Zoning › California › San Bernardino County › Ontario

Ontario, CA Zoning

Euclidean-zoning. 36 districts · 11 overlays · 6 applicable state preemptions.

Overview

Code type
euclidean
Naming convention
density-encoded (residential tier numeric suffix = max du/ac; e.g., LDR-5 = up to 5 du/ac, HDR-45 = up to 45 du/ac)

Ontario Development Code (Title 9) is a conventional Euclidean code organized by base districts in Chapter 5.0 §5.01.005 plus overlay districts also enumerated in §5.01.005.F. Dimensional standards live in Chapter 6.0 §§6.01.010-6.01.035 (Tables 6.01-1 through 6.01-10). It is NOT form-based or hybrid-PD, though MU-1, MU-3, MU-6, MU-8B, MU-8C, and MU-8E require adoption of a Planned Unit Development before development may occur (per §6.01.020). It is deeply integrated with The Ontario Plan (General Plan).

Worth knowing
  • DENSITY-ENCODED RESIDENTIAL: AR-2, RE-2, RE-4, LDR-5, MDR-11, MDR-18, MDR-25, HDR-45 — the numeric suffix IS the upper du/ac bound. This upgrade run confirms ALL EIGHT residential districts live in §5.01.005.A.1-A.8, not just LDR-5/MDR-*/HDR-45. AR-2 and RE-2 cap at 2.0 du/ac, RE-4 at 4.0 du/ac.
  • MIXED-USE HAS NON-CONTIGUOUS NUMERICS: MU-1, MU-3, MU-6, MU-8B, MU-8C, MU-8D, MU-8E — THERE IS NO MU-2, MU-4, MU-5, MU-7, or MU-8A in the current Chapter 5 (confirmed §5.01.005.C.1-C.7). The prior v2 profile listed an MU-2 that does not exist. All mixed-use districts EXCEPT MU-8D require a Planned Unit Development before development may occur per §6.01.020.C.
  • HDR-45 EXPLICITLY ZONED FOR TRANSIT-ORIENTED DEVELOPMENT: §5.01.005.A.8 reads 'generally located within 1/2-mile of a transit corridor or station' — Ontario baked AB 2097 parking-elimination geography directly into its highest-density residential zoning district definition. This is an unusually explicit link between local zoning and state-law transit-proximity preemption.

+ 10 more in Quirks & notes

Districts

com 7mu 7res_sf 5ind 5res_mf 4open_space 2special 2institutional 1airport 1transport 1utility 1
CodeNameCategory Min lotHeight CoverageFAR Du/acParking Setbacks F/S/R
AR-2Residential-Agricultural (0-2.0 DU/Acre)res_sf18,000 sf[4]35 ft[5]0.3[6]—2[7]—30[1] / 10[2] / 25[3]
RE-2Rural Estate (0-2.0 DU/Acre)res_sf10,000 sf[11]35 ft[12]0.4[13]—2[14]—30[8] / 10[9] / 25[10]
RE-4Residential Estate (2.1-4.0 DU/Acre)res_sf10,000 sf[18]35 ft[19]0.4[20]—4[21]—20[15] / 5[16] / 10[17]
LDR-5Low Density Residential (2.1-5.0 DU/Acre)res_sf7,200 sf[25]35 ft[26]0.5[27]—5[28]—20[22] / 5[23] / 10[24]
MDR-11Low-Medium Density Residential (5.1-11.0 DU/Acre)res_sf5,000 sf[32]35 ft[33]0.6[34]—11[35]—20[29] / 5[30] / 5[31]
MDR-18Medium Density Residential (11.1-18.0 DU/Acre)res_mf10,000 sf[39]45 ft[40]0.6[41]—18[42]—20[36] / 5[37] / 5[38]
MDR-25Medium-High Density Residential (18.1-25.0 DU/Acre)res_mf10,000 sf[46]60 ft[47]0.6[48]—25[49]—20[43] / 5[44] / 5[45]
HDR-45High Density Residential (25.1-45.0 DU/Acre)res_mf43,560 sf[53]75 ft[54]1[55]—45[56]—10[50] / 5[51] / 5[52]
CSCorner Storecom10,000 sf[60]35 ft[61]—0.4[62]——20[57] / 10[58] / 10[59]
CNNeighborhood Commercialcom10,000 sf[66]35 ft[67]—0.4[68]——20[63] / 5[64] / 5[65]
CCCommunity Commercialcom10,000 sf[72]35 ft[73]—0.4[74]——20[69] / 0[70] / 0[71]
CRRegional Commercialcom10,000 sf[78]55 ft[79]—0.4[80]——25[75] / 0[76] / 0[77]
CCSConvention Center Support Commercialcom20,000 sf[84]55 ft[85]—1[86]——25[81] / 0[82] / 0[83]
OLLow Intensity Officecom7,200 sf[90]35 ft[91]—0.75[92]——20[87] / 5[88] / 5[89]
OHHigh Intensity Officecom7,200 sf[96]65 ft[97]—0.75[98]——20[93] / 0[94] / 0[95]
MU-1Downtown Mixed Usemu———2[99]75[100]—— / — / —
MU-3East Guasti Mixed Usemu—55 ft[101]—1[102]65[103]—— / — / —
MU-6East Holt Boulevard Mixed Usemu—55 ft[104]—2[105]40[106]—— / — / —
MU-8BMountain/Fourth Mixed Usemu—55 ft[107]—1[108]75[109]—— / — / —
MU-8CWest Holt Boulevard Mixed Usemu—55 ft[110]—2[111]40[112]—— / — / —
MU-8DEuclid/Francis Mixed Usemu—55 ft[113]—1[114]75[115]—— / — / —
MU-8EEuclid/Walnut Mixed Usemu—55 ft[116]—1[117]75[118]—— / — / —
BPBusiness Parkind43,560 sf[122]45 ft[123]—0.6[124]——20[119] / 0[120] / 0[121]
IPIndustrial Parkind43,560 sf[128]45 ft[129]—0.6[130]——20[125] / 0[126] / 0[127]
ILLight Industrialind10,000 sf[134]55 ft[135]—0.55[136]——20[131] / 0[132] / 0[133]
IGGeneral Industrialind10,000 sf[140]55 ft[141]—0.55[142]——20[137] / 0[138] / 0[139]
IHHeavy Industrialind10,000 sf[146]55 ft[147]—0.55[148]——20[143] / 0[144] / 0[145]
CIVCivicinstitutional——————— / — / —
MHPMobile Home Parkres_mf————11[149]—— / — / —
ONTOntario International Airportairport———0.55[150]——— / — / —
OS-COpen Space — Cemeteryopen_space——————— / — / —
OS-ROpen Space — Recreationopen_space——————— / — / —
PUDPlanned Unit Developmentspecial——————— / — / —
RCRail Corridortransport——————— / — / —
SPSpecific Planspecial——————— / — / —
UCUtilities Corridorutility——————— / — / —

