Nationwide ADU planning tool
Estimate ADU Permit Fees Before You Build.
Compare city-specific permit, plan check, impact, school, utility, and inspection fee estimates before committing to an ADU design.
Informational estimate, not official city advice. Every result shows confidence and review date.
Free ADU fee calculator
Estimate local ADU fees
Step 1 of 5: Location
The calculator uses staged city data from the ADUFee database with visible confidence levels and dated source tracking.
Permit
Building permit and valuation-based city charges.
Plan check
Review fees for building, fire, planning, and resubmittals.
Impact
State and local development impact fee treatment.
School
District fees that may apply above size thresholds.
Utility
Water, sewer, electric, meter, and connection uncertainty.
Popular cities
City-specific ADU fee calculators
Akron
Summit County, Ohio
Albany
Albany County, New York
Albuquerque
Bernalillo County, New Mexico
Allentown
Lehigh County, Pennsylvania
Anaheim
Orange County, California
Anchorage
Anchorage County, Alaska
Ann Arbor
Washtenaw County, Michigan
Antioch
Contra Costa County, California
Appleton
Outagamie County, Wisconsin
Arlington
Tarrant County, Texas
Paid report
A planning memo homeowners can share
The $29 Basic ADU Fee Report is designed to package the estimate, assumptions, source notes, and verification checklist into a polished PDF.
ADU Fee Estimate Report
Project summary and fee range
Detailed fee category table
Assumptions, source notes, and confidence labels
City verification checklist