Alpine County — Historic Preservation

Last reviewed: July 6, 2026

Overview

Historic preservation in unincorporated Alpine County is governed by the Zoning Ordinance’s historic overlay for the Markleeville townsite and a countywide rule to protect discovered cultural resources. The ordinance applies only in the county’s unincorporated areas and not in any incorporated cities. Core rules live in the combined overlay district for the Markleeville Historic District and in a general standard for historic/prehistoric finds during development (§ 18.04.040 ; § 18.56.010–18.56.120 ; § 18.68.060 ).

In the Markleeville Historic District, most exterior work, new construction, site work, signs, and certain color changes require design review and must be compatible with the district’s 1850–1940 “historic period of architecture” (§ 18.56.020, § 18.56.060, § 18.56.090 ).

Link this topic with your projects on Alpine County Zoning, Overlay Districts, Design Review, Development Standards, Signage, and, where relevant, Variances and Exceptions and Alpine County Zoning.

Historic Preservation Framework in Unincorporated Areas

• Countywide baseline rule. Any development project that encounters “historic or prehistoric structures, sites or artifacts” must report the finding and may be required to protect such resources (§ 18.68.060 ).
• Historic district overlay. The Markleeville Historic District Combined Zone governs design compatibility and review within the historic Markleeville townsite; it layers on top of the underlying zoning and does not change uses by itself (§ 18.56.010, § 18.56.020, § 18.56.040 ).

District-by-District Breakdown

MHD Markleeville Historic District Combined Zone

• Purpose. Protect and enhance the historic character of Markleeville; ensure new work is compatible with the area’s historic period of architecture (§ 18.56.010 ).
• Where it applies. The entire Markleeville townsite (~160 acres) as shown on the “Map Showing Markleeville Townsite… dated May 6, 1910” (§ 18.56.020(A) ).
• Typical permitted uses. All uses allowed by the underlying base zone; MHD does not add or subtract uses (§ 18.56.040 ).
• Key dimensional standards. Height, lot area, and setbacks follow the underlying zone unless the adopted Markleeville Design Guidelines specify greater restriction (§ 18.56.050, § 18.56.070 ). Coordinate with your base district on Development Standards.
• Design review triggers (examples). Exterior modifications requiring a building permit; demolition/removal of structures built before 1940; new structures and additions; permitted signs; new outdoor lighting; color changes in the commercial core; grading/terracing; fences/walls; new driveways/parking; small sheds >30 sq ft in the commercial core (§ 18.56.020(B) ).
• Process. A five-member Markleeville Design Review Committee conducts public meetings; review must be completed and approvals issued before any building permit or before starting an activity that doesn’t need a building permit (§ 18.56.080, § 18.56.090 ).
• Demolition/removal rule. Removing any structure placed prior to 1940 requires an approved replacement plan evidenced by a building permit, a conditional use permit (if no structure), or an approved planned development plan (§ 18.56.100 ).
• Appeals and penalties. Decisions may be appealed to the Planning Commission within 10 days; violations can carry fines up to $10,000 per occurrence, with potential liens for nonpayment (§ 18.56.110, § 18.56.120 ).
• Signs. Signs in the MHD are reviewed per the Sign Regulations; the ordinance points specifically to added review in the MHD (§ 18.74.060(D)–§ 18.74.090(B) referenced in code ). Coordinate early with Signage.

DH Design Review/Historic Combining Zone

• Designation. The zoning district list includes a DH Design Review/Historic combining zone (§ 18.12.010 ).
• Purpose/standards. Not found in retrieved materials.
• Where it applies. Not found in retrieved materials.
• Uses/dimensional standards. Not found in retrieved materials.
• Practical note. The operative historic overlay provisions retrieved are those for the MHD Markleeville Historic District Combined Zone (§ 18.56.010–18.56.120 ).

Key “What Applies, When” Standards

Interplay With Other Local Overlays and Standards

• Scenic Highway Corridor. If a project site is visible from a designated scenic highway, the Scenic Highway Corridor requirements also apply, including specific prohibitions and design expectations. The stricter rule governs when standards differ (§ 18.60.010–18.60.030 ). See Overlay Districts.
• Base zoning and site standards. MHD defers to the underlying district for uses and most dimensional standards unless the adopted design guidelines are more restrictive (§ 18.56.040–.050 ). Confirm base entitlements on Alpine County Zoning and Development Standards.
• Parking. New parking areas and driveways within the MHD are review triggers; align stall counts and layouts with countywide Parking rules while meeting MHD compatibility (§ 18.56.020(B)(9) ).
• ADUs on historic properties. State ADU law allows ADUs in historic districts; local agencies may apply objective standards to avoid adverse impacts to resources on the California Register. Expect MHD design review to apply where triggers exist (Gov. Code references summarized in the 2025 ADU Handbook) . See California ADU law.

