Local zoning · Santa Paula

Santa Paula — Overlay Districts

Q: Do airport overlays restrict building heights or uses?

Yes. The airport overlays ( KO , KS , and KI ) limit uses and development intensity to protect airport safety; the KS overlay is divided into subzones ( KS‑IS and KS‑OS ) with mapped dimensions and restrictions, and overlay provisions prevail when more restrictive ( § 16.27.010 , § 16.27.020 ) .

Q: Where are the Historic Overlay standards—what triggers review?

The Code contains a Historic Landmark Overlay chapter header ( § 16.33.010 ) but the detailed standards and procedures were Not found in the retrieved materials; obtain the full Chapter 16.33 text and consult the Planning Department to confirm review triggers and preservation conditions .

Overlay Districts under the Santa Paula local zoning and planning code, with the controlling citations.

Ask a question free See coverage

Last reviewed: July 3, 2026

Overview

Santa Paula’s Development Code defines several overlay zones that sit on top of an underlying base zone and either add restrictions or allow tailored flexibility. Key overlays in the code include the Planned Development Overlay (PD), Specific Plan (SP) overlays, Airport overlays (KO, KS, KI), the Railroad (RR) overlay, Historic District (HD) overlay, and other administratively-identified overlays. The overlay concept and the rule that both the overlay and underlying zone apply (or that the more restrictive rule controls) are set out in the definitions and individual overlay chapters. See the definition of an overlay zone in § 16.05.160 and the Official Zoning Map rules in § 16.07.020 .

Note: This page covers only what the Santa Paula Development Code (Title 16/Title 17 equivalents inside the uploaded document) says about overlays. For related procedural or technical details (building code, inspections) see the California Building Standards Code. Design and site-configuration issues flagged below may interact with the city’s rules on parking, development standards, design review, historic preservation, ADUs, and nonconforming uses.

How overlays work in Santa Paula (core rules)

An overlay zone is “a zone established by ordinance that may be applied to properties only when combined with an underlying zone” and developments must conform to the requirements of both zones or to the more restrictive rule (§ 16.05.160) .
The Official Zoning Map identifies overlay districts graphically and is adopted by reference; boundary questions are resolved under § 16.07.020 and related rules for boundary determination (§ 16.07.030) .
Where a specific plan is adopted, the specific plan’s land-use designations and standards “supersede and control any contrary provision of this chapter” (§ 16.25.040) .

District-by-district breakdown

Planned Development Overlay — PD (Chapter 16.31)

Purpose: The PD overlay exists to allow alternative development standards and greater design flexibility for projects that benefit from unique design, preserve scenic or historic resources, or require special lot configurations (§ 16.31.010) .
Typical permitted uses: Uses allowed are the uses of the underlying zone; the PD is applied in combination with a base zone so permitted uses follow the base zone unless otherwise limited by conditions in the PD permit (§ 16.31.010) .
Key standards / modifications available: The Planning Commission or City Council can authorize deviations from base standards on things like lot size and dimensions, parking and circulation, building height, yard area, and landscaping/appearance, provided aggregate yard/ density rules or General Plan limits are respected (§ 16.31.040) .
Where it applies / process: A PD overlay requires a zone change and a concurrent planned development permit; no grading or building permits are issued until a planned development permit is approved, except limited additions to single‑family dwellings as described in § 16.31.030 (§ 16.31.030) . Approved planned development permits must be initiated within 12 months unless otherwise specified (§ 16.31.060) .
Practical guidance: Use the PD when you need tailored dimensional flexibility (smaller lots, mixed layouts) but be prepared for a zone-change and discretionary review; the PD process explicitly lets decision‑makers trade off lot size vs. common open space and other design elements (§ 16.31.020) .

Specific Plan Overlays — SP (Chapter 16.25; SP-1 through SP-7)

Purpose: Specific plan overlays identify areas with an adopted specific plan (e.g., SP-1 Adams Canyon, SP-7 Airpark); when a specific plan exists its standards control over contrary Code provisions (§ 16.25.020, § 16.25.040) .
Typical permitted uses: Determined by each adopted specific plan (not by the generic overlay text); the Code requires a specific plan’s land uses and standards to be implemented as adopted (§ 16.25.040) .
Where it applies: Identified by SP number on the zoning map; examples listed in the Code include SP-1 through SP-7 (§ 16.25.020) .
Practical guidance: If your parcel is in an SP overlay, consult the adopted specific plan document first — it governs. If the specific plan is silent on an issue, Title 16 standards apply (§ 16.25.040(B)) .

