Local zoning · El Dorado County

El Dorado County — Overlay Districts

Overlay Districts under the El Dorado County local zoning and planning code, with the controlling citations.

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Last reviewed: July 6, 2026

Overview

In unincorporated El Dorado County, overlays are called “Combining Zones.” They append a suffix to a parcel’s base zone and add extra rules that work alongside normal zoning and development standards. The County’s Zoning Ordinance is Title 130; Combining Zones are established in Article 2, Chapter 130.27 and applied as a suffix to the base zone on the official zoning map (§ 130.27.010; suffix mapping) . Within the Lake Tahoe Basin, Tahoe Regional Planning Agency (TRPA) rules also apply in addition to County zoning (§ 130.10.020.C) .

Key rule of thumb: A Combining Zone “stacks” on top of the base zone and either adds requirements, modifies certain standards, or limits sensitive uses. Unless a Combining Zone says otherwise, the base-zone uses and standards still apply (§ 130.27.010.B.2) .

How Combining Zones are shown and applied

  • Shown as a suffix to the base zone symbol on the zoning map (e.g., R1-T) (§ 130.27.010.B.1) .
  • Adopted through a zone change; when two rules conflict, the more restrictive rule controls (§ 130.27.010.B; § 130.63, referenced) .
  • Title 130 lists the County’s Combining Zones, including Airport Safety (-AA), Avalanche (-AV), Dam Failure Inundation (-DFI), Design Review—Community (-DC), Design Review—Historic (-DH), Design Review—Scenic Corridor (-DS), Manufactured/Mobile Home Park (-MP), Mineral Resource (-MR), Noise Contour (-NC), Planned Development (-PD), and Tahoe Basin (-T) (§ 130.12.010.D) .

Countywide Combining Zones at a glance

Combining Zone What it’s for What it adds or changes Selected standards / effects Code Reference
-DC (Design Review—Community) Community/scenic corridor design oversight Requires design review for multi-unit residential, commercial, mixed-use, and industrial; exemptions listed DR required; exemptions include detached single-unit residences (outside Meyers), small additions, signage text changes; DR can be satisfied by another discretionary permit (§ 130.27.050.C–D) § 130.27.050
-DH (Design Review—Historic) Protect historic districts/resources DR applies to multi-unit/commercial/industrial; single-unit residences require an Administrative Permit; Historic Design Guidelines apply Project must be consistent with adopted Historic Design Guidelines; if no guideline yet, County’s 1982/2018 Historic Design Guides apply (§ 130.27.060.C–D) § 130.27.060
-DS (Design Review—Scenic Corridor) Scenic corridors Reserved (no standards adopted) Not found in retrieved materials beyond “Reserved” § 130.27.070
-DFI (Dam Failure Inundation) Public-safety limits in mapped dam-inundation areas Prohibits “critical/high-occupancy” uses in -DFI areas Prohibited: schools, places of assembly, child day care, mobile home parks, community care facilities, hospitals (§ 130.27.040.C) § 130.27.040
-AV (Avalanche Hazard) Avalanche-prone areas Reserved (no standards adopted) Not found in retrieved materials beyond “Reserved” § 130.27.030
-ANS (Airport Noise & Safety Contour) Airport safety, height limits, noise compatibility Requires ALUCP consistency; ALUC review within Airport Influence Area ALUCP governs compatibility, height, possible avigation easement; County forwards projects to ALUC; exemptions for certain temporary uses (§ 130.27.100.A–I) § 130.27.100
-MP (Mobile/Manufactured Home Park) Mobilehome park development standards Applies where “Mobile/Manufactured Home Park” use is allowed; must meet HCD/state standards plus County standards New parks must follow County’s adopted Mobile Home Park Design Standards; compliance with H&S Code ch. 18200 et seq. and Title 25 regulations (§ 130.27.090) § 130.27.090
-MR (Mineral Resource) Mineral resource protection and mining regulation Adds exploration/mining rules; minimum lot-size constraints; reclamation and SMARA integration Subdivision under 20 acres generally prohibited unless findings; exploration permit levels by zone; special setbacks cross-referenced (§§ 130.29.010, .030, .060, .070) Ch. 130.29
-PD (Planned Development) Master-planned flexibility Adds Development Plan Permit; may modify setbacks/lot sizes/height/FAR; requires common open space Typical residential PD requires 30% common open space with targeted exemptions; allowed uses follow base zone; density bonuses possible (§§ 130.28.030–.050) Ch. 130.28; § 130.52.040
-T (Tahoe Basin) TRPA coordination Supersedes base standards where table specifies; adds TRPA permitting/standards Residential max height 25 ft at natural grade; tandem parking allowed; lot coverage via TRPA Bailey/IPES; specific setbacks listed (§ 130.27.120.D & Table 130.27.120.A) § 130.27.120

Note: The zone list also shows -AA (Airport Safety) and -NC (Noise Contour) in § 130.12.010.D, but airport compatibility is implemented through the -ANS chapter in the retrieved materials. Detailed -AA/-NC chapters were not found; verify with the jurisdiction (§ 130.12.010.D; § 130.27.100) .

