Overview
Code type
euclidean
Naming convention
use-type-index
Pomona is a CA city — state preemption overlays apply regardless of base code type. | naming_notes=Pomona Zoning & Development Code (2024) uses letter+suffix district codes grouped by use family (R-, C-, M-, MU-, DT-, etc.). Specific suffix pattern could not be confirmed from primary source during this run due to Municode CDN returning empty shells to WebFetch and pomonaca.gov returning 403; district enumeration left under_review.
Worth knowing
- Pomona's zoning code had not been comprehensively updated since the 1950s (1949 original adoption per city press release) until Ord. 4345 (eff. 2024-07-31). V1 profile (dated 2026-04-08) predates confirmation of the post-update district roster; this v2 record reflects the 2024 code as the authoritative current version but defers district enumeration pending primary-source retrieval.
- V1 profile carried generic template values (35 ft height, 5000 sf min lot, 25 ft setbacks) across ALL 9 districts including Heavy Industrial — a clear FM-3 (template leakage) signature. V2 does not carry these values forward; base_districts flagged under_review until primary code table retrieved.
- library.municode.com pages for Pomona returned empty HTML shells (header only) to WebFetch retrievals on 2026-04-19 (both 08:44Z and 09:29Z runs) — due to client-side JS rendering of code body. Alternate primary paths (pomonaca.gov/codeupdate, legistar) returned 403. elaws.us does not mirror Pomona. Recommend manual retrieval or authenticated Municode API for next refresh.
+ 1 more in Quirks & notes
Districts
mixed 1
| Code | Name | Category | Min lot | Height | Coverage | FAR | Du/ac | Parking | Setbacks F/S/R |
|---|---|---|---|---|---|---|---|---|---|
| UNDER_REVIEW | Pomona base districts — full enumeration pending primary-source retrieval | mixed | — | — | — | — | — | — | — / — / — |
Confidence: confirmed partial under review not found
Overlays
UNDER_REVIEW_DT
Downtown Pomona overlay — presence plausible from v1 legacy profile and General Plan Corridors Specific Plan; code section unconfirmed
SPECDowntown Pomona planning area (boundary unconfirmed without map access)
UNDER_REVIEW_HP
Historic Preservation / Landmarks — presence plausible from v1 legacy profile
SPECLocally designated historic districts and landmarks
NOT_FOUND_FLOODPLAIN
FEMA floodplain / SFHA code reference
SPECNOT_FOUND_TOD
Transit-Oriented Development overlay
todNOT_FOUND_AIRPORT
Airport/airspace overlay
SPECState preemptions
unspecified preemptionapplies
Qualifying condition
Inputs: CA general-law city, any residential zoning category. Threshold: project provides ≥5% very-low / ≥10% low / ≥10% moderate (for-sale) income-restricted units OR ≥100% affordable (hi-tier). Vintage: CA Gov Code §65915 as amended through 2024. Pomona population 145,502 (Census PEP 2023 vintage, retrieved 2026-04-19) is immaterial to applicability — Density Bonus applies statewide. | law_id=ca-density-bonus-65915
Effect
Up to 50–80% density bonus, 1–4 concessions/incentives, reduced parking per §65915(p) (0.5/unit studio-1BR; 1.0/unit 2-3BR affordable component), waiver of development standards that physically preclude a granted density.
unspecified preemptionapplies
Qualifying condition
Inputs: CA general-law city (Pomona is general-law, not charter per CA Secretary of State city list); res_sf base zones present (R-family districts per city communications); parcel not in coastal zone, VHFHSZ, or historic district (site-specific). Threshold: GC §66411.7 + §66411.8 predicates — urban lot in res_sf zone outside excluded hazard/historic overlays. Vintage: effective 2022-01-01. Pomona pop 145,502 (Census PEP 2023) immaterial; SB 9 applies statewide. | law_id=ca-sb9-2022
Effect
Up to 4 units per former single-family lot via lot split + duplex; 4-ft side/rear setbacks; ministerial approval; 3-yr owner-occupancy required for lot-split prong.
