The following uses shall be permitted in Limited Two-Family Residence Zones (R-1A):

   (A)   All uses permitted in the Single-Family Residence Zones (R-1); and

   (B)   One additional single-family dwelling unit for each 5,500 square feet of lot area in excess of the minimum site area of 5,500 square feet; and

   (C)   One accessory dwelling unit as provided for in § 153.047, and provided all other requirements relating to the development of such units in the R-1 Zone are met; and

   (D)   Conditionally permitted uses in the Single-Family Residence Zone (R-1) shall be permitted by conditional use permit as well in this zone.

(‘65 Code, § 9-3.501) (Ord. 556, passed - - ; Am. Ord. 686, passed - - ; Am. Ord. 427-C.S., passed 6-7-94; Am. Ord. 534-C.S., passed 6-17-03; Am. Ord. 644-C.S., passed 6-19-18)

   (A)   Buildings in the R-1A Zone may be two stories in height but shall not exceed 28 feet.

   (B)   No accessory building or detached garage in the R-1A Zone shall be more than 15 feet in height, measured from the lowest adjoining grade to the highest point of the structure, without first having obtained a conditional use permit as provided for in §§ 153.241 et seq.

('65 Code, § 9-3.502) (Ord. 337-C.S., passed - - ; Am. Ord. 398-C.S., passed - - ) Penalty, see § 153.999

   The minimum building site area in R-1A Zones shall be on one lot of not less than 5,500 square feet.

('65 Code, § 9-3.503) (Ord. 556, passed - - ; Am. Ord. 686, passed - - ) Penalty, see § 153.999

   (A)   Each front yard in an R-1A Zone shall be not less than 20% of the average depth of the lots in the block; provided, however, in no case shall the front yard be less than 20 feet, and it need not exceed 35 feet; and provided, further, where lots comprising 25% or more of the frontage of the block are occupied by buildings, no building erected or structurally altered upon such frontage shall project beyond the average front yard line of the lots next adjacent thereto on either side. A vacant lot shall be considered for this purpose as having a front yard as provided heretofore in this section. A lot having a front yard more than 35 feet in depth shall be considered for this purpose as having a front yard 35 feet in depth.

   (B)   Open, unenclosed porches, platforms, or land places not covered by a roof, awning, or canopy and not surrounded by a railing, which porches, platforms, or landings do not extend above the level of the ground floor of the building, may extend or project into the front yard not more than six feet.

   (C)   On key lots the minimum front yard shall be the average of the required front yard for the adjoining interior lot and the required side yard along the street side of the adjoining reversed corner lot. Where existing buildings on either or both of such adjoining lots are located nearer to the street than the yards required above, the yards established by such existing buildings shall be used in computing the front yard for a key lot.

('65 Code, § 9-3.504) (Ord. 556, passed - - ; Am. Ord. 686, passed - - ) Penalty, see § 153.999

   (A)   Total side yards in the R-1A Zone shall be 16 feet with a minimum of six feet on any one side. Cornices and eaves may extend into the required side yard for a distance not to exceed 18 inches. No other miscellaneous encroachments such as chimneys, bay windows or other architectural feature are permitted, except in a side yard of eight feet or more, in which case an encroachment of a maximum of 18 inches is allowed. For lots of more than 10,000 square feet and 70 feet of lot frontage, each side yard setback shall be increased by one foot for each 1,000 square feet over the 10,000 square foot base. Outside stairways, porches, or landing places unenclosed and unroofed may extend into a required side yard for a distance not to exceed three feet.

   (B)   On corner lots, the side yard on the street side shall not be less than 12 feet.

   (C)   Detached nonhabitable accessory buildings not exceeding one story in height shall maintain a minimum side yard setback of four feet if the building is less than 100 feet from the front property line, and two feet if the building is more than 100 feet from the front property line. For habitable accessory buildings, the side yard setback is five feet.

