About

Impact and connection fees are one of the largest, least-transparent line items in residential development — frequently 10–15% of development cost and tens of thousands of dollars per unit. Yet the numbers live in thousands of municipal PDFs, in non-standard formats, changing every year.

ImpactFeeAtlas turns that scattered public record into one normalized, source-cited database you can search, compare, and trust. Look up any jurisdiction, see the full breakdown by category and land use, and compare jurisdictions side by side for the same project.

Who it’s for

Homebuilders, multifamily and ADU developers, civil engineers, land brokers, site-selection teams, and construction lenders — anyone who needs to know what building actually costs in fees before they commit.

How the data is compiled

The ImpactFeeAtlas data team gathers each figure from official jurisdiction sources — adopted fee schedules, ordinances, and nexus studies — then independently re-checks every number against its cited source before publishing. Each row carries a source link, a verbatim quote, an effective date, and a confidence rating. We’d rather show less data than wrong data: figures we cannot verify are excluded, not estimated. Read the methodology for the full process, and always confirm current fees with the jurisdiction before relying on them.