The purpose of the A-1-20 zone is to provide for the proper utilization of those lands best suited for agriculture and composting recycling purposes, and to prevent the encroachment of incompatible uses. The regulations set out in this chapter shall apply to all land in the A-1-20 agriculture district. (Ord. 2286 § 1, 1995)

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 described in this chapter. (Ord. 2286 § 1, 1995)

Permitted uses in the A-1-20 zone are:

   Apiaries, provided that no hives or boxes housing bees shall be kept closer than three hundred feet (300') from any dwelling other than that occupied by the owner of the apiary.

   Farms or ranches for the grazing, breeding or raising of not more than two (2) horses, cattle, goats or sheep per acre. Except for the keeping of up to three (3) horses, as provided for in sections 18.44.020 through 18.44.050 of this title, no animal(s) shall be housed or corralled closer than five hundred feet (500') from any existing residence in the R-1, R-1-D, R-2, R-2-2000 or R-3 zone, or one hundred feet (100') from any property line.

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

   Farmworker and agricultural worker housing, consisting of no more than twelve (12) units or thirty six (36) beds, in accordance with Article XIV of Chapter 18.156 of this title.

   Orchards, groves, nurseries, the raising of field crops, tree crops, berry crops, bush crops, truck gardening and commercial flower growing.

   Single-family residences; provided, however, that there shall be not more than two (2) dwellings on each parcel of twenty (20) acres or more. Where parcels of land are already subdivided into parcels less than twenty (20) acres in area, there shall be permitted one dwelling for each lot, provided the lot contains dimensions and an area equivalent to the closest single-family residential zone.

   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. 2286 § 1, 1995)

Uses permitted by conditional use permit in the A-1-20 zone are:

Aviaries and hatcheries.

Composting recycling operations which may include the use of sludge and other composting materials and the sale of related landscaping items.

Dairies, including the processing of milk.

Farms or ranches for commercial raising of poultry or rabbits. No more than five hundred (500) poultry or rabbits for each twenty thousand (20,000) square feet of lot area; provided, however, that such rabbits or fowl are kept at least fifty feet (50') from any property line, and five hundred feet (500') from any residential zone, church, school, park or hospital.

Grange halls and similar uses incidental to the promotion and development of sound agriculture.

Riding stables or academies; provided that the minimum lot size for such use shall be not less than five (5) acres, and that all such buildings for the housing, feeding or rental of such animals shall be at least one hundred feet (100') from any property line, and five hundred feet (500') from any R-S or R-1 zone, church, school, park or hospital. (Ord. 2286 § 1, 1995)

The following property development standards shall apply to all land and buildings in the A-1-20 zone. (Ord. 2286 § 1, 1995)

Each lot shall have a minimum area of twenty (20) acres. (Ord. 2286 § 1, 1995)

   A.   Each lot shall have a minimum width of six hundred sixty feet (660').

   B.   Each lot shall have a minimum depth of one thousand two hundred feet (1,200'). (Ord. 2286 § 1, 1995)

Population density shall be one dwelling unit per twenty (20) acres. For lots existing at the time of the adoption of the ordinance codified in this chapter, not more than one dwelling unit shall be located on any lot containing less than twenty (20) acres. (Ord. 2286 § 1, 1995)

Maximum coverage by structures shall be ten percent (10%) of the lot area. (Ord. 2286 § 1, 1995)

Except as provided in section 18.152.030 of this title, all buildings and structures shall have a height of not greater than two and one-half (21/2) stories or thirty five feet (35'). (Ord. 2286 § 1, 1995)

Each lot shall have a front yard of not less than twenty five feet (25') extending across the full width of the lot. (Ord. 2286 § 1, 1995)

   A.   Each lot shall have a side yard on both sides of the main building, or buildings, of not less than five feet (5').

   B.   See subsection 18.148.030E of this title for regulations applying to side yards on corner lots.

   C.   See subsection 18.148.030F of this title for regulations applying to side yards on reversed comer lots. (Ord. 2286 § 1, 1995)

Each lot shall have a rear yard of not less than twenty five feet (25'); provided lots of less than forty thousand (40,000) square feet may have projections into the rear yard in accordance with provisions for the R-A zone in section 18.152.070 of this title. If a lot of forty thousand (40,000) square feet or less has a width of more than one hundred twenty feet (120'), the permitted projection may be forty feet (40') wide. (Ord. 2286 § 1, 1995)

   A.   Accessory buildings shall not occupy more than ten percent (10%) 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 C 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.   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.

      2.   Exterior light fixtures shall be a design, or 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.

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

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

      5.   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. 2286 § 1, 1995)

For off street parking, the provisions of chapter 18.164 of this title shall apply. (Ord. 2286 § 1, 1995)

For fences, landscaping and walls, the provisions of chapter 18.168 of this title shall apply. (Ord. 2286 § 1, 1995)

For signs, the applicable provisions of the Redlands sign code shall apply. (Ord. 2286 § 1, 1995)