# New Hampshire — Which edition of the International Building Code, Residential Code and 15 other I-Codes each US state enforces, from the ICC's own published adoption chart

For New Hampshire, chart as of is January 2024; ibc edition is 18; irc edition is 18; imc edition is 18; ipc edition is 18, verified against its source on 2026-08-31.

- **State or territory:** New Hampshire _(verified: appears in the quote below)_
- **Chart as of:** January 2024
- **IBC edition:** 18 _(verified: appears in the quote below)_
- **IRC edition:** 18 _(verified: appears in the quote below)_
- **IMC edition:** 18 _(verified: appears in the quote below)_
- **IPC edition:** 18 _(verified: appears in the quote below)_
- **IgCC edition:** X _(verified: appears in the quote below)_
- **IPMC edition:** X _(verified: appears in the quote below)_
- **IEBC edition:** 18 _(verified: appears in the quote below)_
- **ISPSC edition:** 18 _(verified: appears in the quote below)_

## What the source says

> New Hampshire 18 18 18 18 X 18 18 X 18 18

## Source

- https://www.iccsafe.org/wp-content/uploads/Master-I-Code-Adoption-Chart-1.pdf

Last verified: 2026-08-31. Review by: 2027-02-27.
Part of [Which edition of the International Building Code, Residential Code and 15 other I-Codes each US state enforces, from the ICC's own published adoption chart](https://referencesource.org/ibc-irc-code-edition-adoption-by-state/).