Confidence: confirmed partial under review not found

Overlays

ONT-ALUCP
Airport Land Use Compatibility Plan Overlay — LA/Ontario International Airport (ONT ALUCP)
airport-airspace
ONT ALUCP (adopted 2011-04-19); Ontario Development Code Table 6.01-1 Item A.14, Table 6.01-3 Item A.19, Table 6.01-8 Item A.13, Table 6.01-10 Item A.14 (Airport Safety Zones), Table 6.01-10 Note 7; CA PUC §§21659, 21670-21679; 14 CFR Part 77.
CNO
CNO (Chino Airport) Overlay Zoning District
airport-airspace
Ontario Development Code §5.01.005.F.7 (CNO Overlay); Reference I (Chino ALUCP, rev. 05-02-2023).
AG
AG (Agriculture) Overlay Zoning District
agriculture-interim
Ontario Development Code §5.01.005.F.1 (AG Overlay); Table 6.01-11 (Animal Types and Densities); Table 6.01-12 (AG Overlay Development Standards).
EA
EA (Euclid Avenue) Overlay Zoning District
historic
Ontario Development Code §5.01.005.F.2 (EA Overlay); §5.02.005.D.3 (EA land-use applicability); §6.01.015.E.2 (Euclid Avenue parking lot location).
ES
ES (Emergency Shelter) Overlay Zoning District
housing-state-law
Ontario Development Code §5.01.005.F.3 and §5.02.005.D.4 (ES Overlay); §5.03.400 (Temporary Shelters); GC §65583.
MTC
MTC (Multimodal Transit Center) Overlay Zoning District
transit-interim
Ontario Development Code §5.01.005.F.4 (MTC Overlay); §5.02.005.D.5 (MTC land-use applicability).
ICC
ICC (Interim Community Commercial) Overlay Zoning District
nonconforming-interim
Ontario Development Code §5.01.005.F.5 (ICC Overlay).
AH
AH (Affordable Housing) Overlay Zoning District
housing-state-law
Ontario Development Code §5.01.005.F.6 (AH Overlay); HCD certification letter 2022-10-07 (sbdOntarioAdoptedIN100722.pdf).
SP
Specific Plan (SP) Zoning District
specific-plan
Ontario Development Code §5.01.005.E.8 (SP district); §5.02.005.D.2 (SP land-use applicability); city-published Specific Plans list at ontarioca.gov/government/community-development/planning/governing-documents/specific-plans.
FEMA-SFHA
FEMA Special Flood Hazard Area (floodplain)
floodplain
44 CFR Part 60 (federal NFIP); Ontario Development Code §6.01.010.F.3.f (SB 9 SFHA exclusion); §5.01.005.E.9 (UC flood control district). Local freeboard amount in the City's floodplain management ordinance not extracted in this run.
HIST
Historic Preservation (Division 7.01)
historic
Ontario Development Code Chapter 7.0 (§§7.01.000-7.01.065); Tables 6.01-1 A.10, 6.01-3 A.15, 6.01-8 A.9, 6.01-10 A.10 (cross-references to Division 7.01).

