Apple Valley — Overlay Districts

Last reviewed: July 3, 2026

Overview

Apple Valley’s Development Code treats overlay districts as additive policy layers that sit on top of the base zoning map and modify or add standards for specific hazards, airport compatibility, or previously platted neighborhoods. Verify whether a parcel carries an overlay on the Town’s official Zoning Districts Map and follow the overlay rules in addition to the underlying zone (the overlay symbol appears in parentheses after the base zone) § 9.05.040 and § 9.05.050 . For how overlays fit into Apple Valley’s overall rules on uses and development standards, see the town’s zoning & planning overview and Zoning pages.

The principal overlay districts in the Code are the Airport Overlay (A‑1, A‑2), Flood Hazard (FH, including FH‑L Apple Valley Dry Lake), Seismic Hazard (SH), and the Ranchos Residential Overlay (RRO); these are listed in Table 9.05.030‑A and applied on the official map § 9.05.030 . Below is a district‑by‑district breakdown, with the practical rules you’ll actually need to check.

Airport Overlay Districts — A‑1 and A‑2

Purpose: Protect people and property near Apple Valley Airport by limiting noise exposure, accident risk, and land uses that interfere with aircraft operations § 9.65.010 .

Where it applies: Properties mapped as A‑1 or A‑2 on the official Zoning Districts Map; the overlay is applied in addition to the underlying zoning and the stricter standard prevails § 9.05.050 .

Typical permitted / prohibited uses:

• Many high‑density or people‑congregating uses are limited or prohibited in A‑1 and A‑2 (e.g., no hotels, schools, hospitals in many safety zones) and certain hazardous uses (explosives, operations that attract birds, smoke, lights that impair pilots) are explicitly prohibited § 9.65.050 and § 9.65.060 .
• Nonresidential new development or significant expansions typically require an airport compatibility review; minor repairs and small accessory structures are exempted from that review but must still meet other Chapter rules § 9.65.030 .

Key dimensional / operational standards:

• Population and coverage limits inside safety zones are set in the Land Use Compatibility Guidelines table (Table 9.65.060‑A) — for example, the Airport Master Plan Safety Area recommends essentially no residential density and almost no structural coverage; A‑1 and A‑2 carry different density and coverage caps and use prohibitions § 9.65.060 .
• Noise mitigation: a minimum interior Noise Level Reduction (NLR) of 30 decibels for certain occupied spaces is required § 9.65.030.B.6 .

Practical guidance:

• Expect an airport compatibility review for most new commercial/industrial projects in the overlay; the Planning Manager or Airport Manager may review and comment § 9.65.030.B . See the Town’s Design Review guidance early in your process. If your project includes new parking or changes in circulation, coordinate with the Town’s Parking standards as well.

Code references: § 9.65.010, § 9.65.030, § 9.65.040, § 9.65.060 .

Flood Hazard Overlay (FH) and Apple Valley Dry Lake (FH‑L)

Purpose: Regulate development in FEMA‑mapped flood hazard areas and specific local dry lake areas to protect life and property § 9.62.060 .

Where it applies: All areas mapped as Flood Hazard (FH) on the Town’s Zoning Map and FEMA Flood Insurance Rate Maps; the Apple Valley Dry Lake special rules apply to parcels at or below elevation 2,909 feet (FH‑L) § 9.62.060 and § 9.62.100 .

Typical permitted uses / exceptions:

• Underlying uses are allowed only if they comply with flood provisions; legally created lots prior to August 14, 1990 may still develop but must meet stricter development criteria in FH‑L § 9.62.100.C .
• Variances for development below required elevations may be available but carry specific findings and recorded notices § 9.62.090–.100 .

Key dimensional / site standards (FH‑L highlights):

• Finished floor for habitable areas must be at least 2 feet above the base flood elevation, the base flood elevation is identified as 2,909 feet in the Dry Lake area for Code purposes § 9.62.100.A .
• Fill materials to raise pads must come from the Dry Lake area at or below 2,909 ft or an equivalent volume must be removed so there is no net displacement § 9.62.100.C.2 .
• No new lot under 20 acres may be created within the Dry Lake Overlay unless it contains a buildable area ≥ 18,000 sq ft above elevation 2,909 ft and has paved access entirely above 2,909 ft § 9.62.100.D .
• Applicants must record a notice acknowledging potential periodic inundation of access streets prior to permit issuance § 9.62.100.C.6 .

