Zoning › California › Los Angeles County › Santa Clarita

Santa Clarita, CA Zoning

Euclidean-zoning. 12 districts · 16 overlays · 7 applicable state preemptions.

Overview

Code type
euclidean
Naming convention
use-type-index

Standard Euclidean code organized by zone (non-urban, urban residential, commercial/industrial, mixed use, special standards). California sub-flag triggers state-preemption overlay pass regardless of code type. Specific-plan-heavy sub-flag captures the reality that Old Town Newhall, North Valencia, Town Center, and Corridor Plans (Ch.17.37) substitute base-district standards for large portions of the city. | sub_flags_raw=[specific-plan-heavy] | naming_notes=Santa Clarita UR1–UR5 numbering is density-ordered but not a direct lot-size-encoded or density-encoded formula. UR1 is lowest intensity (2 du/ac), UR5 highest (30 du/ac cap). Each tier carries a distinct density ceiling set in the Ch.17.33 purpose clauses; numbering is best read as an intensity index rather than a lot-size or du/ac formula.

Worth knowing
  • UDC naming is tier-index — UR1–UR5 are numerically ordered by maximum density (2, 5, 11, 18, 30 du/ac) but the numbers are NOT a lot-size or du/ac formula; treat as use-type / intensity index with a lookup. UR5 uniquely carries a minimum density floor (18 du/ac) in addition to the 30 du/ac cap. [confirmed — Ch.17.33 purpose clauses]
  • Overlay-heavy zoning: 15+ overlay types identified (SEA, RP, FP, FHSZ, BR, ES, JC, MP, SMP, MOC, MR, MU, PD, VDS, VS, CP). Base district standards are frequently modified or superseded by overlay provisions and Specific Plans. [confirmed]
  • Extensive fire-hazard coverage: CalFire FHSZ maps extensive canyon/foothill WUI coverage across Santa Clarita (Placerita, Sand, Mint, San Francisquito, Bouquet canyons plus Santa Susana foothills). Large fractions of UR1 and Non-Urban parcels are VHFHSZ, which (a) imposes WUI construction requirements and (b) triggers SB 9 exclusion. [confirmed — CalFire FHSZ]

+ 5 more in Quirks & notes

Districts

res_sf 3res_mf 3com 3spec 2ind 1
CodeNameCategory Min lotHeight CoverageFAR Du/acParking Setbacks F/S/R
UR1Urban Residential 1res_sf—[4]35 ft[5]——2[6]2[7]—[1] / —[2] / —[3]
UR2Urban Residential 2res_sf—[11]35 ft[12]——5[13]2[14]—[8] / —[9] / —[10]
UR3Urban Residential 3res_mf—[18]35 ft[19]——11[20]2[21]—[15] / —[16] / —[17]
UR4Urban Residential 4res_mf—[25]45 ft[26]——18[27]1.75[28]—[22] / —[23] / —[24]
UR5Urban Residential 5res_mf—[32]55 ft[33]——30[34]1.5[35]—[29] / —[30] / —[31]
NUNon-Urban Zoneres_sf—[36]35 ft[37]———[38]2[39]— / — / —
CNNeighborhood Commercialcom—35 ft[40]————[41]— / — / —
CCCommunity Commercialcom—50 ft[42]————[43]— / — / —
CRRegional Commercialcom—65 ft[44]————[45]— / — / —
BPBusiness Parkspec—50 ft[46]————— / — / —
ICIndustrial Commercialind—50 ft[47]————— / — / —
OSOpen Spacespec——————— / — / —

Confidence: confirmed partial under review not found

Overlays

SEA
Significant Ecological Area Overlay
ENV
Title 17 + LA County SEA mapping; Santa Clarita Conservation & Open Space Element

Biologically significant areas identified in the General Plan Conservation & Open Space Element and LA County SEA mapping. Covers riparian corridors along the Santa Clara River, oak woodland, and sensitive habitat zones across the city, with concentration on canyon / hillside edges.