State preemptions

CA-ADU-GC§66411.7-66411.8applies
Qualifying condition
Applies to all CA cities unconditionally on parcels zoned residential or mixed-use. Ontario (general-law city, population 178,347; San Bernardino County pop 2,192,882) has AR-2, RE-2, RE-4, LDR-5, MDR-11, MDR-18, MDR-25, HDR-45, MHP residential base districts and MU-1/MU-3/MU-6/MU-8B/MU-8C/MU-8D/MU-8E mixed-use districts all eligible for ADU/JADU by-right approval.
Effect
Ministerial approval with 60-day shot clock; up to 1,200 sf detached ADUs; up to 500 sf JADUs; no owner-occupancy requirement; no minimum lot size; no parking within 1/2 mile of major transit stop, within historic district, or for ADUs from existing structures. SB 1211 (eff. 2025-01-01) authorizes up to 8 detached ADUs on qualifying multifamily lots.
CA-SB9-GC§65852.21applies
Qualifying condition
Applies to ministerial lot splits and duplex conversion on single-family zoned parcels. Ontario has res_sf base districts (AR-2, RE-2, RE-4, LDR-5, MDR-11) that qualify. Exclusions per Development Code §6.01.010.F.3: historic districts, Very High Fire Hazard Severity Zones, FEMA SFHA (§6.01.010.F.3.f), regulatory floodways (§6.01.010.F.3.g), conservation easements. Ontario has no coastal zone; has FEMA SFHA along Cucamonga Creek / San Antonio Creek; no Very High FHSZ (valley-floor city). Ontario has codified the SB 9 framework in §6.01.010.F.
Effect
Ministerial urban lot split creating two lots of >=1,200 sf each; ministerial duplex on single-family parcels. Local objective development standards apply but cannot preclude SB 9 projects.
CA-AB2097-GC§65863.2applies
Qualifying condition
Applies in cities where a parcel is within 1/2 mile of a qualifying 'major transit stop.' Ontario served by Omnitrans fixed-route bus (including sbX/Route 66 and Holt Boulevard BRT planning) and the Metrolink Ontario Station (San Bernardino Line) in historic downtown. Metrolink stations qualify as major transit stops per PRC §21064.3 / GC §65863.2. §5.01.005.A.8 explicitly defines HDR-45 as 'generally located within 1/2-mile of a transit corridor or station' — the city's highest-density tier was zoned with transit-oriented siting baked in. Per-parcel GTFS audit required for site-level determination.
Effect
Cities cannot impose or enforce minimum parking requirements on residential, commercial, or mixed-use development within 1/2 mile of a qualifying major transit stop.
CA-DENSITY-BONUS-GC§65915applies
Qualifying condition
Applies to all CA cities unconditionally on parcels where housing is a permitted use. Ontario's res_mf (MDR-11/18/25, HDR-45), mu (MU-1, MU-3, MU-6, MU-8B, MU-8C, MU-8D, MU-8E), and commercial districts allowing housing all qualify. Table 6.01-1 Note 2, Table 6.01-3 Note 2 explicitly incorporate GC §§65915-65918 density bonus. AB 1287 (eff. 2024-01-01) stacks a second bonus tier reaching up to ~100% combined.
Effect
Density bonus up to 50% (AB 1287 stack up to ~100%) for projects providing 5-15% very-low-income, 10-24% low-income, or 10-44% moderate-income units; plus concessions/waivers and reduced parking.
CA-SB423-GC§65913.4applies
Qualifying condition
SB 423 streamlining tier depends on HCD SMAP Determination. Ontario's 6th-cycle (2021-2029) Housing Element adopted 2022-08-16 and HCD FULL-COMPLIANCE certification letter issued 2022-10-07 to City Manager Scott Ochoa (HCD letter sbdOntarioAdoptedIN100722.pdf — text extracted in this run). Rezones required under Housing Element Program 13 were completed 2022-03-01 (confirmed per HCD letter). SB 423 tier (Exempt / 10% / 50%) depends on APR progress vs. RHNA milestones. HCD SMAP Dashboard (hcd.ca.gov/planning-and-community-development/streamlined-ministerial-approval-process-dashboard) is the authoritative source but the interactive dashboard was not tier-extractable live in this run.
Effect
If HCD tier is 10% or 50%, ministerial streamlined approval available for qualifying multifamily projects on res_mf, mu, com parcels where housing is permitted.
Retrieval issue
HCD SMAP Dashboard tier for Ontario not retrieved live (interactive dashboard not tier-extractable via WebFetch).
CA-AB2011-GC§65912.100applies
Qualifying condition
Applies on commercial-zoned parcels meeting 'qualifying corridor' criteria. Ontario has CS, CN, CC, CR, CCS, OL, OH commercial districts and MU-1/MU-3/MU-6/MU-8B/MU-8C/MU-8D/MU-8E mixed-use (CC-equivalent FAR). Major corridors include Euclid Ave, Holt Blvd (SR-83), Mountain Ave, Mission Blvd, Philadelphia St, 4th St, Grove Ave, Milliken Ave. Many meet AB 2011 ROW width thresholds (>=70 ft small-site pathway, >=100 ft corridor pathway). Per-segment ROW audit required for site-level determination.
Effect
Ministerial multifamily approval on qualifying commercial corridor sites; 100%-affordable projects eligible across broader commercial zones.
Non-applicable laws (2)
CA-BUILDERS-REMEDY-GC§65589.5(d)(5)confirmed
Qualifying condition
Builder's Remedy triggers when a city lacks an HCD-certified substantially-compliant Housing Element. Ontario's 6th-cycle (2021-2029) Housing Element was adopted 2022-08-16 and HCD certification letter issued 2022-10-07 stating 'HCD is pleased to find the adopted housing element in full compliance with State Housing Element Law' (per HCD letter sbdOntarioAdoptedIN100722.pdf text extracted this run). Ontario IS in full compliance; Builder's Remedy is DORMANT.
Effect
Dormant — no effect while Housing Element remains certified compliant.
CA-SB10-GC§65913.5not_applicable
Effect
No effect unless city opts in.

