Chino Hills Zoning, Planning & Building Codes

Last reviewed: July 25, 2026 · AI-generated overview · General information, not legal advice · detailsless

Compiled with AI research tools from official sources. Verify with the jurisdiction.

Overview

Chino Hills regulates land use through its municipal Development Code, codified as Title 16 of the Municipal Code. The code maps the city into residential, commercial, mixed-use, industrial, institutional, open-space, planned development, and overlay districts, and then layers in citywide standards for site planning, hillside protection, landscaping, and objective residential design. Overlay districts—especially hillside, fire safety, scenic, and equestrian—meaningfully shape where and how projects are built. Parking, design review, and ADU rules reference state law and contain several Chino Hills‑specific twists.

The single most consequential local carve‑out is the ADU Ineligibility Overlay: most of Carbon Canyon is ineligible for ADUs and JADUs unless the lot directly fronts Carbon Canyon Road, has direct driveway access to it, and can park entirely on-site (§ 16.10.140(G)).

How Chino Hills’s code is organized

Here’s where the major rules live in Title 16 so you can navigate quickly:

• District map and district list: the official Zoning Map is adopted by reference; the city’s base and overlay districts are established in § 16.04.020 and § 16.04.010.
• Residential districts and baseline design: district purposes and density ranges in § 16.10.010; minimum residential design standards (unit size, materials, buffers, single‑story mix) in § 16.10.040.
• Commercial/industrial standards: commercial standards are compiled in Chapter 16.12 (Table 25‑1 cited at § 16.12.040); Business Park and Light Industrial standards (setbacks, height, FAR, landscaping) are detailed in § 16.14.040 (Table 30‑1).
• Housing Priority Zoning Districts: MDH, UHDH, VHDH, MUH districts, with objective standards and linked parking rules, in § 16.15.030–§ 16.15.040.
• Citywide development standards: how to identify front lots and apply setbacks in § 16.06.040–§ 16.06.050; landscaping in § 16.06.110 and Chapter 16.07; fences/walls in § 16.06.120.
• Hillside protections: hillside adaptive building envelopes and clustering in § 16.08.050; architectural guidelines in § 16.08.060; hillside open space set‑asides in § 16.08.070.
• Overlays and special areas: Equestrian & Large Animal Overlay in Chapter 16.33; Scenic Resources Overlay in Chapter 16.30; Small Lot Overlay in Chapter 16.32; Fire Safety/Fire Hazard overlays are referenced throughout (e.g., § 16.10.040(E); § 16.10.140(F)).
• Planned Development (PD): where a PD governs, consult the PD file list (§ 16.20.020) and PD standards (§ 16.20.050); PD residential design review is in § 16.20.090.
• ADUs/JADUs: comprehensive, state‑aligned local regulations and the ADU Ineligibility Overlay in § 16.10.140.
• Specific plans: procedures and authority in § 16.64.010.

For related topics, see Chino Hills Zoning, Chino Hills Land Use, and Chino Hills Development Standards.

Zoning district families

Chino Hills uses a broad matrix of base and overlay districts (§ 16.04.010):

