In the event such accessory building construction, installation or placement is not subject to New York State Uniform Fire Prevention and Building Code (Uniform Code), as amended, requirements, and as a further zoning and public safety requirement, the location shall nevertheless meet the following requirements:
(1) The separation distance between the exterior walls of the permanent structure (dwelling/attached garage) and such accessory building shall be a minimum of 10 feet unless:
(a) The exterior of the walls of the permanent structure and accessory building each have not less than a one-hour fire-resistant rating, in which case no minimum separation distance will be required; or
(b) The exterior wall of the permanent structure or the accessory building has a one-hour fire resistance rating, in which case the minimum separation distance shall be five feet.
(2) Projections beyond the exterior wall shall not extend more than 12 inches into areas where openings are prohibited unless:
(a) The projections of the permanent structure and the accessory building shall each have a one-hour fire-resistant rating, in which case the minimum separation distance shall be two feet; or
(b) The projection of the permanent structure or the accessory building has a one-hour fire-resistant rating, in which case the minimum separation distance shall be five feet.
(3) The minimum distance of the opening between the permanent structure and accessory building shall be three feet with a maximum opening of 25% of the wall area as such term is defined in the Uniform Code.