Local zoning · Mariposa County

Mariposa County — Development Standards

Q: What is the maximum building height in unincorporated Mariposa County?

The countywide maximum is 35 ft , measured from the uphill side of natural grade. Certain structures (like farm buildings) and specific equipment may exceed that by exception, and there’s a proportional setback‑increase option for up to 10 ft of extra height (§ 17.108.140) .

Q: How big does a commercial setback need to be in CG‑1?

In the CG‑1 district, buildings must be set back 100 ft from all property lines; this may reduce to 50 ft where adjacent parcels share the same zoning. Additional roadway‑adjacent setback provisions can apply (§ 17.88.030) .

Q: What are the Yosemite West Mixed‑Use (YWMU) standards?

The YWMU zone caps height at 35 ft and sets 55 ft from local street centerline and 25 ft from the front property line, with 15 ft side and 20 ft rear setbacks. It also imposes building‑to‑building separations ( 15 ft ), a 5‑acre minimum lot size, intensity caps (e.g., ≤25,000 sq ft total on a parcel) and ≤4 du/acre for multi‑family (§ 17.106.020) .

Q: What are the density and lot size rules in forest and timber areas?

For GFZ , the minimum parcel is 40 acres and density is 2 dwellings per 40 acres (§ 17.32.010) . In TEZ , the minimum parcel is also 40 acres with 2 dwellings per 40 acres (§ 17.44) .

Q: Does CG‑2 have different setbacks than CG‑1?

Setbacks and design in CG‑2 are tied to CG‑1 standards; use CG‑1 minimums unless a specific plan sets stricter criteria (§ 17.92.030; § 17.92.040; § 17.88.030) .

Q: Are there special open‑space or design rules along scenic highways?

Yes. In the Scenic Highway Overlay , many projects need a scenic review plan and must meet corridor‑specific siting, grading, and open‑space requirements—ranging 20%–60% open space depending on parcel size and slope (§ 17.65.010) .

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

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Last reviewed: July 6, 2026

Overview

This page distills how development standards work in the unincorporated areas of Mariposa County under Title 17 Zoning—setbacks, height, lot size, density, and special rules that vary by district and overlay. Many standards are countywide, while others are district-specific or modified by overlay districts. Always read standards together with your parcel’s base zoning and any applicable overlays in the Mariposa County Zoning map context.

The single most universal rule countywide: the maximum structure height is 35 ft measured from the uphill side of natural grade, with enumerated exceptions and a method of measurement defined in the code (§ 17.108.140) .

Countywide development basics

Structure height. In any land use district, buildings are limited to 35 ft above natural grade, measured from the uphill side; exceptions include certain utility structures, farm buildings (up to 60 ft), and allowance for up to an extra 10 ft if setbacks are increased proportionally (§ 17.108.140) .
Secondary residences. One secondary residence is allowed on an established parcel in all zones except commercial and industrial, subject to health, safety, setback, zoning, and applicable building code compliance (§ 17.108.150) . If pursuing an ADU, also see state rules under California ADU law.
Planned Residential Developments (PRD). Cluster projects use PRD standards; setbacks are per § 17.108.130, design criteria reference § 17.88.040(A)-(B), and parking follows referenced multi‑family criteria; minimum lot sizes and density bonus rules may apply (§ 17.88.040, § 17.108.130) .
Overlays can tighten standards. Scenic and airport overlays can add stricter height, setback, visual, and open-space rules; where an overlay conflicts with a base zone, the more restrictive standard governs (§ 17.65.010; § 17.64) .

District-by-district standards (unincorporated areas)

General Forest Zone — GFZ

Purpose. Applies to private lands, primarily within national forest boundaries; suited for low‑density residential, timber management, agriculture, and mining (§ 17.32.010) .
Typical permitted uses. Residential, sustained‑yield timber management, non‑commercial recreation; some uses (e.g., employee housing, churches) may be conditional (§ 17.32.010) .
Key dimensional standards. Minimum parcel size: 40 acres; density: 2 single‑family residences per 40 acres (§ 17.32.010) .
Where it applies. Private inholdings near or within national forest contexts (§ 17.32.010) .

Mountain Preserve Zone — MPZ

Purpose. Extremely low‑density residential on terrain‑constrained, often remote lands adjacent to public ownership (§ 17.36.010) .
Typical permitted uses. Residential, non‑commercial recreation; some mining uses by permit (§ 17.36.010) .
Key dimensional standards. Not found in retrieved materials.
Where it applies. Private lands within/adjacent to publicly owned lands (§ 17.36.010) .

