Title 6 — Planning and Zoning

Chapter 6.34 — R-4 MEDIUM-HIGH RESIDENTIAL ZONE

Walnut Zoning Code · 2026-06 edition · ingested 2026-07-07 · Walnut

§ 6.34.010. Intent and general provisions.

The intent of this chapter is to implement policies and actions set forth in the City of Walnut General Plan’s Housing Element and any amendments thereto relating to the provision of a mix of housing types, including medium-high density residential housing that offers housing opportunities to all economic segments of the community while promoting and preserving community characteristics and community vitality. These objectives can be promoted through the adoption of form-based development codes to serve as the basis for prescribing appropriate land uses, project and site

design principles relating to building types, building design, housing mix, and integration of land uses, and appropriate form for pedestrian orientation, streetscapes, and public realm in designated Medium-High and High Residential Zones. Accordingly, there is adopted by reference that certain form-based code: R-4 Medium-High and R-5 Residential Zone, on file with the office of the City Clerk and available online. Building design and site design standards and any and all other land use and development requirements, standards, regulations, or other provisions set forth in the aforementioned form-based code shall apply to all development within the geographic boundaries of areas designated as R-4 zones notwithstanding any other provision of Title 6 to the contrary. (Ord. 22-02, § 1)

§ 6.34.020. Permitted uses.

Only the following uses are permitted in the R-4 zone. No buildings or structures shall be erected, structurally altered or enlarged, or land used, except for the following purposes:

  • Townhomes

  • Condominiums

  • Senior housing

  • Residential developments with 20% lower income units

  • Parking structures*

  • Parking structures is a permitted use pursuant to the R-4 zone. Parking structures are only permitted in conjunction with development in accordance to the R-4 zone.

(Ord. 22-02, § 1; Ord. 23-05, § 2)

§ 6.34.030. Land uses.

The following table identifies the uses of land allowed by this chapter:

Land Use MH H
Accessory Uses
Accessory Uses and Structures P P
Recreation, Education, and Public Assembly Uses
Recreational Facilities P P
Parks and Trails P P
Community Centers P P
Residential Uses
Home Occupation* P P
Multifamily Dwellings P P

Notes:

  • Pursuant to Chapter 6.08.180

    • P = Permitted
  • (Ord. 22-02, § 1)

§ 6.34.040. General development standards.

Development Feature R-4
Residential Density
Density 32.0 – 36.0 du/ac
Minimum Lot Area
Minimum Lot Width 75′
Minimum Lot Depth 100′
Minimum Lot Size (sq. ft.) 5,000 sq. ft.
Minimum Setbacks
Front Yard Setbacks 0′
Minimum Side Yard Setbacks 5′
Minimum Rear Yard Setbacks 10′
Residential Edge Building Setbacks
Adjacent to Existing Residential
Front Yard Setbacks 20′
Side Yard Setbacks 20′
Rear Yard Setbacks 20′
Residential Separated by Street
Front Yard Setbacks 0′
Side Yard Setbacks 5′
Rear Yard Setbacks 10′
Maximum Lot Coverage
Lot Coverage 75%
Building Size and Massing
Maximum Number of Stories 3
Maximum Height 45′
On-Site Parking (Minimum Spaces per Unit)
1 bedroom or studio unit 1
2 bedroom unit 1
3 or more bedroom unit 1
Senior Citizen Housing (per bedroom plus 1 per
employee)
1
Guest Parking (per 8 dwelling units) 1
Minimum Landscaping
Improved Coverage 20%

(Ord. 22-02, § 1)