N.H. Rev. Stat. § 676:16
Any owner, or agent of the owner, of any land located within a subdivision in a municipality that has adopted subdivision regulations who transfers or sells any land before a plat of the subdivision has been approved by the planning board and filed with the appropriate recording official under RSA 674:35, II, shall forfeit and pay a civil penalty of $1,000 for each lot or parcel so transferred or sold; and the description by metes and bounds in the instrument of transfer or other document used in the process of selling or transferring shall not exempt the transaction from such penalties. The municipality may enjoin a transfer or sale which violates the provisions of this section and may recover the penalty imposed by civil action. In any action to recover a penalty, the prevailing party may recover reasonable court costs and attorney's fees as may be ordered by the court.
RSA 676:16
1983, 447:1. 1997, 92:3, eff. Jan. 1, 1998.