Timber Exclusive — TEZ (combining/overlay)

Purpose. Carries forward Timberland Production Zone standards for timberlands; TEZ provisions control where applied (Chapter 17.44) .
Typical permitted uses. Forestry and related activities; development consistent with timberland policies (§ 17.44) .
Key dimensional standards. Minimum parcel size: 40 acres; density: 2 single‑family residences per 40 acres (§ 17.44) .
Where it applies. Lands historically designated TPZ/TEZ and similar timberlands (§ 17.44) .

Industrial Mining Zone — IMZ

Purpose. Lands with large‑scale mining or significant mineral resources (§ 17.48.010) .
Typical permitted uses. Residential; mining and processing (subject to SMARA and county code) by permit; employee housing as conditional (§ 17.48.010) .
Key dimensional standards. Minimum parcel size: 20 acres; density: 1 single‑family residence per 20 acres (§ 17.48.010) .
Where it applies. Areas mapped for industrial mining (§ 17.48.010) .

Neighborhood Commercial — CN‑2

Purpose. Neighborhood‑serving retail/services (indoor and outdoor).
Typical permitted uses. Neighborhood commercial; self‑storage is conditional with special site standards (§ 17.80; cross‑refs within § 17.76.020 and § 17.76.020(D)) .
Key dimensional standards. For self‑storage: maximum lot coverage 35%; lighting and landscaping standards emphasize shielding and native/low‑water planting (§ 17.80 cross‑referencing § 17.76.020(D)) .
Where it applies. Neighborhood nodes in unincorporated areas.

General Commercial — CG‑1

Purpose. General commercial centers accessible to state highways and primary county roads (§ 17.88.020) .
Typical permitted uses. Broad retail/service spectrum, auto/RV sales and service, theaters, churches, lumber yards, warehousing; accessory utility and employee‑serving facilities (§ 17.88.020) .
Key dimensional standards. Minimum parcel size: 20 acres; density: 1 single‑family residence per 20 acres; setbacks: 100 ft from all property lines (reducible to 50 ft if adjacent parcels have the same zoning); additional roadway‑adjacent setback provisions apply (§ 17.88.020; § 17.88.030) .
Where it applies. Highway/primary road corridors in unincorporated areas (§ 17.88.020) .

General Commercial — CG‑2

Purpose. Larger or more intensive commercial projects.
Typical permitted uses. As allowed by district plan; follows CG‑1 for many development criteria.
Key dimensional standards. Setbacks and design follow CG‑1 standards (§ 17.92.030; § 17.92.040) .
Where it applies. Designated general commercial areas in unincorporated communities.

Resort Commercial — CR

Purpose. Highway‑related and tourist services; standards intended to keep traffic moving and provide broad tourist services (§ 17.96.010) .
Typical permitted uses. Tourist‑serving commercial and lodging.
Key dimensional standards. Not found in retrieved materials.
Where it applies. Tourist corridors in unincorporated areas.

Light Manufacturing & Industrial — M‑1

Purpose. Light industrial areas that can be near commercial/residential (§ 17.100.010) .
Typical permitted uses. Wide array of light manufacturing, assembly, processing, warehousing, utilities; no conditional uses listed (§ 17.100.020) .
Key dimensional standards. Not found in retrieved materials.
Where it applies. Industrial locations with highway/primary road access (§ 17.100.020) .

Heavy Manufacturing & Industrial — M‑2

Purpose. Heavy industrial uses.
Typical permitted uses. Per the M‑2 plan; references CG‑1 for development criteria.
Key dimensional standards. Setbacks and parking/development within setbacks follow CG‑1 minimums; design follows CG‑1 criteria (§ 17.104.030; § 17.104.040) .
Where it applies. Designated heavy industrial areas in unincorporated communities.

Yosemite West Mixed‑Use — YWMU

Purpose. Serve Yosemite West’s vacation‑rental community with support uses (§ 17.106.010) .
Typical permitted uses. Multi‑family housing, laundromats (not for public), maintenance support, private offices, self‑storage for private use, one SFR plus secondary residence, vacation rentals/B&Bs per county code; limited conditional bulk fuel storage (§ 17.106.020) .
Key dimensional standards. Height: 35 ft; front setback: 55 ft from local street centerline and 25 ft from front property line/ROW; side: 15 ft; rear: 20 ft; building‑to‑building: 15 ft; min lot: 5 acres; intensity caps include ≤5,000 sq ft for certain commercial structures, ≤4,000 sq ft per multi‑family building, ≤25,000 sq ft total building area per parcel; multi‑family density: ≤4 du/acre; limited signage and dark‑sky lighting; parking minimums by unit/uses (§ 17.106.020) .
Where it applies. The Yosemite West community in the unincorporated county (§ 17.106.010) .

