A claim of lien is a legal security interest that a contractor, subcontractor, supplier, or design professional can record against real property when they haven’t been paid for labor, materials, or services that improved it. Once recorded, the lien attaches to the land and anything built on it, and the owner generally can’t sell or refinance until it’s resolved. Every state has its own mechanic’s lien statute, so deadlines, notice requirements, and procedures vary by where the property sits.
How a Claim of Lien Works
A mechanic’s lien is created by statute, not by contract. It arises automatically by operation of law when someone furnishes labor, materials, or services to improve real property and isn’t paid.1Legal Information Institute. Mechanic’s Lien The owner doesn’t have to sign anything or agree to it. That’s what makes it powerful: even if the owner paid the general contractor in full, a subcontractor who never got their share can still place a lien on the owner’s property.
Once recorded, the lien becomes a public record. Anyone running a title search sees it, and that effectively freezes most real estate transactions until the lien is dealt with.
Who Can File
Lien rights generally extend to anyone who contributes labor, materials, or professional services to a construction or renovation project:
- General contractors who have a direct agreement with the property owner
- Subcontractors hired by the general contractor or by other subcontractors
- Material suppliers who provide lumber, concrete, fixtures, or other construction goods
- Equipment lessors who rent machinery used on the project
- Design professionals such as architects, engineers, and surveyors whose work contributes to the improvement
The common thread is that the claimant’s work or materials must have enhanced the value of the real property.1Legal Information Institute. Mechanic’s Lien A supplier whose products were delivered to a warehouse but never incorporated into the project may not have valid lien rights, because those materials didn’t improve the property in question.
Licensing Can Make or Break Lien Rights
In states that require contractor licensing, an unlicensed contractor who performs work that requires a license is typically barred from filing a mechanic’s lien. Courts have taken a strict view: if you weren’t legally authorized to do the work, you can’t use the lien statutes to collect for it. In at least one notable case, an appellate court dismissed a contractor’s lien and breach-of-contract claims entirely because the contractor lacked the required license. The rule sometimes reaches further. If a general contractor is unlicensed, subcontractors working under that contractor may also lose their lien rights in some jurisdictions.
Preliminary Notice
Many states require a preliminary notice near the start of the project before you can file a lien. The notice tells the property owner, the general contractor, and sometimes the lender that you’re on the job and intend to preserve your lien rights if you aren’t paid. It functions as a heads-up, not a threat.
Rules differ by state, but subcontractors and suppliers are most often required to send it. General contractors with a direct contract with the owner are frequently exempt. Deadlines typically fall within 20 to 45 days of first furnishing labor or materials. Missing this window doesn’t always destroy your lien rights entirely, but it can limit them. In several states, a late preliminary notice means your lien only covers work performed within a certain number of days before the notice was sent, plus everything after. Work done before that lookback period is lost.
Some states require specific formatting, including particular font sizes and mandatory language. Others require posting the notice to an online registry rather than mailing it. The safest approach is to send the notice immediately upon starting work on any project, whether or not you expect payment problems.
How to File the Lien
Prepare the Document
The lien claim is a written document that must contain specific information. State requirements differ, but nearly every jurisdiction requires the claimant to include a legal description of the property, the name of the property owner, the name of the contractor or party who hired the claimant, a description of the work performed or materials furnished, the dates the work was provided, and the amount of the unpaid balance being claimed. The dollar amount must reflect only unpaid labor and materials. You generally cannot include attorney’s fees or other indirect costs in the lien amount itself, though those may be recoverable later in a foreclosure action.
Accuracy matters. An incorrect property description, a wrong owner name, or an inflated claim amount can give the property owner grounds to challenge and potentially invalidate the lien.
Record With the County
The completed lien gets filed with the county recorder’s office (or equivalent local office) in the county where the property is located. That filing creates the public record that shows up in title searches. Recording fees vary by county but typically run between $25 and $50 for a standard document.
Serve the Property Owner
Most states require the claimant to deliver a copy of the recorded lien to the property owner within a set period after filing. Service methods usually include certified mail, registered mail, or personal delivery. Keep proof of service, whether a signed receipt or an affidavit, because you may need it if the lien leads to a foreclosure lawsuit.
Filing Deadlines
Every state imposes a strict deadline for recording, measured from the date the claimant last furnished labor or materials. These deadlines range from as short as 60 days to as long as six months, depending on the state and sometimes on the claimant’s role. General contractors often get more time than subcontractors, and commercial projects sometimes have different deadlines than residential ones.
A property owner can shorten these deadlines by recording a notice of completion or a similar document. Once that notice is filed, lien claimants may have as few as 10 to 30 days to record their liens instead of the usual window. Owners file notices of completion promptly for this reason: it starts the clock and flushes out any unpaid parties before the owner moves on to selling or refinancing.
