In each district no other use than the types specified as "permitted," or "permitted on appeal," shall be allowed (See article VI). Uses specified as "permitted" shall be permitted upon application to the building inspector. Uses specified as "permitted on appeal" are exceptions and no permit shall be issued for such uses except with the written approval of the board of adjustment and subject to such conditions as said board may require to preserve and protect the character of the district.

In each district each structure hereafter erected or altered shall be provided with the yards specified and shall be on a lot of the area and width specified in article VI. No open space or lot required for a building or structure shall, during its life, be occupied by or counted as open space for another building or structure.

In all residential districts where a lot is located at the intersection of any two streets and where the lots are arranged so as to allow houses to face both streets, there shall be a setback requirement on both streets equal to the front yard setback. Where building lots are back to back in an arrangement which will not allow for houses to face the side street, there shall be a minimum side yard requirement on the street of 15 feet.

In all residential districts where a house is oriented at an angle to abutting streets, the rear yard shall be determined by measuring the shortest distance perpendicular to the rear of the house to the closest property line and by then adding one half the distance of the altitude of the remaining triangle. The sum of these two distances may not be less than the required rear yard as specified under the appropriate district in article VI, residential district requirements.

No lot shall be reduced in area so that yards and other open spaces total less than the minimum area required under this ordinance.

In each district each structure hereafter erected or altered shall not exceed the heights specified in the district requirements, article VI.

It is the intent of this ordinance that there shall be but one main structure plus any permitted accessory structures on any lot used for residential purposes; also, that accessory structures shall not include living quarters, except that in all district protective shelters approved by the emergency management agency or FEMA may provide temporary living quarters.