Ventura County Zoning, Planning & Building Codes

Last reviewed: July 6, 2026

Overview

Ventura County regulates land use in its unincorporated areas through the Non‑Coastal Zoning Ordinance (NCZO). The NCZO sets the base zoning districts, overlays, use matrices, development standards, and the permitting process; separate rules apply inside the California Coastal Zone under the County’s certified Coastal program. The NCZO explicitly governs the unincorporated areas outside the Coastal Zone and ties zoning to the County General Plan and official zoning data maps.

Most projects in unincorporated Ventura County start with your base zone in the Official Zoning Data, then layer on any applicable overlay zone(s), area plan standards, Article 8 parking, and—if in Old Town Saticoy—the form‑based Old Town Saticoy Development Code. The NCZO is the controlling text for non‑Coastal unincorporated areas.

How Ventura County’s code is organized

• Name and scope. The County’s zoning rules are codified as the “Non‑Coastal Zoning Ordinance,” which applies in the unincorporated area outside the Coastal Zone; if a parcel is split by the Coastal boundary, Coastal Act/LCP policies may condition the non‑Coastal portion. See § 8101‑0 (title), § 8101‑1 (purpose), and § 8101‑2.2 (lots split by the Coastal Zone).
• Official Zoning Data. Zoning designations and maps are maintained by the County and adopted by ordinance; consult Article 18 (e.g., § 8118‑0.1) to locate the official map set.
• Uses by zone. Article 5 publishes two matrices—uses in open space/agricultural/residential/special purpose zones (§ 8105‑4) and in commercial/industrial zones (§ 8105‑5)—and explains the permit keys (E, ZC, PD, CUP) in § 8105‑1.1.
• Development standards. Dimensional standards (lot area, setbacks, height, coverage) are consolidated in § 8106‑1.1 (OS/AE/R zones) and § 8106‑1.2 (C/M/special purpose), with measurement and exceptions elsewhere in Article 6. Area Plan‑specific lot coverage tables live in § 8106‑1.4.1.1.x.
• Overlays and special standards. Overlay zones are established in § 8103‑0 and detailed in Article 4 (purposes) and Article 9 (standards for specific zones and zone types), including habitat connectivity/wildlife corridor overlays.
• Old Town Saticoy. A form‑based code is incorporated as Article 19’s Old Town Saticoy Development Code (OTSDC), governing land uses and building form in Saticoy’s town center.

Navigate from Ventura County Zoning to the Ventura County Land Use matrices and Ventura County Development Standards for project checks.

Zoning district families

Ventura County’s base zones, abbreviations, and minimum lot areas are defined in § 8103‑0. Highlights:

• Open space/agriculture
  • OS‑REC (Open Space—Parks & Recreation, 10 ac), OS (Open Space, 10 ac), AE (Agricultural Exclusive, 40 ac).
• Rural and urban residential
  • RA (1 ac), RE (10,000 sf), RO (20,000 sf), R1 (6,000 sf), R2 (7,000 sf), RHD (Residential High Density, 0.80 ac).
• Commercial and industrial
  • CO (Commercial Office), C1 (Neighborhood Commercial), CPD (Commercial Planned Development), M1 (Industrial Park, 10,000 sf), M2 (Limited Industrial, 10,000 sf), M3 (General Industrial, 10,000 sf), TP (Timberland Preserve, 160 ac).
• Specific plan and Old Town Saticoy zones (Article 19)
  • SP (as a plan), and OTSDC districts: RES, R/MU, TC, IND.

Overlay zones (additive to a base zone) include SRP (Scenic Resource Protection), MRP (Mineral Resource Protection), CBD (Community Business District), TRU (Temporary Rental Unit Regulation), DKS (Dark Sky), HCWC (Habitat Connectivity & Wildlife Corridors), and CWPA (Critical Wildlife Passage Areas). Overlays are established in § 8103‑0 and implemented in Article 4 and Article 9 (e.g., § 8109‑4.8, § 8109‑4.9). See Ventura County Overlay Districts.

Citywide development standards

Where to look:

• Dimensional standards by zone: § 8106‑1.1 (OS/AE/R) and § 8106‑1.2 (C/M/special purpose); height measurement § 8106‑1.3; exceptions in § 8106‑5 and § 8106‑6; special elements (fences, landscaping) in § 8106‑8.
• Lot coverage often follows Area Plan tables in § 8106‑1.4.1.1.x (e.g., North Ventura Avenue, Oak Park, Ojai Valley, Piru).

Selected examples:

• The CO district shows a typical 20 ft front and 5 ft side setback, 25 ft height cap, with potential increase to 60 ft by decision‑making authority per § 8106‑1.2.
• In industrial districts, M1 commonly caps at 30 ft but may increase to 60 ft with approval per § 8106‑1.2; additional buffers may apply next to residential zones.
• In residential high density (RHD), the general maximum structure height is 35 ft per the § 8106‑1.1 schedule.

Parking and bicycles: Article 8 sets countywide parking numbers, design, reserve stalls, and bicycle parking. For example, single‑family and two‑family dwellings need 2 covered spaces for 1–4 bedrooms; ADU‑related parking replacements are not required when a garage/carport is converted to an ADU (see footnote citing § 8107‑1.7.5(c)(3)). Multifamily ratios are in § 8108‑4.7.1.

