RSA 422-B:3 Limitation on Structure.

I. Except as provided in paragraph II, until a permit therefor has been issued by the department, no person shall erect, add to the height of or replace any structure within the areas described in paragraph II of this section which will result in a structure higher than that allowed by that paragraph, nor at any other place in this state which will result in a structure extending more than 500 feet above the highest point of land within a one-mile radius from the structure.
II. In territory surrounding public airports for which zoning ordinances or regulations have been, or hereafter are, made effective by local governmental authorities pursuant to RSA 424, no person shall erect, add to the height of or replace any structure except as allowed by such local zoning ordinances or