Local jurisdiction · Contra Costa County
Moraga Zoning, Planning & Building Codes
What you can build in Moraga depends on its local zoning and planning code, layered on the California Building Standards Code. Ask GoCodebook about any Moraga address.
Key points
Last reviewed: July 25, 2026 · AI-generated overview · General information, not legal advice · detailsless
Compiled with AI research tools from official sources. Verify with the jurisdiction.
Overview
Moraga regulates land use through the Moraga Municipal Code Title 8 (Zoning), with most day‑to‑day standards living in the individual district chapters and area‑specific standards for Moraga Center and Rheem Park. The code combines conventional districts (e.g., residential “DUA” zones and Community Commercial) with plan‑based districts tied to the Moraga Center Specific Plan and Rheem Park Area standards. Expect objective development controls (height, setbacks, FAR, coverage) alongside robust design review and hillside/ridgeline protections. State housing mandates (especially ADUs) are implemented in Chapter 8.124.
For ADUs and JADUs that meet objective standards, Moraga must approve ministerially—with no hearing—within 60 days of a complete application (§ 8.124.100.C(1), § 8.124.120.D(1)).
How Moraga’s code is organized
- Title 8 (Zoning) provides core rules. Key anchors:
- Definitions (§ 8.04.020).
- Nonconforming uses and structures (§ 8.20.050; § 8.20.060).
- Design review procedures (§ 8.72.090; application materials cross‑referenced in § 8.12.040).
- Signs (§ 8.88.060).
- ADUs/JADUs (Chapter 8.124; procedures in § 8.124.100 and § 8.124.120; design in § 8.124.140; applicability of Article 5 in § 8.124.200).
- Hillside and ridgeline protections (Hillside Development applicability § 8.136.020; Ridgelines § 8.128.020–.030).
- Base and plan districts:
- Community Commercial (Chapter 8.36; standards § 8.36.040; height § 8.36.050).
- Moraga Center Specific Plan (MCSP) districts, including MCSP Commercial (§ 8.37.030–.040), MCSP Mixed Office/Residential (§ 8.42.050), and MCSP residential standards (§ 8.33.040–.050).
- Planned Development (PD) (Chapter 8.48; standards set at plan/CUP per § 8.56.040) and PD‑C (Chapter 8.50; implementation § 8.50.070; findings § 8.50.080).
- Overlays and area plans:
- Moraga Ranch Overlay (Chapter 8.65; applicability § 8.65.020; standards tied to MCSP Commercial via § 8.65.040; design § 8.65.050).
- Rheem Park Area standards (Chapter 8.210; applicability and tiers of changes § 8.210.030).
- Scenic Corridors (Chapter 8.132; cross‑referenced for stepbacks in § 8.37.040.A.1 and § 8.42.050.A.1; MCSP design requirements § 8.200.050).
Use the Moraga Zoning and Moraga Land Use pages to orient, then drill into the cited chapters/sections.
Zoning district families
Moraga’s mapped districts and plan areas include:
- Residential and open space
- Rural Residential (RR) and Single‑family Residential at 1‑DUA, 2‑DUA, 3‑DUA, and 6‑DUA; Institutional; MOSO and non‑MOSO Open Space. These district families are referenced where accessory uses like beekeeping are allowed (§ 8.92.080.A; § 8.92.100.A).
- Commercial and mixed‑use
- Community Commercial (CC): use controls (§ 8.36.030), site standards (§ 8.36.040), height (§ 8.36.050).
- MCSP Commercial: uses (§ 8.37.030), development standards (§ 8.37.040).
- MCSP Mixed Office/Residential: development standards (§ 8.42.050).
- MCSP Residential: density (§ 8.33.040) and development standards (§ 8.33.050).
- Planned development
- PD (standards set at master plan/CUP per § 8.56.040).
- PD‑C for commercial centers (subsequent implementation § 8.50.070; findings § 8.50.080).
- Overlays and area plans
- Moraga Ranch Overlay (applies MCSP Commercial rules within overlay boundary; § 8.65.020; § 8.65.040–.050).
- Rheem Park Area (all development subject to area‑specific design review; § 8.210.030).
Citywide development standards
Moraga regulates height, setbacks, lot coverage, floor area, open space, and parking primarily within each district. Representative standards:
- MCSP Residential (illustrative single‑family and small‑lot formats) (§ 8.33.050)
- Minimum lot area: 3,600–10,000 sq ft depending on product type; min width 50–70 ft; depth 70–90 ft.
