Intent to lien letter. What it is, when to send it, and what goes in it.

You finished the work. You sent the invoice. Six weeks later you're still waiting on the check.

The intent to lien letter is the move you make before you file the actual mechanics lien. It tells the owner and the GC that you've run out of patience, you know your rights, and a lien is the next step if they don't pay within the window you set.

It works often enough that most contractors think of it as collection, not a legal threat. Levelset's data shows roughly 47% of these letters get paid within 20 days and 56% within 42 days. That's faster than most invoice-chasing emails ever land payment.

What an intent to lien letter actually is

It's a written demand sent to the property owner, general contractor, and sometimes the lender, warning that a mechanics lien will be filed if the unpaid balance isn't settled within a stated period.

A few names mean the same thing:

• Notice of intent to lien (NOI)
• Pre-lien notice
• Notice of non-payment
• Intent to file a mechanics lien

The letter is not the lien. It doesn't attach to title. It doesn't record at the county. It's a warning. The lien comes next if the warning gets ignored.

The reason it works is that owners and lenders take liens seriously. A recorded mechanics lien clouds title, can stop a sale, and can trigger default clauses with the construction lender. Most owners would rather pay the sub than let that happen.

Who sends one. And who they send it to.

The sender is anyone who provided labor or materials to the project and hasn't been paid. In practice that's usually a subcontractor or a material supplier. The general contractor can send one too, but in most disputes the GC is the one receiving it from a sub-tier party.

The letter goes to:

• The property owner. Always.
• The general contractor. Always, if you're a sub or supplier.
• The construction lender. In some states (Colorado is one).
• The party who hired you. Sometimes a separate copy is required by statute.

Some states also require you to record proof of delivery later when you file the actual lien, so certified mail with return receipt isn't optional. It's the receipt you'll attach to the lien claim if it gets that far.

When the letter is required by law

Most states don't require an NOI before you file a mechanics lien. But for private projects, around ten states do. The exact list shifts as statutes get amended, so check your state code, but the recurring names include:

• Arkansas
• Colorado
• Connecticut
• Missouri
• Nevada
• New Jersey
• North Dakota
• Pennsylvania
• Wisconsin
• Wyoming

In these states, skip the NOI and your lien claim can be invalid even if every other deadline is met. The pre-lien notice is a statutory prerequisite.

Federal and most public projects are different. Mechanics liens don't attach to public property. The remedy there is a Miller Act or Little Miller Act bond claim, which has its own notice rules and isn't an NOI.

If you're working in Louisiana, New Jersey, or Idaho, our state guides cover the local lien-filing rules that come after the NOI window closes.

How much warning to give

10 to 30 days is the standard. The state statute pins down the exact number for required NOIs:

• Colorado: 10 days before filing
• Connecticut: 30 days before filing
• Pennsylvania: 30 days before filing
• Wisconsin: 30 days before filing
• Missouri: 10 days before filing

In states where the NOI is optional, you can pick the window. 10 days is firm. 30 days is generous. Most contractors land on 15 to 20 days as a reasonable balance between giving the owner a real chance to pay and not running out the clock on the underlying lien deadline.

One thing that catches people out: the NOI doesn't extend your real lien deadline. The clock on filing the mechanics lien itself keeps running while the NOI window plays out. If you wait 30 days and the lien window expires the day after, you've lost your rights. Calendar both dates separately the moment you send the letter.

What goes in the letter

A generic "you owe me money" letter doesn't qualify as an NOI. The statute (or, in optional states, common sense) wants specifics. Include:

• Date of the letter. This anchors the countdown.
• Your name, business name, and address. As the claimant.
• The owner's name and the property address. Both the mailing address and the legal description if you have it.
• The general contractor's name and address. If you contracted with them directly, say so.
• The hiring party. Who actually hired you (could be the GC, could be a higher-tier sub).
• Description of the work or materials. What you provided. Keep it specific. "Framing labor" beats "construction services."
• Dates of first and last work. When you mobilized and when you walked off or made your last delivery.
• The unpaid balance. Exact dollar amount. Don't round.
• The deadline. "Unless payment is received by [date], a mechanics lien will be filed against the above property."
• Signature. Wet ink or DocuSign. Either works for most states.