• Residential
  • R-A (Agriculture–Ranch): large‑lot residential with agriculture; 5 acres min lot; up to 0.2 du/ac; equestrian and stables allowed as accessory (§ 16.10.010(B)(1)).
  • R-R (Rural Residential): single‑family; 0.5 acre min lot; up to 2 du/ac (§ 16.10.010(B)(2)).
  • R-S (Low Density Residential): single‑family; up to 6 du/ac plus mapped sub‑districts (R‑S‑1 through R‑S‑9) with specific maximum densities by tract (e.g., 2.3 du/ac in R‑S‑1, 6.63 du/ac in R‑S‑6) (§ 16.10.010(B)(3)(a–j)).
  • Multifamily: RM‑1 (Medium Density, up to 12 du/ac); RM‑2 (High Density, up to 25 du/ac; RM‑2.1 14.5 du/ac; RM‑2.2 13.5 du/ac); RM‑3 (Very High Density) (§ 16.10.010(B)(4–6)).
  • Housing Priority districts: MDH, UHDH, VHDH, and MUH created to implement the Housing Element; each has objective standards (§ 16.15.030–§ 16.15.040).
• Commercial and mixed use
  • C‑N (Neighborhood Commercial), C‑F (Freeway Commercial), C‑O (Commercial Office), C‑G (General Commercial), C‑R (Commercial Recreation), and MU (Mixed Use) (§ 16.04.010; standards compiled per § 16.12.040).
• Employment/industrial
  • BP (Business Park) and LI (Light Industrial) with consolidated standards in Table 30‑1 (§ 16.14.040).
• Institutional/open space
  • I‑1 (Institutional—Private), I‑2 (Institutional—Public), OS‑1 (Private Open Space), OS‑2 (Public Open Space), PP (Public Park), and a mapped State Park overlay for information only (§ 16.18.010; § 16.04.010).
• Flexible/entitlement‑based
  • PD (Planned Development): PD files establish the controlling standards; where silent, the closest base district applies (§ 16.20.020; § 16.20.050).
• Overlays (selected)
  • FR1/FR2 (Fire Safety Overlays), GH (Geologic Hazard), BR (Biotic Resources), SR (Scenic Resources), SL (Small Lot) (§ 16.04.010).
  • Equestrian & Large Animal Overlay with mapped categories (Level 1, Level 2, Level 3, Bayberry, Boys Republic) and location‑specific keeping standards (§ 16.33.010–§ 16.33.020).

Citywide development standards

Key citywide rules that often control site design across districts:

• Front lot lines and setbacks
  • How the “front” is determined on corner, through, or multi‑frontage lots varies by use; for single‑family, the front usually faces the lower‑classification street (§ 16.06.040(A)); multi‑family/nonresidential typically face the higher‑classification street (§ 16.06.040(B)).
  • Through lots must keep a minimum 20 ft setback on both frontages; “key lots” must match the average front yard depth on the block, with garages at least 20 ft back (§ 16.06.050).
• Fences, walls, and hedges
  • Single‑family front yards: 4 ft max (up to 6 ft with a minor exception and open/transparent top portion); sides/rear 6 ft; nonresidential front yard fences up to 6 ft if open/transparent; sides/rear 9 ft max (§ 16.06.120(A), (C)).
  • Retaining walls on prominent knolls/ridgelines and in Carbon Canyon are generally capped at 4 ft, with limited increases by minor variance depending on visibility (§ 16.06.120(B)(1)).
• Landscaping and water efficiency
  • Projects must follow the City’s Landscape Manual (§ 16.06.110) and the water‑efficient landscape program adopted under state law (Chapter 16.07; purpose and definitions at § 16.07.010–§ 16.07.020), including MAWA/ETWU‑based design.
• Hillside adaptive development
  • Hillside projects must cluster, adapt to slope (no terraced flat‑pad construction on slopes steeper than 15%), and respect building envelopes that start at 10 ft front setbacks with height planes stepping back at 45°; max structure heights vary by lot orientation (e.g., downhill lots up to 25 ft, uphill to 35 ft) (§ 16.08.050(B)(2–6)).
  • Architecture should split pads, step foundations, and use earth‑tone materials to blend with terrain (§ 16.08.060).
• Residential minimums and streetscape
  • Minimum dwelling size is 750 sf; Class “A” roofing required; perimeter 15 ft landscaped buffer along arterials/collectors where homes don’t front the street; at least 10% of units in single‑family subdivisions must be single‑story unless waived by the Planning Commission (§ 16.10.040(A), (C), (H), (I)).

Parking is administered in the code’s parking chapter; the Housing Priority zoning tables expressly defer to the citywide rules in § 16.34.060 for residential parking (§ 16.15.040(A)(3)(M), (B)(3)(L)).

