A New Hampshire mechanic’s lien is used by tradespersons and material suppliers to secure payment for unpaid labor or supplies from a client by claiming an interest in their property. This document gives unpaid parties leverage, as the lien will show up on the property’s public records, hindering the owner’s ability to sell or obtain financing.

Unlike most other states, New Hampshire law requires that the claimant file a legal petition with the court, initiating a lawsuit before they’ll be granted the right to lien (this can be done ex parte; that is, without notifying the property owner). If the petition is approved, the petitioner can file a mechanic’s lien against the property. If the contractor or supplier has no direct contact with the property owner, then a Notice of Intent to Claim Lien must be served prior to the mechanic’s lien as a preliminary notice.