Adopted building codes

Statewide mandatory minimum

IBC
2024 CBC
IRC
2024 CRC
NEC
2023
IFC
2024
IECC (Residential)
2024 CALGreen
IECC (Commercial)
2024 CALGreen

Click a code label to open its state-by-state adoption atlas.

Amendment history

DateKindCitation
2026-02-17supplement effectiveChapter 5.0 'Zoning and Land Use' and Chapter 6.0 'Development & Subdivision Regs' city-hosted PDFs both carry revision stamp 02-17-2026.
2025-04-01amendmentResidential Objective Development and Design Standards (ODDS) — Reference J of the Development Code — revision stamped 04.01.2025, implementing SB 330 objective-standards requirement for residential projects.
2022-08-16amendmentOntario's 6th-Cycle (2021-2029) Revised Adopted Housing Element adopted by Council 2022-08-16; HCD FULL COMPLIANCE certification letter issued 2022-10-07 to City Manager Scott Ochoa (HCD letter sbdOntarioAdoptedIN100722).
2015-12-01adoptionDevelopment Code adopted by Ontario City Council Ordinance No. 3028 on 2015-12-01 (per city press/planning archive and amlegal §9-1.01 'Adoption of the Development Code').

Quirks & notes

  • DENSITY-ENCODED RESIDENTIAL: AR-2, RE-2, RE-4, LDR-5, MDR-11, MDR-18, MDR-25, HDR-45 — the numeric suffix IS the upper du/ac bound. This upgrade run confirms ALL EIGHT residential districts live in §5.01.005.A.1-A.8, not just LDR-5/MDR-*/HDR-45. AR-2 and RE-2 cap at 2.0 du/ac, RE-4 at 4.0 du/ac.
  • MIXED-USE HAS NON-CONTIGUOUS NUMERICS: MU-1, MU-3, MU-6, MU-8B, MU-8C, MU-8D, MU-8E — THERE IS NO MU-2, MU-4, MU-5, MU-7, or MU-8A in the current Chapter 5 (confirmed §5.01.005.C.1-C.7). The prior v2 profile listed an MU-2 that does not exist. All mixed-use districts EXCEPT MU-8D require a Planned Unit Development before development may occur per §6.01.020.C.
  • HDR-45 EXPLICITLY ZONED FOR TRANSIT-ORIENTED DEVELOPMENT: §5.01.005.A.8 reads 'generally located within 1/2-mile of a transit corridor or station' — Ontario baked AB 2097 parking-elimination geography directly into its highest-density residential zoning district definition. This is an unusually explicit link between local zoning and state-law transit-proximity preemption.
  • DUAL AIRPORT INFLUENCE CODIFIED AS OVERLAYS: Ontario is uniquely in the AIA of TWO airports — the primary LA/Ontario International Airport (ONT) via ALUCP adopted 2011-04-19 cross-referenced at Table 6.01-1 A.14 / 6.01-3 A.19 / 6.01-8 A.13 / 6.01-10 A.14, and the Chino Airport (CNO) codified as the CNO Overlay Zoning District at §5.01.005.F.7 with Reference I (Chino ALUCP rev. 05-02-2023). Table 6.01-10 Note 7 explicitly subordinates industrial building height and FAR to ALUCP restrictions.
  • NEW MODEL COLONY (NMC) / ONTARIO RANCH — 13-sq-mi annexation governed primarily by 20+ Specific Plans: NMC area (annexed 1999) is governed primarily by SP district (§5.01.005.E.8) with AG Overlay (§5.01.005.F.1) on remaining agricultural parcels. Named SPs in the NMC include Edenglen, Esperanza, Creekside, Countryside, Parkside, Rich-Haven, Grand Park, Corsaire, Ontario Ranch Business Park. Not a distinct 'NMC overlay' — it is a geographic region mostly in SP zoning.
  • HOUSING ELEMENT CERTIFIED 2022-10-07 IN FULL COMPLIANCE: HCD letter sbdOntarioAdoptedIN100722.pdf (text extracted this run) states 'HCD is pleased to find the adopted housing element in full compliance with State Housing Element Law.' Rezones under Program 13 completed 2022-03-01. Certification means Builder's Remedy is DORMANT.
  • HIGHEST INLAND EMPIRE RHNA: Ontario had the highest 6th-cycle RHNA allocation of any Inland Empire city. State-law ministerial pathways (SB 423, AB 2011, Density Bonus) are central to city's growth trajectory.
  • DEVELOPMENT CODE LIVES AS TITLE 9 + CITY-HOSTED PDFs: Codified as Title 9 OMC (amlegal), city maintains fresher chapter PDFs at content.ontarioca.gov — Chapter 5.0 AND Chapter 6.0 BOTH stamped 02-17-2026 on current revisions. Use city-hosted PDFs for freshness and amlegal for codified hyperlinks.
  • DENSITY-BOUND ENCODING IS UPPER-BOUND RANGE: Each residential density suffix is the UPPER bound of a du/ac RANGE, not a standalone maximum. Minimum-density floors are codified and constrain UPZONING (e.g., HDR-45 floor is 25.1 du/ac).
  • DUAL-FRONTAGE REQUIREMENT FOR CR AUTO USES: CR district requires at least 350 lineal feet of freeway frontage along I-10 or I-15 for automobile dealer uses under Office-Commercial Policy Plan designation per §5.01.005.B.4.
  • CHAPTER 5 AND CHAPTER 6 REVISIONS 2026-02-17: Both core zoning chapters stamped 2026-02-17 reflecting recent amendments after the Residential Objective Development & Design Standards (ODDS) adoption (Reference J, rev. 04-01-2025). Freshness-critical for state-law Objective Standards compliance (SB 330).
  • ODDS ADOPTED AS REFERENCE J: Residential Objective Development and Design Standards — the city's SB 330 compliance vehicle — adopted as Reference J of the Development Code (rev. 04-01-2025). Implements objective-standards requirements for residential projects subject to SB 330, SB 423, and AB 2011 ministerial pathways.
  • HISTORIC PRESERVATION IS CHAPTER 7, EUCLID AVE IS OVERLAY: Ontario has TWO distinct historic-preservation regulatory layers — (1) Chapter 7.0 Division 7.01 (§§7.01.000-7.01.065) city-wide Historic Resources regime with Certificate of Appropriateness, mitigation fee, and owner's duty to maintain, and (2) the EA (Euclid Avenue) Overlay Zoning District at §5.01.005.F.2 protecting Euclid Avenue's National Register of Historic Places listing. These operate in parallel; the Chapter 7 regime is not a zoning overlay.

Formulas

Definitions

height
Grade to highest point of structure.
lot_coverage
Building footprint / lot area.
far
Gross floor area / lot area.
du_ac
Dwelling units per gross acre (density-encoded in the residential district's numeric suffix).
setback_front
Front property line to nearest building face.
setback_side
Side property line to nearest building face.
setback_rear
Rear property line to nearest building face.
parking
Spaces per dwelling unit unless noted.

Capacity calculations

max_footprint_sf
lot_area_sf * lot_coverage
max_gfa_sf
lot_area_sf * far
buildable_width_ft
lot_width_ft - setback_side_ft * 2
buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft
max_stories_approx
max_height_ft / 10

Massing explorer

Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.

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Max height
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Lot coverage
—%
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Setbacks (F / S / R)
— ft
——
Parking
— /unit
——
Max density
— du/ac
——
Min lot size
— sf
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District Category Height FAR Coverage Setbacks Parking Density Min lot Overlays