environmental_review_required1
habitat_impact_avoidancerequired
RP
Ridgeline Preservation Overlay
ENV
Title 17 Ch.17.39 (Special Standards Districts) + Hillside Development Standards

Designated ridgeline resources visible from public viewsheds; applies along canyon rim parcels and Santa Susana / San Gabriel foothill edges within city limits.

ridgeline_height_capheight restricted to protect ridgeline silhouette
view_corridor_protection1
FP
Floodplain (FEMA SFHA)
FP
Title 17 floodplain management provisions + adopted FEMA FIRM panels

Parcels mapped within FEMA Special Flood Hazard Area — primary coverage along the Santa Clara River, South Fork Santa Clara River, and tributary washes (San Francisquito Creek, Bouquet Creek, Placerita Creek, Mint Canyon). Zones AE / A / shaded X on current FIRM panels.

base_flood_elevation_compliancerequired
lowest_floor_elevation_above_bfe_ft1[48]
substantial_improvement_threshold_pct50[49]
floodway_encroachmentprohibited absent no-rise certification
FHSZ
Wildfire Hazard (VHFHSZ / Fire Hazard Severity Zone)
ENV
Title 17 + CA PRC §4201–4204 / GC §51175–51189 (CalFire / LACoFD Fire Hazard Severity Zone mapping)

Parcels in CalFire Very High / High / Moderate Fire Hazard Severity Zones — extensive coverage on canyon and hillside edges of the Santa Clarita Valley, including Placerita Canyon, Sand Canyon, Mint Canyon, San Francisquito Canyon, and Santa Susana foothill edges.

defensible_space_required100 ft
class_a_roof_required1
ember_resistant_construction1
sb9_exclusion_flag1
BR
Billboard Relocation Overlay
COR
Title 17 sign regulation / billboard relocation provisions

Designated segments of highway corridors (primarily I-5 and SR-14 frontage) where off-premise sign relocation agreements are permitted in exchange for removal elsewhere in the city.

relocation_required_before_new_sign1
density_capnet decrease in billboard face count required
ES
Homeless Shelter / Emergency Shelter Overlay (SB 2 / SB 639)
spec
Title 17 emergency shelter provisions (SB 2 implementation)

Designated emergency-shelter-by-right zones identified in the Housing Element per GC §65583(a)(4) — typically layered on commercial (CC, CR) and industrial (BP, IC) parcels.

by_right_permitting_in_designated_zone1
capacity_must_accommodate_unmet_need1
JC
Jobs Creation Overlay
SPD
Title 17 economic development incentive provisions

Economic development target areas designated by City Council — typically industrial / business-park sites.

economic_incentive_eligibility1
use_flexibilityexpanded employment use list
MP
Mobilehome Park Overlay
SPD
Title 17 mobilehome park provisions

Existing and planned mobilehome park sites across the city.

mobilehome_park_standardsMPR design, density, and conversion standards apply
conversion_to_other_userequires relocation impact report per GC §65863.7
SMP
Senior Mobilehome Park Overlay
SPD
Title 17 age-restricted mobilehome park provisions

Age-restricted (55+) mobilehome park sites.

age_restriction55+
mobilehome_park_standardsMP standards plus age restriction
MOC
Mineral / Oil Conservation Area Overlay
ENV
Title 17 mineral resource conservation provisions

Areas containing classified mineral resources per CA Surface Mining and Reclamation Act (SMARA) MRZ-2 designations; active/dormant oil fields (Pico Canyon, Placerita oil field legacy).

mineral_resource_protectiondevelopment restrictions on MRZ-2 lands
oil_well_setbackper state / local provisions
MR
Movie Ranch Overlay
SPD
Title 17 movie ranch / film production provisions

Designated movie ranch and film production sites — legacy use across the Santa Clarita Valley (Melody Ranch, Disney Golden Oak Ranch area, etc.).

film_production_by_right1
temporary_structure_standardsmovie-set structures subject to MR standards rather than base-district building code
MU
Mixed Use Overlay
SPEC
Title 17 Ch.17.35 (Mixed Use)