The warning sentence is the load-bearing part. Statutes that govern NOIs tend to require a clear statement that a lien will follow non-payment. Vague language ("we may consider legal options") doesn't satisfy the requirement and gives the owner a defense if you do file.

The Levelset NOI guide has the most complete state-by-state breakdown of required language and recipients. Their state pages are searchable and free.

What happens after you send it

Three things, roughly in order of likelihood:

1. The owner pays. Roughly half the time, the letter is enough. The owner doesn't want a lien on title. The GC doesn't want a hold on their next progress payment. Money shows up before the deadline.

2. The GC calls you. Often the owner forwards the letter to the GC and asks what's going on. You get a call, the dispute surfaces, and you negotiate a settlement. Document the resolution in writing. If they pay, send a conditional waiver tied to the payment. Sign nothing unconditional until the check clears.

3. Nothing happens. The window closes. You file the mechanics lien at the county recorder's office. Your NOI becomes evidence that you gave the statutory notice, which most states require you to prove when you record the lien.

A fourth, rarer outcome: the owner or GC starts a payment plan, asks you to hold off filing, and partial payments start. This is where contractors get burned. The partial payment doesn't pause your lien clock. Either get the full balance in escrow, get the payment plan in a signed agreement that explicitly extends your time to file, or file the lien and release it when the balance is paid.

NOI vs. preliminary notice. They're different.

A preliminary notice is sent early in the project, usually within 20 to 60 days of starting work, to preserve your right to file a lien later. It's a heads-up that you're on the job and you have lien rights.

An intent to lien letter is sent at the end, after a payment has gone unpaid, to warn that a lien is coming.

You may need to send both. The preliminary notice protects your rights. The NOI is the demand that uses those rights. If you skipped the preliminary notice and your state required it, the NOI alone won't save you.

For a deeper dive on why subs hesitate to interact with these documents at all, see why subcontractors don't sign lien waivers. Same underlying tension. Same payment-versus-rights tradeoff.

How LienDone fits into the pre-lien workflow

LienDone is built for the step before the dispute. The point where the GC sends a conditional lien waiver, the sub signs it on their phone, and the payment releases against a signed PDF. If you run that loop cleanly, you cut the share of payments that drift into NOI territory in the first place.

For the GCs we work with, the loop looks like this:

• Cut the check.
• Send the conditional progress waiver via LienDone's lien waiver software.
• The sub signs in two minutes.
• The waiver lands in your dashboard with the timestamp.
• The check clears, the waiver fires, and the payment record is closed.

When that loop is clean, the sub has no reason to send you an NOI. When it isn't, the NOI is what shows up in your mailbox six weeks later. Most of the disputes that turn into letters started with a payment that went out without a signed waiver attached.

The takeaway

An intent to lien letter is the cheapest legal tool a sub or supplier has. It costs about $10 in certified mail postage and resolves nearly half of disputes within three weeks.

If you're sending one, write it specifically, give a real deadline, send it certified, and calendar your real lien deadline separately. If you're receiving one, take it seriously. The contractor on the other end paid for the stamp because they're done waiting.

FAQ

What is an intent to lien letter?

A pre-lien demand letter. It tells the property owner and GC that if they don't pay within a set window, you'll file a mechanics lien. It's the warning, not the lien itself.

Is an intent to lien letter legally required?

Only in about 10 states for private projects. Even where optional, it's one of the cheapest ways to get paid. Around 47% of NOIs result in payment within 20 days.

How long do I give them before filing?

10 to 30 days, depending on your state statute. Colorado requires 10 days. Wisconsin requires 30. In optional states, 15 to 20 days is a reasonable balance.

Does sending an NOI extend my lien deadline?

No. The underlying mechanics lien deadline keeps running. Calendar both dates separately.

How should I deliver the letter?

Certified mail with return receipt requested. Some states require it. Either way, you want a paper trail proving the owner and GC received the letter.

Who do I send it to?

The property owner, the general contractor, and in some states the construction lender. Send to every party with skin in the payment chain.