What a mechanic's lien is and when you can file one
A mechanic's lien is a legal claim you can place on a property if you provided labor or materials for work on that property but were not paid. Unlike other liens, you do not need a court judgment first — you file the lien directly with the county recorder's office. The lien gives you a claim against the property itself, which means the owner cannot sell or refinance without dealing with your unpaid bill.
You can file a mechanic's lien if you are a contractor, subcontractor, laborer, or supplier who worked on or provided materials for a construction, repair, or improvement project. The work must have physically improved the property — routine maintenance or services that do not add permanent value usually do not may have access to. The property owner, a general contractor, or another contractor can owe you the money; the lien attaches to the property regardless of who hired you.
Timing matters. Most states require you to file within a set window after the last day you worked or delivered materials — commonly 90 days, but this varies significantly by state. Some states give you as little as 30 days; others allow up to 120 days. Missing this important date means you lose the right to file, so checking your state's specific window is the first step.
Key Takeaways
- A mechanic's lien is filed with your county recorder's office, not a court, and creates a legal claim against the property itself.
- You must file within your state's important date — usually 30 to 120 days after your last day of work or material delivery — or you lose the right permanently.
- Before filing, most states require you to send a preliminary notice to the property owner, general contractor, and lender, sometimes weeks before you start work.
- The lien document itself includes your name, the property address, a description of the work or materials, the amount owed, and the dates you worked.
- Filing costs vary by county but typically range from $50 to $200, and the lien remains on the property record until the debt is paid or released.
Preliminary notice requirements before you file
Many states require a preliminary notice (also called a notice of intent) before you can file a lien. This notice tells the property owner, general contractor, and lender that you are working on the project and may file a lien if you are not paid. The notice must be sent within a specific window — often within 20 days of starting work or first delivering materials — and must be sent by certified mail, hand delivery, or email (depending on what your state allows).
If you skip the preliminary notice when your state requires it, you may lose the right to file a lien altogether, even if you meet the filing important date. Some states allow you to file without it if you have a direct contract with the property owner, but subcontractors and suppliers almost always need to send one. Check your state's statute or contact your county recorder's office to confirm whether preliminary notice is required in your situation.
Keep copies of the certified mail receipt or delivery confirmation. You will need proof that you sent the notice within the required timeframe if the lien is ever challenged in court.
Gathering the information you need to file
Before you go to the county recorder's office or file online, collect the following details: the property's full legal description (found on the deed or property tax records), the property owner's name and address, the general contractor's name if one was hired, the lender's name if the property is mortgaged, the exact dates you started and finished work (or first and last delivery dates), a detailed description of the work performed or materials supplied, and the total amount owed.
The property's legal description is not the street address — it is the lot, block, and subdivision number, or the metes and bounds description. You can find this on the property deed, the county assessor's website, or by calling the county recorder's office. Using the wrong legal description can make your lien invalid, so take time to get it exactly right.
Write out a clear, specific description of what you did or provided. "Labor and materials for kitchen renovation" is too vague; "Installed new electrical wiring, outlets, and light fixtures in kitchen per contract dated March 15, 2024" is what the lien document needs. The more specific you are, the harder it is for someone to argue the lien is invalid.
Completing and filing the lien document
The lien document itself is called a claim of lien or mechanic's lien statement, and the form varies by state. Some states provide an official form; others allow you to use a standard format as long as it includes required information. Your county recorder's office website usually has the form, or you can search "[your state] mechanic's lien form" to find the official version.
Fill in your name and address, the property owner's name and address, the property's legal description, the general contractor's name (if applicable), the lender's name (if applicable), the dates of work, the description of work or materials, and the amount owed. Some states require you to state whether you have a direct contract with the owner or are a subcontractor. Sign and date the document — most states require your signature to be notarized, though a few do not.
