Local zoning · Ventura County

Ventura County — Development Standards

Development Standards under the Ventura County local zoning and planning code, with the controlling citations.

Last reviewed: July 6, 2026

Overview

In unincorporated areas, Ventura County’s Non‑Coastal Zoning Ordinance sets lot area, setbacks, height, and building lot coverage by zone in Article 6, with overlays and area plans layering in additional rules. The ordinance applies to unincorporated land outside the Coastal Zone and is formally titled the Non‑Coastal Zoning Ordinance (NCZO) (§ 8101‑0; § 8101‑1; § 8101‑2.2 ). Development standards are schedule‑driven: use the zone’s matrix in § 8106‑1, then check whether an area plan, mapped Existing Community, or overlay modifies those baselines (§ 8106‑0; § 8106‑1; § 8106‑1.4 ).

The single most important rule: Find your base zone and suffix, then verify whether your lot sits in a mapped Existing Community, area plan, or overlay—these can change the allowed lot coverage, setbacks, and height for unincorporated projects (§ 8103‑1.1; § 8106‑1; § 8106‑1.4; Article 9 overlays ).

Link up with the broader Ventura County Zoning and Ventura County Land Use pages to place these development standards in context.

How the code is organized for development standards

Article 6 establishes zone‑by‑zone schedules for lot area, setbacks, height, and building lot coverage (§ 8106‑0; § 8106‑1 ).
Minimum lot area often uses a suffix (e.g., RE‑20 = 20,000 sf); suffixes can increase the base minimum (§ 8103‑1.1 ).
Lot coverage varies by location—area plans, mapped Existing Communities, or “outside” areas use different tables (§ 8106‑1.4.1.1; § 8106‑1.4.1.2; § 8106‑1.4.1.3 ).
Special setback rules govern flag/irregular/through lots, accessory structures, garage aprons, oil/gas well buffers, distance between structures, and wildlife‑crossing buffers (§ 8106‑4.3; § 8106‑4.4; § 8106‑5; § 8106‑6; § 8106‑6.5 ).
Old Town Saticoy uses Article 19’s development code for its RES, R/MU, TC, and IND zones (§ 8119‑1; § 8106‑1.4.1.1.8(1) ).

Also see Ventura County Overlay Districts for standards that may supersede base zones.

Residential and Open Space/Agriculture base zones (Article 6 § 8106‑1.1)

Use the § 8106‑1.1 matrix to confirm minimum lot area, setbacks, heights, and how coverage is assigned by location. Minimum lot area may be increased by a suffix (e.g., RA‑2 ac), per § 8103‑1.1.

OS‑REC

Purpose/use: Open space recreation (typical park/conservation contexts; verify uses with the jurisdiction). Not found in retrieved materials (purpose text).
Key standards: Minimum lot area generally 10 acres; setbacks and height per the § 8106‑1.1 matrix (§ 8106‑1.1 ).

OS

Key standards: Minimum lot area generally 10 acres; example front setback shows 10 ft in the matrix; confirm side/rear by table; height measured per § 8106‑1.3 (§ 8106‑1.1; § 8106‑1.3 ).

AE

Key standards: Minimum lot area generally 40 acres; coverage governed by § 8106‑1.4 tables; height limits per matrix; measurement per § 8106‑1.3 (§ 8106‑1.1; § 8106‑1.3 ).

RA

Key standards: Minimum lot area 1 acre (suffix can enlarge); typical front setback indicated as 20 ft in the matrix; height for principal structures often 35 ft; coverage per § 8106‑1.4 (§ 8106‑1.1; § 8106‑1.4 ).

RE

Key standards: Base minimum lot area 10,000 sf (suffix may increase, e.g., RE‑20 = 20,000 sf); matrix indicates interior sides around 15 ft and rear 25 ft in at least one row; verify for your suffix; coverage per § 8106‑1.4 (§ 8106‑1.1; § 8103‑1.1; § 8106‑1.4 ).

RO

Key standards: Base minimum lot area 20,000 sf (suffix may increase); matrix shows examples like 5 ft (front/side references appear in the table—verify); coverage via § 8106‑1.4 (§ 8106‑1.1; § 8106‑1.4 ).

R1

Key standards: Base minimum lot area 6,000 sf; setbacks/height per matrix; in many Existing Communities, coverage can be as high as 45% on 6,000‑sf R1 lots (see Table 8) (§ 8106‑1.1; § 8106‑1.4.1.2 ).

