Our mission
Impact fees — the one-time charges municipalities and counties assess on new development to fund infrastructure like water, sewer, transportation, parks, and schools — can add tens or hundreds of thousands of dollars to a project. Yet this information is scattered across thousands of city and county websites, buried in PDFs, ordinances, and resolutions.
We're building the definitive national impact fee directory so anyone evaluating a development site can understand its fee burden in minutes — with every number tied back to an official source.
The impact fee directory
Our directory catalogs impact fee schedules for cities, counties, and special districts across the US. For each jurisdiction we track water and sewer connection fees, transportation/road fees, parks and recreation, schools, fire and police, drainage, and general government fees — broken out by development type (single-family, multifamily, commercial, industrial).
- • Source-linked to the official ordinance, resolution, or fee schedule
- • Updated as jurisdictions adopt new schedules
- • Normalized across categories so jurisdictions can be compared apples-to-apples
How the calculator works
1. Locate the site
Search an address or drop a pin on the map. We reverse-geocode the coordinates to identify the responsible city and county.
2. Pick the project
Choose the development type — single-family, multifamily, commercial, or industrial — and the unit count or square footage.
3. See the breakdown
Get a category-by-category breakdown of total impact fees for the matched jurisdictions, with links to the source schedules.
Data & methodology
Fee data is collected directly from each jurisdiction's adopted fee schedule, capital improvement plan, or municipal code. Each fee entry includes the effective date, the basis (per unit or per square foot), and a link to the source document. When a jurisdiction publishes a new schedule, we update the directory and re-run estimates.
If a jurisdiction isn't yet in the directory, we mark it as "research in progress" and add it to the queue — coverage expands every week.
A note on accuracy
Estimates produced by IMPACTFEES.AI are illustrative and intended for preliminary feasibility analysis. Always verify final fee calculations with the jurisdiction before relying on them for underwriting, permitting, or closing decisions.