Calexico — Zoning

Last reviewed: July 1, 2026

Overview

Calexico's zoning is contained in Title 17 – ZONING of the Calexico municipal code and establishes the city's base zones, overlay/special zones, and the rule that the official zoning map governs where each zone applies. The code defines permitted and conditional uses by zone, basic development standards for special zones, and administrative processes for map changes, variances, and nonconforming uses. See the zones list in § 17.01.140 for the named districts and the requirement that the official map be kept on file. § 17.01.140 .

How Calexico organizes zoning

The code divides Calexico into Residential, Commercial, Industrial and Special Purpose zones; the official zoning map adopted with the code shows which parcels are in which zone and is the legal record. Changes to the map must be made by ordinance and updated on the official map § 17.01.140 . If a boundary or interpretation is ambiguous, the planning director starts an interpretation that goes to the planning commission and city council § 17.01.150 .

• The underlying list of base zones is adopted in § 17.01.140 (e.g., RR, R-1, RC, RA, CO, CN, CH, CS, I, IR, BP, MHP, PD, SP, A) § 17.01.140 .
• The official zoning map is the controlling map of zone boundaries and is kept with the City Clerk and Planning Department § 17.01.140(B–C) .

Where the page discusses related technical steps — parking, setbacks and other dimensional rules, and approvals — consult the linked topic pages for operational detail: Calexico's Development Standards, Parking, Design Review, and the Overlay Districts. For ADUs consult Calexico's ADU page and the statewide rules at the California Building Standards Code and California ADU law.

District-by-district breakdown

Note: The ordinance contains full use tables and many numerical standards across several chapters; below are the code-grounded purpose statements, the most decision-relevant permitted/conditional-use notes found in the ordinance, and the explicit dimensional rules available in the retrieved materials. Where the local code text in the materials does not list a numeric standard, the text below directs you to verify with the jurisdiction.

General (All Zones)

• Purpose: Establish classifications, regulate uses, yards, height, density, and map-based boundaries § 17.01.110 and § 17.01.140 .
• Official map: The "official zoning map" is adopted with the code and kept on file with the City Clerk and Planning Department; map changes require ordinance action § 17.01.140(B–D) .
• Ambiguity: Planning director interprets ambiguous boundaries/standards and forwards recommendations to the commission and council § 17.01.150 .

RR — Residential Rural Zone

• Purpose: Rural/residential uses (listed as a base residential zone in the zones list) § 17.01.140 .
• Typical permitted uses: The code groups RR in the Residential category; specific permitted uses and dimensional standards for RR are in the R-zone articles (refer to the zoning tables in the code). Verify permitted use table for RR in the zoning code. Not all numeric R-zone standards were present in the retrieved material; Verify with the jurisdiction. § 17.01.140 .

R-1 — Residential Single-Family Zone

• Purpose: Single-family residential development (listed under Residential Zones) § 17.01.140 .
• Typical permitted uses: Single-family dwellings and accessory structures; ADUs governed by the ADU rules § 17.03.200 .
• Key dimensional/other controls shown in R-zone articles: wall/fence height limits for R zones and ADU-specific provisions are included (e.g., walls/fences in front/street-side yards limitations in § 17.03.150; ADU conformity rules in § 17.03.200) .
• Where it applies: See official zoning map § 17.01.140 .

RC — Residential Condominium Zone and RA — Residential Apartment Zone

• Purpose: Multi-family/condominium/apartment residential forms (listed as Residential Zones) § 17.01.140 .
• Typical permitted uses: Multi-family residential and related accessory uses. Specific permitted/conditional use lists and numeric density or lot-area rules are in the R-zone tables in the code (not fully reproduced in retrieved snippets). Verify specific density and setback numbers with the planning department. § 17.01.140 .

