relative to dwellings over water.

SB 27 allows owners of existing dwellings built over water (such as houseboats or structures on pilings) to repair, reconstruct, or improve them for maintenance or to meet current building codes without expanding the structure's footprint or increasing interior living space. It requires an approved sewage disposal system for any project and permits the commissioner to waive standard restrictions if the project enhances environmental protection without converting recreational use to residential activity or increasing the structure's size (while reducing kitchen/bathroom square footage). Routine maintenance not involving water work does not require a permit. This bill directly affects owners of existing water-based dwellings in New Hampshire.