Blythe Zoning, Planning & Building Codes

Last reviewed: July 1, 2026

Overview

Blythe regulates land use through its municipal zoning ordinance in Title 17 of the Blythe Municipal Code, adopted as the city’s “Comprehensive Zoning Ordinance.” The Blythe Zoning framework is map-based and supported by citywide development standards, parking, screening, and review procedures administered by the Planning Director, Planning Commission, and City Council. The official zoning map is maintained by the City Clerk, with changes recorded annually; uncertainties in map boundaries are resolved by prescribed rules and administrative interpretation.

How Blythe’s code is organized

Title 17 is structured so you can move from general rules to district maps, then into development standards and procedures:

• Division I, General Provisions and Definitions: purpose, title, and updated definitions (including accessory dwelling unit) in Chapters 17.02 and 17.04.
• Division II, Zones and Map: where all zones are designated (A, SPR, RR, R/MH, R-E, R-L-1, R-L-1-72, R-L-2, R-M-L, R-M, R-H, P-D, P/Q-P, C-N, C-C, C-G, C-M-O, I-S, I-G, D-O, HEO) and the official map is adopted and filed (Chapter 17.06).
• Use permissions: the master use table in Chapter 17.08 shows which uses are permitted by right or require a CUP; it also introduces the Housing Element Overlay (HEO) (17.08.020). See Blythe Land Use.
• Citywide development standards: minimum lot area/width/depth, coverage, height, density, floor area (Chapter 17.10); Blythe Development Standards.
• Setbacks and separation (Chapter 17.12); Blythe Landscaping and Screening and screening/fencing (Chapter 17.14); Blythe Parking, driveways, in‑lieu fees (Chapters 17.16 and 17.18).
• Special residential frameworks: condominiums (Chapter 17.32), Blythe ADUs (Chapter 17.33), SB 9 two‑unit/urban lot split standards (Chapter 17.33A), manufactured housing on lots (Chapter 17.38) and parks (Chapter 17.40).
• Specific plans and planned development (Chapter 17.36); overlays (e.g., D‑O Redevelopment Overlay in 17.06.060–.064). See Blythe Overlay Districts.
• Discretionary permits and relief: CUPs (Chapter 17.68), Blythe Variances and Exceptions (Chapter 17.70), interpretations and appeals (Chapter 17.76).
• Building permits and certificates of occupancy (Chapter 17.80); construction follows the California Building Standards Code.

Zoning district families

Blythe’s districts cluster into residential, commercial, industrial, and overlay/plan categories defined in Section 17.06.010:

• Residential and rural/agricultural: A, RR, R/MH, R‑E, R‑L‑1, R‑L‑1‑72, R‑L‑2, R‑M‑L, R‑M, R‑H. Examples: the RR zone allows one unit per 2.5 acres (no central services) up to one per 20,000 sq ft (with both central water and sewer), and includes specific animal‑keeping allowances; R/MH implements manufactured housing park patterns.
• Commercial: C‑N, C‑C, C‑G. The Chapter 17.08 use table clarifies retail, office, service and special uses by district.
• Industrial: I‑S (service) and I‑G (general). Height allowances for unmanned structures in these districts can be higher with a variance.
• Public/quasi‑public: P/Q‑P for civic/institutional sites.
• Overlay/special purpose: C‑M‑O (Commercial Manufacturing Overlay); D‑O (Redevelopment Overlay requiring design review conformity); HEO (Housing Element Overlay) making qualifying affordable residential projects a permitted use. See Blythe Overlay Districts.

Citywide development standards

Key numeric limits that commonly govern site plans citywide include:

• Minimum lot dimensions by zone. Examples: R‑E: 9,600 sq ft/75 ft width; R‑L‑1: 7,800 sq ft/65 ft; R‑L‑2: 6,000 sq ft/50 ft; R‑M‑L: 7,800 sq ft/65 ft; I‑S: 10,000 sq ft/75 ft; I‑G: 15,000 sq ft/100 ft.
• Lot coverage. Residential lots are capped at 40% ground‑floor coverage, except R‑M and R‑H which allow 50%.
• Building height. Single‑family homes max 2 stories; accessory structures max 18 ft; other buildings max 3 stories or 34 ft; unmanned structures in I‑S/I‑G up to 75 ft with a variance.
• Residential density. Examples: R‑M‑L up to roughly 7.1–11 du/ac; R‑M 11.1–14 du/ac; R‑H 14.1–29 du/ac.
• Minimum dwelling unit floor area. Examples: R‑E single‑family 1,250 sq ft; R‑L single‑family 800 sq ft; multifamily (e.g., R‑M) studios 350 sq ft, one‑bedroom 500 sq ft, two‑bedroom 600 sq ft.
• Residential setbacks (Chapter 17.12). Typical front setbacks: R‑R/R‑E/R‑L‑1: 25 ft; R‑L‑1‑72/R‑L‑2: 20 ft; R‑M‑L/R‑M/R‑H: 15 ft. Main buildings must be at least 5 ft from interior side lot lines (deeper in some cases); garages opening to a street must be 20 ft back; corner side yards are 5–10 ft depending on lot type. Accessory buildings can be at 0–3 ft with fire‑rated construction and location limits.
• Commercial/industrial setbacks (C‑N, C‑C, C‑G, I‑S, I‑G, P/Q‑P). Standards are generally 10 ft on street front/side, 5 ft street‑rear, and 0 ft at interior sides/rear; however, some districts (e.g., C‑C, C‑G, I‑S) allow no setback except on narrow lots or where abutting residential.
• Distance between buildings in residential zones. Facing walls with openings must be 3 ft apart; otherwise separation follows the adopted California Building Standards Code. Intersection visibility triangles prohibit obstructions above 3 ft.
• Parking. Detached single‑family requires 2 on‑site spaces; multifamily requires 1 space/unit for studios/1‑BR and 1.5 spaces/unit for 2+BR; tandem does not satisfy required residential spaces. Selected nonresidential ratios include retail/office at 1/250 sq ft and hotels/motels at 1/room. A fee‑in‑lieu option may substitute where on‑site provision isn’t feasible, calculated at 250 sq ft per space. See Blythe Parking.
• Screening/fencing. Residential screening materials and commercial/industrial wall/fence heights (e.g., 6–8 ft at shared residential boundaries, lower near streets) are prescribed; no screening over 3 ft within visibility triangles. See Blythe Landscaping and Screening.

Additional functional standards include residential building width minimums (20 ft) and limits on accessory structure size (not to exceed the primary unit’s ground floor, unless a variance is granted).

Note on FAR: a citywide floor‑area‑ratio standard is not identified in the retrieved code; Blythe relies primarily on lot coverage, height, setback, and density controls (verify with the jurisdiction).

Specific plans & overlays

• Specific Plans and Planned Development. Blythe can entitle large/complex areas through a Specific Plan (generally for sites >15 acres) or a P‑D Planned Development zone (parcels ≥1 acre). Under a P‑D, permitted uses default to R‑M‑L standards unless another base zone is specified at adoption; Specific Plans are adopted per Government Code §§ 65450 et seq.
• D‑O Redevelopment Overlay. Within D‑O, new or changed uses and exterior modifications require approval by the Design Review Committee for conformance with adopted downtown standards; underlying base zoning otherwise applies. See Blythe Design Review.
• HEO Housing Element Overlay. On HEO sites, a residential or mixed‑use project that dedicates at least 20% of units as lower‑income affordable (with 55‑year rental/45‑year ownership covenants) is a permitted use subject to the overlay’s objective criteria.
• C‑M‑O Commercial Manufacturing Overlay. Side‑yard setbacks on legal nonconforming lots in C‑M‑O may be varied to 0 ft by the Planning Director if specific findings and conditions are met.
• Flood Hazard Areas. Development in mapped special flood hazard areas requires a floodplain development permit with elevation/certification submittals, and construction must meet anchoring, elevation and floodproofing standards.
• Manufactured Housing. Manufactured housing parks require a CUP, must meet minimum area (5 acres) and setback standards, and file detailed plot/improvement plans. Separately, manufactured homes may be approved on individual lots subject to residential standards and Chapter 17.38.