CO — Commercial Office; CN — Commercial Neighborhood; CH — Commercial Highway; CS — Commercial Specialty

• Purpose: Various commercial intensities — office, neighborhood retail/services, highway-oriented commercial, and specialty commercial § 17.01.140 .
• Typical permitted uses: Uses are assigned by commercial zone; for signage and outdoor display rules the code refers to Chapter provisions (e.g., restrictions on outdoor display in § 17.11.920 and sign policies in Article XI) .
• Key controls to check: Off-street parking requirement must follow Chapter 17.13 (see Parking); outdoor display prohibited in most zones except enumerated exceptions § 17.11.920 .

I — Industrial; IR — Industrial Rail-Served; BP — Business Park

• Purpose: Industrial/manufacturing and rail-served/park-style industrial uses § 17.01.140 .
• Typical permitted uses: Industrial uses as defined in the code. Industrial zones restrict certain signs and have specific yard/fence rules (see § 17.07.160 regarding signs/walls in I zones) .
• Parking: Off-street parking required per Chapter 17.13 § 17.09.440 .

MHP — Mobilehome Park Zone

• Purpose: For exclusive development of mobilehome parks § 17.09.110 .
• Permitted/conditional uses: The code lists specific permitted uses for MHP (e.g., single-family caretakers, mobilehome condominiums, RV parks as conditional) and accessory uses; see the MHP use table § 17.09.120 .
• Property development standards: There is a dedicated MHP standards article; these are minimums and can be supplemented by planning commission conditions § 17.09.130 .

PD — Planned Development Overlay Zone (overlay)

• Purpose: Provide greater flexibility to encourage creative site design and mixed uses where designated § 17.09.210 .
• Uses: Planned developments allowed subject to a conditional use permit; PD may use permitted/conditional uses from the underlying R, C, and I zones § 17.09.220 .
• Key property standards (minimum unless otherwise stated): front yard 10 ft, side yard 5 ft, street side yard 10 ft, rear yard 10 ft, maximum height 35 ft or 2 stories generally (with up to 50 ft / 4 stories allowed within 50 ft of exterior PD boundary under limited conditions), maximum site coverage 50% or maximum per zone (whichever is greater) § 17.09.230 .
• Where it applies: PD is an overlay shown on the zoning map and implemented by development plan and ordinance § 17.09.210–230 .
• Note: PD is an overlay — see the city's Overlay Districts.

SP — Specific Plan Overlay Zone

• Purpose: For large, phased, comprehensively planned communities; SP zones are established by development plan and council adoption § 17.09.310 .
• Uses and standards: Allowable uses and standards are determined by the adopted development plan text; existing uses at establishment are incorporated unless the plan says otherwise § 17.09.320 .
• Minimum area: Generally 50 contiguous acres (council may reduce this) § 17.09.330 .
• Where it applies: Indicated on zoning map with letters "SP" after the base zone § 17.09.370(B) .

A — Agriculture Zone

• Purpose: Preserve agricultural uses (listed as a Special Purpose Zone) § 17.01.140 .
• Typical permitted uses: Agricultural operations, horticulture, and related accessory structures; utility/public facilities may be subject to conditional-use review depending on the zone text. Specific agricultural use details are in the A-zone article (verify for numeric setbacks/lot sizes). § 17.01.140 .

OS — Open Space Zone

• Purpose: Protect open space for recreation, hazards (flood, fire, geologic) and natural resource protection § 17.09.510 .
• Permitted uses: The code lists uses with P/C/X designations (e.g., single-family dwellings at extremely low density—"not to exceed a density of 1 unit per 40 acres"—and many open-space/recreation uses allowed) § 17.09.520 .
• Key rules: Specific allowed forms and exceptions are tabulated in § 17.09.520; accessory structures related to a permitted dwelling are generally allowed § 17.09.520 .