Sources & references

Primary source
City of Ontario Development Code (Title 9, Ontario Municipal Code)
Adopted by Ordinance 3028 on 2015-12-01; effective Jan 2016; Chapter 5.0 and Chapter 6.0 revisions both stamped 2026-02-17. · retrieved 2026-04-24
Citations
  1. [1] §6.01.010 T6.01-1
  2. [2] §6.01.010 T6.01-1
  3. [3] §6.01.010 T6.01-1
  4. [4] §6.01.010 T6.01-1
  5. [5] §6.01.010 T6.01-1
  6. [6] §6.01.010 T6.01-1
  7. [7] §5.01.005.A.1
  8. [8] §6.01.010 T6.01-1
  9. [9] §6.01.010 T6.01-1
  10. [10] §6.01.010 T6.01-1
  11. [11] §6.01.010 T6.01-1
  12. [12] §6.01.010 T6.01-1
  13. [13] §6.01.010 T6.01-1
  14. [14] §5.01.005.A.2
  15. [15] §6.01.010 T6.01-1
  16. [16] §6.01.010 T6.01-1
  17. [17] §6.01.010 T6.01-1
  18. [18] §6.01.010 T6.01-1
  19. [19] §6.01.010 T6.01-1
  20. [20] §6.01.010 T6.01-1
  21. [21] §5.01.005.A.3
  22. [22] §6.01.010 T6.01-1
  23. [23] §6.01.010 T6.01-1
  24. [24] §6.01.010 T6.01-1
  25. [25] §6.01.010 T6.01-1
  26. [26] §6.01.010 T6.01-1
  27. [27] §6.01.010 T6.01-1
  28. [28] §5.01.005.A.4
  29. [29] §6.01.010 T6.01-3
  30. [30] §6.01.010 T6.01-3
  31. [31] §6.01.010 T6.01-3
  32. [32] §6.01.010 T6.01-1
  33. [33] §6.01.010 T6.01-3
  34. [34] §6.01.010 T6.01-1
  35. [35] §5.01.005.A.5
  36. [36] §6.01.010 T6.01-3
  37. [37] §6.01.010 T6.01-3
  38. [38] §6.01.010 T6.01-3
  39. [39] §6.01.010 T6.01-3
  40. [40] §6.01.010 T6.01-3
  41. [41] §6.01.010 T6.01-3
  42. [42] §5.01.005.A.6
  43. [43] §6.01.010 T6.01-3
  44. [44] §6.01.010 T6.01-3
  45. [45] §6.01.010 T6.01-3
  46. [46] §6.01.010 T6.01-3
  47. [47] §6.01.010 T6.01-3
  48. [48] §6.01.010 T6.01-3
  49. [49] §5.01.005.A.7
  50. [50] §6.01.010 T6.01-3
  51. [51] §6.01.010 T6.01-3
  52. [52] §6.01.010 T6.01-3
  53. [53] §6.01.010 T6.01-3
  54. [54] §6.01.010 T6.01-3
  55. [55] §6.01.010 T6.01-3
  56. [56] §5.01.005.A.8
  57. [57] §6.01.015 T6.01-8
  58. [58] §6.01.015 T6.01-8
  59. [59] §6.01.015 T6.01-8
  60. [60] §6.01.015 T6.01-8
  61. [61] §6.01.015 T6.01-8
  62. [62] §5.01.005.B.1
  63. [63] §6.01.015 T6.01-8
  64. [64] §6.01.015 T6.01-8
  65. [65] §6.01.015 T6.01-8
  66. [66] §6.01.015 T6.01-8
  67. [67] §6.01.015 T6.01-8
  68. [68] §5.01.005.B.2
  69. [69] §6.01.015 T6.01-8
  70. [70] §6.01.015 T6.01-8
  71. [71] §6.01.015 T6.01-8
  72. [72] §6.01.015 T6.01-8
  73. [73] §6.01.015 T6.01-8
  74. [74] §5.01.005.B.3
  75. [75] §6.01.015 T6.01-8
  76. [76] §6.01.015 T6.01-8
  77. [77] §6.01.015 T6.01-8
  78. [78] §6.01.015 T6.01-8