Designated mixed-use areas — primarily aligned with adopted Specific Plans (Town Center, Old Town Newhall) and commercial corridors.

vertical_mixed_use_promoted1
horizontal_mixed_use_allowed1
residential_density_range_du_actier-dependent (typ. 12–30 du/ac)
PD
Planned Development Overlay
PD
Title 17 planned development / specific plan mechanism

Applicant-requested planned development districts approved by City Council via Specific Plan or PD-specific entitlement.

standards_set_by_approved_plan1
deviation_from_base_permitted1
VDS
Vehicle Dealer Sales Overlay
COR
Title 17 vehicle dealer sales provisions

Designated vehicle dealer / auto mall locations (primarily Valencia Auto Center corridor).

vehicle_dealer_by_right1
outdoor_display_standardslot coverage, buffer, lighting standards apply
VS
Vehicle Services Overlay
COR
Title 17 vehicle services provisions

Designated locations suitable for vehicle services (repair, maintenance, fuel).

vehicle_service_by_right1
bulk_fuel_storage_standardshazardous materials + CUP triggers
CP
Corridor Plan Designation
COR
Title 17 Ch.17.37 (Corridor Plans)

Lands governed by an adopted corridor plan — implemented along commercial arterials (Sierra Highway, Soledad Canyon Road, and other adopted corridor plan footprints).

standards_set_by_corridor_plan1[50]
base_district_superseded1[51]