District-by-District details

Design Review—Community (-DC)

  • Purpose and where it applies: Applied in Board-established community design review areas and where development is adjacent to or visible from designated State Scenic Highways (§ 130.27.050.B) .
  • Typical permitted uses: Same as base zone, but projects in multi-unit residential, commercial, mixed-use, and industrial categories require a Design Review Permit; some communities (e.g., Shingle Springs) with adopted standards are exempt from separate DR permitting (§ 130.27.050.C–D) .
  • Key standards/process: Design Review is limited to compliance with adopted standards; if another discretionary permit is required, that permit can satisfy DR (§ 130.27.050.C.2, F) .
  • Practical tip: Expect design committees and adopted guidelines to govern architecture, landscaping, and site design.

Design Review—Historic (-DH)

  • Purpose and where it applies: Identifies historic districts/sites to preserve visual integrity (§ 130.27.060.A–B) .
  • Typical permitted uses: Base-zone uses remain; development in multi-unit/commercial/industrial is subject to Design Review; single-unit residential requires an Administrative Permit (consistency check) before building permit issuance (§ 130.27.060.C) .
  • Key standards: Projects must meet adopted Historic Design Guidelines; if none are adopted for the area, the County’s Historic Design Guides (1982; reformatted 2018) apply (§ 130.27.060.D) . See also Historic Preservation.

Design Review—Scenic Corridor (-DS)

  • Status: Reserved; no implementing standards in the retrieved ordinance (§ 130.27.070) .
  • What this means: Mapping may exist conceptually, but no additional rules beyond base zoning are confirmed. Verify with the jurisdiction.

Dam Failure Inundation (-DFI)

  • Purpose and where it applies: Covers lands mapped by State/Federal agencies as susceptible to dam-failure flooding (§ 130.27.040.A–B) .
  • Typical permitted uses: Most base-zone uses continue, but several “critical/high-occupancy” uses are prohibited.
  • Key standards: Prohibits new schools, places of assembly, child day care, mobile home parks, community care facilities, and hospitals in -DFI (§ 130.27.040.C) .

Avalanche Hazard (-AV)

  • Status: Reserved; no implementing standards in the retrieved ordinance (§ 130.27.030) .

Airport Noise and Safety Contour (-ANS)

  • Purpose and where it applies: Implements the Airport Land Use Compatibility Plan (ALUCP) for the Cameron Airpark, Georgetown, and Placerville airport influence areas (§ 130.27.100.A–B) .
  • Typical permitted uses: Base-zone uses allowed if consistent with ALUCP noise/safety/airspace criteria; single-family homes on lawful lots may still be permitted subject to ALUCP height and attenuation (§ 130.27.100.D) .
  • Key standards/process: ALUC review required for discretionary permits; projects may need avigation easements; certain temporary uses are exempt (§ 130.27.100.E, G–I) .

Mobile/Manufactured Home Parks (-MP)

  • Purpose and where it applies: Provides consistent standards for new or revised mobilehome parks (§ 130.27.090.A–B) .
  • Typical permitted uses: The “Mobile/Manufactured Home Park” use is typically allowed by Conditional Use Permit in residential zones; consult the residential use matrix (§ 130.24.020) .
  • Key standards: Must comply with state HCD regulations (H&S Code ch. 18200 et seq.; 25 CCR) and County’s adopted Mobile Home Park Design Standards (§ 130.27.090.C–D) .

Mineral Resource (-MR)

  • Purpose and where it applies: Protects important mineral resources (SMARA) and regulates exploration/mining/reclamation; applied to MRZ-2 areas (§ 130.29.010–.030) .
  • Typical permitted uses: Base-zone uses, plus mineral exploration/mining per a permit matrix tied to zone and disturbance level (§ 130.29.070 & Table 130.29.070.1) .
  • Key standards: Subdividing to <20 acres in/adjacent to -MR is prohibited unless findings show resource won’t be threatened; setbacks for mineral protection are cross-referenced in § 130.30.030.F (§ 130.29.060) .

Planned Development (-PD)

  • Purpose and where it applies: Enables flexible, master-planned projects and can vary setbacks, lot size, FAR, and height to achieve better design outcomes (§ 130.28.010; § 130.52.040.D.1) .
  • Typical permitted uses: Follow the base zone (plus common-area and similar PD-supporting uses); density is per base zone unless bonuses apply (§ 130.28.030.B–C) .
  • Key standards/process: Requires a Development Plan Permit; residential PDs typically must set aside 30% of the site as common open space with targeted exemptions for small sites, RM-zoned projects, etc. (§ 130.28.040–.050) . PD may establish project-specific design guidelines and sign programs; permits process concurrently with maps/other approvals (§ 130.28.040; § 130.52.040.D.2) .