Building permits & review

• Building permits and occupancy. A building permit is required for any new structure; applications must include a scaled site plan. A certificate of occupancy is required before any newly built/altered structure is used. See the California Building Standards Code for adopted construction standards.
• Conditional Use Permits (CUPs). CUPs are approved by the City Council for uses flagged in the use table or elsewhere in Title 17; residential units can be conditionally permitted in I‑S or C‑G if additional “compatibility” findings are made.
• Variances. Minor variances may adjust front/side/rear setbacks (e.g., side yards to 3 ft), lot width (up to 10%), and, in R‑E/R‑L‑1/R‑L‑2, side/rear setbacks may be adjusted up to 40% so long as buildable area and coverage caps are not exceeded; public notice and findings are required. See Blythe Variances and Exceptions.
• Design review. The D‑O overlay requires Design Review Committee approval; the code references Section 17.64.060 for committee establishment and procedures (not retrieved—verify triggers outside the D‑O area). See Blythe Design Review.
• Administrative interpretations and appeals. The Planning Director may issue written interpretations of Title 17, subject to Planning Commission review on request.

State housing law in Blythe

• ADUs and JADUs. Chapter 17.33 implements ministerial approvals consistent with state law. Among other pathways, Blythe allows:
  • One new detached ADU with at least 4‑ft side and rear setbacks on a lot with a single‑family home;
  • Internal ADUs/JADUs within existing or proposed space;
  • Multiple detached ADUs on multifamily lots with four‑foot setbacks;
  • A minimum rental term of 31 days for ADUs/JADUs; and no requirement to correct unrelated nonconforming conditions for ministerial approvals. See Blythe ADUs.
    State law also guarantees at least an 800 sq ft ADU with 4‑ft side/rear setbacks citywide, sets baseline/conditional height caps, and limits parking requirements under defined conditions. See California ADU law.
• SB 9 two‑unit/urban lot split. Chapter 17.33A limits what the city can require, prohibits standards that physically preclude two units or reduce unit size below 800 sq ft, requires a recorded affidavit on use and minimum 31‑day rentals, and sets health/safety denial findings; these provisions supersede contrary code sections.
• Density bonus. Chapter 17.30A establishes an application process coordinated with the housing development review and codifies regulatory agreement, unit timing, dispersion, parity of amenities, and other requirements, processed under the Housing Accountability Act timelines.
• Local rent rules. A citywide rent control ordinance was not found in the retrieved zoning materials; statewide tenant protections may apply. See California housing laws. Not found in retrieved materials.

Information Gaps

• Historic preservation and comprehensive sign controls were not included in the retrieved sections of Title 17. See Blythe Historic Preservation and Blythe Signage. Not found in retrieved materials—verify with the jurisdiction.
• Full Design Review procedures (Chapter 17.64) and any additional overlay/specific plan documents beyond 17.36 were not retrieved. Verify with the Planning Department.

Source References

• Title 17 purpose, organization, and map administration: §§ 17.02.010–.040; 17.06.020, 17.06.040–.050; interpretations and appeals: §§ 17.76.010–.020; building permits/CO: §§ 17.80.010–.030.
• Zones and descriptions; use table and HEO: §§ 17.06.010; 17.08.010; 17.08.020.
• Development standards: lot size/width/depth (§ 17.10.010), lot coverage (§ 17.10.015), height (§ 17.10.040), density (§ 17.10.050), floor area (§ 17.10.030), residential building width (§ 17.10.035), accessory building size (§ 17.10.031).
• Setbacks and separation: residential (§ 17.12.030), commercial/industrial (§ 17.12.040), visibility triangles (§ 17.12.050), building separation (§ 17.12.060).
• Screening/fencing (Chapter 17.14); parking and loading (Chapters 17.16 and 17.18).
• Specific plans and P‑D (Chapter 17.36); D‑O overlay (§§ 17.06.060–.064).
• ADUs/JADUs (Chapter 17.33) and SB 9 (Chapter 17.33A).
• Density bonus (Chapter 17.30A).
• Manufactured housing on lots (Chapter 17.38) and parks (Chapter 17.40).
• Flood hazard regulations (Chapter 17.29).
• State ADU baseline provisions and limits: California ADU law.