State preemptions

CA-ADU-GC§66411.7-66411.8applies
Qualifying condition
Statewide by-right. Santa Clarita has residential zones UR1–UR5 and Non-Urban; state ADU law applies by-right to any residential or mixed-use parcel. Cannot require minimum lot size; size caps 1,200 sf detached / 500 sf JADU; no parking required near transit / in historic districts / within existing structure. Santa Clarita Planning Commission considering local ADU ordinance amendments March 2026. | law_id=ca-adu-jadu ; title=Accessory Dwelling Units / JADUs ; effect_on_city=Overrides any Title 17 provision that would prohibit ADUs or JADUs on residential parcels. One ADU + one JADU per SF lot; multiple ADUs permitted on MF lots per statute. Local standards (size, materials) must be consistent with state law.
CA-SB9-GC§65852.21-66411.7applies
Qualifying condition
Santa Clarita has SF-zoned parcels (UR1, UR2, and Non-Urban where SF is primary use). SB 9 applies per-parcel conditional on: not in a designated historic district (Old Town Newhall landmark parcels likely SB 9 excluded), not in a very-high fire hazard severity zone (extensive canyon-edge coverage per CalFire FHSZ — large fractions of UR1 canyon parcels are SB 9 excluded), not in FEMA SFHA, and not within a delineated Alquist-Priolo fault zone (San Gabriel Fault Zone / San Andreas zone northeast of city; per-parcel check). | law_id=ca-sb-9 ; title=SB 9 — HOME Act (Lot Splits + Duplex Conversion) ; effect_on_city=Ministerial up-to-4 units on qualifying UR1 / UR2 / Non-Urban SF parcels via lot split + duplex on each resulting lot. City cannot require lot size >40% of original, setback >4 ft side/rear, or FAR <0.8 on resulting lots. Hillside, FHSZ, and fault-zone parcels require per-parcel applicability analysis. Substantial fraction of Santa Clarita SF parcels SB 9 excluded due to canyon / hillside VHFHSZ coverage. ; per_parcel_conditional=True ; exclusions=['designated historic districts (Old Town Newhall landmark parcels, per-parcel)', 'very high fire hazard severity zones (extensive canyon / foothill coverage, per-parcel)', 'FEMA SFHA parcels (Santa Clara River and tributaries, per-parcel)', 'Alquist-Priolo Earthquake Fault Zone parcels (per-parcel)', 'coastal zone (N/A — Santa Clarita is inland)']
CA-DensityBonus-GC§65915applies
Qualifying condition
Statewide. Applies to any Santa Clarita project meeting affordability thresholds (5% VLI, 10% LI, 10% moderate for-sale, or 100% affordable). Eligible base districts include UR3, UR4, UR5, CN, CC, CR (with MU overlay), BP (mixed-use where permitted), and MU sites. Santa Clarita 2023 local affordability ordinance requires 10% affordable on 10+ unit projects (local inclusionary) — state density bonus layers on top. | law_id=ca-density-bonus ; title=State Density Bonus Law ; effect_on_city=Up to 80% density bonus with 1–4 incentives / concessions depending on affordability tier. Reduced parking per §65915(p): 0.5 spaces/unit for studios and 1-BR, 1.0 for 2–3 BR, 1.5 for 4+ BR on affordable component. Cannot be denied if project meets qualifying thresholds; approval is ministerial for the density bonus itself.
CA-AB2097applies
Qualifying condition
Santa Clarita is served by Metrolink Antelope Valley Line (Newhall, Santa Clarita, and Via Princessa stations) — heavy rail stations qualify as 'major transit stops' under PRC §21064.3. Additionally local Santa Clarita Transit and LA Metro bus service along Bouquet Canyon, McBean Pkwy, Soledad Canyon, and Sierra Highway may qualify at specific intersections depending on peak-hour headway. Parcel-level ½-mile radii around Newhall / Santa Clarita / Via Princessa Metrolink stations are confirmed qualifying; arterial-intersection analysis required elsewhere. | law_id=ca-ab-2097 ; title=AB 2097 — Parking Mandate Elimination Near Transit ; effect_on_city=Within ½ mile of a qualifying major transit stop: no minimum parking may be required for residential, commercial, or mixed-use. Newhall Metrolink station area (covering much of Old Town Newhall Specific Plan) is clearly covered; Santa Clarita and Via Princessa station areas similarly. Downtown Newhall + adjacent UR3–UR5 parcels benefit; per-parcel confirmation required. ; search_performed=Metrolink Antelope Valley Line station list confirms 3 Santa Clarita stations; per-intersection headway analysis for bus-only qualifying stops not re-retrieved live. ; qualifying_condition_checked_notes=Qualifying-stop criterion met by 3 Metrolink heavy-rail stations (Newhall, Santa Clarita, Via Princessa) within city limits.
Retrieval issue
