The purpose of the R-S Suburban Residential District is to provide an environment conducive to the development of low density single-family homes, with no mixing of incompatible uses. The following regulations, set out in this chapter, shall apply to all land in the R-S Suburban Residential District. (Ord. 1000 § 16.00, 1955)

In the R-S District, no building, structure or land shall be used, and no building or structure shall be hereafter erected, structurally altered or enlarged, except for the purposes set out in sections 18.40.030 through 18.40.050 of this chapter. (Ord. 1000 § 16.10, 1955)

Principal permitted uses in the R-S District include:

   Uses permitted in the A-2 Estate Agricultural District, provided the area of the lot shall be not less than that required in the A-2 District.

   Accessory structures for the purpose of maintaining agricultural uses of less than five (5) acres with no expansion of the agricultural use.

   Community Care Facility, licensed or unlicensed, for up to six (6) persons.

   Employee housing for up to six (6) persons, as defined in chapter 18.08 of this title.

   Home occupations, as defined in chapter 18.08 of this title, and subject to the provisions of chapter 18.160 of this title.

   Keeping of horses; provided that stables and corrals for horses are located not less than forty feet (40') from any dwelling on the property and not less than fifty feet (50') from any property lines, and not less than one hundred feet (100') from any existing or future dwelling on adjacent properties, and not less than one hundred feet (100') from a public park or school; and further:

      A.   The evergreen planting screens, or other protective devices, shall be provided along property lines or surrounding the corral and stable areas,

      B.   No grazing shall be permitted in any required yard,

      C.   Lot area for each horse shall be not less than one acre,

      D.   Not more than three (3) horses may be kept on any lot or parcel.

   Single-family residential use, not more than one dwelling unit per lot.

   Supportive and transitional housing for up to six (6) persons intended to serve the target population, as defined in chapter 18.08 of this title. (Ord. 2985, 2025: Ord. 2788, 2013)

Accessory uses in the R-S District include:

Accessory building, such as bathhouse, cabana and storage shed.

Garage or carport.

Guesthouse.

"Home occupation", as defined in chapter 18.08 of this title, and subject to the provisions of chapter 18.160 of this title.

Private greenhouse or horticultural collection incidental to the residential use of the premises.

Private residential sports and recreation court, subject to approval of a permit in accordance with chapter 18.156, article X of this title.

Private swimming pool.

In the R-S District, uses permitted by conditional use permit include uses listed in chapter 18.192 of this title, in accordance with the provisions of that chapter. (Ord. 1000 § 16.10(C), 1955)

The property development standards set out in sections 18.40.070 through 18.40.180 of this chapter shall apply to all buildings in the R-S Zone. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20, 1955)

In the R-S Zone, each lot shall have a minimum area of ten thousand (10,000) square feet. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(A), 1955)

In the R-S District:

   A.   Each lot shall have a minimum width of eighty five feet (85'). Cul-de-sac lots shall have a minimum width of fifty feet (50').

   B.   Each lot shall have a minimum depth of one hundred feet (100'). (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(B), 1955)

Population density in R-S Zones is one dwelling unit per lot. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(C), 1955)

Maximum coverage by structures in the R-S Zone is thirty percent (30%) of the lot area. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(D), 1955)

In R-S Zones, buildings and structures shall have a height not greater than two and one-half (21/2) stories or thirty five feet (35'). See section 18.152.030 of this title for exceptions. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(E), 1955)

In R-S Zones:

   A.   Each lot shall have a front yard extending for the full width of the lot. The yard shall be not less than twenty five feet (25') nor more than forty feet (40') in depth.

   B.   See subsection 18.148.030B of this title for regulations applying to partly built up blocks.

   C.   See subsection 18.148.030D of this title for regulations applying to key lots. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(F), 1955)

In R-S Zones:

   A.   Each lot shall have a side yard on both sides of the main building of not less than ten feet (10'). Each lot shall have not less than a ten foot (10') level side yard on the garage side. A corner lot shall have the garage adjacent to the interior lot line, with not less than a ten foot (10') level side yard.

