# US States > Building codes by US state — the IBC, IRC and more as adopted into law in each state. - Canonical: https://harth.build/resources/building-codes/us-states/ ## Direct answer and reference scope US States is presented here as a reference within the the listed code collection collection for Index.Mdx. Building codes by US state — the IBC, IRC and more as adopted into law in each state. Use the [state building-code authority](https://codes.iccsafe.org/codes) to confirm the code edition currently adopted for the project, and compare the model text with state amendments, local amendments, effective dates and the permit authority's interpretation. The [ICC code library](https://codes.iccsafe.org/codes) is the model-code publication path. This Harth page is a searchable reference transcription, not an official code publication, legal opinion or confirmation that this edition controls a particular address. Record the project jurisdiction, application date, occupancy, construction type and amendment set before relying on a section. Where this page conflicts with an official publication or the authority having jurisdiction, the official source controls. _Authored and prepared by Harth. Review scope: official verification path added; code text and current local applicability have not been independently reviewed._ Select a state to see the available code reference. The first current-adoption profiles are: - [Montana building codes in 2026](https://harth.build/resources/building-codes/us-states/montana.md) - [Wyoming building codes in 2026](https://harth.build/resources/building-codes/us-states/wyoming.md) The remaining state hubs are being converted from older code-text collections into current edition, effective-date, amendment and AHJ profiles. Always verify the official state and local source before relying on an edition. --- - Continue in Harth (open this topic in the Harth agent): https://app.harth.build/agent?context=%2Fresources%2Fbuilding-codes%2Fus-states%2F - View this page in a browser: https://harth.build/resources/building-codes/us-states/ - All resources for agents: https://harth.build/llms.txt