  79. [79] §6.01.015 T6.01-8
  80. [80] §5.01.005.B.4
  81. [81] §6.01.015 T6.01-8
  82. [82] §6.01.015 T6.01-8
  83. [83] §6.01.015 T6.01-8
  84. [84] §6.01.015 T6.01-8
  85. [85] §6.01.015 T6.01-8
  86. [86] §5.01.005.B.5
  87. [87] §6.01.015 T6.01-8
  88. [88] §6.01.015 T6.01-8
  89. [89] §6.01.015 T6.01-8
  90. [90] §6.01.015 T6.01-8
  91. [91] §6.01.015 T6.01-8
  92. [92] §5.01.005.B.6
  93. [93] §6.01.015 T6.01-8
  94. [94] §6.01.015 T6.01-8
  95. [95] §6.01.015 T6.01-8
  96. [96] §6.01.015 T6.01-8
  97. [97] §6.01.015 T6.01-8
  98. [98] §5.01.005.B.7
  99. [99] §5.01.005.C.1 / §6.01.020.C.1.c
  100. [100] §5.01.005.C.1 / §6.01.020.C.1.c
  101. [101] §6.01.020.C.2.b
  102. [102] §5.01.005.C.2 / §6.01.020.C.2.b
  103. [103] §5.01.005.C.2 / §6.01.020.C.2.b
  104. [104] §6.01.020.C.3.b
  105. [105] §5.01.005.C.3 / §6.01.020.C.3.b
  106. [106] §5.01.005.C.3 / §6.01.020.C.3.b
  107. [107] §6.01.020.C.4.b
  108. [108] §5.01.005.C.4 / §6.01.020.C.4.b
  109. [109] §5.01.005.C.4 / §6.01.020.C.4.b
  110. [110] §6.01.020.C.5.b
  111. [111] §5.01.005.C.5 / §6.01.020.C.5.b
  112. [112] §5.01.005.C.5 / §6.01.020.C.5.b
  113. [113] §6.01.020.C.6.a
  114. [114] §5.01.005.C.6 / §6.01.020.C.6.b
  115. [115] §5.01.005.C.6 / §6.01.020.C.6.a
  116. [116] §6.01.020.C.7.b
  117. [117] §5.01.005.C.7 / §6.01.020.C.7.b
  118. [118] §5.01.005.C.7 / §6.01.020.C.7.b
  119. [119] §6.01.025 T6.01-10
  120. [120] §6.01.025 T6.01-10
  121. [121] §6.01.025 T6.01-10
  122. [122] §6.01.025 T6.01-10
  123. [123] §6.01.025 T6.01-10
  124. [124] §5.01.005.D.1 / §6.01.025 T6.01-10
  125. [125] §6.01.025 T6.01-10
  126. [126] §6.01.025 T6.01-10
  127. [127] §6.01.025 T6.01-10
  128. [128] §6.01.025 T6.01-10
  129. [129] §6.01.025 T6.01-10
  130. [130] §5.01.005.D.2 / §6.01.025 T6.01-10
  131. [131] §6.01.025 T6.01-10
  132. [132] §6.01.025 T6.01-10
  133. [133] §6.01.025 T6.01-10
  134. [134] §6.01.025 T6.01-10
  135. [135] §6.01.025 T6.01-10
  136. [136] §5.01.005.D.3 / §6.01.025 T6.01-10
  137. [137] §6.01.025 T6.01-10
  138. [138] §6.01.025 T6.01-10
  139. [139] §6.01.025 T6.01-10
  140. [140] §6.01.025 T6.01-10
  141. [141] §6.01.025 T6.01-10
  142. [142] §5.01.005.D.4 / §6.01.025 T6.01-10
  143. [143] §6.01.025 T6.01-10
  144. [144] §6.01.025 T6.01-10
  145. [145] §6.01.025 T6.01-10
  146. [146] §6.01.025 T6.01-10
  147. [147] §6.01.025 T6.01-10
  148. [148] §5.01.005.D.5 / §6.01.025 T6.01-10
  149. [149] §5.01.005.E.2
  150. [150] §5.01.005.E.3

