Chino — Overlay Districts

Last reviewed: July 1, 2026

Overview

Chino’s overlay districts are special layers of zoning rules that sit on top of the base zones (RD, CG, BP, etc.) and add area‑specific standards, allowed uses, or restrictions to address local conditions like airport overflight, downtown form, agriculture preservation, and affordable housing incentives. The overlay program and basic rules are collected in Chapter 20.09 of the Chino Zoning Code; applicability and conflict rules are set out at § 20.09.010, § 20.09.020, and § 20.09.030.

Note: check the official zoning map to confirm whether a particular parcel carries one or more overlays (zoning map boundaries and overlay placement are established by ordinance and map amendments). Verify parcel-specific overlay boundaries with the city.

(For quick orientation on how overlays interact with base districts, see the city’s Chino Zoning and the Chino Development Standards pages.)

How this page is organized

Below you’ll find a district‑by‑district breakdown. Each district subsection states the local name as used in the code (bolded), the stated purpose from the ordinance, the typical permitted uses (summary), the most decision‑relevant dimensional or procedural rules, and where it applies or how it’s mapped. Every requirement below cites the Chino zoning code section that controls; cite numbers use the code’s § format and the retrieved file citation.

Overlay district summaries (district‑by‑district)

Affordable Housing Overlay (AHO) and Mixed‑Use Overlay (MUO)

• Purpose: Promote affordable housing and mixed‑use housing projects at higher densities when affordability commitments are provided; AHO is for standalone affordable housing, MUO supports mixed‑use with affordable units. See § 20.09.090(A).
• Typical permitted uses: The overlays allow residential uses (including multiple‑family dwellings and senior housing) in addition to the base zone uses for qualifying housing projects; they also allow accessory dwelling units consistent with the ADU rules. See § 20.09.090(C) and Table 20.09‑4.
  • The code explicitly lists Accessory Dwelling Units as permitted (P) with reference to § 20.11.020; see the Chino ADUs resource for program details.
• Key standards and limits:
  • Rental projects: typical maximum density is 26 dwelling units per adjusted gross acre unless additional density is earned by deeper affordability or state law allowances. § 20.09.090(D)(1)(a).
  • For‑sale projects: up to 30 DU/acre if at least 3% of units are sold to moderate‑income buyers at an affordable price. § 20.09.090(D)(1)(b).
  • The AHO/MUO rules supersede base zoning when a housing project is proposed; they do not change the base zone for purely non‑residential proposals — see § 20.09.090(B).
• Where it applies: Specific parcels and sites are identified in the Housing Element overlay strategy and on the zoning map (see ordinance adopting map amendments). The city’s AHO/MUO rules include administrative checklists and objective standards for streamlined review when projects meet affordability requirements. § 20.09.090(E) and related subsections.

Practical guidance: If you intend to use the AHO/MUO incentives, build your proforma and affordability commitment into the entitlement submittal. Expect the city to require deed restrictions/agreements and potentially in‑lieu fees or land dedications if alternatives are proposed; see the in‑lieu fee and land dedication rules in § 20.09.090.

Agricultural Overlay (AO)

• Purpose: Preserve and allow continuation of agricultural uses (especially parcels that were under Williamson Act at annexation) while the land remains in agricultural use prior to any future transition to its base zone. § 20.09.040(A).
• Typical permitted uses: Properties in the AO may be used consistent with the AG zone in addition to the base zoning on unimproved/underdeveloped/vacant properties; expansion of uses remains subject to the underlying base zoning requirements. § 20.09.040(B).
• Key standards: The AO is primarily a use/intent overlay — it does not replace base district setbacks or numeric density limits but allows agricultural practices and AG zone uses where appropriate; expansions must still comply with the underlying district rules. § 20.09.040(B).
• Where it applies: Parcels shown on the zoning map and/or parcels with specified annexation history. Owners should verify whether the AO applies by reviewing the official zoning map or contacting the city. § 20.09.040.

Practical guidance: If your lot is AO, check applicable equipment, animal‑keeping, and accessory structure rules in the AG and residential chapters and the city’s Chino Land Use pages before seeking building permits.