Public Domain — PDZ

Purpose. Federal public lands outside Yosemite National Park; uses are governed primarily by federal regulations with limited county authority (§ 17.52.010) .
Typical uses. Timber management, grazing/agriculture, mining and mineral processing, non‑commercial recreation, hydro‑electric generation (§ 17.52.010) .
Key dimensional standards. Not typically used for private site development; development is governed by primary uses and federal policy (§ 17.52.010) .
Where it applies. Publicly owned lands under USFS/BLM outside the national park (§ 17.52.010) .

Overlays that change development standards

Scenic Highway Overlay — SHO. Requires a scenic review plan before grading, building, or establishing most uses visible from designated scenic corridors; uses and standards follow the principal zone but add special limits (e.g., prohibition on off‑site signs, open‑space minimums ranging 20%–60% based on parcel size and slope, vegetation and grading controls). The more restrictive standard (overlay vs. base zone) prevails (§ 17.65.010) . If your project sits on a scenic corridor, expect additional design review-like scrutiny under § 17.65.010.
Airport Overlay — APO. Imposes height limits keyed to FAA imaginary surfaces and the Mariposa‑Yosemite Airport ALUC plan (no structure may exceed the imaginary surface or 35 ft, whichever is less if below the surface; 35 ft otherwise); residential within certain CNEL contours requires noise analysis and insulation; plan and zoning amendments in the influence area require ALUC consistency review (§ 17.64) .

Quick-reference standards

Topic	Zone/Area	Core standard	Practical note	Code Reference
Maximum structure height	Countywide	35 ft above uphill natural grade; exceptions and measurement method defined	Extra 10 ft possible if all setbacks increase 1:1	§ 17.108.140
Setbacks	CG‑1	100 ft from all property lines; may reduce to 50 ft if adjacent parcels share zoning	Additional roadway‑adjacent provisions apply	§ 17.88.030
Min parcel size	CG‑1	20 acres	Applies to parcel splits/creation	§ 17.88.020
Density	CG‑1	1 SFR per 20 acres	Residential allowed but limited	§ 17.88.020
Min parcel size	GFZ	40 acres	Forest/timber inholdings	§ 17.32.010
Density	GFZ	2 SFR per 40 acres	Low‑density standard	§ 17.32.010
Min parcel size	IMZ	20 acres	Industrial mining lands	§ 17.48.010
Density	IMZ	1 SFR per 20 acres	Residential accessory to mining	§ 17.48.010
Min parcel size	TEZ	40 acres	Timber exclusive	§ 17.44
Density	TEZ	2 SFR per 40 acres	Combining/overlay context	§ 17.44
YWMU setbacks	YWMU	55 ft from local street centerline and 25 ft from front line/ROW; 15 ft side; 20 ft rear; 15 ft bldg‑to‑bldg	Applies to all uses in YWMU	§ 17.106.020
YWMU intensity	YWMU	Max 5,000 sq ft (certain commercial); 4,000 sq ft/MF building; ≤25,000 sq ft total; ≤4 du/acre for MF	Dark‑sky lighting; sign cap 3 signs/50 sq ft	§ 17.106.020
Self‑storage lot coverage	CN‑2	35% max	Plus lighting/landscaping submittals	§ 17.80/§ 17.76.020 cross‑refs
Scenic overlay open space	SHO	20%–60% required based on parcel size and slope	Applies to MF/commercial/industrial; added design controls	§ 17.65.010
Airport overlay height	APO	≤ imaginary surface or 35 ft (more restrictive applies)	Noise study/insulation in certain CNEL areas	§ 17.64

Related topics often triggered by development standards: parking, signage, landscaping and screening, nonconforming uses, and variances and exceptions. Construction standards live under the California Building Standards Code and are outside this zoning page.

Information Gaps

Residential zones RRZ, MHZ, MTZ, MGZ: dimensional standards (setbacks, lot size, coverage) — Not found in retrieved materials.
Resort Commercial (CR): detailed setbacks, minimum lot size, coverage — Not found in retrieved materials.
Light Industrial (M‑1): minimum lot size, setbacks, and density — Not found in retrieved materials.
Neighborhood Commercial (CN‑1/CN‑2): base minimum parcel sizes and general setbacks (outside of CN‑2 self‑storage and cross‑references) — Not found in retrieved materials.
Any countywide Floor Area Ratio (FAR) controls — Not found in retrieved materials.
Verify parcel‑specific applicability in town planning areas and special plans — Verify with the jurisdiction.

