F.S. § 713.22). Once the claim of lien is recorded, the lienor has one year to file a foreclosure action in the circuit court for the county where the property sits. If no foreclosure complaint is filed within 365 days of recording, the lien expires by operation of law. The § 713.22(2) 60-day show-cause notice — served by any interested party (owner, mortgagee, contractor) — compresses this to 60 days from service, putting the lienor to an immediate choice between filing suit and losing the lien.

A worked example. A roofing subcontractor first furnishes materials to a residential project on June 1. The sub's last day of substantive work (the final furnishing date) is June 30. The procedural picture under all three clocks:

• NTO deadline: July 16 (45 days after June 1). The sub serves the NTO on June 10 — well within the window. Lien rights are preserved.
• Claim of lien deadline: September 28 (90 days after June 30). The sub records the claim of lien on September 15 — inside the window. The lien is perfected.
• Foreclosure deadline: September 15 of the following year (365 days after the September 15 recording). The sub has one year from recording to either reach a settlement or file suit. If the year runs without a foreclosure action, the lien expires.

That timeline is the spine of every Florida construction-lien analysis. Get any of the three clocks wrong and the lien fails.

The owner's safe-harbor against double payment

Florida construction lien law creates a genuine danger for owners: a subcontractor or supplier can record a lien on the owner's property for unpaid labor or materials even if the owner already paid the general contractor in full for that exact work. Without procedural protection in place, the owner can end up paying twice — once to the GC (who pocketed the money) and again to the sub (who has a perfected lien on the property and a circuit-court foreclosure remedy).

F.S. § 713.06(3)(d) provides the safe-harbor. The owner is protected from having to pay any sub or supplier twice if three statutory pieces are assembled.

Piece one: the Notice of Commencement (F.S. § 713.13). The owner records the NOC in the county Official Records AND posts a certified copy at the job site BEFORE commencing work for any improvement exceeding $2,500. The NOC establishes the project's record date, identifies the owner and contractor, and gives every potential lienor a single statutory address for serving Notices to Owner. Without the NOC, the owner has no consolidated record of NTOs served and the safe-harbor is materially weakened.

Piece two: the contractor's final affidavit (F.S. § 713.06(3)(d)). At the time of final payment — and as a statutory precondition for the contractor to enforce its own lien — the contractor delivers a sworn affidavit to the owner listing every potential lienor on the project and the paid status of each. The affidavit is the owner's roadmap for the rest of the safe-harbor: it tells the owner who else on the job could record a lien.

Piece three: lien waivers from every potential lienor (F.S. § 713.20). Partial waivers for each progress payment, final waivers at completion, from every potential lienor identified on the contractor's final affidavit. Florida's statutory waiver forms are in § 713.20; many title companies and disbursement agents have their own equivalents.

With all three pieces in hand, the owner pays the balance to the contractor and is protected against double payment as a matter of statute. With one piece missing, the safe-harbor is partial — pay through a construction-disbursement escrow that holds the final payment pending receipt of the missing piece. With multiple pieces missing, withhold the final payment until the affidavit and waivers are in hand. The escrow or withholding cost is trivial compared to a worst-case double-pay exposure.

What to do when a defective lien shows up

If the lienor missed the 45-day NTO window, missed the 90-day claim-of-lien window, or missed the 1-year foreclosure deadline, the lien is defective and the owner has procedural leverage. Two tools are commonly used.

F.S. § 713.21(4) — the 20-day show-cause demand. The owner serves a written demand on the lienor requiring the lienor to file a foreclosure action within 20 days. If the lienor does not file within 20 days, the lien is automatically discharged and the owner can record a unilateral release. This is the fastest procedural tool for clearing a defective or unprosecuted lien. Most lienors with weak claims will not file — they recorded the lien hoping for a settlement and will fold when forced to choose.

F.S. § 713.24 — transfer of lien to surety bond. The owner (or contractor, or any interested party) posts a surety bond of 110% of the lien amount up to $5,000, plus the lien amount over $5,000, plus interest at the legal rate for three years, plus reasonable attorney fees. Once the bond is recorded, the lien is automatically transferred from the property to the bond — the owner can sell, refinance, or close clean title while the underlying dispute continues against the surety. Premiums run roughly 1 to 3 percent of the bond amount per year depending on credit. This is the standard tool when the owner needs to close a transaction immediately and cannot wait out a § 713.21(4) demand.

If the lien was overstated or included items the lienor knew were not lienable, F.S. § 713.31 supports a fraudulent-lien counterclaim with damages, punitive damages, and recoverable attorney fees. Counsel routinely pleads § 713.31 as a counterclaim when defending an exaggerated lien — the deterrent effect on overstated claims is substantial.

Verdict precedence

When multiple issues fire at once, the calculator reports them in this order: enforceability verdict (always present), NTO status on the 45-day clock, claim-of-lien status on the 90-day clock, foreclosure status on the 1-year clock, NOC status, owner double-pay-risk verdict, and the recommended next step. An expired lien overrides everything else — once the § 713.22 1-year window has run, the lien is unenforceable as a matter of law and no further procedural maneuvering is warranted. A defective lien (NTO missed or 90-day window missed) is the second-strongest owner posture; the recommendation is a § 713.21(4) show-cause demand.

What this calculator does not do

This calculator is a procedural screening tool. It does not:

• Verify the underlying facts. The stated first-furnishing date, final-furnishing date, NTO service date, and claim-of-lien recording date are taken at face value. The single most common construction-lien dispute is over the actual final-furnishing date — what counts as substantive work and what counts as warranty / punchlist / trivial touch-up. Courts decide that question case by case, not on the face of a calculator.
• Compute the dollar lien amount. The lien amount enforceable under § 713.06 is capped at the unpaid portion of the contract for the lienor's work, as long as the owner has paid in proportion under § 713.06(1). The calculator does not attempt to model that arithmetic — counsel reviewing the contract, the change orders, and the payment ledger does that work.
• Read the contract or the declaration. Construction contracts routinely include flow-down indemnity, lien-waiver covenants, prevailing-party attorney-fee provisions, and dispute-resolution clauses that materially affect the strategic posture. The calculator screens the statutory framework; counsel reads the contract.
• Replace a Florida construction-lien attorney for contested cases. Litigation over construction liens involves procedural rules (verified-complaint requirements, lis pendens, lien-priority disputes with mortgagees, § 713.24 bond proceedings) beyond this calculator's scope.

How this page is maintained

F.S. Chapter 713's three core clocks — the 45-day NTO window under § 713.06, the 90-day claim-of-lien window under § 713.08, and the 1-year foreclosure window under § 713.22 — have been stable for decades. The 2024 and 2025 legislative sessions did not modify any of the three clocks or the § 713.06(3)(d) safe-harbor structure. The $2,500 NOC threshold under § 713.13 has likewise been unchanged.

We monitor each Florida legislative session and re-stamp this page within the quarter after any substantive change. Recent statutory changes to construction-lien law have been narrow (procedural service-of-process clarifications, electronic-recording confirmations) and have not affected the calculator's core math.

Last reviewed: 2026-05-15 against F.S. § 713.001, § 713.06, § 713.08, § 713.13, § 713.22, § 713.21, § 713.24, and § 713.31.