R2

Key standards: Base minimum lot area 7,000 sf; minimum lot area per unit 3,500 sf; setback/height per matrix; Existing Communities coverage up to 50% in Table 8 (§ 8106‑1.1 n.4; § 8106‑1.4.1.2 ).

RHD

Key standards: The matrix lists RHD with principal height 35 ft; density context references state minimums (e.g., Government Code density note in § 8106‑1.1 n.6); coverage may be governed by area plan or Existing Community table (§ 8106‑1.1; § 8106‑1.4.1.1; § 8106‑1.4.1.2 ).

RPD

Key standards: Dimensional standards and density set “as specified by permit;” principal structure height commonly 35 ft per the matrix; check the discretionary permit for your project (§ 8106‑1.1 n.7 ).

Commercial, Industrial, Special Purpose zones (Article 6 § 8106‑1.2)

CO

Typical focus: Office/commercial. Not found in retrieved materials (purpose text).
Key standards: Front setback 20 ft; side 5 ft; principal height 25 ft; increases up to 60 ft can be allowed with approval referenced in § 8105 (§ 8106‑1.2 ).

C1

Typical focus: General commercial. Not found in retrieved materials (purpose text).
Key standards: Corner‑lot front 5 ft; otherwise per permit; side 5 ft if adjacent to an R‑zone; height per matrix (Planning Commission approval may be required for increases) (§ 8106‑1.2 ).

CPD

Typical focus: Planned commercial development. Not found in retrieved materials (purpose text).
Key standards: Setbacks “as specified by permit;” height 35 ft (§ 8106‑1.2 ).

TP

Key standards: Minimum lot area 160 acres; setbacks and height per permit; principal height 25 ft (§ 8106‑1.2; n.2 cross‑reference § 8109‑4.3.6 ).

M1

Key standards: Minimum lot area 10,000 sf; street setback 20 ft; side yard 5 ft if adjacent to an R‑zone; principal height 30 ft, with possible increase up to 60 ft with approval; a 30‑ft setback with opaque screening may be required where industrial abuts or faces R‑zones (§ 8106‑1.2 & n.3 ).

M2

Key standards: Street setback 15 ft; additional adjacency and screening may be required per footnote; height per matrix (§ 8106‑1.2 & n.3 ).

M3

Key standards: Street setback 10 ft (per matrix row); when within 100 ft of an R‑zone, maximum height is 60 ft; other standards by permit (§ 8106‑1.2 ).

SP

Key standards: Established by the adopted specific plan; see § 8109‑4.2 (§ 8106‑1.2 ).

Old Town Saticoy zones (Article 19 — § 8119‑1)

Lots in the Saticoy Area Plan’s Old Town Saticoy mapped area follow Article 19—Old Town Saticoy Development Code—for allowable uses and development standards (§ 8106‑1.4.1.1.8(1) ).

Zones include RES, R/MU, TC, IND with building‑type standards (e.g., max heights typically 2–3 stories/40–50 ft by type). For example, the “Industrial Building” type caps at 2 stories/45 ft in the IND zone (§ 8119‑1.4.9 ). Other building types show 2–3 stories and 40–50 ft in their tables (§ 8119‑1.4.4 et seq. ).
West/South Industrial mapped areas in Saticoy: maximum building lot coverage is 50% (§ 8106‑1.4.1.1.8(2) ).

For projects needing aesthetics review, see Ventura County Design Review and Ventura County Historic Preservation (Saticoy has cultural heritage standards in Article 19; § 8119‑1.8.4 ).

Lot coverage framework (Article 6 § 8106‑1.4)

In mapped Existing Communities (Table 8), the County assigns maximum building lot coverage by zone and minimum lot size. Examples: R1‑6,000 sf = 45%, R1‑10,000 sf = 36%, R2‑7,000 sf = 50%, RE‑10,000 sf = 36%, RA = 25% (§ 8106‑1.4.1.2, Table 8 ).
Area plans have their own coverage tables (e.g., Oak Park, Ojai Valley, Piru). Commercial and community facility designations in these plans often allow 60% coverage, while open space designations are often 5% (§ 8106‑1.4.1.1, Tables 3–6 ).
Las Posas Estates and some area plans exclude certain plant‑growing structures from coverage and provide special formulas for small/nonconforming lots (§ 8106‑1.4.1.2a; § 8106‑1.4.1.1.5a; § 8106‑1.4.1.1.6a ).

