I suspect the frontage in question is the same parcel with a boathouse on it that you had questions about subdividing in another thread. If this is the case I can lay out the way the current dock rules and Shoreland (RSA 483-B) subdivision frontage requirements affect the build out potential for the frontage. The approved boathouse and associated docking structures provide 3 slips. Under Wetlands docking / slip density rules a property must have 150 feet of shoreline frontage (there is a specific frontage definition in wetlands rules) to qualify for a three slip docking facility. Under the Shoreland Protection Act, RSA 483-B, the minimum shoreland frontage (slightly different definition in law) required per new lot created with frontage is 150 feet. So it's safe to say that if the frontage is subdivided, the boathouse lot must retain at least 150 feet of shoreline frontage as defined in Wetlands rules to retain all of the previously approved structures and the other lot could have at most 200 feet of frontage based on the previous stated total of 350. On 200 feet of shoreline frontage the current Wetlands rules on slip density for residential use will only allow for a dock design that provides for 3 slips. Please note that this is a limit on design and the size of the docking structure that is approvable. If individuals can find a creative way to tie additional watercraft to the structure it is not a wetland permit violation to do so. Wetlands does not regulate moorings. If you want to know what the mooring potential is you will need to contact the Depart of Safety, Marine Patrol or simply review their rules.
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