The purpose of the R-R Rural Residential District is to provide for the development of large residential lots in a rural environment. The regulations set out in this chapter shall apply to all land in the R-R Rural Residential District. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.50, 1955)

In the R-R District, no building or structure or land shall be used, and no building or structure shall hereafter be erected, structurally altered or enlarged, except for the following purposes, set out in sections 18.28.030 and 18.28.040 of this chapter. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.60, 1955)

Principal permitted uses in R-R Districts include:

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

   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 kept not less than forty feet (40') from dwellings on the property and not less than forty feet (40') from side property lines and streets, and not less than one hundred feet (100') from all other structures used or intended for human occupancy, and not less than one hundred feet (100') from a future residential building site, and not less than one hundred feet (100') from a public park or schools, and compliance with the following:

      A.   Evergreen planting screens, or other protective devices, shall be required on property lines when minimum distances are used;

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

      C.   Lot area for one horse shall not be less than twenty five thousand (25,000) square feet, with fifteen thousand (15,000) square feet additional lot area for each additional horse.

   Single-family dwellings, not more than one dwelling for each 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. 1908 § 1, 1986: Ord. 1000 § 13.60(A), 1955)

The commission may, by resolution of record, permit any other uses which it may determine to be similar to those listed in section 18.28.030 of this chapter, in conformity with the intent and purpose of the R-R Zone, and not more obnoxious or detrimental to the public health, safety and welfare, or other uses permitted in this zone. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.60(B), 1955)

Uses permitted by conditional use permit in the R-R Zone include uses listed in chapter 18.192 of this title, in accordance with the provisions of that chapter. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.70(B), 1955)

The following property standards, set out in section 18.28.080 through 18.28.200 of this chapter, shall apply to all land and buildings in the R-R Zone. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80, 1955)

   A.   Minimum lot area in the R-R District is one acre.

   B.   Any land parcel with an average cross slope of fifteen percent (15%) or greater is subject to slope density requirements of chapter 18.138, "HD Hillside Development District", of this title. (Ord. 2050 § 1, 1988: Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(A), 1955)

In the R-R Zone:

   A.   Each lot shall have a minimum width of one hundred twenty five feet (125') for a one acre parcel, one hundred fifty feet (150') for a 1.5 acre parcel, and two hundred feet (200') for a two (2) acre or larger parcel.

   B.   Each lot shall have a minimum depth of one hundred twenty five feet (125'). (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(B), 1955)

Maximum population density in the R-R Zone is one dwelling unit per one acre. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(C), 1955)

Maximum coverage by structures in the R-R Zone is ten percent (10%) of the lot area; provided legal, nonconforming lots of less than one acre in size are permitted to have the following lot coverage:

   A.   Thirty percent (30%) of the first fourteen thousand (14,000) square feet of lot area;

   B.   Twenty percent (20%) of the next additional twenty six thousand (26,000) square feet of lot area; and

   C.   Five percent (5%) of the next additional three thousand five hundred sixty (3,560) square feet of lot area. (Ord. 2585 § 1, 2004: Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(D), 1955)

Buildings and structures in the R-R Zone 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. 1908 § 1, 1986: Ord. 1000 § 13.80(E), 1955)

In the R-R Zone:

   A.   Each lot shall have a front yard of not less than twenty five feet (25') extending across the full width of the lot.

   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. 1908 § 1, 1986: Ord. 1000 § 13.80(F), 1955)

In the R-R Zone:

   A.   Each lot shall have a side yard on both sides of the main building, or accessory buildings, of not less than ten feet (10').

   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 corner lots. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(G), 1955)

In the R-R Zone, each lot shall have a rear yard of not less than twenty five feet (25'). (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(H), 1955)

For accessory buildings in R-R Zones, the provisions of section 18.20.160 of this title shall apply. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(I), 1955)

For off street parking in R-R Zones, the provisions of chapter 18.164 of this title shall apply. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(J), 1955)

For fences, landscaping and walls in the R-R Zone, the provisions of chapter 18.168 of this title shall apply. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(K), 1955)

In R-R Zones, the applicable provisions of the Redlands Sign Code shall apply. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(L), 1955)

For grading in the R-R Zone, the provisions of the Redlands grading ordinance shall apply, except that grading shall be the minimum necessary to provide for a building site. (Ord. 1908 § 1, 1986: Ord. 1000 § 13.80(M), 1955)