Height limits and how height is measured

Heights are set in the zone matrices; measurement is defined by grade conditions:
- Flat grades: measured from grade to roof peak or averaged midpoint for pitched roofs (§ 8106‑1.3.1 ).
- Sloping grades: measured from an averaged grade to the highest point or averaged midpoint (§ 8106‑1.3.2 ).

Setbacks and special setback rules you must know

Setbacks are minimum horizontal distances from lot lines; measured to exterior walls/structural supports (§ 8106‑6(b) ).
Flag/irregular/through lots have special rules (§ 8106‑4.3; § 8106‑4.4 ).
Distance between structures on the same lot: generally 6 ft; 10 ft between detached dwellings (§ 8106‑6.1(a)(2) ).
Garage/carport apron: provide a 20‑ft driveway apron from the lot line to the garage/carport door (§ 8106‑6.2 ).
Accessory structures in rear/side setbacks: as close as 3 ft from interior/rear lot lines, with limits on the portion of rear yard occupied (§ 8106‑5.1 ).
Oil/gas well buffers: dwellings generally discouraged within 800 ft; allowed closer with recorded disclosure but never less than 100 ft (§ 8106‑6.3 ).
Wildlife crossing setbacks (northern unincorporated area): a 200‑ft setback around listed crossing structures with broad prohibitions on new development within that buffer unless exempt/excepted (§ 8106‑6.5; § 8106‑6.5.2; Tables 1–2 ).

For parking layout and counts, use Ventura County Parking.

Accessory Dwelling Units (how they interact with development standards)

Many ADUs in unincorporated areas are approved by building permit and are expressly not subject to local development standards for size, setback, parking, or lot coverage when they meet § 8107‑1.7.4 (state‑mandated pathways). Detached and internal ADU pathways include universal 4‑ft side/rear setbacks in qualifying cases (§ 8107‑1.7.4; § 8107‑1.7.4(f) ). For state context, see California ADU law.

Variances and small adjustments

Variances can adjust setbacks, height, coverage, etc., but cannot authorize a prohibited use (§ 8111‑1.2.2 ).
Administrative variances can allow: up to 20% decrease in required setbacks; up to +1 ft extra fence/wall height in setbacks; up to +10% increase in maximum building lot coverage (§ 8111‑1.2.2.4(a)–(c) ).
Variances run with the land; durations/conditions may be imposed (§ 8111‑1.2.2.5 ). See Ventura County Variances and Exceptions.

Selected development standards (quick reference)

Zone	Minimum Lot Area	Example Street Setback or Note	Principal Height	Lot Coverage (if in Mapped Existing Community)	Code Reference
R1	6,000 sf (suffix may increase)	Per § 8106‑1.1 matrix	Per matrix	45% at R1‑6,000; 36% at R1‑10,000	§ 8106‑1.1; § 8106‑1.4.1.2 (Table 8)
R2	7,000 sf; min lot area per DU 3,500 sf	Per § 8106‑1.1 matrix	Per matrix	50% at R2‑7,000	§ 8106‑1.1 n.4; § 8106‑1.4.1.2 (Table 8)
RE‑10k	10,000 sf base (suffix may increase)	Per § 8106‑1.1 matrix	Per matrix	36% at 10,000 sf	§ 8106‑1.1; § 8106‑1.4.1.2 (Table 8)
RA	1 acre base (suffix may increase)	Front often shown as 20 ft; verify	Typically 35 ft	25%	§ 8106‑1.1; § 8106‑1.4.1.2 (Table 8)
M1	10,000 sf	Street 20 ft; side 5 ft when adjacent to R‑zone	30 ft; up to 60 ft w/ approval	See area plan/EC tables	§ 8106‑1.2 & n.3
CO	No minimum	Front 20 ft; side 5 ft	25 ft; increases via § 8105	See area plan/EC tables	§ 8106‑1.2

Note: “Suffixes” (e.g., RE‑20 = 20,000 sf) alter minimum lot area (§ 8103‑1.1 ). “EC” means mapped Existing Community (Table 8).