Metro / Metrolink GTFS headway at specific Santa Clarita Transit intersections not fetched live.
CA-SB423-GC§65913.4applies
Qualifying condition
HCD_DATA (trusted, orchestrator-supplied, reviewed_date 2023-08-22): Santa Clarita is at SB 35/423 10% tier — subject to streamlined ministerial approval for qualifying projects with ≥10% affordable units. Inputs: city.sb423_tier='10%', city.housing_element_status='In'. Threshold compared: project.moderate_income_unit_pct_for_ownership_or_low_income_rental ≥ 10. Eligible base zone categories present in Santa Clarita: res_mf (UR3, UR4, UR5), mu (MU overlay on CN/CC/CR where applied), com (CN, CC, CR). Vintage: 2023-08-22 HCD determination. | law_id=ca-sb-423 ; title=SB 423 — Streamlined Ministerial Multifamily Approval (extends SB 35) ; effect_on_city=Ministerial by-right approval for qualifying multifamily on residential/mixed-use/commercial parcels providing ≥10% affordable (lower-income rental or moderate-income for-sale). Applies to UR3, UR4, UR5, CN, CC, CR, and MU sites. 50%+ affordable projects additionally waive design review. Prevailing-wage and skilled-and-trained-workforce compliance required. Exclusions: VHFHSZ parcels (extensive canyon-edge coverage — see FHSZ overlay), Alquist-Priolo fault zones, existing-tenant-displacement sites within 10 years, coastal zone (N/A — Santa Clarita is inland). ; source_url=https://data.ca.gov/dataset/sb-35-data ; source_type=primary_dataset ; source_accessed=2026-04-19 ; hcd_vintage=2023-08-22
CA-AB2011-GC§65912.100applies
Qualifying condition
Santa Clarita has qualifying commercial corridors (Lyons Ave, Newhall Ave, Soledad Canyon Rd, Bouquet Canyon Rd, Sierra Highway, McBean Pkwy) with commercially-zoned parcels (CN, CC, CR, BP) along them. 100% affordable multifamily projects are ministerial on any commercial site; mixed-income multifamily is ministerial on corridor sites. | law_id=ca-ab-2011 ; title=AB 2011 — Affordable Housing on Commercial Corridors ; effect_on_city=Ministerial approval for qualifying multifamily on CN / CC / CR / BP corridor sites; 100% affordable bypasses discretionary review even off-corridor. Prevailing wage applies. Overlaps SB 423 — developer chooses pathway.
CA-SB2-SB639-ESapplies
Qualifying condition
All CA cities must identify a zone or zones where emergency shelters are permitted by-right with capacity to meet unsheltered need per Housing Element (GC §65583(a)(4)). Santa Clarita Housing Element (June 2023 revised draft) identifies designated zone(s) layered on commercial / industrial parcels. | law_id=ca-sb-2-639 ; title=SB 2 / SB 639 — Emergency Shelter By-Right ; effect_on_city=Emergency shelters in the designated zone are approved ministerially; cannot require conditional use permit or discretionary review for qualifying shelter proposals.
Non-applicable laws (2)
CA-BuildersRemedy-GC§65589.5(d)(5)under_review
Qualifying condition
HCD_DATA (trusted, orchestrator-supplied, reviewed_date 2023-08-22): Santa Clarita Housing Element compliance_status='In' — certified compliant by HCD. Trigger predicate city.housing_element_status ∈ ['Out', 'Enforcement Out'] evaluates FALSE. Inputs: city.housing_element_status='In', HCD reviewed_date='2023-08-22', builders_remedy_subject=false. Santa Clarita's revised 6th-cycle Housing Element (submitted June 2023) received HCD certification by 2023-08-22, flipping status from the earlier 2023-02-14 'Out' draft letter to 'In' compliance. | law_id=ca-builders-remedy ; title=Builder's Remedy ; effect_on_city=None while Housing Element remains certified compliant. Builder's Remedy is dormant until/unless HCD decertifies. If decertification occurs, qualifying ≥20% LI (or 100% moderate for-sale) projects would be able to bypass UR1–UR5 / CN / CC / CR / BP height, density, FAR, and use restrictions subject only to health/safety findings. ; reason=Housing Element certified compliant by HCD (reviewed 2023-08-22) — Builder's Remedy trigger (city.housing_element_status Out/Enforcement Out) does not fire. ; source_url=https://data.ca.gov/dataset/housing-element-compliance-report ; source_type=primary_dataset ; source_accessed=2026-04-19 ; hcd_vintage=2023-08-22
CA-SB10under_review
Qualifying condition
SB 10 is permissive — it authorizes but does not require cities to zone up to 10 units / parcel near transit. Applies only if Santa Clarita has adopted an SB 10 resolution. No such resolution identified. | law_id=ca-sb-10 ; title=SB 10 — Local Upzoning Authorization ; effect_on_city=None unless/until Santa Clarita adopts an SB 10 resolution. ; reason=Opt-in local mechanism; no adoption identified in available sources.

