In the R-1A, R-1B, and R-1C zones, the following standards of development shall apply:
A. Building Height.
1. Two and one-half stories and not to exceed thirty-five feet.
2. Accessory Buildings. All detached accessory structures, including, but not limited to, garages, garden and storage sheds, and accessory living quarters, shall not exceed a height of one story or fifteen feet, whichever is less. All accessory buildings shall be architecturally and visibly compatible with the main dwelling unit. This provision shall not apply to structures that comply with the setback requirements for the main dwelling.
3. No penthouses or roof structures for the housing of elevators, stairways, tanks, ventilating fans or similar equipment; towers, steeples or other structures shall exceed the height limit provided in this title. Radio and television masts, camouflaged wireless communication facilities, flagpoles, chimneys and smokestacks may extend not more than thirty-five feet above the height limit provided in this title; provided, however, that the same may be safely erected and maintained at such height in view of the surrounding conditions and circumstances.
B. Front Yard.
1. There shall be a front yard of not less than that identified in Table 18.24.040.B or twenty-five percent of the depth of the lot, whichever is less, except where lots comprising forty percent of the frontage on one side of a street between intersecting streets are developed with buildings having an average front yard with a variation of not more than ten feet, no building hereafter erected or structurally altered shall project beyond the average front yard line established. In determining such front yard depth, buildings located more than thirty-five feet from the front property line or buildings facing a side street on a corner lot shall not be counted.
Table 18.24.040.B |
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Zone | Distance from Front Property Line |
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R-1a | 25 feet |
R-1b | 25 feet |
R-1c | 20 feet |
2. For all buildings or houses fronting on a cul-de-sac, there shall be a minimum setback of fifteen feet from the property line to all parts or portions of such buildings or houses.
3. Where yards are required in this chapter, they shall be not less in depth or width than the minimum dimension specified for any part, and they shall be at every point open and unobstructed from the ground upward, except as follows:
a. Cornices, canopies, carports, eaves or other similar architectural features not providing additional floor space within the building may extend into a required front, side or rear yard not to exceed two feet six inches.
b. Open, unenclosed, uncovered porches, platforms or landing places which do not extend above the level of the first floor of the building, may extend into any front, yard not more than six feet; provided, however, that an open work railing not more than thirty inches in height shall be installed or constructed on any such porch, platform or landing place.
4. The area of the required front yard setback, except for required driveways and walkways, shall be landscaped with evergreen or similar plant and lawn materials and maintained to provide a consistent greenbelt along all residential neighborhoods. At no time shall any portion of the required landscaped front yard setback be used for the parking or storage of any vehicle of any kind or any vehicle parts or similar item except as provided in Section
18.12.050(F) of this title.
C. Side Yards.
1. There shall be a side yard on each side of a main building of not less than five feet; provided, that there shall be a side yard along the street side of all corner lots of not less than ten feet. Where a garage is attached to or built into the main building, such garage shall be set back a minimum of twenty feet from the side lot line along the street side of a corner lot when the garage door faces the street.
2. Detached accessory buildings may occupy side yards as provided in Section
18.12.030.
3. On a corner lot no detached accessory buildings shall be located at a distance less than ten feet from the side street line. A detached garage shall be located at least twenty feet from the side street line when the garage door faces the street.
D. Rear Yard.
1. There shall be a rear yard behind every main building of not less than twenty-five feet or twenty-five percent of the depth of the lot, whichever is less.
2. Detached accessory buildings may occupy rear yards as provided in Section
18.12.030.
3. A private garage of not to exceed six hundred square feet may be a part of the main building if the garage and the main building have a common wall of not less than five feet in length, or if connected by a roof of not less than five feet in width. Such attached garage may extend into the required rear yard for a distance of not more than fifteen feet.
4. A private garage may be connected to a single-unit residence with an unenclosed breezeway, and in such cases the garage need not be considered part of the main building for purposes of maintaining the required rear yard.
5. On through lots, either line separating such lot from a public thoroughfare may be designated by the owner as the front lot line. In such cases, the minimum rear yard shall be the average of the yards on lots next adjoining. If such lots next adjoining are undeveloped, the minimum rear yard shall conform to the front yard setback for the zone in which the property is located.
6. A patio roof may extend into a required rear yard setback no more than fifteen feet; provided, however, the patio is unenclosed on no less than two sides. For purposes of this subsection, an enclosure shall be a wall of solid material either transparent or opaque that is higher than three feet.
7. An addition for habitable purposes to an existing single-unit structure may encroach a maximum of fifteen feet into the required rear yard setback subject to the following provisions:
a. For the purposes of this chapter, an existing single-unit structure shall be one for which the certificate of occupancy was issued at least one year prior to the approval of any encroachment allowed by this chapter.
b. Any addition allowed by this chapter shall be deemed by the planning division of the city to be similar to and compatible with the architecture of the existing structure with particular reference to the roof line, the roof covering and the exterior wall surface.
c. A minimum of one thousand square feet of usable yard area as defined in subsection
F of this section.
d. A minimum setback of ten feet from the rear property line shall be maintained.
E. Area Requirements.
1. The minimum lot area shall be not less than identified in Table 18.24.040.E.
Table 18.24.040.E |
|---|
Zone | Minimum Lot Area Per Dwelling Unit | Minimum Ground Floor Area |
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R-1a | >10,000 sf per dwelling | >1,500 sf |
R-1b | >7,200 sf per dwelling | >1,200 sf |
R-1c | >5,500 sf per dwelling | >1,000 sf |
Except any lot with less area than herein required and was recorded prior to the passage of this section may be developed with a single-unit dwelling unit and any accessory use permitted by this title. Minimum floor areas shall not include open or enclosed porches, patios or garages.
F. Usable Yard Area.
1. For each dwelling unit placed on a lot or parcel there shall be provided one thousand square feet of usable yard area. Such usable yard space shall have no dimension less than fifteen feet, except that not more than fifty percent of the required usable yard area may have a minimum dimension of twelve feet. This area may be provided at any location on the lot except in the required front yard or in a required side yard abutting a street. Such space may be divided into not more than two separate subareas.
2. Such usable area shall not be used for parking, driveways, automobile turning area or accessory buildings. Maximum gradient for usable yard area shall be five percent.
G. Parking. See Chapter
18.14, Off-Street Parking Requirements.
(Ord. 1719 § 1, 2010; Ord. 1852, 12/4/2023; Ord. 1853, 12/18/2023)