- Setbacks: front 15–20 ft, side 5–10 ft (average 20 ft for 3‑story multi‑unit buildings), rear 15 ft.
- Height: 35 ft; max stories 2–3. Coverage: 60%. Building separation: 25 ft (2 stories) / 35 ft (3 stories).
- FAR: tied to MCSP tables; single‑lot max dwelling unit size 5,000 sq ft where one unit per lot (§ 8.33.050.A.4).
- Driveway length: 20 ft minimum for the garage approach (§ 8.33.050 Parking 1).
- MCSP Commercial (§ 8.37.040)
- Setbacks: 0 ft front/side/rear (subject to scenic corridor stepbacks).
- Height: 35 ft, 2 stories max; FAR 0.60; lot coverage 60%; landscaping required per state MWELO (§ 8.37.040.B).
- MCSP Mixed Office/Residential (§ 8.42.050)
- Setbacks: 0 ft front/side/rear (subject to scenic corridor stepbacks).
- Height: 45 ft, 3 stories max; nonresidential FAR 0.85; lot coverage 60%; residential private open space ≥ 5% of unit floor area (≥ 50 sq ft, minimum 5 ft dimension); building separation 25/35 ft (2/3 stories).
- General height on slopes and in several districts
- Many districts cap height at 2 stories/35 ft, with a 45 ft “aggregate height” allowance for stepped buildings on sloped lots, subject to design review (§ 8.24.080; § 8.36.050; § 8.32.060).
Cross‑cutting requirements
- Scenic corridors: Projects fronting or abutting a major scenic corridor must meet MCSP stepback standards (§ 8.37.040.A.1; § 8.42.050.A.1; § 8.33.050.A.5; stepbacks in § 8.200.050; corridors defined in Chapter 8.132).
- Parking: Each district points to Chapter 8.76; see the cross‑references in § 8.33.050, § 8.37.040, and § 8.42.050.
- Accessory uses and structures: Defined in § 8.04.020; beekeeping standards, locations, and limits are detailed in § 8.92.080–.090.
- Nonconformities: Limits on expansion, abandonment after 180 days, and repair/addition allowances (e.g., up to 20% residential addition; small deck allowances) are in § 8.20.050–.060.
For a consolidated view of dimensional controls, see Moraga Development Standards.
Specific plans & overlays
- Moraga Center Specific Plan (MCSP): Implemented through MCSP districts with detailed standards (e.g., MCSP Commercial § 8.37.040; Mixed Office/Residential § 8.42.050; MCSP Residential § 8.33.040–.050) and the MCSP Design Requirements (§ 8.200.050). Scenic corridor stepbacks apply to street‑facing edges (§ 8.37.040.A.1; § 8.42.050.A.1; § 8.33.050.A.5).
- Moraga Ranch Overlay District: Applies MCSP Commercial rules within its mapped area (§ 8.65.020; development standards via § 8.65.040; contextual design guidance § 8.65.050). See Moraga Overlay Districts.
- Rheem Park Area: All development is subject to area‑specific design review; the chapter defines minor/moderate/major changes and the corresponding review authority and standards (§ 8.210.030).
Building permits & review
- Design review triggers and path
- Minor exterior changes with no floor‑area increase can be approved by the Design Review Administrator (§ 8.72.090.A); larger scopes go to the Design Review Board (§ 8.72.090.B). Applications must include the materials referenced in § 8.12.040.
- Rheem Park uses its own tiered change table and requires design review for all development within the area (§ 8.210.030.B–C).
- Signs require a sign permit with tiered review by Zoning Administrator, Design Review Administrator, Design Review Board, or Town Council, depending on sign type (§ 8.88.060).
- Hillside and ridgeline approvals
- Hillside Development approvals are required for defined projects in Hillside Areas (new primary structures, >400 sq ft accessory buildings, expansions >500 sq ft or >35% footprint, certain grading/retaining, and subdivisions) (§ 8.136.020). Ridgeline protections apply per § 8.128.020–.030.
- Planned development areas
- In PD districts, standards are set at master plan/CUP; subsequent projects still require design review and building permits (§ 8.56.040; § 8.50.070).
- Building code
- Construction is subject to the California Building Standards Code. Several zoning provisions allow modifications for seismic/ADA compliance (§ 8.20.060.C.1).