Quick reference table — Decision-relevant zones/standards

Checklist

• Confirm the property's base zone on the official zoning map and obtain the map copy from the City Clerk/Planning Dept § 17.01.140 .
• Check whether the parcel is inside any overlay (PD, SP, MHP, OS) and review that overlay's development plan/standards (see § 17.09.210–370) .
• Determine permitted vs. conditional uses for the base zone (consult the zone-specific use table in Title 17). Verify whether proposed use needs a CUP, variance, or change-of-zone § 17.01.610–630 .
• Confirm dimensional standards: setbacks, height limits, lot coverage for the applicable zone or overlay (e.g., PD standards § 17.09.230) .
• Check ADU standards if adding an accessory unit — they have their own section and override some density concerns § 17.03.200 .
• Verify off-street parking requirements in Chapter 17.13 (see the city's Parking) and review sign rules in Article XI (see Signage) § 17.09.440 .
• For ambiguities, ask the Planning Director (interpretations go to Planning Commission and Council) § 17.01.150 .
• If relying on an exception (variance, PD, SP), prepare the specific findings and site plans required by the code (see variance application content and SP/PD plan submittal requirements) § 17.01.615; 17.09.360 .

Risks & Ambiguities

Plain-English Summary

Calexico's Title 17 divides the city into specific base zones (e.g., R-1, CN, I) and overlays (e.g., PD, SP, MHP, OS), with an official zoning map that legally locates each parcel in a zone; some overlays (PD, SP) use their own development plans and numeric deviations from base zones. For numeric limits and exact permitted uses, start with the official zoning map and the zone’s use table; if anything is unclear, the planning director issues formal interpretations that go to the commission and council § 17.01.140; § 17.01.150 .

Source References

• Title 17 — ZONING, Calexico Municipal Code: Zones list, official map rules § 17.01.140
• Planned Development (PD) purpose, uses and standards § 17.09.210–230
• Specific Plan (SP) purpose, uses and standards § 17.09.310–370
• Mobilehome Park (MHP) purpose, uses and standards § 17.09.110–130
• Open Space (OS) zone purpose and allowed uses § 17.09.510–520
• ADUs (Accessory Dwelling Units) regulations § 17.03.200
• Variances—authorization, application, and findings § 17.01.610–630
• Lot coverage / yard exceptions § 17.01.1000
• Outdoor display of merchandise rules (exceptions list) § 17.11.920–930
• Clarification of ambiguities and administrative interpretation § 17.01.150

Retrieved passages

• Calexico Zoning Code (§ 1) High relevance show source text
• Calexico Zoning Code (Title 17) High relevance show source text
• Calexico Zoning Code (Chapter 17.01) High relevance show source text
• Calexico Zoning Code (§ 2) Medium relevance show source text
• Calexico Zoning Code (article shall) Medium relevance show source text
• Calexico Zoning Code (Section 17.01.630) Medium relevance show source text
• Calexico Zoning Code (Chapter 17.01) Medium relevance show source text
• Calexico Zoning Code (Section 17.11.110) Medium relevance show source text

Cited sections

• Title 17 — ZONING, Calexico Municipal Code: Zones list, official map rules **§ 17.01.140** (Title 17)
• Planned Development (PD) purpose, uses and standards **§ 17.09.210–230** (§ 17.09.210)
• Specific Plan (SP) purpose, uses and standards **§ 17.09.310–370** (§ 17.09.310)
• Mobilehome Park (MHP) purpose, uses and standards **§ 17.09.110–130** (§ 17.09.110)
• Open Space (OS) zone purpose and allowed uses **§ 17.09.510–520** (§ 17.09.510)
• ADUs (Accessory Dwelling Units) regulations **§ 17.03.200** (§ 17.03.200)
• Variances—authorization, application, and findings **§ 17.01.610–630** fileciteturn0file4turn0file5 (§ 17.01.610)
• Lot coverage / yard exceptions **§ 17.01.1000** (§ 17.01.1000)
• Outdoor display of merchandise rules (exceptions list) **§ 17.11.920–930** (§ 17.11.920)
• Clarification of ambiguities and administrative interpretation **§ 17.01.150** (§ 17.01.150)
• Calexico_ZoningCode.md

• Official Calexico code library