Selected district standards that commonly drive feasibility

• Housing Priority Zones
  • MDH: min 9 du/ac, max 12.5 du/ac; 42 ft height; 55% lot coverage; front 25 ft; landscape 15%; private open space 70 sf/unit; common 300 sf/unit; parking per § 16.34.060 (§ 16.15.040(A)(3), Table 1).
  • UHDH: min 30 du/ac, max 93 du/ac; 70 ft to roofline (80 ft to architectural features); FAR 2.25; street‑side setbacks down to 0–5 ft on key frontages; landscape 15%; parking: studios/1‑bed 1.0/unit; 2–3 bed 2.0/unit; guest 0.25/unit or per shared‑parking analysis (§ 16.15.040(B)(3), Table 2).
  • VHDH: min 20 du/ac, max 30 du/ac; height 42–60 ft depending on adjacency; coverage 70%; corridor‑specific setbacks on Eucalyptus, Peyton, Country Club (§ 16.15.040(C)(3), Table 3).
• Employment zones
  • BP/LI: min lot 10,000 sf; front setback 25 ft to building (15 ft to parking); street‑side 20 ft; other sides 10 ft; rear 40 ft when abutting residential (may be reduced to 0 ft with city/fire approval); at least 15% site landscaping and 5% parking‑lot landscaping; no maximum height or FAR if parking/landscape are met (§ 16.14.040, Table 30‑1).

Specific plans & overlays

• Equestrian & Large Animal Overlay (citywide mapped pockets)
  • Five categories—Level 1, Level 2, Level 3, Bayberry, Boys Republic—with different allowances for animal keeping, boarding, and grazing tied to location and lot size; the overlay’s purpose is to preserve the city’s equestrian heritage while managing environmental and water‑quality impacts (§ 16.33.010–§ 16.33.020).
• Fire, geologic, biotic, scenic, and small‑lot overlays
  • Broad environmental overlays—FR1/FR2, GH, BR, SR, SL—apply where mapped; they influence setbacks, heights, materials, and separation standards (see § 16.04.010; fire‑related requirements are also referenced in § 16.10.040(E) and § 16.10.140(F)). For overlay navigation, see Chino Hills Overlay Districts.
• ADU Ineligibility Overlay
  • A city‑adopted overlay that restricts ADUs/JADUs in most of Carbon Canyon, with a narrow exception for parcels fronting and accessing Carbon Canyon Road and meeting on‑site parking sufficiency (§ 16.10.140(G)).
• Planned Development (PD) areas
  • PDs such as Oak Tree Downs, Payne Ranch, Rolling Ridge, Butterfield Ranch, and others are listed on the map and in § 16.20.020; the PD file approved by City Council sets the controlling setbacks, heights, and uses. If the PD is silent on a standard, the closest base district rules apply (§ 16.20.050). PD residential projects are subject to dedicated design review (§ 16.20.090).
• Scenic and hillside overlays
  • Carbon Canyon and ridgelines have tight hillside/adaptive standards and grading limits; grading guidelines (rounding slopes, variable contours, height stepping) are enforced in review (§ 16.50.040; § 16.08.050–§ 16.08.060; Chapter 16.30).

Building permits & review

• Industrial and employment projects
  • New buildings in BP/LI require a Site Plan Approval under Chapter 16.76 before building permits (§ 16.14.030).
• Residential design review
  • Citywide single‑family detached subdivisions are subject to objective minimum design standards; the Planning Commission uses Residential Design Guidelines as flexible, non‑mandatory objectives during design review (§ 16.10.040; § 16.10.050).
  • In PD areas, residential projects require Planning Commission design review before building permits; certain model/production home streamlining applies once prototypes are approved (§ 16.20.090(B), (C)).
• Minor relief
  • Fence/wall increases in front yards may be approved as a minor exception (Chapter 16.73) if open/transparent above three feet (§ 16.06.120(C)(3)). Height increases for certain retaining walls in sensitive areas require a minor variance (Chapter 16.72) (§ 16.06.120(B)(1)).
• Building codes
  • All construction must also meet the state California Building Standards Code; for example, Class “A” roofing is required for dwellings (§ 16.10.040(C)). ADU permits on a parcel with a new primary unit cannot be issued before the primary’s permit is issued (§ 16.10.140(H)(1)(a)).