Practical guidance:

• For parcels near the Dry Lake elevations, get a site elevation survey early; confirm whether the lot is within FH‑L and whether your pad meets the +2 ft requirement. If you will import fill, plan for the materials requirement and grading controls; see the Code for erosion and slope limits § 9.62.100.C.3–.5 .

Code references: § 9.62.060, § 9.62.100 .

Seismic Hazard Overlay — SH

Purpose: Protect public safety by limiting occupancy/encroachment in proximity to active faults and requiring geologic analysis for structures in special study zones § 9.64.010 and § 9.64.030 .

Where it applies: Properties identified under the Alquist‑Priolo Special Studies Zone Act, mapped by the Town, or otherwise deemed to be in close proximity to faults § 9.64.030 .

Typical requirements and exemptions:

• A geologic investigation is required for any development involving structures for human occupancy in special study zones; limited exemptions exist for single‑family wood frame residences under certain conditions § 9.64.040–.050 .
• Critical facilities have additional requirements (see § 9.64.060 for critical facilities) — Verify with the Town for parcel‑specific requirements § 9.64.060 .

Practical guidance:

• If your property lies in SH, expect to commission a certified geologist/engineering geologist report before building permits are approved. Exemptions are narrow — check the criteria in § 9.64.050 and get a pre‑application meeting with the Town.

Code references: § 9.64.010–.060 .

Ranchos Residential Overlay — RRO

Purpose: Preserve previously recorded residential tract setback patterns by applying tract‑specific front, street‑side, and interior side setbacks that override the generic site standards § 9.63.010 .

Where it applies: Specific platted Ranchos tract subdivisions shown with parentheses on the Zoning Map and listed in the Ranchos matrix § 9.63.020 .

Typical permitted uses and standards:

• Uses follow the underlying residential zone but setback dimensions are taken from the Ranchos Residential Overlay Matrix (Table 9.63.020‑A). Where a ranchos setback is not designated for a tract, standard setbacks in Section 9.28.040 apply § 9.63.020 .
• Corner or odd‑shaped lots with buildable area under 45% may have reduced setbacks to achieve 45% buildable area (see exception language) § 9.63.030 .

Practical guidance:

• If your lot is in a Ranchos area, do not rely on Table 9.28.040‑A setbacks; pull Table 9.63.020‑A and confirm the tract name and the matrix entry. For deviations from recorded final map setback lines, use the Variances and Exceptions or Deviation Permit process as required by the Code § 9.63.020 and § 9.05.050 . Also consult the Town’s Development Standards page.

Quick Reference Table — decision‑relevant standards

Checklist

• Confirm overlays mapped on the parcel via the official Zoning Districts Map § 9.05.040 .
• Apply both the overlay standards and the underlying zone’s standards; the more restrictive rule controls § 9.05.050 .
• If within A‑1/A‑2, plan for an airport compatibility review for most nonresidential projects and document noise attenuation (NLR 30 dB) § 9.65.030.B.6 . Reference Town Design Review early.
• If within FH/FH‑L, get an elevation survey and design habitable floors ≥ 2 ft above the base flood elevation (Dry Lake base = 2,909 ft); if importing fill, confirm source/mitigation § 9.62.100.A–C .
• If within SH, obtain and submit a geologic investigation prepared by a qualified geologist when required § 9.64.040 .
• If within RRO, pull Table 9.63.020‑A to confirm tract‑specific setbacks and use the Development Standards table to reconcile any differences § 9.63.020 .
• For any proposed deviation from recorded setback lines, pursue a Variance / Deviation Permit with the Town (Variances and Exceptions) § 9.05.050 .
• Confirm conformity with applicable local requirements for landscaping/screening and trash enclosures referenced to site standards as applicable (Landscaping and Screening) § 9.28 / related chapters .
• Ensure building plans comply with state rules (Title 24) at permit submittal — verify separately with the Building Division and the California Building Standards Code.

