zoneoptics
Riverside County Unincorporated, California · District

R-4

Planned Residential Zone
ResidentialPlanned ResidentialAll Riverside County Unincorporated districts0

Dimensional standards

R-4 lot requirementsSTREETSTREETFront 20 ftRear 10 ftSide 10 ftStreet side 10 ftMin width 40 ftMin depth 80 ftMIN LOT AREA3,500 sq ftMAX HEIGHT50 ftMAX DENSITY7.26 du/ac
Plan view of the district’s stated lot requirements. Solid line: the property line. Dashed: the setback lines the ordinance imposes; a building must stay inside the tinted envelope. Drawn from the figures extracted below — illustrative, not a survey.

Lot

Minimum lot areaMinimum lot areaThe smallest parcel on which the district allows anything to be built.
3,500 sq ftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Minimum lot widthLot widthHow wide a lot must be, usually measured at the front setback line.
40 ft
Minimum lot depth
80 ft

Density

Maximum density
7.26 du/acredu/acreDwelling units per acre — the number of homes allowed on each acre of land.
Lot area per dwelling unitLot area per dwelling unitLand required for each home — the same limit as du/acre, expressed per unit instead of per acre.
6,000 sq ftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

SetbacksSetbackThe distance a building must be held back from a lot line.

FrontSetbackThe distance a building must be held back from a lot line.
20 ft
RearSetbackThe distance a building must be held back from a lot line.
10 ft
SideSetbackThe distance a building must be held back from a lot line.
10 ft
Street sideSetbackThe distance a building must be held back from a lot line.
10 ft

Height & bulk

Maximum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.
50 ft

Housing

Single-familySingle-family dwellingOne dwelling unit on its own lot, usually detached from its neighbours.
by_right
Two-family
conditionalConditional useAllowed only after a discretionary approval — usually a public hearing and a board vote.
Three-family
conditionalConditional useAllowed only after a discretionary approval — usually a public hearing and a board vote.
Four-plus family
conditionalConditional useAllowed only after a discretionary approval — usually a public hearing and a board vote.

Uses

Permitted by right9

Conditional / special use6

Accessory1

Extracted standards

9 individual requirements pulled out of this section’s prose, each with the sentence it came from.

Height

Other

  • Minimum lot areaMinimum lot areaThe smallest parcel on which the district allows anything to be built. for individual sewage disposal21,780 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

    Individual sewage disposal systems shall not be permitted on lots containing an area of less than one-half acre unless a report has been received by the planning commission from the county health department stating that such a system will be acceptable.

  • Minimum area for R-4 zone9 acresacre43,560 square feet — about the size of an American football field without the end zones.

    The R-4 zone shall not be applied to any area containing less than nine acres.

  • Multiple-family dwellings must comply with R-3 zone

    The use shall comply with all provisions of the R-3 zone.

  • Permanent access for pedestrians and emergency vehicles

    Adequate and permanent access from a public street to each family dwelling shall be provided for pedestrians and emergency vehicles.

  • Recreation areas must be adequate and accessible

    The recreation areas shall be of a size, based on the particular use, adequate to meet the needs of the anticipated population, and shall be arranged so as to be readily accessible to the residents of the subdivision.

  • Subdivision map and development plan required

    Before any structure is erected or use established in the R-4 zone, there shall be a subdivision map recorded and a development plan approved as set forth in section 17.60.060.

Signage

  • Maximum sign area as percentage of wall surface5 pct

    On-site signs, affixed to building walls, stating the name of the structure, use, or institution, not to exceed five percent of the surface area of the exterior face of the wall upon which the sign is located.

From the ordinance

R-4 Planned Residential Zone: min lot area 3,500 sq ft, min width 40 ft, min depth 80 ft, front yard 20 ft, side yard 5 ft, rear yard 10 ft, max height 50 ft (one-family 40 ft).
Chapter 17.60