   (D)   A single story addition to a single story house may be constructed by maintaining the existing building line of the house for a maximum of 50% of the length of the existing house or 25 feet, whichever is greater, provided that the existing side yard setback is at least four feet.

('65 Code, § 9-3.505) (Ord. 337-C.S., passed - - ; Am. Ord. 357-C.S., passed - - ) Penalty, see § 153.999

   Any portion of a single-family dwelling that is in excess of one story shall maintain side yard setbacks of ten feet from each side property line. Cornices and eaves may extend into the required side yard for a distance not to exceed 18 inches. No other miscellaneous encroachments such as chimneys, bay windows or any other architectural features are permitted, except in a side yard of eight feet or more, in which case an encroachment of a maximum of 18 inches is allowed.

('65 Code, § 9-3.505(a)) (Ord. 337-C.S., passed - - ) Penalty, see § 153.999

   (A)   The rear yard in R-1A yards shall be not less than 20 feet in depth.

   (B)   In computing the depth of the rear yard from any building where such yard opens upon a public street, alley, way, or park, one-half, but not to exceed ten feet of the width of such street, alley, way, or park, may be considered to be a portion of the rear yard.

   (C)   Outside stairways, unroofed and unenclosed, may extend into rear yards for a distance not to exceed four and one-half feet.

   (D)   A detached accessory building not exceeding one story in height may occupy not more than one- half the area of the rear yard.

('65 Code, § 9-3.506) (Ord. 556, passed - - ; Am. Ord. 686, passed - - ) Penalty, see § 153.999

   No detached dwelling, or other main building, in the R-1A Zones shall be closer than 20 feet to any other detached dwelling or main building on the same building site, and no detached accessory building, or ADU shall be closer than six feet to any other accessory building or main building on the same building site. No detached accessory building shall be used as a dwelling prior to the erection, construction, or occupancy of a dwelling, apartment house, hotel, or other principal or main structure permitted within the R Zones.

(‘65 Code, § 9-3.507) (Ord. 556, passed - - ; Am. Ord. 686, passed - - ; Am. Ord. 534-C.S., passed 6-17-03; Am. Ord. 653, passed 10-1-19) Penalty, see § 153.999

   Lot coverage for existing and new single-family homes shall not exceed 35% of the total net lot area. For the purposes of this calculation, buildings, impervious surfaces greater than 42 inches in width (other than required driveways), covered and uncovered patios (other than required landings), accessory structures (including but not limited to garages, carports, storage sheds, gazebos, pool equipment rooms and similar structures), and raised and at-grade decks shall be counted toward the lot coverage.

(‘65 Code, § 9-3.508) (Ord. 337-C.S., passed - - ; Am. Ord. 534-C.S., passed 6-17-03; Am. Ord. 608-C.S., passed 5-10-14; Am. Ord. 636-C.S., passed 8-15-17) Penalty, see § 153.999

   No single-family dwelling in excess of one story in whole or part shall exceed a floor area ratio (FAR) of .35. Detached garages are excluded from the calculation. Excluded from the calculation are any other detached accessory buildings not intended to be habitable.

('65 Code, § 9-3.509) (Ord. 337-C.S., passed - - ) Penalty, see § 153.999

   The second story floor area shall be 25% less than the first floor area. Detached garages are excluded from the calculation. Integral garages are included within the calculation. An integral garage is one with at least two sides connected to the house.

('65 Code, § 9-3.510) (Ord. 337-C.S., passed - - ) Penalty, see § 153.999

   If an integrated garage is proposed to be located in the front of a house, then the garage portion shall be set back an additional ten feet from the average front line of the house portion. Lots greater than 10,000 square feet and 70 feet of lot frontage are excluded from this requirement.

('65 Code, § 9-3.511) (Ord. 337-C.S., passed - - ) Penalty, see § 153.999

   For new or existing houses, if the total living area of the house is more than 2,500 square feet, then one additional garage space is required.

('65 Code, § 9-3.512) (Ord. 337-C.S., passed - - ) Penalty, see § 153.999