- ADU permits
- Streamlined ADUs/JADUs are ministerial with a 60‑day clock (§ 8.124.100.C(1)); standard ADUs that meet objective criteria are also ministerial with a 60‑day clock (§ 8.124.120.D(1)). See “State housing law in Moraga” below.
State housing law in Moraga
- ADUs and JADUs (Chapter 8.124)
- Streamlined approvals: Ministerial, no hearing, 60‑day action if objective standards are met (§ 8.124.100.A–C; § 8.124.110).
- Key standards for by‑right types (§ 8.124.110):
- One detached ADU up to 800 sq ft, 16 ft tall, with 4 ft side/rear setbacks on a single‑family lot (§ 8.124.110.C(3)–(5)).
- Internal/“fully contained” ADUs within existing structures; no setback for conversion of a lawful accessory building (§ 8.124.110.A).
- JADU up to 500 sq ft with owner‑occupancy and efficiency kitchen; no extra parking (§ 8.124.110.B).
- Up to two detached ADUs behind a multifamily building at ≤16 ft height with 4 ft side/rear setbacks (§ 8.124.110.D).
- Standard ADUs (attached or detached) are also ministerial if they meet general, development, and design standards (§ 8.124.120.B–D; § 8.124.140).
- Inclusionary housing and incentives
- On‑site inclusionary units can access local incentives (e.g., fee deferral; reduced parking; increased height/stories; reduced setbacks/stepbacks; higher FAR/coverage) aligned with or exceeding state density bonus concessions (§ 8.180.080).
- In lower‑density for‑sale projects (RR through R‑6), ADUs may satisfy inclusionary obligations if at least 25% of primary units include an ADU ≥ 400 sq ft; projects using this option are not eligible for density bonuses (§ 8.180.090.B–C).
- Waivers/adjustments are available to avoid unconstitutional takings or where no reasonable relationship exists (§ 8.180.100).
- Other state housing mandates
- Density bonus and other California housing laws apply in addition to Moraga’s code; the code expressly aligns local incentives with state law (§ 8.180.080). SB 9 and rent stabilization provisions are not detailed in the provided source materials.
Information Gaps
- Citywide parking ratios (Chapter 8.76), detailed scenic corridor stepbacks (§ 8.200.050), and the full list of base residential district standards (RR, 1‑DUA, 2‑DUA, 3‑DUA, 6‑DUA) are referenced but not included in the source materials cited here. Verify with the jurisdiction.
- Local implementation of SB 9 and any rent stabilization/just‑cause ordinances are not found in the source materials. Verify with the jurisdiction.
Source References
- Definitions (§ 8.04.020)
- Nonconforming uses and structures (§ 8.20.050; § 8.20.060)
- Residential height (applicable districts) (§ 8.24.080)
- MCSP Residential density and standards (§ 8.33.040; § 8.33.050)
- MCSP Commercial uses and standards (§ 8.37.030; § 8.37.040)
- MCSP Mixed Office/Residential standards (§ 8.42.050)
- Planned Development and PD‑C (§ 8.56.040; § 8.50.070; § 8.50.080)
- Moraga Ranch Overlay (§ 8.65.020; § 8.65.040; § 8.65.050)
- Beekeeping and animal‑related provisions (§ 8.92.080; § 8.92.090; § 8.92.100)
- Design Review procedures and applications (§ 8.72.090; § 8.12.040)
- Sign review procedures (§ 8.88.060)
- Hillside Development applicability (§ 8.136.020); Ridgelines (§ 8.128.020–.030)
- Rheem Park Area applicability and review tiers (§ 8.210.030)
- Additional development standards (landscaping/aggregate height) (§ 8.32.060)
- ADUs/JADUs procedures, standards, and design (§ 8.124.100; § 8.124.110; § 8.124.120; § 8.124.140; § 8.124.200)
- Inclusionary incentives, ADU alternative, waivers (§ 8.180.080; § 8.180.090; § 8.180.100)
Where to read the Moraga code
The Moraga municipal and zoning code is published on Municode — view the official Moraga code library. That lets you read the ordinance section by section.
Want the ordinance itself? Read the full Moraga code text — every chapter and section, verbatim and searchable, in the GoCodebook Code Library.
GoCodebook goes beyond browsing Municode (see how they compare): it reads the Moraga ordinance together with the California Building Standards Code and answers your question — zoning, setbacks, FAR, height, ADUs, permits — with the controlling citation for your parcel.
Who this affects
Frequently asked questions
What zoning districts does Moraga have?