Take or mail the completed lien document to your county recorder's office along with the filing fee (typically $50 to $200, depending on the county). Some counties accept online filing through their website; others require in-person or mail submission. The recorder will stamp it with the filing date and record number, and it becomes part of the public property record when ready. Request a certified copy for your records.
What happens after you file
Once filed, the lien appears on the property's title and shows up in title searches. This prevents the owner from selling or refinancing without addressing your claim. The owner or lender may contact you to negotiate payment or dispute the lien. If the debt is paid, you must file a lien release or satisfaction of lien with the same county recorder's office to remove it from the record.
If the property is sold, the sale proceeds are held in escrow and used to pay liens in order of priority. A mechanic's lien typically has priority over a mortgage if the work began before the mortgage was recorded, though this varies by state. If there is not enough money from the sale to cover all liens, you may need to pursue a lawsuit to recover the remaining balance.
The lien remains on the property record until it is paid, released, or a court orders it removed. In some states, if the debt is not resolved within a set period (often one to three years), the lien expires and you lose the claim unless you file a lawsuit to enforce it. Check your state's rules on lien duration so you know when action is required.
When you cannot file or when filing may not work
You cannot file a mechanic's lien if you miss your state's important date, which is why timing is critical. You also cannot file if you did not send a required preliminary notice (in states that mandate it). If you are a laborer hired by a subcontractor rather than the general contractor, some states restrict your lien rights or require additional steps.
A lien is also less effective if the property has no equity — for example, if the owner owes more on the mortgage than the property is worth. In that case, a sale would not generate enough money to pay you. If the property owner is judgment-proof (has no assets or income), a lien may not lead to payment even if it is valid.
If you cannot file a lien or it does not work, you still have other options: you can sue the property owner or contractor in small claims court (if the amount is small enough) or file a regular lawsuit for breach of contract. These routes take longer and cost more, but they do not depend on meeting a filing important date.
State-specific rules and where to find them
Mechanic's lien law is set by each state, and the rules differ significantly. Your state's filing important date, preliminary notice requirements, form, and priority rules are all spelled out in your state's statutes — usually in the section on construction law or property law. The easiest way to find the exact rules is to visit your county recorder's office website or call them directly; they handle these filings constantly and can tell you what your state requires.
Many states also have a construction lien board or contractor licensing board that publishes guides. Your state bar association may have a summary for contractors. If you are working on a large project, a real estate attorney in your state can review your situation and confirm you are following the correct steps — this is often worth the cost if the amount owed is substantial.
Frequently Asked Questions
Do I have to send preliminary notice before I start work?
It depends on your state and your role on the project. If you have a direct contract with the property owner, you may not need to send it. If you are a subcontractor or supplier, most states require you to send it within 20 days of starting work or first delivering materials. Check your state's statute or call your county recorder's office to confirm whether it applies to you.
What if the property owner says they will pay me later?
A verbal promise to pay later does not stop the clock on your filing important date. You still must file within your state's window (usually 30 to 120 days after your last day of work) if you want to preserve your lien rights. If the owner does pay before the important date, you can file a lien release to remove it from the record.
Can I file a lien if I was hired by a subcontractor, not the owner?
Yes, in most states. You can file a lien even if you were not hired directly by the property owner. However, you must follow all the rules for your state, including sending preliminary notice if required. Some states have additional restrictions on subcontractors' lien rights, so confirm your state's rules.
How much does it cost to file a mechanic's lien?
The filing fee varies by county but typically ranges from $50 to $200. You may also need to pay for notarization (usually $10 to $25) and certified mail or delivery confirmation. If you hire an attorney to prepare or file the lien, that will cost more, but many contractors file on their own to save money.
What happens if someone disputes my lien?
The property owner or lender can file a lawsuit to challenge the lien, claiming it is invalid because you did not do the work, the amount is wrong, or you did not follow the filing rules. You will need to defend the lien in court, which is why keeping detailed records of your work, invoices, and proof of preliminary notice is essential.