[Amended 7-12-2011 by L.L. No. 3-2011; 5-30-2018 by L.L. No. 3-2018]
Accessory apartments shall be allowed by special permit within existing single-family dwellings in the AB, LD, RD5, RD3, R1.5, R1, H, I, HB, B1 and B2 Districts, provided that:
A. No exterior changes shall be made which will alter or extend the existing foundation of the principal structure.
B. The accessory apartment is self-contained, with separate cooking, sleeping and sanitary facilities for use by the occupant(s).
C. Any additional exterior entrances which may be created shall be located at the side or rear of the structure.
D. The accessory apartment is subordinate to the principal residence and contains no more than 35% of the total habitable space of the existing structure prior to the construction of such accessory apartment or 650 square feet, whichever is the more restrictive.
E. The accessory apartment shall be limited to two bedrooms.
F. The conversion of any existing single-family dwelling to accommodate an accessory apartment, as defined herein and in §
143-4, is limited to one accessory apartment per principal residence.
G. Each principal residence and accessory apartment is, at the time of conversion, on a single lot with lot area of no less than one acre, except in the LD and RD5 Districts where a minimum of three acres shall be required.
H. Parking, as required for an accessory apartment/principal residence, shall be a minimum of two spaces per dwelling unit on-site and shall be designed and located to be convenient without encroaching on any required yard or setback area.
I. Approval has been granted by the Dutchess County Health Department for any required on-site sanitary sewage or water supply facilities, including, as may be applicable, certification through either the Health Department or a licensed professional engineer retained by the applicant that the existing on-site water supply and sewage disposal facilities are sufficient to accommodate the additional demands of the accessory apartment on the residential premises where such conversion is proposed.