Moraga maps Residential districts including Rural Residential and 1‑DUA, 2‑DUA, 3‑DUA, and 6‑DUA single‑family zones, plus Institutional and MOSO/non‑MOSO Open Space (§ 8.92.080.A; § 8.92.100.A). Commercial and mixed‑use areas include Community Commercial (§ 8.36.040–.050), MCSP Commercial (§ 8.37.030–.040), and MCSP Mixed Office/Residential (§ 8.42.050). Planned Development (PD, PD‑C) and overlays like Moraga Ranch (§ 8.65.020) and the Rheem Park Area (§ 8.210.030) add area‑specific rules.
Where do I find setbacks, height, and FAR for my property?
Check the standards table in your property’s district chapter—e.g., MCSP Residential (§ 8.33.050), MCSP Commercial (§ 8.37.040), or MCSP Mixed Office/Residential (§ 8.42.050). Many districts cap structures at 2 stories/35 ft, with a 45 ft aggregate height allowance on sloped lots (§ 8.24.080; also echoed in § 8.36.050 and § 8.32.060). Scenic corridor frontages add MCSP stepbacks (§ 8.200.050, cross‑referenced in § 8.37.040.A.1; § 8.42.050.A.1; § 8.33.050.A.5).
Do I need design review to change a building exterior?
Usually yes. Minor exterior changes that don’t add floor area may be approved by the Design Review Administrator; other projects go to the Design Review Board (§ 8.72.090). In the Rheem Park Area, all development is subject to area‑specific design review with tiers for minor/moderate/major changes (§ 8.210.030). Some applications must include the submittals referenced by § 8.12.040.
How are ADUs and JADUs processed and what are the key limits?
If your ADU/JADU meets objective standards, the Planning Director must issue approval ministerially within 60 days—no hearing (§ 8.124.100.C(1); § 8.124.120.D(1)). By right, one detached ADU up to 800 sq ft and 16 ft high with 4 ft side/rear setbacks is allowed (§ 8.124.110.C); internal conversions are broadly allowed (§ 8.124.110.A). One JADU up to 500 sq ft is permitted with owner‑occupancy and an efficiency kitchen (§ 8.124.110.B). Design standards for standard ADUs are in § 8.124.140.
What parking rules apply to new projects?
Parking requirements are set in Chapter 8.76 (Off‑Street Parking and Loading). Each district points to that chapter—see the cross‑references in MCSP Residential (§ 8.33.050), MCSP Commercial (§ 8.37.040), and MCSP Mixed Office/Residential (§ 8.42.050). Verify ratios by use and district before design.
What special rules apply in Moraga Center and Rheem Park?
MCSP districts use tailored tables for uses and development standards (e.g., MCSP Commercial § 8.37.030–.040; Mixed Office/Residential § 8.42.050; MCSP Residential § 8.33.040–.050) and adopt MCSP Design Requirements and scenic corridor stepbacks (§ 8.200.050). In Rheem Park, all projects require design review with the change‑tier framework and must meet the chapter’s design standards (§ 8.210.030).
Are there local incentives for affordable or inclusionary housing?
Yes. Projects that provide inclusionary units on‑site may receive incentives like density increases, reduced parking, additional height/stories, reduced setbacks/stepbacks, higher FAR, or higher coverage, consistent with or exceeding state density bonus law (§ 8.180.080). In certain for‑sale projects (RR to R‑6), providing ADUs in at least 25% of homes can satisfy inclusionary obligations, though those projects then can’t claim density bonuses (§ 8.180.090.B–C).
Can I expand or replace a nonconforming building or use?
Nonconforming uses can’t expand or intensify and are deemed abandoned after 180 days of discontinuance (§ 8.20.050.A–C). Nonconforming structures can be repaired and, in limited cases, expanded (e.g., certain residential additions up to 20% floor area; small deck expansions) if criteria are met (§ 8.20.060.C.2–3). Some seismic/ADA alterations are allowed without a variance (§ 8.20.060.C.1).
Do I need a permit or review for signs?
Yes—most signs require a sign permit, with review level based on sign type and size: Zoning Administrator (e.g., small window/wall signs), Design Review Administrator (e.g., larger wall/projecting/awning signs), Design Review Board (e.g., monument, marquee, internally illuminated, master sign programs), and Town Council for electronic message structures (§ 8.88.060).
Does Moraga have rent control?
Not found in source materials. Check with the Town for any separate rent stabilization or just‑cause ordinances; the zoning code sections provided here do not address rent control.
General information, not legal advice.
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