Can You Build an ADU in Anchorage?
ADU rules in Anchorage are set by local zoning in Alaska. Many Alaska cities allow ADUs — here's what to check, plus typical costs ($200,000–$327,500 for a 700 sq ft detached unit).
Construction costs in Anchorage track close to the Alaska state average.
Detached ADU (700 sq ft)
$200,000–$327,500
Garage conversion (400 sq ft)
$62,500–$114,500
Statewide protection
Local rules
What applies in Anchorage
We do not yet publish a verified Anchorage ordinance summary. Use this page for a planning-level cost estimate, then check Anchorage's planning or building department for rules that apply to your parcel.
Estimate your Anchorage ADU cost
Your property
ADU typeEstimated cost in Alaska
$200,000 – $327,500
≈ $286–$468/sq ft turnkey · midpoint $264,000
- $179,500
- Construction
- $47,500
- Design & permits
- $37,000
- Site work
- iSize set locally. This state leaves ADU size limits to your city — typical caps run 600–1,200 sq ft. Check your local code.
- iParking. Set by local ordinance — commonly 1 space per ADU unless near transit.
- iOwner-occupancy varies. Owner-occupancy rules are set locally in this state.
- ✓Lot has room. A 700 sq ft ADU uses about 12% of your 6,000 sq ft lot — comfortably within typical coverage limits.
Rule basis: Local zoning governs — rules vary by city/county
If you rent it out
$1,400–$2,275
est. rent/mo
8.4%
gross yield
12.8 yrs
payback
~$20,646/yr after a 7% vacancy allowance, before financing & maintenance.
Financed over 20 yrs at 7.5%, the build is about $2,127/mo — vs ~$1,850/mo in estimated rent.
Estimates are for planning only and are based on regional construction-cost indices and published statewide ADU statutes. Local ordinances, lot conditions and contractor pricing vary — always confirm with your city planning department and a licensed contractor.
Get matched with a vetted ADU builder in Anchorage
Tell us about your project and we'll introduce you to a builder who works in your area. Free, no obligation.
Other Alaska cities
Estimates are for planning only and are based on regional construction-cost indices and published statewide ADU statutes. Local ordinances, lot conditions and contractor pricing vary — always confirm with your city planning department and a licensed contractor.