updating the definition of the state building code to include the International Energy Conservation Code 2024.
HB 1180 updates New Hampshire's state building code definition to adopt the International Energy Conservation Code 2024 (IECC 2024) instead of the previous 2018 version. This change directly affects builders, architects, and developers who must comply with state building codes for new construction and major renovations. The bill requires all new projects to meet the stricter energy efficiency standards in the IECC 2024, which aims to reduce energy use in buildings. The update takes effect July 1, 2026, with minimal fiscal impact (under $10,000 annually through 2029).
Bill status
died
1 of 4 stages cleared
Introduction
Dec 2025
Committee Review
Floor Vote
Governor
Introduced Dec 1, 2025
Last action Feb 27, 2026
Floor votes
How they voted
No floor votes recorded yet.
Full legislative history
Actions timeline
Total actions
5
Key actions
1
Committee
2
Feb 27, 2026
Lower · Passed
Minority Committee Report: Ought to Pass
lower
Feb 27, 2026
Committee
Majority Committee Report: Inexpedient to Legislate 02/18/2026 (Vote 9-6; RC) HC 10 P. 87
lower
Dec 1, 2025
Introduced
Introduced 01/07/2026 and referred to Executive Departments and Administration HJ 1 P. 9
lower
1 primary · 0 co-sponsors
Sponsors
Role
Legislator
Party
State
District
P
Wendy Thomas
DDemocratic
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