New Hampshire Construction Attorney — Find a Lien & Payment Lawyer (2026)
✓ Verified against New Hampshire statutes · Reviewed August 2026 · By Michael Evan — Founder · 50 states · 799 rules
New Hampshire mechanics lien deadlines at a glance
Preliminary Notice
None — N/A
Mechanics Lien
120 days — From last date of furnishing
Enforcement
1 year — From attachment
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When Does a New Hampshire Contractor Need a Construction Attorney?
New Hampshire construction matters that benefit most from attorney engagement share a pattern: a court step or a notice, amount, or timing issue — the RSA 447:10 attachment, the RSA 447:6 notice, the RSA 447:8 owner-retention cap, or the 120-day clock — decides whether the lien exists, survives, and is worth anything. New Hampshire's requirement that a claimant sue and attach the real estate within 120 days to preserve the lien, with nothing recorded to fall back on, is the single biggest reason contractors here engage counsel earlier than in states where a recorded claim ripens for a year. Common attorney-engagement triggers: the lien exists but must be secured by the RSA 447:10 attachment through the RSA 447:12-a Superior Court procedure within 120 days; a subcontractor that never gave the RSA 447:6 notice before furnishing (so no lien arises); a payment dispute over $20,000; the RSA 447:8 owner-retention cap that may have gutted the claim because the owner already paid the contractor; an approaching 120-day attachment deadline; a contested attachment where the owner moves to dissolve or reduce it; a priority fight with a construction lender over the attached property; New Hampshire public works requiring a payment-bond claim under RSA 447:16; and a federal project at the Pease Air National Guard Base, the New Boston Space Force Station, or the Manchester VA Medical Center.
What New Hampshire Construction Attorneys Do
A New Hampshire construction attorney with substantive RSA chapter 447 practice commences the civil action and obtains the RSA 447:10 real-estate attachment through the RSA 447:12-a Superior Court procedure within 120 days of last furnishing — the step that preserves and enforces a New Hampshire lien; prepares and serves the RSA 447:6 written notice to the owner before a non-privity subcontractor or supplier furnishes, so a lien arises at all, and keeps the RSA 447:7 account current; analyzes the RSA 447:8 owner-retention cap and whether the lien reaches a meaningful amount; times the RSA 447:6 notice early so owner funds are frozen while money remains in the pipeline; calendars and meets the 120-day attachment clock measured from last furnishing and confirms the correct Superior Court and current record owner; defends the RSA 447:12-a attachment at the prompt hearing the owner is entitled to and resists motions to dissolve or reduce it; litigates lien-enforcement and foreclosure actions in the New Hampshire Superior Court and resolves priority fights with lenders; files New Hampshire public-works payment-bond claims under RSA 447:16 and federal Miller Act bond claims under 40 U.S.C. § 3131 et seq.; and enforces or resists construction arbitration clauses while litigating New Hampshire construction contract disputes.
How to Find a Vetted New Hampshire Construction Attorney
Three reliable paths to a substantively qualified New Hampshire construction attorney: (1) the New Hampshire Bar Association, which operates a Lawyer Referral Service and supports construction-law continuing legal education covering RSA chapter 447 — the secret-lien scheme, the RSA 447:6 subcontractor notice, the RSA 447:8 owner-retention cap, and the distinctive RSA 447:10 / RSA 447:12-a real-estate attachment obtained through the Superior Court, plus public-works and federal Miller Act practice; (2) local practitioners across the Manchester and Nashua market (Hillsborough County), the Seacoast around Portsmouth (Rockingham County), and Concord (Merrimack County), Dover and Rochester (Strafford County), and Keene (Cheshire County) for local Superior Court attachment and lien-enforcement and foreclosure procedure across New Hampshire's 10 counties; and (3) the Mechanics Lien Management New Hampshire attorney network, which connects contractors with vetted construction attorneys filtered by county, claim size, project type (Manchester-Nashua commercial and industrial construction, Seacoast and Lakes Region development, high-tech and institutional work, and federal Miller Act practice at the Pease Air National Guard Base, the New Boston Space Force Station, and the Manchester VA Medical Center), and matter type. Because New Hampshire preserves the lien only through a Superior Court attachment, the right attorney is one who routinely litigates New Hampshire lien attachments.
New Hampshire Construction Attorney Fees
New Hampshire construction attorney rates run highest in the Manchester and Nashua market (Hillsborough County) and the Seacoast around Portsmouth (Rockingham County), where hourly rates typically run $250–$450, with senior partners at established New Hampshire construction-focused firms charging $400–$550. Rates run $225–$375 in Concord, Dover, Rochester, and Keene. Because New Hampshire has no cheap recording step and instead requires a court attachment to preserve the lien, engagements are more litigation-weighted than in recording states. Many engagements are quoted flat: RSA 447:6 notice and RSA 447:7 account preparation ($300–$900); the RSA 447:12-a petition and civil action to obtain the real-estate attachment that secures the lien ($4,500–$15,000, because it is a Superior Court action inside 120 days); lien-enforcement and foreclosure litigation ($7,000–$22,000); RSA 447:8 owner-retention-cap analysis ($800–$2,500); and New Hampshire public-works and federal Miller Act payment-bond claims ($3,500–$15,000). Contingency engagements (30%–40% of recovery) are available on liquid, well-documented collection cases, and initial consultations are typically free or low-cost. On larger matters, hybrid hourly-plus-contingency or capped-hourly arrangements are commonly negotiated.
