Anaheim offers unique ADU opportunities in Orange County, with strong rental demand driven by tourism (Disneyland), Convention Center traffic, and a growing population seeking affordable housing options.
Zoning & Size Requirements
| Allowed Zones | All residential zones (RS-1, RS-2, RS-3, RS-4, RM-1, RM-2, RM-3, RM-4) |
| Max Size (Detached) | 1,200 sq ft |
| Max Size (Attached) | 1,200 sq ft or 50% of primary dwelling |
| Max Size (JADU) | 500 sq ft |
| Max Height | 25 ft |
| Max Units | 1 ADU + 1 JADU |
Setback Requirements
| Rear Setback | 4 ft |
| Side Setback | 4 ft |
| Front Setback | Per underlying zone |
| Parking Required | No parking required |
| Owner Occupancy | Not required |
| Min Lot Size | No minimum |
Permit Process & Fees
| Approval Process | Ministerial review |
| Review Timeline | 60 days |
| Permit Fees | $3,500-$12,000 |
| Impact Fees | Waived for units under 750 sq ft |
| Plan Check | Standard city review |
| Pre-Approved Plans | Limited availability |
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Construction Costs
| Average Build Cost | $130,000-$290,000 |
| Cost per Sq Ft | $195-$350 |
| Garage Conversion | $75,000-$165,000 |
| Prefab ADU (Installed) | $100,000-$235,000 (installed) |
Finance Your ADU Project
Most ADU projects are funded through HELOCs, construction loans, or cash-out refinancing. Compare rates from top lenders in minutes.
Compare ADU Financing Options →Rental Income Potential
| Avg Rent (1 Bedroom) | $1,700-$2,300/mo |
| Avg Rent (2 Bedroom) | $2,000-$2,800/mo |
| Short-Term Rental | Strict STR regulations; limited to certain areas |
| Est. Annual ROI | 7-10% annual return |
Explore Prefab ADU Options
Prefab ADUs can save 20-40% vs. traditional construction and cut build time in half. Compare top prefab manufacturers.
Compare Prefab ADUs →Recent Law Changes
What's Changed Recently
- SB 1211 (Jan 2025): Multifamily expansion
- AB 1033 (2024): Separate sale provisions
- City reviewing STR regulations for ADUs (2025)
Tips for Building an ADU in Anaheim
- Proximity to Disneyland creates strong short-term rental demand if permitted
- Long-term rental demand is strong due to limited affordable housing
- Tourism areas may have specific design requirements
- Consider ADA-accessible designs to expand your rental market
Frequently Asked Questions
Can I build an ADU in Anaheim?
Yes. ADUs are allowed in All residential zones (RS-1, RS-2, RS-3, RS-4, RM-1, RM-2, RM-3, RM-4) in Anaheim. The maximum size for a detached ADU is 1,200 sq ft. No owner-occupancy is required.
How much does an ADU cost in Anaheim?
ADU construction in Anaheim typically costs $130,000-$290,000. Garage conversions run $75,000-$165,000, and prefab ADUs cost $100,000-$235,000 (installed).
How much can I rent an ADU for in Anaheim?
Average ADU rents in Anaheim are $1,700-$2,300/mo for a 1-bedroom and $2,000-$2,800/mo for a 2-bedroom unit.
Do I need parking for an ADU in Anaheim?
No parking required. Check with Anaheim planning department for the latest California ADU parking rules, as many states have relaxed requirements in recent years.
How long does it take to get an ADU permit in Anaheim?
The permit review timeline in Anaheim is 60 days. Fees range from $3,500-$12,000.
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