Research status

Publication gates

primary url presentpassedsource.primary_url = official City of Ontario Development Code landing page. Chapter 5 URL, Chapter 6 URL, Chapter 7 URL, ODDS URL, amlegal codified URL, adoption-section URL, zoning-map URL, Specific Plans URL, HCD certification URL, and ALUCP URL are all populated and resolve to primary authorities (city, amlegal, HCD, ONT-IAC). No aggregator domains.
no aggregator citedpassedAll citations point to Ontario Development Code §§5.01, 5.02, 6.01, 7.01 sections with specific subsection/table numbers (e.g., §5.01.005.A.1, §6.01.010 T6.01-1, §6.01.020.C.1.a), California Government/Public Utilities/Civil Code sections, federal CFR, California state bill numbers, content.ontarioca.gov / ontarioca.gov / codelibrary.amlegal.com / ont-iac.com / hcd.ca.gov city-and-state-hosted URLs, and Census primary data.
confidence tags full formpassedAll district and overlay claims carry c§X.XX.XXX form with specific §-numbers (c§5.01.005.A.1, c§5.01.005.F.1, c§6.01.010 T6.01-1, c§6.01.020.C.1.a, c§7.01, c§ALUCP-2011). Partial claims carry p§ with rationale. Preemption entries carry GC § citations plus bill-number cross-references. Federal overlays carry CFR and PUC citations.
overlays have parameters trigger confidencepassedGate 4 — 11 overlay entries each with non-empty parameters[], geographic_trigger, status, citation. ONT ALUCP: 5 parameters incl. FAA/PUC/CFR authorities. CNO Overlay: 4 parameters. AG Overlay: 3 parameters. EA Overlay: 4 parameters. ES Overlay: 3 parameters. MTC Overlay: 3 parameters. ICC Overlay: 2 parameters. AH Overlay: 3 parameters. SP: 4 parameters with 50+ named SPs. FEMA SFHA: 4 parameters (partial — OMC floodplain ordinance section not extracted). Historic Preservation Chapter 7: 8 parameters. All overlays satisfy Gate 4.
preempt section city specificpassedGate 5 — state_preemptions_applicable[] contains eight city-specific entries, each evaluated against Ontario-specific primary data: population 178,347, San Bernardino County 2,192,882, general-law status, Housing Element FULL COMPLIANCE certified 2022-10-07 (live HCD letter text extracted), Metrolink Ontario Station for AB 2097 predicate, Euclid/Holt/Mountain/Mission/4th/Grove/Milliken commercial corridors for AB 2011 predicate, AR-2/RE-2/RE-4/LDR-5/MDR-11 res_sf inventory for SB 9 predicate. Applies distribution: 6 applies=true (ADU confirmed; SB 9 confirmed with local §6.01.010.F codification; AB 2097 partial — GTFS audit outstanding; Density Bonus + AB 1287 confirmed cross-referenced to §6.01.010.H; SB 423 under_review — HCD SMAP tier not retrieved live but Housing Element compliance confirmed; AB 2011 partial — ROW audit outstanding); 2 applies=false (Builder's Remedy DORMANT confirmed from HCD letter; SB 10 not_applicable). Each entry carries qualifying_condition_checked with numeric inputs, effect, effective_date, citation, and preempted_fields_in_this_record[]. preempt_section_summary populated. Federal overlays routed to federal_overlay_refs (FM-P compliant).
verification passedpassedFactored verification with 58 atomic claims covering: (a) source identification with live PDF extraction of Chapter 5, 6, 7 via pdftotext, (b) classification (Euclidean), (c) naming convention (density-encoded residential), (d) 33 district records enumerated from §5.01.005 (8 residential, 7 commercial, 7 mixed-use, 5 industrial, 9 specialized), (e) 11 overlay records enumerated from §5.01.005.F plus SP/FEMA/Historic, (f) 8 state-preemption entries including Ontario-specific HCD certification text extracted live, (g) federal overlay routing (FAR Part 77 ONT/CNO via overlays AND federal_overlay_refs, FEMA SFHA via both). 56/58 claims supported; 2 partial (HCD SMAP tier not retrievable; Division 6.03 parking ratios per-use not per-district). Pass ratio 97% >= 95% threshold.

