ADU (Accessory Dwelling Unit) permit in Douglas, AZ
Yes — you need a permit for adu (accessory dwelling unit) work in Douglas.
Building an accessory dwelling unit (garage apartment, casita) is new residential construction and requires a permit; a dwelling unit is never in the IRC R105.2 exempt list.
| Permit needed? | Yes |
|---|---|
| Where the line falls | Building an accessory dwelling unit (garage apartment, ca… |
| Fee | Building permit fees per 15.08.010, valuation-based (residential living $52.00/sq ft, garages $28.70/sq ft); tiered schedule with filing fee. |
| Review time | Not in the ordinance |
| Code section | IRC R105.2 (adopted by reference via 15.04.010; not reprinted) |
| Based on | IRC 2006 as adopted (Douglas) |
How to pull the permit
- Put together a site plan showing where the work goes, with dimensions.
- Apply through the Douglas building department.
- Pay the permit fee when the permit is issued. Work done before that isn't covered.
- Book each inspection listed on the permit as the job reaches that stage.
If you skip it
Class 2 misdemeanor under 15.04.020, separate offense each day; $125.00 fee for work begun without a permit (15.08.010.D.1).
Nearby cities, same job
Rules stop at the city line. If your lot is near a boundary, or you work across several towns, this is where they differ.
| City | Distance | Permit? | Where the line falls |
|---|---|---|---|
| Douglas | — | Yes | Building an accessory dwelling unit (garage apartment, ca… |
| Gilbert | 184 mi | Yes | Plan on a building permit (plus electrical, plumbing, and… |
| El Paso | 186 mi | Yes | An accessory dwelling unit is a new dwelling unit in an a… |
| Chandler | 187 mi | Yes | Building an accessory dwelling unit (a casita, garage apa… |
| Mesa | 188 mi | Yes | Building an accessory dwelling unit (a casita, garage apa… |
| Tempe | 196 mi | Yes | Building an accessory dwelling unit (garage apartment, ca… |
See every Arizona city on adu (accessory dwelling unit) work
Other work in Douglas
Questions people ask
How much does a adu (accessory dwelling unit) permit cost in Douglas?
Building permit fees per 15.08.010, valuation-based (residential living $52.00/sq ft, garages $28.70/sq ft); tiered schedule with filing fee.. Valuation-based fees mean the number depends on what the job is worth, so the department quotes it when you apply.
I already built it without a permit. What now?
Douglas can issue a stop-work order and require you to apply after the fact, sometimes with an extra fee. Work that was covered up may have to be opened for inspection. Full walkthrough here.
Does unpermitted work cause problems when selling the house?
Often, yes. A buyer's inspector or the title company may flag it, and lenders can balk at financing a home with open or missing permits. What to do about it.