Risks & Ambiguities

Plain‑English Summary

Overlay districts in Apple Valley are extra zoning rules that sit on top of your base zone: common overlays are Airport (A‑1/A‑2), Flood Hazard (FH / FH‑L Dry Lake), Seismic Hazard (SH), and Ranchos Residential (RRO) — each adds specific use limits or construction requirements (for example, FH‑L requires habitable floors 2 ft above the base flood elevation and has an elevation cutoff of 2,909 ft) § 9.62.100 . Always check the official Zoning Map and follow the stricter of the overlay vs. underlying rules, and plan for the specialized reviews they impose (airport compatibility, geologic review, flood compliance) § 9.05.050, § 9.65.030, § 9.64.040 .

Source References

• Town of Apple Valley Development Code — Zoning map and district listing: § 9.05.030, official Zoning Districts Map rules § 9.05.040, overlay rules § 9.05.050 .
• Chapter 9.65 — Airport Overlay Districts (purpose, administration, A‑1/A‑2 zones, Land Use Compatibility Table 9.65.060‑A): § 9.65.010, § 9.65.030, § 9.65.040, § 9.65.060 .
• Chapter 9.62 — Flood Hazard Overlay and Apple Valley Dry Lake (FH, FH‑L): general provisions § 9.62.060, Dry Lake provisions § 9.62.100 .
• Chapter 9.64 — Seismic Hazard Overlay (purpose, geologic investigation, exemptions): § 9.64.010–.060 .
• Chapter 9.63 — Ranchos Residential Overlay (purpose, applicability, matrix and exceptions): § 9.63.010–.030 and Table 9.63.020‑A .
• Town development standards and site standards referenced in overlay chapters: Chapter 9.28 (site development standards), Table 9.28.040‑A § 9.28.040 .

Retrieved passages

• Apple Valley Zoning Code (Chapter 9.07) High relevance show source text
• Apple Valley Zoning Code (Chapter 9.07) High relevance show source text
• Apple Valley Zoning Code (Section 9.28.020) Medium relevance show source text
• Apple Valley Zoning Code (Section 9.31.050) Medium relevance show source text
• Apple Valley Zoning Code Medium relevance show source text
• Apple Valley Zoning Code (Chapter 9.28.) Medium relevance show source text
• Apple Valley Zoning Code (Section 9.29.080) Medium relevance show source text
• Apple Valley Zoning Code (Chapter 9.19) Medium relevance show source text

Cited sections

• Town of Apple Valley Development Code — Zoning map and district listing: **§ 9.05.030**, official Zoning Districts Map rules **§ 9.05.040**, overlay rules **§ 9.05.050** . (§ 9.05.030)
• Chapter 9.65 — Airport Overlay Districts (purpose, administration, A‑1/A‑2 zones, Land Use Compatibility Table 9.65.060‑A): **§ 9.65.010**, **§ 9.65.030**, **§ 9.65.040**, **§ 9.65.060** . (Chapter 9.65)
• Chapter 9.62 — Flood Hazard Overlay and Apple Valley Dry Lake (FH, FH‑L): general provisions **§ 9.62.060**, Dry Lake provisions **§ 9.62.100** . (Chapter 9.62)
• Chapter 9.64 — Seismic Hazard Overlay (purpose, geologic investigation, exemptions): **§ 9.64.010–.060** . (Chapter 9.64)
• Chapter 9.63 — Ranchos Residential Overlay (purpose, applicability, matrix and exceptions): **§ 9.63.010–.030** and Table 9.63.020‑A . (Chapter 9.63)
• Town development standards and site standards referenced in overlay chapters: Chapter 9.28 (site development standards), Table 9.28.040‑A **§ 9.28.040** . (Chapter 9.28)
• AppleValley_ZoningCode.md

• Official Apple Valley code library