AHJInfo.com

Who has jurisdiction at this address, and what do they enforce?

Enter a property address and AHJInfo works out the city, township or county that reviews the permit, the code editions it has adopted, and its local design loads.

Search an address

Free to use with an account.

Authority having jurisdiction
Sample Township, PA
Example result
Building code in force
2018 IBC, state adopted
Basic wind speed
115 mph (Risk Cat. II)
Ground snow load
30 psf

26,040 jurisdictions on file across 56 states and territories, with the adopted state building codes on file for every state.

What one lookup gives you

Everything you would otherwise piece together from county maps, municipal ordinances and a phone call to the building department.

JurisdictionWho reviews and inspects

The borough, township, city or county that has authority at the parcel, with its office address, phone and website, and how confident the match is.

Handles county-run areas, towns that hand their review to a third-party agency, and boundaries that do not follow the ZIP code.
Codes in forceEditions and amendments

Whether the AHJ follows the state code or adopts its own, which edition of each I-code and ASCE 7 applies, and when it took effect.

Useful where the state sets no minimum and towns stay on older editions.
Design criteriaWind, snow and seismic

Basic wind speed, ground snow load and seismic values for the location and the governing ASCE 7 edition, plus any values the AHJ sets itself.
AHJ notesShared and private

Submittal quirks, required forms and who to call, from people who have permitted there. Keep private notes for your own company alongside the reviewed public ones.

How the jurisdiction is found

An address can sit in one town while its ZIP code and mailing city point to another, so AHJInfo checks it three ways.

  1. Place the address

    The address is geocoded to a point, with its county, city, ZIP code and ground elevation.

  2. Test it against boundaries

    The point is checked against mapped municipal boundaries, including islands and cut-outs.

  3. Apply county rules and history

    County-wide jurisdictions and confirmed past lookups settle the cases maps alone can't.

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