State housing law in Chino Hills

• ADUs and JADUs (local adoption of state mandates)
  • Entitlements don’t count toward density; ADUs/JADUs can’t be sold separately; rentals must be >30 days; JADUs require owner occupancy in either the JADU or primary home (§ 16.10.140(A)–(D)).
  • Objective standards govern many ADU types, and for multifamily ADUs those objective standards—plus those in Government Code 66323—are the only applicable development/design standards (§ 16.10.140(H)(4)).
  • Typical by‑right ADUs: one detached ADU up to 800 sf and 18 ft high with 4 ft side/rear setbacks on single‑family lots; or one internal ADU/JADU within existing space; on multifamily lots, up to 25% of units as internal ADUs and up to 8 detached ADUs (not exceeding existing unit count), each 18 ft high with 4 ft side/rear setbacks (§ 16.10.140(H)(1)–(3)).
  • Size floors and caps: minimum 220 sf; max 850 sf (studios/1‑bed) or 1,000 sf (>1 bed); attached ADUs over 800 sf also capped at 50% of the primary’s floor area (§ 16.10.140(I)–(J)).
  • Fire areas: ADUs must meet Fire Hazard Overlay requirements and building separation standards (§ 16.10.140(E)–(F)).
  • Carbon Canyon carve‑out: ADUs/JADUs are ineligible within the mapped overlay unless the three criteria in § 16.10.140(G)(1–3) are all met.
• Housing Priority Zoning Districts (Housing Element implementation)
  • The city assigns minimum densities on designated sites (e.g., MDH ≥9 du/ac, UHDH ≥30 du/ac, VHDH ≥20 du/ac) with objective development standards and links to parking standards in § 16.34.060 (§ 16.15.040).
• Other state housing tools
  • Density bonus, SB 9 urban lot splits/duplexes, objective design standards for mixed‑use and multifamily, and tenant protections are not detailed in the provided source materials. Verify how Chino Hills administers these statewide programs with the City. For statewide context, see California housing laws and California ADU law.

Information Gaps

• Commercial zone dimensional standards (Table 25‑1) are referenced but not included in the source materials (§ 16.12.040). Confirm front/side/rear setbacks, heights, and coverage for each commercial district with the City.
• Citywide parking ratios and design standards are referenced but not provided (§ 16.15.040 referring to § 16.34.060). Consult the parking chapter for exact counts and dimensions.
• Fire Hazard/Safety Overlay detailed standards (Chapter 16.22) are referenced in multiple sections but not provided. Confirm any heightened construction/separation standards in mapped fire areas.
• Scenic Resources Overlay (Chapter 16.30) and Small Lot Overlay (Chapter 16.32) implementation standards are named but not included here—obtain the operative criteria from those chapters.
• Specific Plan documents (Chapter 16.64) and PD files control on a site‑by‑site basis and must be pulled from Community Development (§ 16.20.020(B)).

Source References

• Chino Hills Municipal Code Title 16 (Development Code): Zoning Map adoption (§ 16.04.020) and districts (§ 16.04.010). https://library.municode.com/ca/chino_hills/codes/code_of_ordinances
• Residential districts and densities (§ 16.10.010); minimum residential design standards (§ 16.10.040); Residential Design Guidelines administration (§ 16.10.050).
• Housing Priority Zoning Districts—MDH/UHDH/VHDH/MUH (§ 16.15.030–§ 16.15.040).
• Commercial standards reference (§ 16.12.040).
• Business Park/Light Industrial standards and site plan requirement (§ 16.14.030; § 16.14.040; § 16.14.060–§ 16.14.090).
• Open Space districts (§ 16.18.010).
• Planned Development districts and standards (§ 16.20.020; § 16.20.050; § 16.20.090).
• General development standards: lot/frontage and setbacks (§ 16.06.040–§ 16.06.050); lot standards reduced by public use (§ 16.06.060); landscaping (§ 16.06.110); fences/walls/hedges (§ 16.06.120).
• Water‑Efficient Landscaping purpose/definitions (§ 16.07.010–§ 16.07.020).
• Hillside adaptive development and grading/architecture (§ 16.08.050–§ 16.08.070); grading guidelines (§ 16.50.040).
• Scenic and Small Lot overlays (Chapters 16.30, 16.32).
• Equestrian & Large Animal Overlay (§ 16.33.010–§ 16.33.020).
• Specific Plan procedures (§ 16.64.010).
• ADUs/JADUs and ADU Ineligibility Overlay (§ 16.10.140).