Airport overlays — KO, KS (with KS-IS and KS-OS), KI (Chapter 16.27)

Purpose: Protect airport operations and public safety around Santa Paula Airport. The code establishes an Airport Operational zone (KO) and overlay safety zones (KS subzones) plus an Airport-Influenced Area overlay (KI) tied to the Ventura County Airport Comprehensive Land Use Plan (VCACLUP) (§ 16.27.010) .
Typical permitted uses: The KO supports airport facilities; the safety overlays KS and KI limit uses and intensities to prevent creation of airport hazards and to reflect the VCACLUP policy (specific allowable uses and limits are tied to the zone definitions and VCACLUP mapping) (§ 16.27.010) .
Key dimensional/application rules: The KS overlay is split into KS-IS (Inner Safety Subzone) and KS-OS (Outer Safety Subzone) with mapped dimensions described in the chapter text; KI corresponds to the traffic pattern zone and requires less‑intense uses in the mapped area (§ 16.27.010) . The airport overlay provisions are explicitly overlays and, in conflicts with the underlying zone, the more restrictive provisions apply (§ 16.27.020) .
Where it applies: Mapped areas around Santa Paula Airport (refer to the VCACLUP mapping referenced by the Code) (§ 16.27.010) .
Practical guidance: Expect strict use and height restrictions within KS subzones; verify exact overlay boundaries on the Official Zoning Map and cross‑check VCACLUP maps before proposing development.

Railroad Overlay — RR (Chapter 16.29)

Purpose: Manage safety, screening, and appropriate uses adjacent to railroad rights‑of‑way, including supporting tourist‑oriented commercial and trail uses where underlying zones allow them (§ 16.29.020) .
Typical permitted uses: In addition to underlying-zone uses, the RR overlay expressly permits tourist‑oriented commercial uses where the base zone is commercial/industrial and allows hiking/biking trails; conditional uses include a train station subject to CUP review (§ 16.29.020) .
Key standards: Additional development standards require a minimum 5‑foot landscaped setback along property lines abutting the railroad and specific screening for outdoor storage so it’s not visible from rights‑of‑way (§ 16.29.030) .
Where it applies: Along properties abutting the railroad right‑of‑way as mapped; see the official map and the RR chapter for applicability (§ 16.29.030) .
Practical guidance: If your site touches the rail corridor you will need the landscape buffer and solid visual screening for outdoor storage; the Planning Director/Commission may require additional design/landscaping to meet the overlay’s intent.

Historic Landmark Overlay — HD (Chapter 16.33)

Purpose and intent: The Code establishes Historic Landmark Overlay Zoning Districts for landmark and historic area conservation (Chapter heading and § 16.33.010 appear in the Code) .
Typical permitted uses / standards / process: Not fully reproduced in the retrieved materials. The Code contains a dedicated chapter reference (§ 16.33.010) but specific use tables, setbacks, and review triggers for HD are Not found in retrieved materials. Verify with the Planning Department and the full Chapter 16.33 text for design review criteria, alteration standards, and any required Certificates of Appropriateness (Verify with the jurisdiction) .
Practical guidance: If an HD overlay appears on your parcel you must obtain and review Chapter 16.33 text and consult the Historic Preservation page and the Planning Department; design review and preservation conditions commonly apply though the specific rules are not available in the provided files.

Other overlays named on the zoning map (existence shown in code list)

The Code’s official list includes overlays/zone tags such as IP (Industrial Park Overlay) and others in the zoning abbreviation list (for example PD, SP, HD, KI, RR) — see the Code table of zone abbreviations and map rules (§ 16.07.020 and the abbreviation list) .
Specific purpose/standards for some of these overlays are contained in their own chapters (if present); where a chapter is not included in the retrieved materials, the specifics are Not found in retrieved materials — Verify with the jurisdiction.