Missing the filing deadline is fatal. No court will revive a mechanic’s lien recorded after the statutory period expired, regardless of how legitimate the underlying debt is. The claimant may still have a breach-of-contract claim, but the security interest in the property is gone.
What It Does to the Property Owner
A recorded lien creates what’s known as a cloud on title, a public indication that someone claims an unresolved interest in the property.2Legal Information Institute. Cloud on Title Title companies flag mechanic’s liens during searches, and most buyers and lenders won’t proceed with a purchase or loan until the lien is cleared. The property is effectively stuck. You can’t sell it, refinance it, or use it as collateral until the lien is resolved.
A mechanic’s lien discovered on a title search can also discourage a prospective buyer from purchasing the property entirely.2Legal Information Institute. Cloud on Title Even after the lien is paid and released, the history of a filing can slow a transaction down if the release wasn’t properly recorded.
Lien Priority
When multiple creditors have claims against the same property, who gets paid first matters. The general real estate rule is “first in time, first in right”: whoever recorded their interest first has the senior claim. Under that logic, an existing mortgage recorded years before a mechanic’s lien would take priority.
Mechanic’s liens don’t always follow this rule. Some states treat the lien as attaching on the date work first began on the property, not the date the lien was recorded. If a contractor broke ground before the mortgage was recorded, the mechanic’s lien could have priority over the mortgage, even though the lien document was filed months later. A few states go further and give mechanic’s liens blanket priority over pre-existing encumbrances in certain residential construction situations. A properly perfected mechanic’s lien also runs with the land, meaning it survives transfers of ownership and takes priority over later-recorded encumbrances.1Legal Information Institute. Mechanic’s Lien
How Owners Can Respond
Owners facing a lien have several options, and the right one depends on whether the underlying claim is legitimate.
Pay and Get a Release
The simplest resolution is paying the amount owed. Once paid, the claimant signs a lien release or satisfaction, which the owner records with the county to clear the title. If the dispute is between the owner and a general contractor, and the lien was filed by a subcontractor, the owner may end up paying twice for the same work: once to the general contractor who failed to pass the money along, and again to the subcontractor to clear the lien. This scenario is distressingly common, and it’s exactly what lien statutes were designed to address.
Bond Off the Lien
If the owner needs to clear title but doesn’t want to pay the claimant, often because the claim is disputed, most states allow the owner to post a surety bond that replaces the property as collateral. The lien transfers from the real property to the bond, freeing the owner to sell or refinance. The claim doesn’t disappear; it just shifts to the bonding company instead of the property. The required bond amount is typically set at one and a half to two times the lien amount to cover potential interest and costs.
Challenge an Invalid Lien
Not every lien is legitimate. Owners can petition the court to discharge a lien that is procedurally defective, time-barred, filed by an unlicensed contractor, inflated beyond the actual amount owed, or filed by someone who didn’t actually improve the property. Common grounds for invalidation include an incorrect legal description, a wrong property owner name, failure to send required preliminary notices, or recording the lien after the statutory deadline passed. Some states allow the owner to serve a formal notice demanding the claimant file a foreclosure lawsuit within 30 days. If the claimant doesn’t act, the lien is voided.
Lien Waivers
Lien waivers are the flip side of the process. During a project, owners and lenders routinely require contractors and subcontractors to sign waivers as a condition of each payment. The waiver is what it sounds like: the claimant gives up the right to file a lien for the amount being paid.
There are four standard types. A conditional waiver on progress payment releases lien rights only after the check actually clears. An unconditional waiver on progress payment releases lien rights immediately upon signing, regardless of whether the payment has been received. The same conditional/unconditional distinction applies to final payments. Conditional waivers are far safer for contractors and subcontractors, because they prevent the nightmare scenario of signing away lien rights for a check that bounces.
Owners should collect lien waivers from every tier of the payment chain, including the general contractor, subcontractors, and major suppliers, with each draw request. Skipping this step is one of the most common ways property owners end up with surprise liens from parties they didn’t even know were on the project.
Enforcement Through Foreclosure
If the debt behind a lien goes unpaid, the claimant can file a lawsuit to foreclose on the property. The mechanism is the same as mortgage foreclosure: a court can order the property sold to satisfy the debt. That’s the reason owners take mechanic’s liens seriously even when the amount is small compared to the property’s value.
The claimant has to act within a set time. Most states require the foreclosure lawsuit to be filed within one year of the lien recording date. If the claimant lets that deadline pass without filing suit, the lien expires automatically and is discharged as a matter of law. The deadline is absolute. Some states allow the lien to be extended by court order or by filing an extension with the county, but even those extensions are typically limited to one additional year at a time.