Municipal code source
Anaheim's page is built from Municipal Code Section 18.38.015, with source-backed fields for allowed ADUs, size, setbacks, height, separation, and entrance rules.
California ADU rules · popularity rank #8
Anaheim ADU Rules & Requirements
Anaheim ADU rules are curated from the municipal code, including detached ADUs, conversions, JADUs, setbacks, height, building separation, and entrance details. Larger answers still depend on parcel placement and code review.
Based on 5 curated rule paths from official sources. Last reviewed June 2026.
Quick facts
- Popularity rank
- #8 California ADU market
- Rule paths
- 5 curated ADU rule sets
- Detached ADU
- 800 sq ft state-floor path; up to 1,200 sq ft larger path
- Minimum unit size
- 150 sq ft
- Side / rear setbacks
- 4 ft
- Primary source
- Anaheim Municipal Code
Single-family combinations
The detached ADU path notes that a single-family lot can combine existing or proposed space, new construction, and JADU paths when official criteria are met.
Size path distinction
The curated rows distinguish the 800 sq ft state-floor path from larger detached ADU paths up to 1,200 sq ft, which helps avoid flattening distinct standards.
Check these rules against your lot
City rules explain the ceiling. Your parcel determines the practical answer: zoning, lot size, APN, setbacks, overlays, and buildable area.
Check my propertyTop California ADU city rules
Anaheim ADU FAQ
No. These pages summarize official city and state rule sources for planning research. Permit approval still depends on parcel geometry, zoning details, overlays, easements, fire access, utilities, and plan-check review.
California ADU law creates statewide minimum paths, while cities keep local standards for many project types. Showing both paths keeps the homeowner from treating a single city rule as the whole answer.
Run an address-specific feasibility check. The report combines official city rules with deterministic GIS and parcel data so the next question becomes what fits on your actual lot.
Source notes
Summaries reflect the official source listed below and the structured ADU rule data collected for HomeFeasible's first launch. Regulations change and individual parcels vary; verify current requirements with the city planning department or run a parcel-specific check before making decisions.
Anaheim Municipal Code Section 18.38.015 - Accessory Dwelling UnitsCanonical URL: https://homefeasible.com/city/anaheim/adu