New Hampshire Mechanic Lien Deadlines

All Claimants — 120-Day Attachment Mechanic Lien Deadline

All claimants in New Hampshire, including general contractors, subcontractors, and material suppliers, must file an attachment mechanic lien within 120 days of the date of last furnishing labor or materials to the project. The attachment mechanic lien is the mechanism by which the claimant secures an interest in the property as security for the amount owed.

The 120-day period is measured from the claimant's last date of furnishing, not from the date of completion of the overall project. This deadline also serves as the enforcement window, as suit must be commenced within the same 120-day period.

Attachment Mechanic Lien vs. Traditional Mechanic Lien

New Hampshire's attachment mechanic lien system differs from the traditional mechanic lien recording process used in most states. Rather than recording a mechanic lien document and then having a separate period to file suit, New Hampshire combines both steps into a single 120-day window. The claimant must both file the attachment and commence the enforcement action within this period.

This compressed timeline requires claimants to act quickly and to engage legal counsel early in the process. Waiting until near the end of the 120-day period to begin the process may not leave sufficient time to prepare and file the necessary court documents.

Filing Requirements & Procedures

The attachment mechanic lien is filed through a court proceeding. The claimant must prepare and file the necessary court documents, including a petition for attachment and supporting affidavits. The court will review the petition and, if the requirements are met, issue an order of attachment securing the claimant's interest in the property.

The attachment must be properly recorded to be effective against subsequent purchasers and encumbrancers. Claimants should work with qualified legal counsel to ensure proper filing.

Subcontractor Prerequisites

Subcontractors and suppliers who do not have a direct written contract with the property owner must have served timely notice within 15 days of commencing work as a prerequisite to a valid attachment mechanic lien. Without proper preliminary notice, the attachment mechanic lien may be challenged and dismissed.