A notice of intention to file a claim for lien is a formal written warning sent to a property owner, and usually the general contractor, telling them that unpaid labor or materials may result in a mechanic’s lien against the property. It is not the lien itself. In states that require it, sending this notice correctly and on time is a mandatory step before any mechanic’s lien can be recorded, and skipping it or getting the details wrong forfeits the right to file.
Who Has to Send One, and to Whom
The requirement generally falls on anyone without a direct contract with the property owner. That means subcontractors, sub-subcontractors, and material suppliers are the parties who most commonly need to send this notice. The owner didn’t hire them directly and may have no idea they exist, so the notice bridges that information gap.
General contractors who have a signed agreement directly with the property owner are typically exempt. The owner already knows the general contractor and what they’re owed, so there’s no hidden debt to expose. General contractors still have to comply with their own lien filing rules, which vary by jurisdiction.
Material suppliers face a slightly different landscape depending on the state. Some jurisdictions require suppliers to send a preliminary notice at the start of the project and a separate notice of intention before filing a lien. Others fold both requirements into a single document. Suppliers are often the most removed from the owner, which makes strict notice compliance especially important for them.
The notice must go to the property owner and, in most jurisdictions, to the general contractor as well. Some states also require it to be sent to the lender holding the construction loan. Confirm the specific rules for the project’s location before sending anything.
What the Notice Must Contain
A valid notice has to carry specific, accurate information. Some states provide official forms; where they don’t, the document generally needs to include:
- Your full legal name and business address as the claimant.
- The names and addresses of both the property owner and the general contractor.
- The formal legal description of the property, not just the street address.
- A clear description of the labor performed or materials supplied.
- The exact dollar amount owed.
- The date you last furnished labor or materials, since this date triggers most filing deadlines.
The legal property description matters far more than people expect. A street address is not enough; lien documents require the legal description found in the deed or tax records. Getting this wrong is one of the most common reasons notices and liens get thrown out. Pull the description from county records and copy it exactly.
Some states also require notarization, though typically not of the notice itself. The more common requirement is that the affidavit of service proving you delivered the notice must be notarized when it’s later filed alongside the lien. Check your state’s rules before assuming a simple signature is enough.
Deadlines for Sending the Notice
Deadlines are where most claims die. Every state that requires a notice of intention sets its own timeline, and missing the cutoff by even a single day can permanently destroy your lien rights. Two deadline structures are common:
- Days after last furnishing. Some states require the notice to be sent within a set number of days after you last provided labor or materials. Ninety days is a common window in states like Illinois and Connecticut.
- Days before lien filing. Other states require the notice to be sent a minimum number of days before you file the actual lien. Ten days is typical in states like Colorado, Missouri, and Pennsylvania. Wisconsin requires 30 days, and Wyoming requires 20.
These two structures create very different pressures. In a “days after last furnishing” state, the clock starts running whether you realize there’s a problem or not. In a “days before filing” state, you have more control over timing but need to plan ahead so the waiting period doesn’t push you past the lien filing deadline itself. Either way, the date you last provided labor or materials is the anchor for almost every calculation, which is why recording it accurately matters so much.
How to Serve the Notice
Proper delivery is not optional. Handing the notice to someone at a jobsite or dropping it in regular mail will not satisfy the legal requirements in most states. The law requires a method that creates verifiable proof of receipt.
Certified mail with return receipt requested is the most widely accepted method. The green card that comes back signed is your legal proof that the notice reached its destination. Personal service through a process server or sheriff’s deputy is another standard option and can be useful with an unresponsive party, though fees typically run between $20 and $100 depending on location.
Keep every piece of documentation from the service process: the certified mail receipt, the signed return receipt card, or the process server’s affidavit of service. These records are essential evidence if the lien is later challenged. A lien without proof of proper notice delivery is a lien that will likely be struck down.
Mistakes That Invalidate the Notice
Certain errors come up again and again in lien disputes, and any one of them can be fatal:
- Missing the deadline. The single most common failure. A late notice is a dead notice.
- Using the street address instead of the legal description, or copying the legal description with errors.
