Notice of intent to lien: when it's required, what to include, and deadlines

A notice of intent to lien is a written warning that you will record a mechanics lien against a property if an unpaid balance isn't resolved by a stated date. Some states make it a mandatory step, with its own recipients, delivery rules, and waiting period before the lien can be filed. Where no statute requires it, it is an optional demand letter. Either way, it only works if it goes out early enough that the pay-by date, and any statutory waiting period, both end before your lien filing deadline.

The state examples below were checked against the published statute text in September 2026. Confirm the current rule for your project's state before you rely on any of them.

What a notice of intent to lien is

A notice of intent to lien (also called an intent to lien letter, a notice of intent to file a lien, or an NOI) is a demand that names the project, the amount owed, and the consequence of nonpayment: a lien against the property. It is not the lien itself. The lien is a separate document that you record or file with the county recorder or clerk (or other local office the statute names), and it is what puts your claim on the public record. For how that document works, see what is a notice of lien?

The warning carries weight because a recorded lien is a claim against the owner's property. California's statutory "Notice of Mechanics Lien," which must be served on the owner with a copy of the lien claim, warns that the lien "may affect your ability to borrow against, refinance, or sell the property" until it is released (Cal. Civ. Code § 8416(a)(8)). A notice of intent puts that consequence in front of the people who control the money before you take the step.

Watch the labels, though. The same words don't mean the same thing everywhere:

• In Wisconsin, the statute calls it a "notice of intent to file a lien claim."
• In Missouri, the statute simply requires "ten days' notice" to the owner or agent before the lien is filed.
• In Connecticut, the "notice of intent" can be served any time after you start work, up to 90 days after you stop, so it works more like a preliminary notice than a final demand.
• In the District of Columbia, the "notice of intent" that a contractor, or a subcontractor or supplier it hired, records in the land records is the filing that preserves the lien, not a warning letter.

Notice of intent vs. preliminary notice vs. the lien

These documents get blurred together, so it's worth separating them.

• Preliminary notice is an early notice, usually sent near the start of your work, identifying you as a party who may later claim a lien. It preserves the right. It is not a demand for payment. See the preliminary notice deadline guide.
• Notice of intent to lien is usually a late-stage demand. By the time you send it, payment is overdue and you're warning that a lien is coming.
• The lien (called a notice of lien, claim of lien, or lien affidavit, depending on the state) is the filing recorded against the property when the demand goes unanswered.

In short: the preliminary notice preserves the right, the notice of intent warns that you're about to use it, and the lien exercises it.

When a notice of intent to lien is required

Whether you must send one depends on the state, and sometimes on your role and the type of project. Where a statute requires it, skipping it or sending it late can cost you the lien. Wisconsin, for example, says no lien claim may be filed unless the notice was served at least 30 days before, and Nevada says that on a residential project, a lien for materials or equipment (anything other than labor) can't be perfected or enforced unless the notice was given to the owner.

Here are examples we checked against the statute text:

If your state's lien statute doesn't call for a notice of intent, sending one is an optional collections step. It can still be worth doing: a dated demand that names the project, the amount, and the lien that follows gives the owner and contractor a last clear chance to pay. It doesn't replace any notice the statute does require.

Notice of intent to lien deadline: how the timeline works

Among these examples, statutes set the timing of a notice of intent in two ways, and each changes how you calendar it.

1. Counted back from the lien filing. Wisconsin (at least 30 days) and Missouri (at least 10 days) require the notice a set number of days before you file, and Nevada's residential "15-day notice of intent to lien" must be served before you record (the Nevada State Contractors Board says at least 15 days before). Your practical deadline for the notice is your lien deadline, minus any waiting period, minus whatever pay-by window you give the recipient. Nevada softens this: serving the notice extends the recording deadline by 15 days.
2. Counted forward from your work. Connecticut's notice is due no later than 90 days after you stop furnishing, the same 90-day window it gives for lodging the lien certificate itself.

Where a notice of intent is optional, the same logic applies: it only has leverage if the pay-by date falls before your lien deadline with time left to file.

The trap is sending the notice too late. If your pay-by date or the statutory waiting period ends after the lien deadline, the deadline passes before you can file. Work backward: find the lien filing deadline first, subtract any required waiting period, then set a pay-by date that still leaves time to prepare and record the lien. How to file a mechanics lien before the deadline walks through the rest of that sequence.