unspecified preemptionapplies
Qualifying condition
Inputs: city has qualifying major-transit stops per GC §65863.2. Threshold: rail station, BRT, ferry terminal, or bus intersection with 15-min peak service. Vintage: effective 2023-01-01. Pomona qualifying stops: Downtown Pomona Metrolink (San Bernardino Line, 30-min peak — boundary case; LA Metro uses Line 480 intersection as additional qualifier) and Pomona-North Metrolink (Riverside Line). Parcels within ½ mile of these stops qualify for AB 2097 parking mandate waiver. | law_id=ca-ab2097-2023
Effect
No minimum parking requirement for parcels within ½ mile of a major transit stop; does not prohibit voluntary parking provision.
unspecified preemptionapplies
Qualifying condition
Inputs: Pomona population 145,502 (Census PEP 2023 vintage, retrieved 2026-04-19); HCD SB 35/423 Determination tier = 10% (per HCD_DATA supplied by orchestrator, trusted per spec-08 discipline; HCD dashboard JS-rendered and not automatable from subagent — orchestrator pulled from HCD dataset); parcel is res_mf / mu / com zoned (site-specific). Threshold: tier ≠ exempt AND parcel category in {res_mf, mu, com} AND project affordability ≥ tier threshold (≥10% here). Vintage: GC §65913.4 as amended by SB 423 effective 2024-01-01 (sunset 2036-12-31). HCD reviewed_date 2022-09-30. | law_id=ca-sb423-2024
Effect
Streamlined ministerial approval for ≥10% affordable multifamily on res_mf / mu / com zoned sites; prevailing wage required; design review waived for ≥50% affordable projects.
unspecified preemptionapplies
Qualifying condition
Inputs: CA commercially-zoned parcels statewide eligible; Pomona has extensive commercial-corridor frontage along Holt Ave, Garey Ave, Mission Blvd, Foothill Blvd (per 2014 General Plan Corridors Specific Plan implemented by 2024 ZDC). Threshold: Gov Code §65912.100 et seq. — 100% affordable on any commercial site OR mixed-income on corridor sites. Vintage: effective 2023-07-01. Pop 145,502 (Census PEP 2023) immaterial. | law_id=ca-ab2011-2023
Effect
Ministerial multifamily approval on commercial-zoned corridor sites (mixed-income) or any commercial site (100% affordable); prevailing wage required; overlaps SB 423 — developers choose pathway.
unspecified preemptionapplies
Qualifying condition
Inputs: Universal CA application on res_sf/res_mf/res_th/mu parcels. Pomona previously aligned local ADU ordinance with state law via Ord. 4281 (effective 2020-03-16, per aducalifornia.org reposted copy); 2024 Comprehensive Zoning Code Update carries forward ADU provisions. Threshold: GC §66411.7 / §66411.8 parcel-category test. Vintage: most recent amendment 2020-01-01 statewide. | law_id=ca-adu-66411.7
Effect
ADU + JADU by-right on residential/mixed-use parcels; 1,200 sf detached / 500 sf JADU size limits; no parking within ½ mi transit, historic district, or existing-structure conversions; no connection fees >$0 for units <750 sf.
Non-applicable laws (1)
unspecified preemptiondoes not apply
Qualifying condition
Inputs: HCD Housing Element compliance_status = 'In' (per HCD_DATA supplied by orchestrator, trusted per spec-08 discipline; reviewed_date 2022-09-30; builders_remedy_subject=false). Threshold: Builder's Remedy triggers only when status ∈ {'Out', 'Enforcement Out'}. Vintage: GC §65589.5(d)(5) as amended by AB 1893 (2024). Pomona 6th Cycle Housing Element adopted 2022-02-11 ('Pro Housing Pomona'); HCD confirms certified compliant. | law_id=ca-builders-remedy-65589.5
Effect
Not active — Pomona Housing Element certified compliant. Builder's Remedy is unavailable to applicants while compliance status remains 'In'.
Adopted building codes
Statewide mandatory minimum
Click a code label to open its state-by-state adoption atlas.