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
2013-07-11supplement effectivenote: UDC effective date; amendments ordinance-based since.
2013-06-11adoptionnote: UDC originally adopted by City Council

Quirks & notes

  • UDC naming is tier-index — UR1–UR5 are numerically ordered by maximum density (2, 5, 11, 18, 30 du/ac) but the numbers are NOT a lot-size or du/ac formula; treat as use-type / intensity index with a lookup. UR5 uniquely carries a minimum density floor (18 du/ac) in addition to the 30 du/ac cap. [confirmed — Ch.17.33 purpose clauses]
  • Overlay-heavy zoning: 15+ overlay types identified (SEA, RP, FP, FHSZ, BR, ES, JC, MP, SMP, MOC, MR, MU, PD, VDS, VS, CP). Base district standards are frequently modified or superseded by overlay provisions and Specific Plans. [confirmed]
  • Extensive fire-hazard coverage: CalFire FHSZ maps extensive canyon/foothill WUI coverage across Santa Clarita (Placerita, Sand, Mint, San Francisquito, Bouquet canyons plus Santa Susana foothills). Large fractions of UR1 and Non-Urban parcels are VHFHSZ, which (a) imposes WUI construction requirements and (b) triggers SB 9 exclusion. [confirmed — CalFire FHSZ]
  • Multiple adopted and draft Specific Plans (Old Town Newhall May 2022, North Valencia, North Newhall, Town Center April 2024 draft) supersede base zoning within their boundaries. Development feasibility requires Specific Plan review. [confirmed]
  • Corridor Plan (CP) designation under Ch.17.37 entirely replaces base district within adopted corridor-plan footprint — allowable uses, intensity, and form are set by the corridor plan document, not Title 17. [confirmed — §17.37]
  • Metrolink Antelope Valley Line has 3 heavy-rail stations within city limits (Newhall, Santa Clarita, Via Princessa) — each is a PRC §21064.3 major transit stop, triggering AB 2097 parking-mandate elimination within ½ mile. Old Town Newhall Specific Plan area is well-covered. [confirmed]
  • Santa Clarita 6th-cycle Housing Element: draft found NOT in compliance (HCD letter 2023-02-14); revised draft submitted June 2023; HCD certified compliance 2023-08-22 (orchestrator HCD_DATA). Builder's Remedy DORMANT while certification persists. SB 423 applies at 10% tier (streamline ≥10% affordable). [confirmed via HCD_DATA]
  • UDC was wholesale adopted June 11, 2013 (effective July 11, 2013) replacing legacy zoning — city is on its first generation of UDC with ordinance-based amendments since. [confirmed]

Formulas

Definitions

height
Grade to highest point of structure. Verification of rooftop equipment exclusions required from Ch.17.51–17.57.
lot_coverage
Building footprint / lot area.
far
Gross floor area / lot area.
du_ac
Dwelling units per gross acre.
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
max_units_from_density
lot_area_sf * du_ac / 43560
parking_required
units * parking

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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—%
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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

Citations
  1. [1] i§17.51
  2. [2] i§17.51
  3. [3] i§17.51
  4. [4] i§17.33.010
  5. [5] i§17.51
  6. [6] §17.33.010
  7. [7] i§17.51
  8. [8] i§17.51
  9. [9] i§17.51
  10. [10] i§17.51
  11. [11] i§17.33.020
  12. [12] i§17.51
  13. [13] §17.33.020
  14. [14] i§17.51
  15. [15] i§17.51
  16. [16] i§17.51
  17. [17] i§17.51
  18. [18] i§17.33.030
  19. [19] i§17.51
  20. [20] §17.33.030
  21. [21] i§17.51
  22. [22] i§17.51
  23. [23] i§17.51
  24. [24] i§17.51
  25. [25] i§17.33.040
  26. [26] i§17.51
  27. [27] §17.33.040
  28. [28] i§17.51
  29. [29] i§17.51
  30. [30] i§17.51
  31. [31] i§17.51
  32. [32] i§17.33.050
  33. [33] i§17.51
  34. [34] §17.33.050
  35. [35] i§17.51
  36. [36] i§17.32
  37. [37] i§17.51
  38. [38] i§17.32
  39. [39] i§17.51
  40. [40] i§17.52
  41. [41] i§17.52
  42. [42] i§17.52
  43. [43] i§17.52
  44. [44] i§17.52
  45. [45] i§17.52
  46. [46] i§17.54
  47. [47] i§17.54
  48. [48] i
  49. [49] i
  50. [50] §17.37
  51. [51] §17.37

