A notice of intent to file a lien is a formal letter telling a property owner, and sometimes the general contractor, that you will record a mechanics lien against the property if your unpaid balance isn’t paid by a specific date. To write one that holds up, you need the right identifying information, an accurate description of the property and the work, the exact principal owed, a clear deadline, and an unambiguous statement of what happens if the deadline passes. In about a dozen states the notice is a legal prerequisite to a valid lien, so the wording, timing, and delivery method all have to match what your state’s statute requires.
What the Notice Must Contain
A notice that’s vague, incomplete, or missing a required element gets ignored at best and fails to satisfy the statute at worst. Include each of the following:
- Your full legal name, business name, mailing address, phone number, and email. If you’re a subcontractor, name the general contractor or the party who hired you.
- The property owner’s full legal name and address. If the notice also has to go to a general contractor or lender, their details too.
- A property description. The street address at minimum, and ideally the full legal description from the county recorder’s office, including lot number, block number, subdivision, and recording references. Some states will not record a lien based on a street address alone.
- A description of what you provided: the labor, materials, or services, the dates you performed the work or delivered the materials, and where on the property the work took place.
- The exact unpaid balance.
- A reference to the underlying contract: the date of the agreement, the purchase order number, or similar identifying details.
- A specific payment deadline, typically 10 to 30 days from the date of the notice depending on your state’s requirements.
- A clear statement that you will file a mechanics lien against the property if payment isn’t received by that date.
Get the Dollar Amount Right
The amount in the notice should be only the unpaid principal for work actually performed or materials actually delivered. Leave out interest, finance charges, attorney fees, and lien filing costs. Courts in multiple states have held that a lien stating a materially inflated amount can be voided entirely, even when the underlying debt was legitimate. An honest arithmetic error usually won’t kill the claim, but an overcharge that looks intentional is treated very differently. When in doubt, claim less rather than more. You can still pursue the remainder through other legal channels.
Get the Property Description Right
The full legal description is the safest identifier. You can find it on the property deed, the county assessor’s website, or a title report. Some states accept a street address paired with a tax parcel number; others require the full legal description and refuse to record a lien without one. An incorrect or incomplete description can invalidate the lien no matter how much you’re owed, so verify it before the notice goes out. Including both the legal description and the street address is the safest approach.
How to Structure the Letter
Format the notice as a formal business letter. Open with a header block containing your name, address, and the date, followed by the recipient’s name and address. Use a direct subject line, something like “Notice of Intent to File a Mechanics Lien,” so the purpose is unmistakable from the envelope on.
The first sentence should identify you and state that the letter is formal notice of your intent to file a lien. The first paragraph names the property, references the contract, and states the unpaid balance. Don’t bury the point. The recipient needs to understand the stakes within the first few lines.
Use the body to lay out specifics: the work performed or materials supplied, the relevant dates, the amount owed, and the original contract by date or number. Then state the payment deadline and the consequence of missing it. A sentence like “If I do not receive payment of $12,500 by June 15, 2026, I will file a mechanics lien against the property located at [address]” leaves nothing to interpretation.
Close professionally. Sign the letter, print your name, and add your title and contractor’s license number if applicable. Keep the tone firm but businesslike. Frustration about the project or the relationship doesn’t belong anywhere in this letter. You’re building a legal record, and anything you write may end up in front of a judge.
How to Deliver It
Delivery method matters as much as content. Most states that require a notice of intent specify certified mail with return receipt requested. A few accept registered mail or first-class mail. Missouri requires personal service, meaning hand delivery. If your state’s statute names a method, use that method exactly. Substituting one that seems more reliable can invalidate the notice.
Where no method is mandated, certified mail with return receipt requested is still the best practice. The signed, dated return receipt is the evidence you’ll want if the dispute reaches court. Keep the letter, the certified mail receipt, and the signed return receipt card together in your records.
Some states require the notice to go to more than one party. A subcontractor may need to notify both the owner and the general contractor. Check your state’s rule and make sure every required recipient receives a copy through the required method.
Deadlines Around the Notice
Lien rights run on a strict clock. In mandatory-notice states, the notice of intent typically has to be sent 10 to 30 days before the lien is filed. Arkansas and North Dakota each require at least 10 days between the notice and the lien filing. Some states measure the window from your last day of work; others use a fixed period.
The notice sits inside a longer sequence. The lien itself usually has to be recorded within 60 to 120 days of your last day of work or project completion, depending on the state. After recording, you have a limited time, ranging from 90 days to eight months depending on the state, to file a foreclosure lawsuit to enforce the lien. Missing the enforcement deadline makes the lien unenforceable even if it still appears in county records. Track these dates from the start of the project, not from the moment payment becomes a problem. By then half the timeline may already be gone.
What Happens After You Send It
If the owner pays by the deadline, the dispute ends and no lien is filed. That outcome is more common than people expect, because a lien clouds the property title and blocks any sale, refinance, or transfer until it’s resolved. Most owners would rather pay than deal with that.
If payment doesn’t come, the next step is recording the mechanics lien with the county recorder in the county where the property sits. Filing fees are modest, generally $10 to $35. The lien has to contain specific information required by your state’s statute, overlapping heavily with the notice of intent but often with stricter formatting or notarization requirements.
Once recorded, the lien creates the cloud on title. Resolution usually means payment, settlement, or a court fight. If the owner still refuses to pay, you have to file a foreclosure lawsuit inside the enforcement window to preserve your rights. Letting that deadline pass is the same as giving up the lien voluntarily.
When You May Not Have Lien Rights to Back the Notice
A notice of intent is only as strong as the lien right behind it. Two situations commonly strip that right away. Many states require contractors to hold a valid license as a condition of filing a lien; if your state has that rule and you’re unlicensed, the lien claim may be invalid from the start. And you generally cannot place a mechanics lien on government-owned property. On public projects, the usual remedy for nonpayment is a claim against the project’s payment bond rather than a lien. The notice process in this article is for private construction projects.