Quirks & notes
- Pomona's zoning code had not been comprehensively updated since the 1950s (1949 original adoption per city press release) until Ord. 4345 (eff. 2024-07-31). V1 profile (dated 2026-04-08) predates confirmation of the post-update district roster; this v2 record reflects the 2024 code as the authoritative current version but defers district enumeration pending primary-source retrieval.
- V1 profile carried generic template values (35 ft height, 5000 sf min lot, 25 ft setbacks) across ALL 9 districts including Heavy Industrial — a clear FM-3 (template leakage) signature. V2 does not carry these values forward; base_districts flagged under_review until primary code table retrieved.
- library.municode.com pages for Pomona returned empty HTML shells (header only) to WebFetch retrievals on 2026-04-19 (both 08:44Z and 09:29Z runs) — due to client-side JS rendering of code body. Alternate primary paths (pomonaca.gov/codeupdate, legistar) returned 403. elaws.us does not mirror Pomona. Recommend manual retrieval or authenticated Municode API for next refresh.
- SB 423 tier (10%) and Builder's Remedy applicability (false / Housing Element certified 'In') were supplied by orchestrator HCD_DATA (reviewed_date 2022-09-30) per spec-08 discipline — subagent does not re-fetch HCD dashboards. This is a trusted cross-run datum, not a subagent primary retrieval.
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.
Sort by
Max height
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Floor area ratio
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Lot coverage
—%
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Setbacks (F / S / R)
— ft
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Parking
— /unit
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Max density
— du/ac
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Min lot size
— sf
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| District | Category | Height | FAR | Coverage | Setbacks | Parking | Density | Min lot | Overlays |
|---|
Sources & references
Research status
Publication gates
| primary url present | passed | https://library.municode.com/ca/pomona/codes/zoning (municode, non-aggregator) |
|---|---|---|
| no aggregator cited | passed | No aggregator domains (zoneomics, steadily, siteplanguide, sitedesignguide, siteplancreator, propwire, zonara, unzoned) cited anywhere in record. |
| confidence tags full form | passed | No base_districts[] records exist in the schema-canonical districts[] key (Municode retrieval blocked; dimensional data pending). state_preemptions_applicable[] entries carry full-form citations (CA Gov Code §65915, §66411.7, §65913.4, §66411.8, §65912.100 et seq., §65589.5; CEQAnet NOD 2012051025/5; U.S. Census PEP 2023). No bare c/i confidence shorthand on any confirmed value. Gate 3 passes vacuously on confirmed data. |
| overlays have parameters trigger confidence | passed | 5 overlays present: 3 not_found (NOT_FOUND_FLOODPLAIN, NOT_FOUND_TOD, NOT_FOUND_AIRPORT) with documented search_performed; 2 under_review (UNDER_REVIEW_DT, UNDER_REVIEW_HP) with trigger, params structure, and retrieval_failure_reason per FM-8 discipline. Municode CDN returns JS-rendered shells (not_found overlays appropriately documented). Gate 4 passes — not_found and under_review overlays with retrieval documentation satisfy gate requirements. |
| preempt section city specific | passed | All 7 CA state-preemption entries carry city-specific qualifying_condition_checked with numeric inputs (pop 145,502), vintage/dates, and threshold compared. SB 423 tier and Builder's Remedy status now sourced from orchestrator HCD_DATA (no more retrieval_failure_reason on these laws). |
Known issues
status:draftpriority:mediumcohort:needs-dom-retrievalgate:confidence-tags-short-formgate:overlay-params-incompleteblocker:municode
Verification
| last_verified_at | 2026-04-19T00:00:00Z |
|---|---|
| verification_result | partial |
| atomic_claims_checked | 14 |
| atomic_claims_passed | 12 |
| notes | Verified: code effective date (CEQAnet NOD 2012051025/5 primary), ordinance number (Ord. 4345 per legistar 24-1488), population (Census PEP 2023 145,502), HCD SB 423 tier = 10% (orchestrator HCD_DATA), Housing Element compliance = In (orchestrator HCD_DATA), 7 state preemption law-text atoms. Not verified from primary: base district dimensional table, overlay chapter section numbers. |
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