Florida Subcontractor Notice To Owner Explained: What Every GC Needs to Know

A tile subcontractor on a Fort Lauderdale hotel remodel served a Notice to Owner on day 47. The owner paid the general contractor in full. Three months later the sub recorded a lien anyway. The court voided it, but the GC still spent $42,000 in legal fees proving the NTO was late. The Florida subcontractor Notice to Owner is the single document that determines whether every downstream lien claim survives or dies. This guide breaks down the 45-day statutory window, who must be served, what the form must contain, how Florida Statute §713.06 frames GC liability, and the workflow commercial GCs use to audit NTO compliance across every active project.

Key Takeaways

• Florida Statute §713.06 requires subs not in privity with the owner to serve a Notice to Owner within 45 days of first furnishing labor or materials.
• An NTO served on day 46 is void, and that sub loses all lien rights on the project.
• 38% of small subs fail to serve preliminary notices on time, according to the SubcontractorAudit 2026 GC Compliance Report.
• GCs must also ensure the owner has recorded a valid Notice of Commencement before work begins, per FL Stat §713.13.
• The NTO must be delivered by certified mail, personal service, or another method listed in §713.18.
• Florida gives lienors 90 days from last furnishing to record a Claim of Lien and one year to foreclose.
• Paying a sub without a signed lien waiver that covers through the NTO period can trigger duplicate liability under §713.06(3).
• A missed NTO log costs the average mid-market GC between $18,000 and $75,000 per project in avoidable lien defense and escrow holds.

What a Florida Notice to Owner Actually Is

A Notice to Owner is a statutory form a second-tier or third-tier subcontractor sends to the property owner to preserve the right to file a mechanics lien. It tells the owner a specific party is on the job, supplying labor or materials, and expects payment. Without the NTO, a non-privity lienor has no enforceable lien in Florida, regardless of how much is owed.

The statute is narrow on purpose. Florida wants owners to know exactly who they might owe before they release funds to the general contractor. That shifts the compliance burden to the GC, because a surprise lien after final payment can force a second payout.

Who Must Serve an NTO and Who Does Not

Anyone without a direct contract with the owner must serve the NTO. That includes subcontractors under the GC, sub-subcontractors, equipment suppliers, and material vendors. Laborers performing site work for wages are excepted.

The general contractor in privity with the owner is not required to serve an NTO, but the GC still carries responsibility for collecting NTOs from every tier below. If a second-tier supplier misses the 45-day window, the GC gains a defense against that lien. Conversely, if the GC loses track of a timely NTO, the GC may end up paying twice for the same scope.

The 45-Day Clock and How to Calculate It

Day one is the date the sub or supplier first furnishes labor or materials to the project site. Mobilization, delivery of stored materials, and punch-list fixes all have their own quirks. A delivery driver dropping off rebar on a Tuesday starts the clock that day, not when the rebar is installed.

Our lien deadline calculator maps every date against the statutory reference point. For specialty scopes that arrive late in the schedule, the clock runs independently from the overall project timeline.

What the NTO Form Must Contain

Florida law prescribes the statutory language verbatim. The notice must identify the lienor, the owner, the contractor, the property by legal description or street address, and the labor or materials being furnished. It must contain the warning paragraph set out in §713.06(2)(c) in bold, 10-point type at minimum.

GCs should reject any NTO that omits the warning language or uses a wrong property description. A defective NTO does not preserve lien rights, and accepting one without challenge can become a bad-faith argument later. For guidance on the underlying framework, see our preliminary notice guide.

How Service Works Under §713.18

Proper service is not email. The statute lists certified mail with return receipt, personal hand delivery, or service on the construction lender as acceptable methods. The burden of proof sits with the lienor, so GCs should demand a copy of the certified mail receipt or the signed delivery affidavit before logging the NTO as received.

Service failures are the most common defense in lien litigation. A sub who faxes or emails an NTO has no proof of statutory compliance. Review every NTO intake against §713.18 the same day it arrives.

GC Workflow: Auditing NTOs Across Every Project

Top GCs maintain a master NTO log per project that tracks three things. First, the expected NTO from every second-tier sub and supplier flagged in the subcontract file. Second, the date the NTO was actually received and whether it falls inside the 45-day window. Third, any NTO that appears without a matching subcontract, which flags an unknown lienor.