Data quality

76%completeness51 confirmed3 partial
Documented gaps
  • Ontario's current HCD SMAP tier (Exempt / 10% / 50%) — HCD SMAP interactive dashboard at hcd.ca.gov/planning-and-community-development/streamlined-ministerial-approval-process-dashboard was not tier-extractable via WebFetch in this run; CKAN API returns only raw APR permit rows, not the calculated tier.
  • Per-corridor ROW-width audit for AB 2011 on Euclid Ave, Holt Blvd, Mountain Ave, Mission Blvd, 4th St, Grove Ave, Milliken Ave (baseline corridor identification complete; ROW-width measurements require GIS layer).
  • Per-stop GTFS audit for AB 2097 around Metrolink Ontario Station and qualifying high-frequency Omnitrans service (Metrolink Ontario Station confirmed as major transit stop; bus-stop peak-frequency audit outstanding).
  • Full enumeration of 50+ adopted Specific Plan names is captured in overlays.SP.geographic_trigger but per-plan standards (density, FAR, height, setbacks) require individual SP extraction.
  • Residential ODDS (Reference J, rev. 2025-04-01) specific objective standards not yet extracted into structured fields (URL captured in source.odds_url).
  • Lot coverage values for CS/CN/CC/CR/CCS/OL/OH commercial districts — Table 6.01-8 does not specify a lot-coverage percentage (landscape coverage is specified at 10-18% instead).
  • Off-street parking ratios per Division 6.03 not extracted into per-district parking fields (Division 6.03 covers Off-Street Parking and Loading — separate extraction pass required for per-use parking counts).
  • CIV (Civic), OS-C, OS-R, PUD, RC, SP, UC specialized-district dimensional standards — these districts do not appear in Tables 6.01-1/2/3/8/10 because their standards are either tied to underlying base district (CIV→OH; PUD→PUD document; SP→SP document) or are use-specific (rail corridor, flood-control channel, open space).

Known issues

freshness:volatileblocker:hcd-smap-dashboard-interactive

Verification

last_verified_at2026-04-24T00:00:00Z
verifier_specialistinline-upgrade-20260424
verifier_version1.1
verification_resultpassed_with_live_primary_source_extraction
atomic_claims_checked58
atomic_claims_passed56
atomic_claims_failed2
failed_claimsstatus: partial · reason: HCD SMAP Dashboard is interactive; WebFetch returns the page chrome but not the jurisdiction-level tier assignment. Ontario is NOT a 'failure' jurisdiction (Housing Element certified FULL COMPLIANCE 2022-10-07), but tier designation under SB 423 (Exempt/10%/50%) requires direct dashboard interaction or API access.; status: partial · reason: Division 6.03 establishes parking by NAICS use code, not by zoning district — it cannot be flattened to a single district-level 'parking' value. AB 2097 additionally preempts parking within 1/2 mile of transit. Left null pending separate structured extraction pass.
narrative_refnarratives/ontario-ca/fleet-20260424T000000-1.json

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