Practical Process Tips for MHD Projects

• Bring concept-level elevations, materials, color boards, lighting cut sheets, site plans for grading/fencing/parking, and any sign designs. The Committee’s review is public and needs sufficient detail to assess guideline consistency (§ 18.56.090 ).
• If proposing demolition/removal of a pre-1940 structure, develop your replacement plan early—approval hinges on it (§ 18.56.100 ).
• Color changes in the commercial core are regulated; confirm if your building is in that mapped subarea before repainting (§ 18.56.020(B)(6) ).
• Signs in the MHD receive added review; integrate sign design with the building’s historic character and the district’s guidelines (§ 18.74.060(D)–§ 18.74.090(B) (referenced) ).

Checklist

• Confirm the site is in unincorporated Alpine County and whether it lies within the MHD Markleeville Historic District boundary (§ 18.04.040; § 18.56.020(A) ).
• Identify the underlying base zone and applicable Development Standards (§ 18.56.040–.050 ).
• Screen your scope for MHD triggers (exterior alterations, grading, fencing, lighting, signs, color changes in commercial core, new parking/driveways, new structures, pre-1940 demolition) (§ 18.56.020(B) ).
• Prepare a complete MHD design review submittal for the Markleeville Design Review Committee (§ 18.56.080–.090 ).
• If demolition/removal of a pre-1940 structure is proposed, assemble an approvable replacement plan (permit/CUP/PD) (§ 18.56.100 ).
• If visible from a scenic highway, integrate Scenic Highway Corridor requirements (§ 18.60.020–.030 ).
• Coordinate sign designs with Signage and MHD review (§ 18.74.060(D)–§ 18.74.090(B) (referenced) ).
• Plan for appeals timelines and compliance; penalties can be significant (§ 18.56.110–.120 ).
• For any cultural resource discovery during construction, report and implement protection measures as required (§ 18.68.060 ).

Risks & Ambiguities

Plain-English Summary

If you’re working in the Markleeville Historic District in unincorporated Alpine County, most visible exterior changes—plus new buildings, grading, fences, lighting, and signs—need design review to keep the look consistent with the 1850–1940 era. The overlay doesn’t change your base zoning, but it can add stricter design rules; demolishing a pre‑1940 building won’t be approved unless you’ve lined up an acceptable replacement plan (§ 18.56.020, § 18.56.050–.060, § 18.56.090–.100 ).

Source References

• Alpine County Zoning Ordinance applicability to unincorporated areas — § 18.04.040
• District list, including DH Design Review/Historic combining zone — § 18.12.010
• Markleeville Historic District Combined Zone: purpose, applicability, permitted uses, dimensional standards, historic period, guidelines, committee, procedures, demolition/removal, appeals, penalties — § 18.56.010–.120
• Countywide protection of discovered historic/prehistoric resources — § 18.68.060
• Scenic Highway Corridor Development Requirements (potentially concurrent overlay) — § 18.60.010–.030
• Sign Regulations reference to Markleeville Historic Design review — § 18.74.060(D), § 18.74.090(B) (referenced in code)
• State ADU guidance re: historic districts — 2025 California ADU Handbook (state law summary)

Retrieved passages

• Alpine County Zoning Code (Chapter 18.68) High relevance show source text
• Alpine County Zoning Code (§ 2) High relevance show source text
• Alpine County Zoning Code (chapter refers) High relevance show source text
• Alpine County Zoning Code (Section 18.08.640) Medium relevance show source text
• Alpine County Zoning Code (Section 18.56.020) Medium relevance show source text
• Alpine County Zoning Code (Section 18.56.030) Medium relevance show source text
• Alpine County Zoning Code (Chapter 18.68) Medium relevance show source text
• Alpine County Zoning Code (chapter may) Medium relevance show source text

Cited sections

• Alpine County Zoning Ordinance applicability to unincorporated areas — § 18.04.040 (§ 18.04.040)
• District list, including DH Design Review/Historic combining zone — § 18.12.010 (§ 18.12.010)
• Markleeville Historic District Combined Zone: purpose, applicability, permitted uses, dimensional standards, historic period, guidelines, committee, procedures, demolition/removal, appeals, penalties — § 18.56.010–.120 (§ 18.56.010)
• Countywide protection of discovered historic/prehistoric resources — § 18.68.060 (§ 18.68.060)
• Scenic Highway Corridor Development Requirements (potentially concurrent overlay) — § 18.60.010–.030 (§ 18.60.010)
• Sign Regulations reference to Markleeville Historic Design review — § 18.74.060(D), § 18.74.090(B) (referenced in code) (§ 18.74.060)
• State ADU guidance re: historic districts — 2025 California ADU Handbook (state law summary)
• AlpineCounty_ZoningCode.md
• 2025 California ADU handbook.md