Landscaping: Commercial districts typically require at least 10% of the permit area landscaped (e.g., CO, C1, CPD) under Article 9’s standards; see § 8109‑0.6.1 to ‑0.6.3.

Signage and nonconformities: County sign location/prohibitions are in Article 10 (e.g., § 8110‑5‑2, § 8110‑4(i)), and nonconforming rules are centralized in Article 13; see Ventura County Historic Preservation for cultural heritage coordination and Article 13 citations listed in § 8107‑37.3(k).

Specific plans & overlays

• Area Plan standards. The NCZO “plugs in” Area Plan‑specific coverage tables (e.g., North Ventura Avenue, Oak Park, Ojai Valley, Piru) via § 8106‑1.4.1.1.x—check your Area Plan table first when computing lot coverage.
• Old Town Saticoy Development Code (OTSDC). Within Old Town Saticoy, the OTSDC controls zones (TC, R/MU, RES, IND), permitted uses, and a form‑based framework—building placement, frontage types, building types, and localized parking adjustments. See § 8119‑1 and the zone standards at § 8119‑1.3–1.8.
• Habitat and wildlife overlays. The HCWC and CWPA overlays add siting setbacks from structures like bridges/culverts and surface water features and may require a Planning Director‑approved Planned Development Permit where encroachment occurs; see § 8109‑4.8.3.4–.5 and § 8109‑4.9.
• Scenic/mineral overlays. Purposes and triggers for SRP and MRP are in Article 4 (e.g., § 8104‑7.1, § 8104‑7.2), with development controls cross‑referenced in Article 9.

Building permits & review

• Zoning Clearance (ministerial). Many uses/structures in the matrices require a Zoning Clearance; issuance standards and expiration rules are in § 8111‑1.1.1(b–c). The County will confirm consistency with zoning, legal lot status, business license compliance, and other County programs before issuance.
• Discretionary permits. When the matrices call for them, a Planned Development (PD) Permit or Conditional Use Permit (CUP) is required; approval standards are in § 8111‑1.2.1.1. The matrices’ permit keys and decision bodies are explained in § 8105‑1.1.
• Variances and minor relief. Variances can adjust certain standards—e.g., reduce setbacks up to 20%, allow walls/fences/hedges to exceed height by 1 ft in setbacks (outside sight triangles), or increase lot coverage/sign area/height by up to 10%—with duration provisions in § 8111‑1.2.2.5. See Ventura County Design Review for how these hearings function in practice.
• Cultural heritage projects. For designated cultural heritage sites, the County can grant tailored deviations through a PD Permit if added findings/standards are met (§ 8107‑37.1–.6), often alongside certificates issued under the Cultural Heritage Ordinance.
• Building permits. After land use approval (if any), construction must comply with the California Building Standards Code; the NCZO ties Zoning Clearance timing and validity to your building permit submittal window (180 days) in § 8111‑1.1.1(c).

State housing law in Ventura County

• ADUs/JADUs. Ventura County implements state ADU law in § 8107‑1.7, which declares ADUs/JADUs consistent with the General Plan and zoning and defers to state law on conflicts. State law guarantees at least an 800 sf ADU envelope with 4‑ft side/rear setbacks and sets height allowances (e.g., 16–18 ft detached; up to 25 ft attached), plus limits on parking and treatment of nonconformities. See § 8107‑1.7.1 locally and the state summary in the 2025 ADU guidance.
  • The County’s parking table reflects ADU exemptions and clarifies that when a garage/carport is converted/demolished for an ADU, replacement parking is not required (see footnote citing § 8107‑1.7.5(c)(3)).
• Density bonus/SB 9 and other state mandates. A density bonus/SB 9 implementation section was not found in the retrieved NCZO excerpts. Not found in retrieved materials—verify with the jurisdiction. For statewide requirements, see California housing laws.

Source References

• Non‑Coastal Zoning Ordinance scope and Coastal boundary rules: § 8101‑0, § 8101‑1, § 8101‑2.2.
• Official Zoning Data (maps) and adoption mechanics: § 8118‑0.1, § 8103‑3–8103‑6.
• Base zones, overlays, and abbreviations: § 8103‑0; lot area suffixes § 8103‑1.
• Use matrices and permit keys: § 8105‑0–8105‑1.3.
• Development standards schedules: § 8106‑1.1, § 8106‑1.2, and Area Plan coverage tables § 8106‑1.4.1.1.x.
• Parking and multifamily ratios: § 8108‑4.7.1; ADU‑parking notes.
• Landscaping minimums (commercial): § 8109‑0.6.1–0.6.3.
• Discretionary permit approval standards: § 8111‑1.2.1.1; Zoning Clearance issuance/expiration: § 8111‑1.1.1(b–c).
• Cultural heritage PD deviations and conditions: § 8107‑37.1–.6.
• HCWC/CWPA overlays: § 8109‑4.8, § 8109‑4.9.
• ADUs/JADUs (local and state): § 8107‑1.7; 2025 state summary.