Tahoe Basin (-T)

  • Purpose and where it applies: Coordinates County zoning with TRPA regulations for all lands in the Lake Tahoe drainage basin (excluding [Meyers Area Plan] subareas) (§ 130.27.120.A–B) .
  • Typical permitted uses: Base-zone uses remain; TRPA permitting/standards also apply (§ 130.27.120.C) .
  • Key standards: Table 130.27.120.A supersedes base standards in several zones—e.g., residential max height 25 ft (at natural grade), tandem parking may be allowed, and lot coverage governed by TRPA’s Bailey/IPES systems (§ 130.27.120.D & Table 130.27.120.A) .

Checklist

  • Confirm your parcel’s base zone and any suffixes (e.g., -PD, -T) on the official zoning map (§ 130.27.010.B.1) .
  • Identify if you are inside the Tahoe Basin; if yes, plan for TRPA compliance in addition to County rules (§ 130.27.120.C) .
  • If within -DC or -DH, prepare a design review submittal (or verify exemptions) (§ 130.27.050–.060) .
  • If mapped -DFI, verify your proposed use is not among the prohibited “critical/high-occupancy” categories (§ 130.27.040.C) .
  • If within -ANS, confirm ALUCP consistency and ALUC review steps (§ 130.27.100.B, G–I) .
  • For -PD projects, assemble a Development Plan Permit package, open-space calculations, and any requested standard variations (§ 130.28.040–.050; § 130.52.040) .
  • For -MR, determine disturbance level and permit type; avoid <20-acre subdivisions unless findings can be made (§ 130.29.060–.070) .
  • If developing a mobilehome park (-MP), align the plan with the County’s Mobile Home Park Design Standards and HCD rules (§ 130.27.090.C–D) .
  • Review related County standards for parking, signage, and variances/exceptions as they can intersect with overlays.

Risks & Ambiguities

Issue Why it matters What to verify
-AA/-NC listed vs. -ANS implemented The zone list shows -AA and -NC, but the active airport overlay chapter is -ANS; misreading could miss ALUCP requirements Confirm your parcel’s airport overlay label on the map and follow § 130.27.100 procedures (ALUC review, easements) (§ 130.12.010.D; § 130.27.100)
-DS and -AV marked “Reserved” A mapped “reserved” overlay may imply future regulation Ask County staff if any interim policy applies; currently, no standards were found (§ 130.27.030; § 130.27.070)
Tahoe Basin vs. base zone Tahoe standards can supersede base standards and add TRPA layers Use Table 130.27.120.A and TRPA codes; when in doubt, the most restrictive applies (§ 130.27.120.D)
PD flexibility vs. base standards PDs can vary setbacks, height, etc. Ensure the Development Plan Permit findings cover any variation; track required open space and any density bonuses (§ 130.28.050; § 130.52.040.D.1)
Mineral resource setbacks/subdivision -MR affects subdivision and exploration permits Check special mineral-protection setbacks (cross-ref) and whether <20-acre splits can be justified (§ 130.29.060; § 130.30.030.F)
Dam Inundation prohibitions Siting a prohibited “critical use” in -DFI can halt a project Cross-check use category early; alternatives may be needed (§ 130.27.040.C)

Plain-English Summary

In unincorporated El Dorado County, overlays (Combining Zones) add targeted rules on top of your base zoning—like extra design review near scenic corridors or historic areas, special safety limits around airports and dams, flexible master-planning in PDs, TRPA rules in the Tahoe Basin, and mineral-resource protections. Start by checking if your zoning has a suffix (e.g., -PD, -T) and then follow the overlay’s added steps; if two rules conflict, the stricter one wins (§ 130.27.010.B) .

Source References

  • Title 130 Zoning; Article 1 applicability and Tahoe Basin applicability (§ 130.10.020)
  • Chapter 130.12; Official zones and Combining Zones list (§ 130.12.010.D; § 130.12.020)
  • Combining Zones established; mapping/stacking rules (§ 130.27.010)
  • -DC Community Design Review (§ 130.27.050)
  • -DH Historic Design Review (§ 130.27.060)
  • -DS Reserved (§ 130.27.070)
  • -DFI Dam Failure Inundation (§ 130.27.040)
  • -ANS Airport Noise and Safety Contour (§ 130.27.100)
  • -MP Mobile/Manufactured Home Parks (§ 130.27.090) and residential use matrix (§ 130.24.020)
  • -MR Mineral Resource (Ch. 130.29), including minimum lot size and exploration table (§§ 130.29.010, .030, .060, .070)
  • -PD Planned Development (Ch. 130.28) and Development Plan Permit (§ 130.52.040)
  • -T Tahoe Basin (TRPA coordination; § 130.27.120; Table 130.27.120.A)