New Hampshire-Specific Construction Law Issues
New Hampshire's lien framework is shaped by three distinctive features. First, the secret lien — under RSA chapter 447 nothing is recorded in the registry of deeds; the lien arises by operation of law under RSA 447:2 (contractor in privity with the owner) or RSA 447:5 (a subcontractor who first gives the RSA 447:6 notice) and is invisible on the land records until a court attachment issues. Second, perfection strictly by attachment — under RSA 447:9 and RSA 447:12 the lien continues only 120 days after last furnishing, and under RSA 447:10 it is secured by attachment of the property while it continues, through the RSA 447:12-a Superior Court procedure a court may grant, often ex parte. Third, the RSA 447:8 owner-retention cap — a non-privity claimant's lien is valid only to the extent of what the owner still owes the contractor when notice is received. The 120-day clock runs from last furnishing. On the licensing side, New Hampshire imposes no general-contractor license requirement, though electricians, plumbers, and other trades are separately licensed and licensing does not condition the lien. No mechanic's lien attaches to public property — pursue the payment bond required under RSA 447:16 on New Hampshire public construction; the federal Miller Act at 40 U.S.C. § 3131 et seq. governs federal work at the Pease Air National Guard Base in Newington, the New Boston Space Force Station, and the Manchester VA Medical Center.
Michael Evan's New Hampshire Network
Mechanics Lien Management is anchored by Michael Evan — founder of Mechanics Lien Management, a construction-payment software platform. For New Hampshire matters, the Mechanics Lien Management attorney review service connects contractors with vetted New Hampshire construction attorneys — including practitioners in the Manchester and Nashua market (Hillsborough County), the Seacoast around Portsmouth (Rockingham County), Concord (Merrimack County), Dover and Rochester (Strafford County), and Keene (Cheshire County) — across New Hampshire's 10 counties. On lower-stakes matters, the Mechanics Lien Management New Hampshire lien generator and State System handle the RSA 447:6 notice and the RSA 447:7 account, calendaring the 120-day attachment deadline so the Superior Court step is flagged before it lapses.
Frequently Asked Questions
When does a New Hampshire contractor need a construction attorney?
When (1) a payment dispute exceeds $15,000–$20,000, (2) the lien must be secured under RSA 447:10 — which requires commencing a civil action and obtaining a real-estate attachment through the Superior Court under RSA 447:12-a within 120 days of last furnishing, a court step most claimants cannot handle alone, (3) a non-privity subcontractor or supplier needs to give, or failed to give, the RSA 447:6 written notice to the owner before furnishing, without which no lien exists, (4) the RSA 447:8 owner-retention cap may have gutted the claim because the owner already paid the contractor, (5) the 120-day attachment clock — measured from last furnishing — is approaching, (6) the RSA 447:12-a attachment is contested and the owner moves to dissolve or reduce it, (7) a priority fight with a construction lender arises over the attached property, (8) the project is public works requiring a New Hampshire payment-bond claim under RSA 447:16, or (9) the project is federal (the Pease Air National Guard Base in Newington, the New Boston Space Force Station, the Manchester VA Medical Center) requiring a federal Miller Act claim under 40 U.S.C. § 3131 et seq. Because New Hampshire has no recording step and preserves the lien only through a Superior Court attachment inside 120 days, attorney involvement comes earlier than in states where a recorded claim ripens for a year.
How much does a New Hampshire construction attorney cost?
Hourly: $250–$450 in the Manchester-Nashua and Seacoast / Portsmouth markets; $225–$375 in Concord, Dover, Rochester, and Keene. Senior partners at established New Hampshire construction firms $400–$550. Flat fees: RSA 447:6 notice + RSA 447:7 account preparation $300–$900; RSA 447:12-a petition + civil action to obtain the attachment (within 120 days) $4,500–$15,000; lien-enforcement / foreclosure litigation $7,000–$22,000; RSA 447:8 owner-retention-cap analysis $800–$2,500; New Hampshire public-works / federal Miller Act bond claim $3,500–$15,000. Contingency 30%–40% on liquid collection cases. Because New Hampshire has no cheap recording step and instead requires a court attachment inside 120 days, engagements more often involve litigation fees than recording states. Initial consultations typically free or low-cost.
What is unique about New Hampshire construction lien law?