Additional, frequently‑missed standards

Accessory structures in setbacks; through‑lot front yard choices; “swing driveway” exceptions; building additions along nonconforming side yards; mailbox supports; all are covered in Article 6 exceptions (§ 8106‑5.1 to § 8106‑5.16; sample: § 8106‑5.11; § 8106‑5.15; § 8106‑5.16 ).
Industrial adjacency may trigger a 30‑ft setback and opaque screening where next to R‑zones (§ 8106‑1.2 n.3; coordinate early with Ventura County Landscaping and Screening ).
Signs are regulated separately; see Ventura County Signage (definitions referenced to Article 10; § 8101 definitions excerpt notes) .
Nonconforming situations are handled under Ventura County Nonconforming Uses; Article 6 includes targeted allowances (e.g., building additions) (§ 8106‑5.15 ).

Information Gaps

Exact numeric front/side/rear setbacks for every residential zone/suffix combination: Not found in retrieved materials (use § 8106‑1.1 matrix directly) .
Zone purpose statements and full permitted‑use lists by district: Not found in retrieved materials (see Article 5 use matrices).
Countywide FAR standards: Not found in retrieved materials.

Checklist

Confirm your parcel is in unincorporated Ventura County and outside the Coastal Zone (§ 8101‑1; § 8101‑2.2) . See Ventura County zoning & planning overview.
Identify the base zone and any lot‑area suffix (e.g., RE‑20) (§ 8103‑1.1) .
Pull dimensional standards from the § 8106‑1 matrix for your zone (lot area, setbacks, height) (§ 8106‑1) .
Determine which coverage table applies: area plan, mapped Existing Community, or “outside”—and compute maximum coverage (§ 8106‑1.4.1.1; § 8106‑1.4.1.2; § 8106‑1.4.1.3) .
Check overlay zones (e.g., HCWC, CWPA) that may add setbacks or restrict site features (Article 9; § 8109‑4.8; § 8109‑4.9) .
If in Old Town Saticoy, use Article 19 building‑type standards (§ 8119‑1) .
Apply special setback rules: flag/through lots, accessory structures, garage apron, inter‑building distance, oil/gas buffers, wildlife crossings (§ 8106‑4.3; § 8106‑4.4; § 8106‑5; § 8106‑6; § 8106‑6.5) .
Determine if the project includes an ADU that qualifies for the streamlined path (many local standards do not apply) (§ 8107‑1.7.4; § 8107‑1.7.5) .
Coordinate any needed variances/adjustments early; minor administrative variances may resolve small deltas (§ 8111‑1.2.2.4) and full variances are also available (§ 8111‑1.2.2) .
Align site design with Ventura County Parking and, if applicable, Ventura County Design Review.

Risks & Ambiguities

Issue	Why it matters	What to verify
Existing Community mapping	Changes your max lot coverage materially	Confirm whether the lot is inside a mapped Existing Community before calculating coverage (§ 8106‑1.4.1.2)
Lot‑area suffix	Can increase minimum lot size beyond the base zone	Read the zoning map label (e.g., RE‑20) and apply § 8103‑1.1 rules
Old Town Saticoy applicability	Article 19 replaces many Article 6 metrics	Check if your parcel is within the Old Town Saticoy mapped area (§ 8106‑1.4.1.1.8)
Overlay zones (HCWC/CWPA)	May add setbacks, limit fencing/lighting, and require biology documentation	Overlay boundaries and approval findings under Article 9 (§ 8109‑4.8; § 8109‑4.9)
Industrial adjacency to R‑zones	Can trigger 30‑ft setback + opaque screening	If M‑zoned next to or across from R‑zone, review § 8106‑1.2 n.3 early
Oil/gas wells	Dwelling placement limits	Title notice and minimum clearances (§ 8106‑6.3)
Flag/through/irregular lots	Changes which sides count as “front”/“rear”	Apply § 8106‑4.3 and § 8106‑4.4 illustrations and rules
ADUs	Many local standards don’t apply to qualifying ADUs	Confirm your ADU qualifies under § 8107‑1.7.4 before applying local coverage/setback rules

Plain-English Summary

For unincorporated Ventura County, start with your zone’s schedule for lot size, setbacks, height, and where to pull maximum lot coverage. Then, check if your parcel is in a mapped Existing Community, an area plan, or an overlay—those often override coverage and setbacks. Many ADUs avoid local coverage/parking/setback rules when they qualify for the state‑mandated, ministerial path.