Checklist

Confirm your parcel’s base zoning and any overlays in the unincorporated county (zoning; overlay districts).
Check the countywide 35 ft height limit and any overlay caps (APO/SHO) (§ 17.108.140; § 17.64; § 17.65.010) .
Verify minimum lot size and allowed residential density for your district (e.g., GFZ 40 ac/2 per 40 ac, CG‑1 20 ac/1 per 20 ac, TEZ 40 ac/2 per 40 ac) (§ 17.32.010; § 17.88.020; § 17.44) .
Apply district setbacks (e.g., CG‑1: 100 ft; YWMU: 55 ft CL/25 ft front, 15/20 sides/rear) and any overlay‑specific siting rules (§ 17.88.030; § 17.106.020; § 17.65.010) .
If in SHO, prepare a scenic review plan; confirm open‑space percentage and visual mitigation (§ 17.65.010) .
Check parking, lighting, signage, and landscaping requirements tied to your use/district (parking; signage; landscaping and screening); CN‑2 and YWMU include specific standards (§ 17.80/§ 17.76.020; § 17.106.020) .
For secondary residences, confirm local allowances and any state ADU constraints (§ 17.108.150; see California ADU law) .
If existing improvements are nonconforming, verify what can continue or expand (nonconforming uses; § 17.08.030) .
Where strict standards create hardship, consider a variance (see § 17.120—verify details with County) .

Risks & Ambiguities

Issue	Why it matters	What to verify
Height measurement on slopes	Height is from uphill natural grade; wrong datum can trigger a violation	Confirm grade baseline and exceptions under § 17.108.140
Roadway vs. property line setbacks	Some districts (e.g., YWMU) use both centerline and property‑line setbacks	Survey centerline and ROW; apply the larger required offset (§ 17.106.020)
Overlay conflicts	SHO/APO can override base zoning with stricter limits	Apply the more restrictive rule; obtain required scenic/ALUC reviews (§ 17.65.010; § 17.64)
Lot size and density in resource zones	Many zones are acreage‑based; splitting below minimum is prohibited	Check your zone’s minimum parcel size/density (e.g., GFZ, IMZ, TEZ) (§ 17.32.010; § 17.48.010; § 17.44)
Commercial/industrial setback inheritance	CG‑2 and M‑2 defer to CG‑1 standards	Use CG‑1 minimums unless a plan sets stricter rules (§ 17.92.030; § 17.104.030; § 17.88.030)
Nonconforming situations	Existing uses/structures may be legal-nonconforming with limits on expansion or change	Confirm status and limits per § 17.08.030; appeals/variances may apply

Plain-English Summary

Outside the incorporated towns, Mariposa County’s zoning sets a 35‑ft height cap, large minimum parcel sizes in resource and industrial zones, commercial setbacks often at 100 ft, and special Yosemite West mixed‑use rules. Overlays (scenic and airport) can add stricter height, open‑space, and design controls—so check both your base zone and any overlays before laying out setbacks, building height, and site circulation.

Source References

§ 17.04.030 Establishment of zoning and combining districts (Title 17 Zoning)
§ 17.32.010 General Forest Zone (GFZ) — uses, minimum parcel, density
§ 17.36.010 Mountain Preserve Zone (MPZ) — purpose and uses
§ 17.44 Timber Exclusive Zone (TEZ) — minimum parcel and density
§ 17.48.010 Industrial Mining Zone (IMZ) — purpose, minimum parcel, density
§ 17.76.020/§ 17.80 CN standards — signage/lighting cross‑refs; CN‑2 self‑storage coverage/landscaping/lighting
§ 17.88.020; § 17.88.030 General Commercial CG‑1 — uses, minimum parcel/density, setbacks
§ 17.92.030–.070 General Commercial CG‑2 — references to CG‑1 standards
§ 17.96.010 Resort Commercial (CR) — purpose and intent
§ 17.100.010–.020 Light Manufacturing (M‑1) — purpose and permitted uses
§ 17.104.030–.040 Heavy Manufacturing (M‑2) — setbacks/design via CG‑1
§ 17.106.010–.030 Yosemite West Mixed‑Use (YWMU) — development standards/procedures
§ 17.64 Airport Overlay (APO) — height/noise/ALUC review
§ 17.65.010 Scenic Highway Overlay (SHO) — plan, open space, design controls
§ 17.108.140–.150 Supplementary Standards — height; secondary residences
§ 17.08.030 Nonconforming provisions — general continuity/expansion rules

