ADU Financial
Impact Estimator.

Quantify the fiscal impact of your ADU program for Select Boards, City Councils, and budget committees. Generate a 5-year revenue projection in 30 seconds.

Your Municipality's Data

Municipality Name

Current Residential Tax Rate (per $1,000) Check your assessor's website

Average Home Assessment

Average ADU Permit Fee (Total) Building + electrical + plumbing + plan review

Estimated ADU Assessment Uplift Typical: $80k–$200k added assessed value per ADU

Estimated Connection/Impact Fees per ADU

Economic & Enforcement Impact

These fields power the construction jobs estimate and enforcement cost savings — the numbers that resonate with budget committees.

Avg Construction Cost per ADU For local economic impact calculation

Estimated Unpermitted ADUs in Town Conservative: 20–50 in a mid-size NE municipality

Avg Code Enforcement Cost per Complaint Staff time + legal + inspection: $1,500–$3,500 typical

Annual Unpermitted ADU Complaints Complaints your office receives about suspected illegal units

ADU Permit Projections

Based on comparable municipalities post-reform, ADU permits typically ramp up over 3 years before stabilizing.

Year 1 — Projected ADU Permits Conservative: 5–10. Moderate: 10–20.

Year 2 — Projected ADU Permits

Year 3 — Projected ADU Permits

Year 4 — Projected ADU Permits

Year 5 — Projected ADU Permits

5-Year ADU Financial Impact

Revenue Source	Year 1	Year 2	Year 3	Year 4	Year 5	5-Year Total

Cumulative Revenue Growth

Economic & Community Impact

Enforcement Cost Savings

Ready-Made Talking Points for Elected Officials

Note: Projections are estimates based on inputs provided and do not account for inflation, assessment appeals, or changes in tax rates. Property tax revenue from ADUs begins the fiscal year following CO issuance. Provided by The ADU Exchange — theaduexchange.com