Quick decision table — common overlays (high‑priority items)

Overlay	Most decision‑relevant items an applicant needs to know	Code Reference
PD (Planned Development)	Requires zone change + planned development permit; allows deviations to lot size, height, yards and parking but must meet General Plan density limits; 12‑month initiation limit on permits	§ 16.31.010, § 16.31.030, § 16.31.040, § 16.31.060
SP (Specific Plan overlays SP‑1…SP‑7)	Adopted specific plan controls where adopted; if silent, Title 16 fills gaps	§ 16.25.020, § 16.25.040
KS / KI / KO (Airport overlays)	Safety and use limits tied to VCACLUP; KS subzones have mapped dimensions; overlays are more restrictive where conflicts exist	§ 16.27.010, § 16.27.020
RR (Railroad overlay)	Adds 5‑ft landscaped setback along tracks; outdoor storage must be screened; tourist‑oriented commercial and trails allowed in addition to base uses	§ 16.29.020, § 16.29.030
HD (Historic overlay)	Purpose chapter present; detailed standards and processes not in retrieved materials — verify Chapter 16.33 text	§ 16.33.010 — Not found in retrieved materials

Checklist

Confirm your property’s overlay(s) on the Official Zoning Map and identify the underlying base zone (§ 16.07.020) .
For PD: prepare a zone change application and concurrent planned development permit with required exhibits (context photos, fully‑dimensioned plot plan) (§ 16.31.030) .
For SP: obtain and follow the adopted specific plan document for the SP number shown on the map (§ 16.25.040) .
For airport overlays (KS/KI): obtain the VCACLUP mapping and compare to the Code’s overlay mapping and limits (§ 16.27.010) .
For RR overlay: include a 5‑ft landscaped setback adjacent to the railroad and ensure outdoor storage is fully screened (§ 16.29.030) .
Determine whether proposed deviations will require Conditional Use Permit or Planning Commission/City Council approval per the overlay chapter (e.g., PD deviations per § 16.31.040) .
Verify whether the Historic (HD) overlay applies and obtain Chapter 16.33 text and any required preservation or design submittal requirements (Not found in retrieved materials — Verify with the jurisdiction) .
Confirm parking requirements with the city’s parking standards and how overlays affect required spaces.

Risks & Ambiguities

Issue	Why it matters	What to verify
Overlay boundary unclear	Overlays are map‑based; a small boundary difference can change applicable restrictions	Confirm boundary on the Official Zoning Map and request a written boundary determination if ambiguous (§ 16.07.020, § 16.07.030)
PD permit scope vs. underlying zone	PD can modify dimensional standards but density and General Plan limits still bind	Confirm allowable deviations and required findings under § 16.31.040 and that overall density matches General Plan limits (§ 16.31.020)
Historic overlay standards missing from retrieved materials	The chapter header exists but implementation details may alter review, triggers, or required permits	Obtain full Chapter 16.33 text from the Planning Department; the retrieved files did not include standards (Not found in retrieved materials)
Airport overlay mapping and VCACLUP reliance	Airport overlays rely on an external VCACLUP map; those maps determine KS/KI extents and permitted intensities	Cross‑check the Code’s overlay text with VCACLUP maps and the Official Zoning Map; see § 16.27.010 and § 16.27.020
Conflicts between overlays and specific plans	Specific plans supersede inconsistent Code sections — this can change setbacks, uses, and processes	If a specific plan applies, rely on the adopted specific plan per § 16.25.040

Plain‑English summary

Overlays are extra layers of rules placed on top of a parcel’s normal zone in Santa Paula — for example the PD overlay lets the city approve customized lot sizes and building layouts if you go through a discretionary PD process (§ 16.31.010–.040) . Some overlays are protective (airport safety overlays KS/KI restrict certain uses; the RR overlay requires a 5‑foot landscape buffer along tracks) so always check the Official Zoning Map and the exact overlay chapter text before designing or applying for permits (§ 16.27.010, § 16.29.030, § 16.07.020) .