Source References

Non‑Coastal Zoning Ordinance title/applicability: § 8101‑0; § 8101‑1; § 8101‑2.2
Article 6 purpose and matrices: § 8106‑0; § 8106‑1; § 8106‑1.1; § 8106‑1.2
Height measurement: § 8106‑1.3.1; § 8106‑1.3.2
Coverage by location: § 8106‑1.4.1.1 (Area Plans); § 8106‑1.4.1.2 (Existing Communities)
Saticoy Area Plan/Old Town Saticoy: § 8106‑1.4.1.1.8; Article 19 (§ 8119‑1; § 8119‑1.4.4; § 8119‑1.4.9)
Special setback rules: § 8106‑4.3; § 8106‑4.4; § 8106‑5.1; § 8106‑5.15; § 8106‑6.1; § 8106‑6.2; § 8106‑6.3; § 8106‑6.5
Overlays (HCWC/CWPA): § 8109‑4.8; § 8109‑4.9
ADUs: § 8107‑1.7.4; § 8107‑1.7.4(f); § 8107‑1.7.5
Lot‑area suffix system: § 8103‑1.1
Variances: § 8111‑1.2.2; § 8111‑1.2.2.4; § 8111‑1.2.2.5

Sources

Retrieved passages

Ventura County Zoning Code (§ 4) High relevance
Ventura County Zoning Code (§ 8) High relevance
Ventura County Zoning Code (Article 6) High relevance
Ventura County Zoning Code (Section 8105) High relevance
CBC § 3 (§ 3) High relevance
Ventura County Zoning Code (§ 8) High relevance
Ventura County Zoning Code (§ 3) High relevance
CFC § 3 (Section 8107-1.7.4) High relevance
Ventura County Zoning Code (Article 19) High relevance
Ventura County Zoning Code (§ 3) High relevance
Ventura County Zoning Code (§ 3) High relevance
Ventura County Zoning Code (Article 5.) High relevance

Cited sections

Official Ventura County code library

Frequently asked questions

What can I build on an R1 lot in unincorporated Ventura County?

Use the § 8106‑1.1 matrix for R1 to confirm minimum lot area (often 6,000 sf) and apply setbacks/height. If the lot is inside a mapped Existing Community, check Table 8 for maximum lot coverage (e.g., 45% for R1‑6,000); outside those areas, use the applicable § 8106‑1.4 table instead (§ 8106‑1.1; § 8106‑1.4.1.2) .

What are Ventura County setback requirements for garages and accessory structures?

Provide a 20‑ft driveway apron from the front lot line to any garage/carport. Detached accessory structures not for habitation can sit as close as 3 ft to interior/rear lot lines, subject to limits on rear‑yard coverage (§ 8106‑6.2; § 8106‑5.1) .

How is building height measured on sloped lots?

Height is measured from an averaged grade to the roof’s highest point or averaged midpoint for pitched roofs. The code includes figures and step‑by‑step rules for flat vs. sloping sites (§ 8106‑1.3.1; § 8106‑1.3.2) .

Do industrial sites have extra setbacks next to homes?

Yes. M‑zones may need a 30‑ft setback with opaque screening when adjacent to or across from an R‑zone, and there are base street setbacks (e.g., M1 front 20 ft). Height increases may require approval (§ 8106‑1.2 & n.3) .

Does an ADU count toward lot coverage or regular setbacks?

If your ADU qualifies under § 8107‑1.7.4’s ministerial pathway, local lot coverage, setback, and parking standards do not apply to the ADU; a 4‑ft side/rear setback commonly applies. Non‑qualifying ADUs follow § 8107‑1.7.5 and other applicable standards (§ 8107‑1.7.4; § 8107‑1.7.5) .

I’m in Old Town Saticoy—do I use the usual Article 6 tables?

No. Old Town Saticoy parcels use Article 19’s building‑type standards (e.g., Industrial Building = 2 stories/45 ft) and site design requirements; West/South Industrial areas have 50% lot coverage caps (§ 8119‑1.4.9; § 8106‑1.4.1.1.8) .

Are there special buffers near oil wells?

Yes. Dwellings are discouraged within 800 ft of existing oil/gas well sites and prohibited within 500 ft unless a County‑approved disclosure is recorded; in any case, the setback cannot be less than 100 ft (§ 8106‑6.3) .

Can I get small relief from setbacks or lot coverage?

Possibly. Administrative variances can reduce required setbacks by up to 20%, add 1 ft to fence/wall height in setbacks, or increase lot coverage by up to 10%. Larger deviations require a variance (§ 8111‑1.2.2.4; § 8111‑1.2.2) .

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