Airport Overlay (A)

• Purpose: Implement the Chino Airport Comprehensive Land Use Plan (ACLUP), identify high‑noise or safety impact areas, and regulate uses inside the overflight/safety zones. § 20.09.050(A)(1–3).
• Typical permitted uses: Uses allowed must be acceptable under both the base zoning and the airport overlay compatibility table; certain sensitive uses are restricted in safety zones I and II (e.g., residential, hospitals, schools are “clearly unacceptable” in those zones). See Table 20.09‑1 and § 20.09.050(B)(1).
• Key standards and requirements:
  • Land use compatibility is controlled by the ACLUP noise/safety contours and Table 20.09‑1; follow the table for acceptability in each aviation safety zone. § 20.09.050(C) and Table 20.09‑1.
  • For development within the 65 CNEL contour, projects and permits must have a recorded noise‑impact notification (an avigation/notice recorded against the deed). § 20.09.050(C).
  • Objects affecting navigable airspace are subject to FAR Part 77 review as noted in the overlay. § 20.09.050(D).
• Where it applies: The overlay boundaries follow the ACLUP noise/aviation safety zones and are shown on the zoning map. Confirm via the zoning map and ACLUP maps. § 20.09.050(A).

Practical guidance: For projects near Chino Airport, budget for the required recorded notices, expect stricter scrutiny for residential and sensitive uses, and include noise‑attenuation measures in the design (coordinate early with airport/Planning). See the city’s Chino Design Review guidance for architectural and noise‑compatible design practices.

Downtown Overlay (DO)

• Purpose: Create a pedestrian‑friendly, urban downtown form and promote high‑quality urban design in visible parts of the city. § 20.09.060(A).
• Typical permitted uses: Base zone uses continue to apply; the DO focuses on form, siting, and development standards for residentially zoned properties in downtown. § 20.09.060(B).
• Key dimensional standards (Table 20.09‑3 — residentially zoned properties in DO):
  • Minimum lot area: 4,500 sq ft
  • Minimum lot width: 50 ft
  • Minimum lot depth: 90 ft
  • Maximum density: 8 DU/acre
  • Maximum lot coverage: 45%
  • Maximum floor area ratio: 0.55
  • Primary dwelling parking: 2 garage spaces (see Chapter 20.18 parking rules)
    These standards appear in § 20.09.060(B) and Table 20.09‑3.
• Where it applies: Properties mapped within the Downtown Overlay on the zoning map; note special frontage/build‑to requirements on key streets (e.g., Riverside Drive and Central Avenue have stricter build‑to expectations in mixed‑use areas — see related development standards). § 20.09.060(B) and related build‑to rules in Chapter 20.04/20.09.

Practical guidance: Downtown projects should cross‑check DO requirements with the city’s Chino Parking standards and Chino Development Standards for parking counts, setbacks, and frontage/build‑to rules.

Industrial Planned Development Overlay (IPD Overlay)

• Purpose: Offer flexibility to achieve superior industrial development design and site planning compared with strict application of base industrial district standards. § 20.09.080(A).
• Typical permitted uses: Uses generally follow the base industrial zoning, but the planning commission/city council may limit or add uses (especially for mixed‑use projects) to ensure compatibility and higher design quality. § 20.09.080(B).
• Key procedures/standards:
  • Establishment or modification of an industrial planned development overlay requires a zone change and a master plan submittal; modifications to existing IPD require a special conditional use permit under § 20.23.080. § 20.09.080(C).
  • The overlay allows the commission/council to craft site‑specific standards (setbacks, parking, landscaping) that may deviate from base district numeric standards when findings are made. § 20.09.080(A–C).
• Where it applies: Applied to industrial project sites by ordinance/zone change and mapped on the zoning map. Confirm via the official zoning map and any master plan exhibits required by the IPD ordinance. § 20.09.080.

Practical guidance: For industrial developers, expect a required master plan, possible design conditions, and a public hearing path (planning commission and city council) for overlay establishment or substantial modification. See the city’s Chino Design Review and Chino Landscaping and Screening pages for typical expectations.

