Orange County ADU Rules (2026): Unincorporated Zoning, Size & Permits
What ADU can you build in your Orange County backyard?
Instant zoning report — see exactly what your zoning allows: permitted ADU types, size limits, setbacks, and lot requirements for your specific property.
Orange County ADU — Key Facts
- Orange County's Ready Set Orange program offers FREE pre-approved ADU plans — bypass standard review, save 4–8 weeks
- City of Orlando, Winter Park, Apopka, and Ocoee have SEPARATE codes — verify jurisdiction first
- Max ADU size is 1,000 sq ft OR 50% of primary dwelling, whichever is less
- Owner-occupancy REQUIRED — Orange County is one of few Florida jurisdictions retaining this
- STR under 30 days prohibited in residential zones
- Long-term rental income range: $1,200–$1,800/month in unincorporated Orange County
- Permit portal: Orange EPMD (orangecountyfl.net)
Unincorporated Orange County Rules
*These rules apply if your address is NOT inside a specific city limit.
Orange County ADU Permit Process
- 1Confirm unincorporated Orange County jurisdiction.
- 2Check Ready Set Orange pre-approved plans availability — significant time saver.
- 3Verify zoning district eligibility.
- 4Hire Florida-licensed PE/RA or use pre-approved plan set.
- 5Submit application via Orange County's Orange EPMD permit portal (orangecountyfl.net).
- 6Multi-department plan review (or expedited review for Ready Set Orange plans).
- 7Respond to corrections; pass inspections.
- 8Obtain Certificate of Occupancy. Typical timeline: 4–10 months from design to CO (faster with Ready Set Orange).
Timeline: Standard review: 6–10 weeks. Ready Set Orange expedited review: 2–4 weeks. Total project: 4–10 months.
Find out what ADU you can build in your backyard
— and get a free Orange County ADU guide for your area.
Free report · No commitment · 60 seconds
Cities in Orange County
Orange County ADU — Frequently Asked Questions
The most common questions from Orange County homeowners about ADU rules, permits, and costs.
Can I build an ADU in unincorporated Orange County?
Yes. Orange County's 2024 ADU ordinance permits ADUs in R-CE, R-1A, R-1, R-2, R-3, A-1, A-2, and PD-LD zones. The Ready Set Orange program offers free pre-approved floor plans that bypass standard plan review. If your address is inside Orlando, Winter Park, Apopka, or another incorporated city, separate municipal codes apply — verify jurisdiction first.
What is the Ready Set Orange program?
Ready Set Orange is Orange County's pre-approved ADU plan library. The county offers several pre-engineered floor plans (400–800 sq ft) free to homeowners. Using a Ready Set Orange plan bypasses the standard plan review process, cutting permit timelines by 4–8 weeks and saving $3,000–$6,000 in architect/engineer design fees. Plans are available at the Orange County Government website.
Does Orange County require owner-occupancy for ADUs?
Yes. Orange County retains its owner-occupancy mandate — you must reside in either the primary home or the ADU. You cannot rent both units to separate tenants. This applies to all standard ADU permits in unincorporated Orange County.
What's the maximum ADU size in Orange County?
1,000 sq ft OR 50% of the primary dwelling's living area, whichever is less. For a 1,600 sq ft primary home, the cap is 800 sq ft (50% controls). For a 2,200 sq ft primary, the cap is 1,000 sq ft (the absolute limit). Ready Set Orange plans typically range 400–800 sq ft.
How do I know if my Orlando-area property is in unincorporated Orange County or Orlando city limits?
Use the Orange County Property Appraiser website (ocpafl.org) to look up your parcel. The 'Jurisdiction' field indicates whether you're in unincorporated county, Orlando, Winter Park, Apopka, or another municipality. Each has separate ADU rules, permit portals, and fee schedules — this jurisdiction check is the critical first step.
Florida ADU Laws 2026 — What State Law Does and Doesn't Do
How §163.31771 works, and what your local government controls.
Find out what ADU you can build in your backyard
— and get a free Orange County ADU guide for your area.
Free report · No commitment · 60 seconds