What does it cost to build, per jurisdiction?
The normalized, source-cited database of development impact fees, water & sewer connection (tap/SDC) fees, and mitigation fees — per dwelling unit, for any city or county.
Look up any jurisdiction
Full fee breakdown by category and land use, per dwelling unit — with a built-in project calculator.
Compare side by side
The empty lane no one else fills: put two or more jurisdictions next to each other for the same project.
Sourced & dated, every number
Each figure links to the official adopted schedule, with effective dates and a confidence rating.
Where building costs the most
Total development fees per single-family home across the metros we track.
Most-searched jurisdictions
Jump straight to the impact fee breakdown for the cities and counties people look up most.
Understand impact fees
What are impact fees?
A plain-English guide to development impact and connection fees — what they fund, who pays, and how they're calculated.
Impact fee glossary
Tap fees, SDCs, nexus studies, AB 602, per-door vs. per-fixture — every term defined in one place.
2026 Impact Fee Index
Our annual analysis of where development fees are highest, lowest, and rising fastest across the U.S.
Development impact fees by state
The people who price development risk
Frequently asked questions
- What are development impact fees?
- One-time charges a local government levies on new construction to pay for the off-site infrastructure it creates demand for — roads, parks, schools, fire/police facilities, and water/sewer capacity. They're charged per new dwelling unit and are separate from building permit fees.
- How is ImpactFeeAtlas different from a city's fee schedule?
- Cities publish fees as static PDFs in non-standard formats. We normalize them into one schema — by category, land use, and per dwelling unit — so you can compare jurisdictions directly, with a link to every original source and the effective date.
- Are these the building permit fees?
- No. We cover impact/development fees, water & sewer connection (tap/SDC) fees, and mitigation fees — the capital charges that drive a pro forma. Plan-review and building-permit fees are a separate category we intentionally exclude.