Quick comparison table — most decision‑relevant standards / permissions

Checklist

• Confirm whether your parcel carries an overlay on the official zoning map (verify with the city). (Verify: zoning map / Planning counter). § 20.09.020.
• Identify which overlay(s) apply (AHO, MUO, AO, A, DO, IPD, etc.) and read the controlling § for each overlay listed above. Table 20.03‑2 and Chapter 20.09.
• For Airport Overlay projects: prepare noise/aviation analysis as required by the ACLUP and plan to record the required avigation/noise notice if inside the 65 CNEL or safety zones. § 20.09.050(C).
• For AHO/MUO housing projects: document affordability commitments, density calculations, and expected in‑lieu fees or land dedication proposals; include deed restrictions. § 20.09.090(D–E).
• For Industrial PD overlay proposals: assemble a master plan and be prepared for a zone change or special conditional use permit with findings per § 20.23.060 and § 20.23.080. § 20.09.080(C).
• Cross‑check overlay numeric rules with base district standards (setbacks, parking, FAR). Overlays control where they conflict; otherwise base district standards apply. § 20.09.030.
• Coordinate parking counts and layout with Chapter 20.18 (Chino Parking) and any special downtown requirements in Table 20.09‑3.
• If your design will affect navigable airspace, confirm FAA FAR Part 77 procedures early. § 20.09.050(D).

Risks & Ambiguities

Plain‑English summary

Chino’s overlays (Affordable Housing, Mixed‑Use, Agricultural, Airport, Downtown, and Industrial PD overlays) are extra, location‑specific rules layered on top of your base zoning. They can change allowable uses, increase allowable housing density (if you commit to affordability), require recorded noise/aviation notices near the airport, or impose downtown design and lot standards — check the overlay text in Chapter 20.09 and the official zoning map for parcel applicability before designing a project. § 20.09.010–.090.

Source References

• Chino Zoning Code, Chapter 20.09 — Overlay Districts: § 20.09.010, § 20.09.020, § 20.09.030.
• Chino Zoning Code — Agricultural Overlay: § 20.09.040.
• Chino Zoning Code — Airport Overlay: § 20.09.050, Table 20.09‑1 (Airport Land Use Compatibility).
• Chino Zoning Code — Downtown Overlay: § 20.09.060, Table 20.09‑3 (Development Regulations for Residential Properties).
• Chino Zoning Code — Industrial Planned Development Overlay: § 20.09.080.
• Chino Zoning Code — Affordable Housing Overlay and Mixed‑Use Overlay: § 20.09.090, Table 20.09‑4.
• Table of Overlay Zoning Districts (Table 20.03‑2) and zoning map notes (see zoning map ordinances).

Retrieved passages

• Chino Zoning Code (SECTION 18) High relevance show source text
• Chino Zoning Code (§ 1) High relevance show source text
• Chino Zoning Code (§ 1) High relevance show source text
• Chino Zoning Code (§ 1) High relevance show source text
• Chino Zoning Code (§ 1) High relevance show source text
• Chino Zoning Code (§ 1) High relevance show source text
• Chino Zoning Code (SECTION 35) High relevance show source text
• Chino Zoning Code (§ 1) High relevance show source text

Cited sections

• Chino Zoning Code, Chapter 20.09 — Overlay Districts: **§ 20.09.010**, **§ 20.09.020**, **§ 20.09.030**. (Chapter 20.09)
• Chino Zoning Code — **Agricultural Overlay**: **§ 20.09.040**. (§ 20.09.040)
• Chino Zoning Code — **Airport Overlay**: **§ 20.09.050**, Table 20.09‑1 (Airport Land Use Compatibility). (§ 20.09.050)
• Chino Zoning Code — **Downtown Overlay**: **§ 20.09.060**, Table 20.09‑3 (Development Regulations for Residential Properties). (§ 20.09.060)
• Chino Zoning Code — **Industrial Planned Development Overlay**: **§ 20.09.080**. (§ 20.09.080)
• Chino Zoning Code — **Affordable Housing Overlay and Mixed‑Use Overlay**: **§ 20.09.090**, Table 20.09‑4. (§ 20.09.090)
• Table of Overlay Zoning Districts (Table 20.03‑2) and zoning map notes (see zoning map ordinances).
• Chino_ZoningCode.md

• Official Chino code library