RSA 483-B:11 Nonconforming Structures.

I. Except as otherwise prohibited by law or applicable municipal ordinance, nonconforming structures located within the protected shoreland may be repaired, replaced in kind, reconstructed in place, altered, or expanded. Repair, replacement-in kind, or reconstruction in place may alter or remodel the interior design or existing foundation of the nonconforming structure, but shall result in no expansion or relocation of the existing footprint within the waterfront buffer. However, alteration or expansion of a nonconforming structure may expand the existing footprint within the waterfront buffer, provided the structure is not extended closer to the reference line and the proposal or property is made more nearly conforming than the existing structure or the existing conditions of the p