   B.   For lots containing less than the required minimum frontage, the aggregate side yard dimensions shall be not less than twenty percent (20%) of the width of the lot; provided, however, the minimum side yard on one side shall be not less than five feet (5') and not less than ten feet (10') on the garage side.

   C.   See subsection 18.148.030E of this title for side yards on corner lots.

   D.   See subsection 18.148.030F of this title for side yards on reversed corner lots.

   E.   See chapter 18.148 of this title for regulations applying to computation of yards. (Ord. 2333 § 11, 1997: Ord. 1960 § 1, 1986: Ord. 1000 § 16.20(G), 1955)

Each lot in R-S Zones shall have a rear yard of not less than twenty five feet (25'). See section 18.152.070 of this title for permitted exceptions. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(H), 1955)

   A.   Accessory buildings shall not occupy more than twenty percent (20%) of the rear yard, or may be in an interior side yard area of a parcel where there is no buildable rear yard area. Accessory buildings shall not be placed forward of the front façade of the main dwelling or a line extended parallel to the front façade. Where there are multiple front façades on the main dwelling, the front elevation with the greatest front setback dimension shall be utilized as the required setback.

   B.   An accessory building shall not exceed a total floor area of one thousand (1,000) square feet.

   C.   Accessory buildings must maintain the following minimum separation distances from other buildings on the same site:

      1.   Accessory buildings shall be a minimum of ten feet (10') from the main buildings; provided, however, that when more than five feet (5') of such accessory building extends into the area to the rear of the main building, which area is defined by the projection of planes parallel to the side lot lines, which planes pass through the sides of the main building, in which case the minimum space between buildings shall be twenty feet (20'). In cases where vehicular entry to garage occurs in the space between buildings, the minimum space between buildings shall be not less than twenty five feet (25').

      2.   Accessory buildings shall be a minimum of five feet (5') from any other accessory structure.

   D.   Accessory buildings shall be located not closer to the side and rear property lines than:

      1.   Five feet (5') for buildings up to ten feet (10')high;

      2.   Ten feet (10') for buildings more than ten feet (10') high.

   E.   When lots are served by an existing or proposed alley, no main building shall be located within twenty five feet (25') of the rear property line, and for accessory buildings, if perpendicular access to the accessory building is from the alley, not less than twenty feet (20') from the rear property line. Perpendicular access to a carport or an enclosed garage with an automatic garage door opener may be reduced to a width of twenty five feet (25'), measured from the opposite side of the alley. If access parallel to the alley is provided to a garage or carport, the provisions of subsection D of this section shall apply.

   F.   Accessory buildings shall not exceed a maximum height of fifteen feet (15') as measured from the foundation at ground-level to the highest point of the roof.

   G.   Accessory buildings shall not contain a kitchen or kitchenette.

   H.   Architectural Design:

      1.   Accessory buildings that are five hundred (500) square feet or more shall not contain more than ten percent (10%) metal paneling as a primary exterior material, excluding the roof material.

      2.   Metal paneling, if any, shall be decorative such as stamped steel or seam metal, and shall be painted on the exterior side. Corrugated metal is prohibited. Reflective exterior metallic materials or untreated metal panels are prohibited.

      3.   Use of shipping containers or its parts are prohibited.

      4.   Exterior architectural treatment shall be similar to, or matching, the main residence on the subject property (including exterior materials, siding, and color).

      5.   Exterior light fixtures shall include shielding to contain glare within the subject property and prevent light trespass onto adjacent properties exceeding 0.5 foot-candle as measured at the property line.

      6.   HVAC condensers and heat pumps shall be ground-mounted.

      7.   Window and roof-mounted HVAC equipment shall not be visible from the public right-of-way.

      8.   Exterior stairways to upper floors shall not be visible from public right-of-way at the front or side of the property. (Ord. 2985, 2025: Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(I), 1955)

For off street parking in R-S Zones, the provisions of chapter 18.164 of this title shall apply. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(J), 1955)

For landscaping, fences and walls in R-S Zones, the provisions of chapter 18.168 of this title shall apply. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(K), 1955)

For signs in R-S Zones, the provisions of the applicable regulations of the Redlands Sign Code shall apply. (Ord. 2333 § 11, 1997: Ord. 1000 § 16.20(L), 1955)