Sources

Retrieved passages

  • CFC § 130.41.100 (Section shall) High relevance
  • El Dorado County Zoning Code (Chapter shall) High relevance
  • El Dorado County Zoning Code (Section is) High relevance
  • El Dorado County Zoning Code (CHAPTER 130.24.) High relevance
  • El Dorado County Zoning Code (Section 130.40.180) High relevance
  • El Dorado County Zoning Code (Section 130.40.400) Medium relevance
  • El Dorado County Zoning Code Medium relevance
  • El Dorado County Zoning Code (Section 130.36.050) Medium relevance
  • El Dorado County Zoning Code (CHAPTER 130.28.) High relevance
  • El Dorado County Zoning Code (Article 3) High relevance
  • El Dorado County Zoning Code (Section 4.6.1) Medium relevance
  • El Dorado County Zoning Code (Chapter 130.28) Medium relevance
  • El Dorado County Zoning Code (Title 25) Medium relevance
  • El Dorado County Zoning Code (Section 130.52.040) Medium relevance
  • El Dorado County Zoning Code (Section 130.40.180) Medium relevance
  • El Dorado County Zoning Code (Chapter shall) Medium relevance
  • El Dorado County Zoning Code (Chapter shall) Medium relevance
  • El Dorado County Zoning Code (Chapter 130.30) Medium relevance
  • El Dorado County Zoning Code (Chapter 130.31) Medium relevance
  • El Dorado County Zoning Code (Section establishes) Medium relevance
  • El Dorado County Zoning Code (Chapter shall) Medium relevance
  • CBC § 66427.1 (Section is) Medium relevance
  • El Dorado County Zoning Code (Section 130.12.010) Medium relevance
  • El Dorado County Zoning Code (chapter establishes) Medium relevance

Cited sections

Frequently asked questions

How do I know if my parcel in unincorporated El Dorado County has an overlay?

Check the zoning map for a suffix after your base zone (e.g., R1-DC, RE-PD, CC-T). Combining Zones are applied as suffixes and are adopted via a zone change (§ 130.27.010.B.1) .

Do I need design review for my commercial project near a State Scenic Highway?

Likely yes, if you are within a -DC area. Multi-unit residential, commercial, mixed-use, and industrial projects in -DC require a Design Review Permit unless an exemption applies (§ 130.27.050.C–D) .

What changes if my home project is in a historic district (-DH)?

Single-unit residential projects must obtain an Administrative Permit confirming consistency with the Historic Design Guidelines before building permits; other zones go through Design Review. If local guidelines are not adopted, County Historic Design Guides apply (§ 130.27.060.C–D) .

Are there special setbacks or heights in the Tahoe Basin (-T)?

Yes. Residential height is capped at 25 feet at natural grade, tandem parking may be allowed, and lot coverage is controlled by TRPA systems. Table 130.27.120.A supersedes base-zone standards where noted (§ 130.27.120.D) .

Can I build a school or hospital on land mapped as Dam Failure Inundation (-DFI)?

No. New schools, places of assembly, child day care, mobile home parks, community care facilities, and hospitals are prohibited in -DFI areas (§ 130.27.040.C) .

What is a Planned Development (-PD) and why would I use it?

-PD allows a master plan with flexible standards (e.g., setbacks, FAR, height) via a Development Plan Permit. Residential PDs must typically provide 30% common open space (with specific exemptions) (§§ 130.28.040–.050; § 130.52.040) .

Do airport overlays affect my project near Cameron Park or Placerville Airport?

Yes. If within the Airport Influence Area, your project must be consistent with the ALUCP; the County forwards discretionary permits to the ALUC and may require avigation easements (§ 130.27.100.B, G–I) .

Can I subdivide land within a Mineral Resource (-MR) overlay?

Subdividing to less than 20 acres is generally prohibited unless the County makes specific findings that the split won’t threaten mineral extraction potential (§ 130.29.060) .

Are there separate Airport Safety (-AA) or Noise Contour (-NC) chapters?

The zone list shows -AA and -NC, but the retrieved implementing chapter is Airport Noise and Safety Contour (-ANS). Follow § 130.27.100; verify any -AA/-NC labeling with the County (§ 130.12.010.D; § 130.27.100) .

Do Combining Zones change allowed uses?

Generally, base-zone uses remain unless the Combining Zone adds limits (e.g., -DFI prohibitions) or extra process (e.g., -DC/-DH design review). If two rules conflict, the more restrictive applies (§ 130.27.010.B.2) .

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