- Naming the wrong owner. Properties change hands, LLCs hold title, and trusts can complicate ownership. The notice must identify the current owner shown in public records.
- Misstating the last date of work. Because so many deadlines are calculated from this date, getting it wrong can invalidate the lien even if the notice was otherwise perfect.
- Using the wrong delivery method. Sending the notice by regular mail, email, or fax when the statute requires certified mail will not satisfy the legal requirement, regardless of whether the recipient actually received it.
Mechanic’s lien statutes are strict-compliance laws in most states. Courts won’t overlook technical defects just because the underlying debt is legitimate. A contractor who is owed $50,000 for real work can still lose their lien rights over a wrong address or a missed deadline.
What Happens After You Send the Notice
The best outcome is that the notice does its job and prompts payment. When a property owner learns a lien may be filed, they often pressure the general contractor to resolve the debt. If full payment is made, the matter is closed and no lien needs to be filed.
Expect to be asked for a lien waiver in exchange for payment. Waivers come in four basic types: conditional or unconditional, and for either a progress payment or a final payment. A conditional waiver only takes effect once the payment actually clears the bank. An unconditional waiver takes effect immediately upon signing, regardless of whether the check bounces. Never sign an unconditional waiver until the money has cleared your account. Several states mandate specific statutory waiver forms, and using the wrong form or altering the language can make the waiver unenforceable.
If payment doesn’t come, the next step is filing the actual mechanic’s lien with the county recorder’s office. The lien is a separate document with its own filing deadline, typically calculated from the last date of work. That deadline is often longer than the notice deadline, but not always, and the two can overlap in ways that create time pressure.
Recording the lien is not the end of the process. Once recorded, it attaches to the property title and becomes a matter of public record, so the property cannot be sold or refinanced with a clean title until it’s resolved. But the recorded lien alone doesn’t get you paid. You must file a lawsuit to foreclose on the lien within a separate deadline after recording, often ranging from six months to two years depending on the state. If you don’t file suit within that window, the lien expires automatically and becomes unenforceable. Government recording fees for the lien itself are relatively modest; the real costs come with the foreclosure lawsuit if it reaches that point.
Federal Projects Work Differently
Everything above applies to private construction projects. On federal government projects, mechanic’s liens don’t apply because you can’t put a lien on government property. Instead, federal law requires a payment bond on any government construction contract over $100,000, and unpaid subcontractors and suppliers make claims against that bond.
Under the Miller Act, a subcontractor hired directly by the general contractor can bring a claim on the payment bond if they haven’t been paid in full within 90 days after their last day of work, with no prior notice required. A party one step further removed, such as a supplier to a subcontractor, must give written notice to the general contractor within 90 days of last furnishing labor or materials, sent by a method that provides written, third-party verification of delivery, such as certified mail with return receipt requested.1Office of the Law Revision Counsel. 40 USC 3133 – Rights of Persons Furnishing Labor or Material
Any suit must be filed no later than one year after the last day labor was performed or materials were furnished, and it must be brought in the United States District Court for the district where the contract was performed.1Office of the Law Revision Counsel. 40 USC 3133 – Rights of Persons Furnishing Labor or Material The payment bond must equal the total contract amount, and the general contractor is required to furnish it before the contract is awarded.2Office of the Law Revision Counsel. 40 USC 3131 – Bonds of Contractors of Public Buildings or Works
If You Miss the Deadline
Missing your notice deadline doesn’t erase the debt. The money is still owed, and you can still pursue it through a breach-of-contract lawsuit or other collection methods against the party who hired you. What you lose is the leverage of the lien itself, the ability to hold the property until you’re paid. That leverage is often the difference between getting paid and getting a judgment you can’t collect, because the party who owes you may not have assets worth pursuing. The property was your best security, and losing lien rights takes it off the table.
The moment work begins on a project, mark the calendar with every applicable deadline. Waiting until a payment dispute develops to start researching notice requirements is how claims get lost, especially on longer projects where the last date of work may have passed months before anyone realizes there’s a problem.