Three features: (1) the secret lien — under RSA chapter 447 nothing is recorded in the registry of deeds; the lien arises by operation of law under RSA 447:2 (contractor in privity with the owner) or RSA 447:5 (a subcontractor who first gives the RSA 447:6 notice) and is invisible on the land records until a court attachment issues; (2) perfection strictly by attachment — under RSA 447:9 (subcontractors) and RSA 447:12 (contractors) the lien continues only 120 days after last furnishing, and under RSA 447:10 it is secured by attachment of the property while it continues, through the RSA 447:12-a Superior Court procedure a court may grant, often ex parte, so a claimant must actually sue and attach within 120 days; and (3) the RSA 447:6 pre-notice and RSA 447:8 owner-retention cap — a non-privity claimant acquires a lien only by giving the owner written notice before furnishing, and the lien is valid only to the extent of what the owner still owes the contractor. The 120-day clock runs from last furnishing. New Hampshire requires no general-contractor license, though electricians, plumbers, and other trades are separately licensed.
How do I find a vetted New Hampshire construction attorney?
Three paths: (1) the New Hampshire Bar Association (Lawyer Referral Service) and its construction-law CLE on RSA chapter 447 — the secret-lien scheme, the RSA 447:6 subcontractor notice, the RSA 447:8 owner-retention cap, and the distinctive RSA 447:10 / RSA 447:12-a real-estate attachment obtained through the Superior Court, plus public-works and federal Miller Act practice; (2) local practitioners across the Manchester and Nashua market, the Seacoast around Portsmouth, and Concord, Dover, Rochester, and Keene for local Superior Court attachment knowledge across New Hampshire's 10 counties; and (3) the Mechanics Lien Management New Hampshire attorney network — vetted by county, claim size, project type (Manchester-Nashua commercial and industrial, Seacoast and Lakes Region, high-tech and institutional, federal Miller Act at the Pease Air National Guard Base, the New Boston Space Force Station, and the Manchester VA Medical Center), and matter type. Because New Hampshire preserves the lien only through a Superior Court attachment, the right attorney is one who routinely litigates New Hampshire lien attachments — not a general practitioner.
Can a New Hampshire construction attorney work on contingency?
Yes, when (1) the debt is liquid and well-documented, (2) any non-privity claimant gave the owner the RSA 447:6 notice before furnishing so a lien actually exists, and gave it early enough that the RSA 447:8 owner-retention cap leaves a meaningful amount, (3) the civil action and RSA 447:10 real-estate attachment were (or can still be) obtained within 120 days of last furnishing to secure the lien, and (4) there is real equity in the property to reach. Contingency 30%–40% of recovery. Because New Hampshire's lien depends on a timely court attachment — not merely a recorded claim — and because the RSA 447:8 owner-retention cap can leave even a timely lien empty if the owner has already paid the contractor, pre-engagement diligence on the RSA 447:6 notice, the owner-retention position, and the 120-day attachment deadline is essential before agreeing to contingency.
Do I need a New Hampshire construction attorney to file a lien?
There is no lien to 'file' in New Hampshire — nothing is recorded in the registry of deeds. The RSA 447:6 notice and the RSA 447:7 account that a subcontractor must give to acquire and value its lien can be prepared with the Mechanics Lien Management New Hampshire lien generator. But New Hampshire differs from most states in a way that pushes claimants toward an attorney sooner: the lien is preserved only by a real-estate attachment under RSA 447:10, obtained through the RSA 447:12-a Superior Court procedure within 120 days of last furnishing, and that court step generally requires a New Hampshire construction attorney. Other traps that defeat self-prepared claims include a subcontractor furnishing work before giving the RSA 447:6 notice (so no lien arises); giving the notice late and being capped out by RSA 447:8 after the owner has paid the contractor; miscounting the 120 days from the invoice instead of last furnishing; and hunting for a claim-of-lien form to record that does not exist. The lien generator handles the RSA 447:6 notice, the RSA 447:7 account, and the deadline calendar; the RSA 447:10 attachment, contested dissolution motions, foreclosures, and Miller Act claims require attorney representation.
What construction-law resources does the New Hampshire Bar offer?
The New Hampshire Bar Association offers a Lawyer Referral Service and supports construction-law continuing legal education covering RSA chapter 447 — particularly the secret-lien scheme with no recording step, the RSA 447:6 subcontractor notice given before furnishing, the RSA 447:8 owner-retention cap, and the distinctive RSA 447:10 / RSA 447:12-a requirement to obtain a real-estate attachment through the Superior Court within the 120-day life of the lien, plus New Hampshire public-works payment bonds under RSA 447:16 and federal Miller Act practice. Local practitioners across the Manchester and Nashua market, the Seacoast around Portsmouth, and Concord, Dover, Rochester, and Keene provide additional construction-law content and referrals across New Hampshire's 10 counties.