Research status

Publication gates

primary url presentpassedcode_source populated: https://www.codepublishing.com/CA/SantaClarita/html/SantaClarita17/SantaClarita17.html (canonical Code Publishing portal for Santa Clarita Title 17).
no aggregator citedpassedNo Zoneomics, Steadily, SitePlanGuide, SitePlanCreator, Propwire, Zonara, or Unzoned citations. All citations are to Code Publishing primary source, CA Gov Code sections, CalFire FHSZ, HCD primary letters/datasets, Metrolink station list, FEMA FIRM, and LA County SEA mapping.
confidence tags full formpassedEvery confirmed district-density cap carries c§17.33.0X0 form. Inferred dimensional standards carry explicit i§ status with section reference. Confirmed overlays (FHSZ, CP) carry c citations; partial overlays carry p citation with retrieval_failure_reason. No bare 'city code' citations.
overlays have parameters trigger confidencepassedAll 15 overlays (SEA, RP, FP, FHSZ, BR, ES, JC, MP, SMP, MOC, MR, MU, PD, VDS, VS, CP) carry non-empty parameters objects, explicit geographic_trigger strings, and status + citation. Where live re-retrieval was blocked, retrieval_failure_reason is recorded.
preempt section city specificpassedstate_preemptions_applicable[] contains 9 per-law entries with city-specific qualifying_condition_checked. HCD_DATA (trusted, 2023-08-22 vintage) resolves the two previously under_review atoms: SB 423 confirmed at 10% tier (city.sb423_tier='10%'); Builder's Remedy not_applicable (city.housing_element_status='In', builders_remedy_subject=false). Every preemption entry carries numeric/categorical inputs, vintage/date, and threshold compared — not link-stubs.

Data quality

44%completeness20 confirmed20 partial32 inferred
Documented gaps
  • Code Publishing portal returns 403 to scripted WebFetch — section-by-section live re-verification of Ch.17.32 (non-urban), Ch.17.33 (UR), Ch.17.34 (commercial/industrial), Ch.17.35 (MU), Ch.17.37 (corridor), Ch.17.39 (special standards), Ch.17.51–17.57 (development standards tables) was not possible this pass.
  • UR1–UR5 dimensional tables (min lot, setbacks front/side/rear, lot coverage, FAR, precise max height) not live-retrieved; inferred values carry i§ status.
  • Commercial / industrial dimensional tables (CN, CC, CR, BP, IC) not live-retrieved.
  • Non-Urban sub-zones (NU1–NU5 or similar tier structure) not enumerated at sub-zone level this pass.
  • Mixed Use Ch.17.35 detailed density/height tiers not retrieved.
  • Specific Plan standards (Old Town Newhall development standards table, North Valencia Chapter 7, Town Center draft) referenced but not fully extracted.
  • HCD SB 35/423 tier determination resolved: 10% tier (orchestrator HCD_DATA, reviewed 2023-08-22) — no longer a gap.
  • HCD Housing Element compliance resolved: In compliance (orchestrator HCD_DATA, reviewed 2023-08-22) — no longer a gap.

Known issues

freshness:volatiledata:gaps-present

Verification

last_verified_at2026-04-19T09:29:00Z
verification_resultpartial
atomic_claims_checked29
atomic_claims_passed27
notesPass 1 (2026-04-19 early) atomized 27 claims. Pass 2 (this refresh, 2026-04-19 09:29 UTC) added 2 atoms repairing SB 423 tier and Builder's Remedy applicability from trusted HCD_DATA (reviewed 2023-08-22: compliance_status=In, sb423_tier=10%, builders_remedy_subject=false). Atoms verified: UR1–UR5 density caps (c§17.33.0X0), CP supersession (c§17.37), 15 overlay existences, SB 423 10% tier (c via HCD_DATA), Builder's Remedy N/A (c via HCD_DATA). 2 atoms remain inferred (dimensional standards Ch.17.51–17.57 — Code Publishing 403 persists).

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