The open area of a lot on which a dwelling is erected, or proposed to be erected, shall not be reduced to less than 15,000 square feet for each family. No building not erected for a dwelling shall occupy more than 20% of the gross area of the lot or exceed a height of 25 feet.

A front yard of not less than 30 feet shall be provided for every building on a lot for which a setback is not hereinafter provided for. Every building shall be set back from the center line of each adjoining street or area reserved for highway purposes, or any extension or separated portion thereof hereafter established, not less than the street setback specified upon the Official Zoning Map, except that the following reductions may be made for corner lots from the setbacks specified on the Official Zoning Map: five feet when width of lot is more than 80 feet but less than 90 feet; 10 feet when width of lot is more than 70 feet but less than 80 feet; 15 feet when width of lot is 70 feet or less; provided, however, that no setback will be less than 15 feet plus 1/2 the width of the abutting road or area reserved for highway purposes.

A side yard of not less than 10 feet shall be provided for on each side of every building.

A rear yard of not less than 20 feet shall be provided for every building, except one of not less than 10 feet shall be provided for a building used for or classified as an accessory use.

Every lot on which a building is erected shall have a minimum width of 80 feet.

No single-family residence built or existing in this district shall have a height greater than 40 feet from the grade abutting the structure on the front side of the structure. For purposes of this subsection, the height of the building shall include the highest roof point of any interior portion of the structure which can be occupied, including, but not limited to, attic and storage structures and observatories which accommodate entry or occupancy by a person, but shall not include roof attachments such as chimneys, antennas or decorative cupolas.