Program Updates
February 19, 2026 - Building Resilient Infrastructure in Communities (BRIC) Survey Presentation
September 24, 2025 - The Division of Building Codes and Standards moved to the Maine Office of Community Affairs. Please direct your questions to: codes.MOCA@maine.gov
Maine Uniform Building and Energy Code
Maine Uniform Building and Energy Code (MUBEC) applies to all towns within the State of Maine. Enforcement of MUBEC is based on population or local action for communities under 4,000 residents as outlined in Chapter 1 (see below "MUBEC Rules and Laws.")
The State of Maine has amended the Maine Uniform Building and Energy Code (MUBEC). Municipalities that enforce the MUBEC, shall enforce the amended adoption as of April 7, 2025.
The Maine Uniform Building and Energy Code (MUBEC) has adopted the following codes and standards:
The International Code Council (ICC) Codes (use the sidebar to the left of the webpage for navigating the code sections):
- 2021 International Residential Code (IRC)
- 2021 International Building Code (IBC)
- 2021 International Existing Building Code (IEBC)
- 2021 International Energy Conservation Code (IECC)
- 2021 International Mechanical Code (IMC)
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Standards:
- 2019 ASHRAE 62.1 (Ventilation for Acceptable Indoor Air Quality)
- 2019 ASHRAE 62.2 (Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings)
- OR the CSA-F326-M91 Canadian Standards Association Standard for Residential Mechanical Ventilation Systems (Alternative to ASHRAE 62.2)
- 2019 ASHRAE 90.1 (Energy Standard for Buildings except Low-Rise Residential Buildings) editions without addenda.
American Society of Testing Materials (ASTM)
E-1465-2008, Standard Practice for Radon Control Options for the Design and Construction of New Low-Rise Residential Buildings.
The MUBEC is adopted by the State of Maine and applies to all buildings constructed or renovated in Maine regardless of municipal population. The MUBEC shall be adopted and enforced in municipalities with a population of 4,000 residents or more. Municipalities with populations under 4,000 may choose to adopt and enforce the MUBEC. Please verify with your local municipal code office. The MUBEC amendment chapters can be found under MUBEC Rules and Laws.
Links purely for informational purposes. The Division of Building Codes and Standards and the State of Maine do not vouch for the contents.