How to Complete and File a New Hampshire Mechanics Lien Form

To place a New Hampshire mechanics lien on a property, you file a writ of attachment through the Superior Court in the county where the property sits and record it at the county Registry of Deeds, and you must do both within 120 days of the last day you performed labor or delivered materials.¹ New Hampshire does not use a standalone lien form recorded at the county level the way most states do. The lien is a court-based attachment under RSA 447, and missing the 120-day window ends your claim with no option to revive it.

Who Can File

RSA 447:2 through 447:4 cover the eligible categories. If you performed labor, provided professional design services, or furnished materials worth $15 or more toward the construction, alteration, or repair of a building or other improvement to real property, you can claim a lien.² That reaches general contractors who deal directly with the owner, architects and engineers, lumber and brick suppliers, and subcontractors or suppliers who worked under a general contractor. The $15 floor is a statutory minimum, so any meaningful contribution clears it.

Where you sit in the contract chain matters for the next step. Direct contracts with the owner skip the notice of intent. Everyone else has to send one.

Notice of Intent (Subcontractors and Suppliers)

If you contracted with a general contractor, an agent, or another subcontractor rather than the owner, RSA 447:5 requires you to send a written notice of intent to the owner (or the person in charge of the property) before you start the work or deliver the materials you’ll later claim against.²

Late notice is still valid under RSA 447:6, but the lien gets capped at whatever the owner still owes the general contractor as of the date the notice arrives.³ If the owner has already paid the general in full by the time your notice lands, your lien can be worth nothing. Send it early.

There’s no prescribed form. A letter stating your name, the property address, the nature of your work or materials, and your intent to claim a lien is enough. Send it by certified mail with return receipt and keep the delivery confirmation.

The 30-Day Account Requirement

Once you’ve given notice under RSA 447:5 through 447:7, you have to furnish the owner a written account of your labor and materials at least once every 30 days. The owner is then required to hold back enough from payments to the general contractor to cover your claim. Each 30-day statement should list the work done or materials supplied during that period, the amounts, and a running total. Skip these, and you weaken what the owner is obligated to retain for you.

The 120-Day Deadline

The lien lasts 120 days from the date you last performed work or delivered materials.¹ Secure it by attachment within that window or it expires. The statute makes no allowance for administrative delay, paperwork mistakes, or late discovery of nonpayment.

The clock runs from your last legitimate contribution to the project. Not the contract date. Not an invoice date. Not the day you realized the check wasn’t coming. Returning to the site to perform trivial or manufactured work just to restart the clock won’t hold up. Document your true final day with dated records.

Preparing the Writ of Attachment

Under RSA 447:10, the writ and the officer’s return must clearly state that the attachment is being made to secure a mechanics lien. Generic attachment language won’t work.⁴ The writ has to describe the property with enough accuracy to identify it. A street address with the tax map and lot number is generally enough; a book-and-page reference from the Registry of Deeds, if you have it, reduces the risk of challenge.

Your writ should carry:

Your full name and address as the claimant.
The property owner’s name and address.
The amount claimed, supported by your contract, invoices, or 30-day accounts.
The dates you first and last performed labor or delivered materials, which establishes the 120-day window.
Who hired you — the owner directly, or a general contractor or subcontractor.

RSA 511-A:8 gives mechanics lien claimants a useful shortcut: you can file a writ of attachment directly at the Registry of Deeds without first getting a court order, as long as the writ takes the form of a lis pendens and is restricted to the specific real estate it describes.⁵ You still have to file the underlying lawsuit, but the recording can happen first, which can save days when the 120-day deadline is close.

Filing, Recording, and Serving

The usual sequence is to file the civil action and writ with the Superior Court in the county where the property sits, record the attachment at the county Registry of Deeds, and then serve the owner. Under the 511-A:8 shortcut, the first two steps can swap order.

Recording at the Registry of Deeds puts the public on notice that the property carries the encumbrance. Until recorded, the attachment is not effective against a good-faith buyer who had no knowledge of your claim.⁶ Record promptly.

Service on the owner is typically handled by a county sheriff or an authorized process server, through personal delivery or, when the defendant can’t be found, substituted service as the court allows.

What It Costs

Budget for three categories of expense before any attorney fees:

Court filing: $325 original entry fee for the civil action in Superior Court, $1 for the writ of attachment, and $40 for an ex parte attachment motion if you file one.⁷
Registry of Deeds recording: $12 for the first page, $4 for each additional page, plus a $2 per-document surcharge. These are set by state statute and are consistent across counties.⁸
Sheriff service: roughly $35 to $70 per service depending on the county and whether in-hand delivery is required, plus mileage at the federal rate.⁹

Total out-of-pocket for filing, recording, and service generally runs between $375 and $475. Legal fees, if you hire a lawyer to draft the writ and handle the filing, will exceed that.

Where Your Lien Stands Against Other Claims

A mechanics lien secured under RSA 447 takes precedence over all prior claims against the property except liens for taxes.¹ That is an unusually strong position. Your lien can outrank an existing mortgage, which is why owners and lenders take mechanics liens seriously.

Federal tax liens are governed separately under 26 U.S.C. § 6323. A federal tax lien isn’t valid against a mechanics lienor until the IRS has filed its notice, and even after filing, a mechanics lien for repair or improvement of an owner-occupied residence with four or fewer units still comes first.¹⁰

Collecting on the Lien

Recording the attachment protects your position. It does not put money in your hand. To collect, you have to litigate the underlying debt and, if the owner refuses to pay the judgment, ask the court to authorize a sale of the property. The court will look at your contract, your invoices and 30-day accounts, proof of performance or delivery, and evidence that you met the notice and timing rules.

If the owner files for bankruptcy before you enforce the lien, the automatic stay halts collection, including foreclosure on the lien. You can still perfect the lien by recording it if you haven’t already, and filing a lien preservation notice under Bankruptcy Code Section 546(b)(2) with the bankruptcy court and serving it on the trustee or debtor in possession protects your deadline. Once the stay is lifted, you have 30 days to resume enforcement.

When a Mechanics Lien Isn’t Available

Some construction contracts include clauses asking subcontractors or suppliers to waive their lien rights. New Hampshire courts have not declared these waivers valid or invalid as a blanket rule, but they appear to be enforceable when the waiver reflects a genuine, intentional decision to give up a known right, stated clearly. Read any waiver clause before signing. Conditional waivers that release the lien only after you actually receive payment are far safer than unconditional waivers that release it the moment you sign.

You also cannot file a mechanics lien against federally owned property. For federal construction projects in New Hampshire, payment protection comes from the Miller Act payment bond on contracts over $100,000, with claims filed in U.S. District Court rather than through RSA 447.¹¹

1
New Hampshire General Court. New Hampshire Code 447:9 – Duration
2
New Hampshire General Court. New Hampshire Code 447:5 – Subcontractors
3
New Hampshire General Court. New Hampshire Code 447:6 – Notice
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New Hampshire General Court. New Hampshire Code 447:10 – How Secured
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New Hampshire General Court. New Hampshire Code 511-A:8 – Ex Parte and Special Attachments
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New Hampshire General Court. New Hampshire Code 511-A:5 – Filing Attachments
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New Hampshire Judicial Branch. Superior Court Fee Schedule
8
Rockingham County Registry of Deeds. Rockingham County Recording Fees
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Cheshire County. Civil Process Fees
10
Office of the Law Revision Counsel. 26 U.S. Code 6323 – Validity and Priority Against Certain Persons
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U.S. General Services Administration. The Miller Act – How Payment Bonds Protect Subcontractors and Suppliers