What Is an NTO in Construction? Notice to Owner

In Florida construction, a Notice to Owner (NTO) is a formal document that a subcontractor, material supplier, or other party without a direct contract with the property owner sends to that owner during a project. It tells the owner that someone working on their property expects to be paid, and under Florida’s construction lien law, sending it on time is the required first step before that party can file a lien against the property if payment never arrives.¹

The Problem the NTO Solves

Construction projects stack contracts on top of each other. An owner hires a general contractor. The general contractor hires subcontractors. Subcontractors hire their own suppliers and sub-subcontractors. The owner writes checks to the general contractor and trusts the money to flow down.

Sometimes it doesn’t. A general contractor can pocket a payment, run into cash-flow trouble, or go bankrupt. When that happens, the people who actually swung hammers or delivered concrete have no one to collect from except the property that benefited from their work.

The NTO closes that information gap. Without it, an owner may have no idea the electrician, roofer, or concrete supplier even exists on the job. Once a valid NTO arrives, the owner is legally on notice: if they keep paying the general contractor without confirming those downstream parties are getting paid too, they can end up paying for the same work twice. Once to the contractor, and again when the unpaid subcontractor records a lien and forces the issue.¹

Who Has to Send One

The rule is simple. If you don’t have a direct contract with the property owner, you have to send an NTO to preserve lien rights. That covers subcontractors, sub-subcontractors, and material suppliers. A sub-subcontractor or a supplier to a subcontractor must also send a copy of the notice to the general contractor.¹

Two groups don’t need to send one. General contractors who signed directly with the owner already have the relationship the NTO is meant to establish. Laborers are also exempt. Florida gives laborers lien rights automatically and puts them first in line when lien proceeds are distributed, and the owner is allowed to pay them directly and deduct those amounts from what’s owed to the general contractor.¹

Architects, engineers, and other design professionals follow the same logic. If they contracted directly with the owner, no NTO is needed. If the general contractor hired them, they have to serve one like anyone else without a direct owner contract.

The 45-Day Deadline

Florida sets a hard cutoff. The NTO must be served before you start work, or no later than 45 days after you first provide labor, services, or materials to the project. Missing that window is a complete defense against your lien claim. No grace period, no exception for good faith, no cure.¹

There’s a second cutoff that catches people. Even if you’re inside the 45 days, the notice must arrive before the owner makes final payment to the general contractor. Once that final check goes out, the NTO is too late no matter how early in the 45-day window you are. Early service is always safer. Waiting until day 44 is a gamble on a project that may finish faster than you expect.¹

The statute allows substantial compliance on most content requirements. A small error in a property description or an owner’s name probably won’t sink the claim if no one was harmed by the mistake. Timing is different. Courts require strict compliance with the 45-day deadline.¹

What Goes in the Notice

The lien statute provides a form the NTO must substantially follow. It needs the owner’s full legal name and mailing address, a property description detailed enough to actually identify the real property (typically the legal description with lot, block, and folio, not just a street address), a general description of the labor, services, or materials being furnished, and the name and address of the party you’re working under, which is usually the general contractor or a subcontractor.

It also has to carry the statutory warning: a bolded paragraph telling the owner that Florida law allows unpaid parties to file liens even if the owner has already paid the general contractor in full, and that the owner should obtain a written release with every payment.²

That warning is what tends to alarm homeowners who’ve never seen one. It’s blunt by design. The legislature wants the owner to understand the stakes before writing another check.

Where the Information Comes From

Most of what you need is in the Notice of Commencement, a separate document the owner records with the county clerk before construction begins. It lists the owner’s name and address, the legal description of the property, the general contractor’s details, and the construction lender’s information if there is one.³

The owner also has to post a copy at the job site. If it isn’t there, you can pull it from the county clerk’s records. County property tax records are a reliable cross-check for ownership and legal descriptions. Getting the owner’s name wrong is one of the more common mistakes, and a quick records search prevents it.

How to Serve It

Florida accepts three methods: hand delivery, certified or registered mail, or a common carrier with tracking. Certified mail with return receipt is by far the most common because it creates a clean paper trail.⁴

The statute offers a way to lock in your service date as the mailing date rather than the delivery date. To get that benefit, you have to mail the notice by certified or registered mail within 40 days of first furnishing labor or materials, and keep a mail log showing the certified tracking number, the recipient’s name and address, and a USPS date stamp confirming when you mailed it. Electronic tracking records from the Postal Service also qualify. With the log, service is effective the day you dropped the envelope in the mail, not the day it was delivered.⁴

That matters more than it sounds. Mail on day 43, delivery on day 48, and you’re fine under the 40-day rule as long as the log is in order. Without the log, you’d be stuck trying to prove the owner actually received it within 45 days. Keep the green return receipt and the mail log together in the project file. If the owner refuses delivery, hold onto the unopened envelope. Courts have consistently held that attempted delivery satisfies the sender’s obligation.

What an Owner Should Do After Receiving One

An NTO is not a lawsuit, not a lien, and not an accusation. It’s an early-warning document. The useful response is to treat it as information rather than a threat.

Start collecting lien waivers. Before making any payment to the general contractor, ask for a partial release from every subcontractor and supplier who sent an NTO. A conditional waiver, which becomes effective once the check clears, is standard for progress payments. For the final payment, get a final and unconditional release from each party. If the contractor can’t or won’t produce those releases, that’s a signal to pause and look closer before writing another check.

Ignoring an NTO creates real exposure. If the general contractor fails to pay the party who sent it, that party can record a lien against the property and eventually foreclose, even if the owner has already paid the general contractor every dollar owed under the contract. The NTO exists so the owner has enough warning to prevent that outcome. Owners who track NTOs and demand lien waivers at every payment rarely end up with lien problems.¹

What Comes After the NTO

The NTO is only the first step. If a payment dispute actually develops, the claimant still has to meet further deadlines to turn the notice into an enforceable lien.

After the last day of furnishing labor, services, or materials to the project, the claimant has 90 days to record a claim of lien with the county clerk. That recorded claim is the document that actually encumbers the property. Once recorded, the claimant has one year to file a lawsuit to enforce it. No lawsuit within that year, and the lien expires on its own.⁵

Where NTOs Don’t Apply

NTOs and construction liens are a private-property mechanism. You can’t lien a government building or a public road. Federal construction projects run under the Miller Act, which requires prime contractors on federal jobs over $100,000 to post a payment bond that stands in for lien rights, with its own notice rules and deadlines.⁶ State and local public projects follow similar “Little Miller Act” statutes that vary by jurisdiction.

The “Notice to Owner” label is Florida-specific, but nearly every state has some version of a preliminary notice requirement for private construction. Arizona uses a Preliminary Twenty Day Notice, California and others use a Preliminary Notice, Alaska and New Hampshire call it a Notice of Right to Lien, and South Carolina uses a Notice of Furnishing Labor and Materials. The deadlines, required content, and service methods differ from one state to the next, so anyone working across state lines should check each project’s local rules rather than assume Florida’s apply.

1
Justia Law. Florida Code 713.06 – Liens of Persons Not in Privity; Proper Payments
2
Florida Senate. Florida Code 713.06 – Liens of Persons Not in Privity; Proper Payments
3
Florida Senate. Florida Code 713.13 – Notice of Commencement
4
Online Sunshine. Florida Code 713.18 – Manner of Serving Notices and Other Instruments
5
Justia Law. Florida Code 713.22 – Duration of Lien
6
Office of the Law Revision Counsel. 40 USC 3133 – Rights of Persons Furnishing Labor or Material