Sources

Retrieved passages

Mariposa County Zoning Code (section 17.108.120) High relevance
Mariposa County Zoning Code (Section 17.08.140) High relevance
Mariposa County Zoning Code (title notwithstanding) High relevance
Mariposa County Zoning Code (Chapter 17.108.) High relevance
Mariposa County Zoning Code (Chapter 17.08) High relevance
CFC § 17.108.140 (section is) High relevance
Mariposa County Zoning Code (section 17.88.020) High relevance
Mariposa County Zoning Code (section 17.108.200) High relevance

Cited sections

§ 17.04.030 Establishment of zoning and combining districts (Title 17 Zoning) (§ 17.04.030)
§ 17.32.010 General Forest Zone (GFZ) — uses, minimum parcel, density (§ 17.32.010)
§ 17.36.010 Mountain Preserve Zone (MPZ) — purpose and uses (§ 17.36.010)
§ 17.44 Timber Exclusive Zone (TEZ) — minimum parcel and density (§ 17.44)
§ 17.48.010 Industrial Mining Zone (IMZ) — purpose, minimum parcel, density (§ 17.48.010)
§ 17.76.020/§ 17.80 CN standards — signage/lighting cross‑refs; CN‑2 self‑storage coverage/landscaping/lighting (§ 17.76.020)
§ 17.88.020; § 17.88.030 General Commercial CG‑1 — uses, minimum parcel/density, setbacks (§ 17.88.020)
§ 17.92.030–.070 General Commercial CG‑2 — references to CG‑1 standards (§ 17.92.030)
§ 17.96.010 Resort Commercial (CR) — purpose and intent (§ 17.96.010)
§ 17.100.010–.020 Light Manufacturing (M‑1) — purpose and permitted uses (§ 17.100.010)
§ 17.104.030–.040 Heavy Manufacturing (M‑2) — setbacks/design via CG‑1 (§ 17.104.030)
§ 17.106.010–.030 Yosemite West Mixed‑Use (YWMU) — development standards/procedures (§ 17.106.010)
§ 17.64 Airport Overlay (APO) — height/noise/ALUC review (§ 17.64)
§ 17.65.010 Scenic Highway Overlay (SHO) — plan, open space, design controls (§ 17.65.010)
§ 17.108.140–.150 Supplementary Standards — height; secondary residences (§ 17.108.140)
§ 17.08.030 Nonconforming provisions — general continuity/expansion rules (§ 17.08.030)
MariposaCounty_ZoningCode.md

Official Mariposa County code library

Frequently asked questions

What is the maximum building height in unincorporated Mariposa County?

The countywide maximum is 35 ft, measured from the uphill side of natural grade. Certain structures (like farm buildings) and specific equipment may exceed that by exception, and there’s a proportional setback‑increase option for up to 10 ft of extra height (§ 17.108.140) .

How big does a commercial setback need to be in CG‑1?

In the CG‑1 district, buildings must be set back 100 ft from all property lines; this may reduce to 50 ft where adjacent parcels share the same zoning. Additional roadway‑adjacent setback provisions can apply (§ 17.88.030) .

What are the Yosemite West Mixed‑Use (YWMU) standards?

The YWMU zone caps height at 35 ft and sets 55 ft from local street centerline and 25 ft from the front property line, with 15 ft side and 20 ft rear setbacks. It also imposes building‑to‑building separations (15 ft), a 5‑acre minimum lot size, intensity caps (e.g., ≤25,000 sq ft total on a parcel) and ≤4 du/acre for multi‑family (§ 17.106.020) .

Do airport rules change what I can build?

Yes. In the Airport Overlay, your building cannot exceed the applicable FAA imaginary surface or 35 ft (whichever is less where the ground is below the surface). Some residential projects require a noise study and insulation; plan/zoning changes in the influence area need ALUC review (§ 17.64) .

What are the density and lot size rules in forest and timber areas?

For GFZ, the minimum parcel is 40 acres and density is 2 dwellings per 40 acres (§ 17.32.010) . In TEZ, the minimum parcel is also 40 acres with 2 dwellings per 40 acres (§ 17.44) .

Does CG‑2 have different setbacks than CG‑1?

Setbacks and design in CG‑2 are tied to CG‑1 standards; use CG‑1 minimums unless a specific plan sets stricter criteria (§ 17.92.030; § 17.92.040; § 17.88.030) .

Are there special open‑space or design rules along scenic highways?

Yes. In the Scenic Highway Overlay, many projects need a scenic review plan and must meet corridor‑specific siting, grading, and open‑space requirements—ranging 20%–60% open space depending on parcel size and slope (§ 17.65.010) .

Can I add a second home on my property?

A secondary residence is allowed on an established parcel in all non‑commercial and non‑industrial zones if it meets health, safety, setback, zoning, and building code standards (§ 17.108.150) . State ADU law may provide additional pathways—see our overview of California ADU law.

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