If you've exchanged lien waivers during the job, reconcile them before you send the notice. Demanding payment on a balance you've already waived is an avoidable mistake. Waiver exchange without deadline drift covers how to keep those records clean, and what is a waiver of lien to date? explains how far a progress waiver reaches.

What to include in a notice of intent to lien

A strong notice of intent to lien is specific, factual, and unambiguous. At minimum, include:

• The parties: your company, the customer who owes you, and the property owner and general contractor.
• The project: the property address and, where you have it, the legal description.
• The amount owed: the outstanding balance, tied to invoice numbers and dates.
• A pay-by date: a specific date by which payment must be received.
• A statement of intent: a clear sentence that you intend to file a lien if payment isn't made by that date.

Where a statute requires the notice, it may also dictate what goes in it and how it's delivered:

• Content. Wisconsin's notice must briefly describe the nature of the claim, its amount, and the land and improvement it relates to, and a copy must be attached to the lien claim. Missouri's must state that you hold a claim against the building or improvement, the amount, and from whom it is due. Nevada's residential notice must include substantially the same information as the notice of lien, such as the lien amount, the owner's name, who hired you, your payment terms, and a description of the property.
• Delivery. Certified mail isn't always enough. Nevada allows personal delivery or certified mail. Missouri's statute provides for service by an officer authorized to serve civil process or by any person who would be a competent witness, proven by the officer's return or an affidavit. Connecticut requires service by a state marshal, another proper officer, or an indifferent person, and allows registered or certified mail only in some cases.
• Recipients. Wisconsin's notice goes to the owner. Missouri's goes to the owner, owners, or agent. Nevada's goes to the owner and the reputed prime contractor. Connecticut's goes to the owner and, in some cases, the original contractor.

Keep the tone professional and matter-of-fact. Where a state prescribes content, recipients, or delivery, follow a counsel-approved template for that state rather than a generic form.

Before you send: a quick checklist

• Confirm whether a notice of intent is required in this state for your role and project type, and if so, its timing, content, recipients, and delivery method.
• Verify the lien filing deadline and subtract any statutory waiting period, so your pay-by date still leaves room to file.
• Double-check the balance against invoices and any waivers already exchanged.
• Confirm the correct recipients and their current addresses.
• Use a counsel-approved template for the state, and send it by the required method.
• Log the send date, method, and proof of delivery.

Check your lien deadline first

A notice of intent is only as good as the lien deadline behind it. The free lien deadline calculator returns reviewed supplier deadline baselines for Florida and Kansas; other states return a review-required result. The state lien guides cover all 50 states and Washington, DC, and cite the governing statutes.

Frequently asked questions

Is a notice of intent to lien required before filing a lien?

Only in some states. Wisconsin requires one from every lien claimant and Missouri from everyone except the original contractor, before the lien is filed, and Nevada requires one on residential projects before you record. Connecticut requires one from most claimants who didn't contract directly with the owner, but its deadline runs from your work (no later than 90 days after you stop furnishing), not from the lien filing. If your state's lien statute doesn't call for one, it's optional, though it can still prompt payment before you file.

How many days before filing a lien do I have to send a notice of intent?

It depends on the state. Among the examples above, Wisconsin requires at least 30 days and Missouri at least 10 days before the lien is filed. On residential projects, Nevada requires a "15-day notice of intent to lien" before you record (the Nevada State Contractors Board says to send it at least 15 days before), and serving it extends the recording deadline by 15 days. Connecticut sets a window instead: no later than 90 days after you stop furnishing. There is no national rule.

Is a notice of intent to lien the same as a lien?

No. The notice warns that a lien may be filed; the lien is the document recorded against the property. The exception is terminology: in the District of Columbia, the document called a "notice of intent" is the recorded filing that preserves a contractor's lien. See what is a notice of lien? for how the recorded document works.

Can I send a notice of intent to lien if my state doesn't require one?

Generally, yes. Where the statute doesn't require one, a notice of intent is a demand letter. Keep it accurate, send it while your lien deadline is still open, and make sure you could actually file the lien you're warning about.

This is operational guidance, not legal advice. Use counsel-approved policies for final notice and lien decisions.