This log becomes the compliance backbone at pay application time. If a pay request from a GC's direct sub covers work by a second-tier party whose NTO has not landed, the GC has leverage to hold the funds. The preliminary notice tracker automates this intake and alerts the project team when a window is within five days of closing.

What Happens When the 45-Day Clock Is Missed

A late NTO strips the sub of lien rights. The sub keeps breach-of-contract remedies against the party they contracted with, but the property is cleared of that specific lien risk. For a GC, a missed NTO from a second-tier sub is actually a defense, though it carries a practical cost. The lienor often sues the GC for unjust enrichment anyway, and the GC spends legal fees dismissing the claim.

If the sub tries to record a lien despite a missed NTO, the GC can file a Notice of Contest of Lien under §713.21, which shortens the sub's time to file suit to 60 days.

Coordinating NTOs With Lien Waivers

Every NTO you log should have a corresponding lien waiver framework ready. For progress payments, collect conditional partial waivers through the pay period. On final payment, require unconditional final waivers that explicitly release any claim tied to the NTO. Mismatched through-dates between the NTO's date of first furnishing and the waiver's covered period is the most common source of lien surprises. See our mechanics lien glossary entry and notice to owner glossary for precise definitions.

FAQs

Does a Florida subcontractor in privity with the owner need to serve a Notice to Owner?

No. Under Florida Statute §713.06, only lienors not in privity with the owner must serve an NTO. A subcontractor who contracted directly with the property owner is in privity and preserves lien rights automatically by virtue of the contract, subject to the Notice of Commencement and the Claim of Lien deadlines. General contractors who hold the prime contract are always in privity. However, second-tier subs and suppliers below a GC are not in privity and must serve the NTO within 45 days of first furnishing.

What if the 45th day falls on a weekend or holiday?

Florida follows the computation rules in Florida Rule of Judicial Administration 2.514. If the last day of the 45-day period lands on a Saturday, Sunday, or legal holiday, the deadline rolls to the next business day. Do not rely on this as a buffer. Send every Florida subcontractor Notice to Owner on day 35 or earlier to leave room for mail delays, certified receipt issues, or a wrong address that forces a re-serve. The rule protects lienors who hit the cliff, not those who plan sloppily.

Can an electronic NTO satisfy Florida service requirements?

Not as primary service. Florida Statute §713.18 still requires certified mail, personal delivery, or one of the specified methods. Some lienors send a courtesy email in addition to the certified mail, which is fine for communication but does nothing for statutory compliance. As a GC, you should only log an NTO as received once you have either the certified mail green card, an affidavit of personal service, or the documented equivalent. An emailed NTO alone is not evidence of proper service and will not survive a lien contest.

How does a missed Notice of Commencement by the owner affect subs and the GC?

Under Florida Statute §713.13, the owner must record a Notice of Commencement before work begins on any project over $2,500. If the owner fails, the 45-day NTO window may be extended, and the owner loses the defense that they paid the GC in good faith. That is a direct risk to the GC, because the project becomes a magnet for late liens. Smart GCs verify the recorded NOC on day one of their construction schedule and archive a certified copy in the project compliance file.

Does the NTO need to match the exact legal description or is a street address enough?

The safer practice is both. Florida courts have accepted NTOs with only a street address when the parties were not confused about the property, but a lender or title insurer may reject that in a payoff scenario. Require every NTO you intake to list the full legal description from the recorded deed plus the common street address. If a lienor serves an NTO with a vague or wrong description, flag it immediately. A defective description is a strong defense later if the sub tries to foreclose.

Can a GC require subs to send an NTO even if the sub thinks they do not need to?

Yes, and many commercial GCs do exactly that as a contract term. The subcontract can mandate that the sub serve an NTO within 20 days of mobilization regardless of privity position. This gives the GC centralized tracking, removes ambiguity about first-furnishing dates, and creates a clean chain of compliance documentation. The cost to the sub is minimal. The benefit to the GC is a single source of truth at pay application and final payment time, which is what the general contractor preliminary notice workflow is built around.

Eliminate NTO Risk Across Every Florida Project

Mid-market GCs who automate NTO intake cut lien defense spend by 61% within two project cycles, according to the SubcontractorAudit 2026 GC Compliance Report. See how SubcontractorAudit automates lien waiver verification so every Florida NTO, waiver, and through-date reconciles before you cut a check.