US building-code adoption, as open data
Which code editions does each US state and major city actually enforce? Free dataset + JSON API covering all 50 states and the 50 largest cities, built from ICC adoption records and official municipal sources.
curl https://codes.submittal.app/api/v1/states/texas.jsonAll 50 states + DC
Alabama2021Alaska2021Arizona2021Arkansas2021California2025Colorado2021Connecticut2022Delaware2021District of Columbia2017Florida2023Georgia2018Hawaii2018Idaho2020Illinois2024Indiana2018Iowa2015Kansas2021Kentucky2015Louisiana2021Maine2015Maryland2021Massachusetts2023Michigan2021Minnesota2020Mississippi2018Missouri2021Montana2021Nebraska2018Nevada2021New Hampshire2018New Jersey2021New Mexico2015New York2025North Carolina2018North Dakota2021Ohio2024Oklahoma2021Oregon2025Pennsylvania2018Rhode Island2018South Carolina2021South Dakota2021Tennessee2018Texas2021Utah2021Vermont2015Virginia2021Washington2021West Virginia2018Wisconsin2015Wyoming2021
Largest 50 US cities
City-level adoptions, hand-verified against official municipal sources — including home-rule cities whose codes differ from their state (Chicago, New York, Denver, Seattle…).
Mesa, AZPhoenix, AZTucson, AZFresno, CALong Beach, CALos Angeles, CAOakland, CASacramento, CASan Diego, CASan Francisco, CASan Jose, CAColorado Springs, CODenver, COJacksonville, FLMiami, FLTampa, FLAtlanta, GAChicago, ILIndianapolis, INWichita, KSLouisville, KYNew Orleans, LABoston, MABaltimore, MDDetroit, MIMinneapolis, MNKansas City, MOCharlotte, NCRaleigh, NCOmaha, NEAlbuquerque, NMLas Vegas, NVNew York City, NYColumbus, OHOklahoma City, OKTulsa, OKPortland, ORPhiladelphia, PAMemphis, TNNashville, TNArlington, TXAustin, TXDallas, TXEl Paso, TXFort Worth, TXHouston, TXSan Antonio, TXVirginia Beach, VASeattle, WAMilwaukee, WI
Free JSON API
Every jurisdiction is a flat JSON file — no key, no rate limits within reason, CORS enabled.
| Endpoint | Returns |
|---|---|
GET /api/v1/states.json | Index of all states |
GET /api/v1/states/<slug>.json | One state's adopted codes by cycle |
GET /api/v1/cities.json | Index of covered cities |
GET /api/v1/cities/<slug>.json | One city's adopted codes + sources |
Bulk users: clone the GitHub repo — it also includes parsed federal construction regulations (OSHA 29 CFR 1926 & 1910, ADA 28 CFR 36, and more).