Source References

§ 16.05.160 (Overlay zone definition)
§ 16.07.020 (Official Zoning Map; map is adopted by reference)
§ 16.25.020, § 16.25.040 (Specific Plan overlays, SP‑1…SP‑7; specific plans control)
§ 16.27.010, § 16.27.020 (Airport zones: KO, KS, KI; applicability and safety subzones)
§ 16.29.020, § 16.29.030 (Railroad overlay permitted uses and additional development standards, including 5‑ft landscape setback)
§ 16.31.010, § 16.31.020, § 16.31.030, § 16.31.040, § 16.31.060 (Planned Development Overlay — purpose, circumstances for use, application & modification rules, time limits)
§ 16.33.010 (Historic Landmark Overlay chapter header) — details Not found in retrieved materials; obtain full Chapter 16.33 text from the Planning Department to confirm preservation standards and any design review triggers

Sources

Retrieved passages

Santa Paula Zoning Code (§ 16.31.010) High relevance
Santa Paula Zoning Code (§ 16.31.040) High relevance
Santa Paula Zoning Code (§ 16.29.020) High relevance
Santa Paula Zoning Code (§ 16.222.040) Medium relevance
Santa Paula Zoning Code (§ 16.07.020) Medium relevance
Santa Paula Zoning Code (Article XI) Medium relevance
Santa Paula Zoning Code (§ 16.05.160) Medium relevance
Santa Paula Zoning Code (§ 160.120) Medium relevance

Cited sections

Official Santa Paula code library

Frequently asked questions

What is an overlay zone in Santa Paula?

An overlay zone is “a zone established by ordinance that may be applied to properties only when combined with an underlying zone,” and developments must conform to both the overlay and the base zone (or the more restrictive rule) as defined in § 16.05.160 .

When do I need a Planned Development (PD) overlay?

You need a PD overlay when you want to use the PD mechanism to modify dimensional standards (lot sizes, yards, heights, parking layouts) or pursue a design that the base zone won’t allow; a PD requires a zone change and a planned development permit per § 16.31.030 and the PD purpose is explained in § 16.31.010 .

What are the railroad overlay (RR) setbacks and screening requirements?

Along any property line abutting a railroad right‑of‑way you must provide a minimum 5‑foot‑wide landscaped setback and keep outdoor storage entirely shielded from view from public rights‑of‑way by fences, walls, or landscaping as required by § 16.29.030 .

Do airport overlays restrict building heights or uses?

Yes. The airport overlays (KO, KS, and KI) limit uses and development intensity to protect airport safety; the KS overlay is divided into subzones (KS‑IS and KS‑OS) with mapped dimensions and restrictions, and overlay provisions prevail when more restrictive (§ 16.27.010, § 16.27.020) .

If my lot is in both a Specific Plan (SP) and an overlay, which controls?

An adopted specific plan’s land use designations and standards supersede contrary provisions of Title 16; if the specific plan is silent on an issue, Title 16 controls — see § 16.25.040 .

How long do I have to start a project after a PD permit is approved?

After approval of a planned development permit, work authorized by the permit must be initiated within 12 months unless another period is specified by the Planning Commission; see § 16.31.060 .

Where are the Historic Overlay standards—what triggers review?

The Code contains a Historic Landmark Overlay chapter header (§ 16.33.010) but the detailed standards and procedures were Not found in the retrieved materials; obtain the full Chapter 16.33 text and consult the Planning Department to confirm review triggers and preservation conditions .

Does the PD overlay change parking requirements?

The PD process can permit modifications to parking, and the Commission/Council may require or reduce off‑street parking based on project circulation and neighborhood impact as part of PD approval (§ 16.31.040); also confirm city parking standards via the parking page (§ 16.31.040) .

Can an overlay allow smaller lots than the underlying zone?

Yes—under a PD overlay the Commission/Council may allow reduced lot sizes/dimensions provided overall project density conforms to General Plan limits; see § 16.31.020 and § 16.31.040 .

Who decides ambiguous overlay boundaries or which rule controls?

The Planning Commission can make written determinations when zone or overlay boundaries are uncertain, and overlay/underlying conflicts are resolved by applying the more restrictive provision unless a specific plan or other law supersedes (§ 16.07.030, § 16.25.040) .

Ask about any Santa Paula property

Get a cited, plain-English answer on Santa Paula zoning, setbacks, FAR, ADUs and permits — for any address.

Start Free Trial