Indiana Building Codes

Overview of Indiana Building Codes

indiana building codes

Indiana Building codes laws, based on the International Energy Conservation Code (IECC), provide essential standards for both, health, safety and energy-efficient construction. These codes cover insulation, HVAC systems, lighting, other materials and more, aiming to reduce energy consumption and environmental impact

Current Commercial Code of Indiana

Current Commercial Code of Indiana

Indiana Commercial Building Code, based on the 2021 International Building Code (IBC)
Effective December 13, 2021

This fire and safety code is mandatory statewide for Class 1 structures (commercial buildings and residential buildings with three or more dwelling units). The state the department provides cursory reviews of plans for all new Class 1 buildings and provides field inspections on buildings where no approved local fire or building official exists.

Current Residential Code of Indiana

 

Indiana Residential Code, based on the 2020 National Electrical Code (NEC) with Indiana amendments
Effective December 26, 2019

This code is mandatory statewide for Class 2 (one- and two-family dwellings). The city and local building official is responsible for the enforcement and compliance of the requirements and statewide code for all one- and two-family dwellings (Class 2).

 

Climate Zones: 4A, 5A


Code Adoption and Change Process

Code Change Process

Regulatory: Proposed changes to laws initially proceed through code committee meetings, and if approved, notice of intent is published in the Indiana Register. Proposed laws and rules are published 60 days after notice, and two public hearings are held. The first is held 75 days after publication of the rules, and the second hearing is held 45 days after the first hearing. The Attorney General then has 45 days to review the rules before they proceed to the Governor. If the Governor signs off on the rules, they are effective not less than 30 days after being adopted and filed with the Secretary of State.

Code Change Cycle

No set schedule

Next Code Update

The next update for the mechanical code of Indiana’s building codes, including the residential and commercial codes, is anticipated to align with the next triennial update cycle of statewide code from the ICC, which would be the 2024 editions. However, the specific adoption date for mechanical code will depend on the state’s review and amendment process, which could result in the new codes becoming effective in Indiana a year or more after the ICC publishes them online.


History

December 13, 2021 Indiana adopts the 2021 International Building Code (IBC) for commercial construction. This adoption includes the latest updates that incorporate global best practices in building safety and sustainability, ensuring that commercial construction in Indiana adheres to contemporary international standards.
December 26, 2019 Indiana updates its Residential Code to include the 2020 National Electrical Code (NEC) with state-specific amendments. This update aims to enhance electrical safety in homes, addressing modern electrical demands and technologies, thereby reducing the risk of electrical fires and other hazards.
April 5, 2012 Indiana’s residential energy code becomes effective, focusing on energy efficiency. It adopts provisions of Chapter 11 of the 2009 International Residential Code (IRC) with amendments to make it equivalent to Chapter 4 of the 2009 International Energy Conservation Code (IECC). This change marks a significant update aimed at reducing energy consumption in residential buildings through improved construction practices and materials.
November 2, 2011 Rule LSA #11-84 successfully passes through the state’s administrative review process. The rule amends the energy provisions of the 2005 Indiana Residential Code (675 IAC 14-4.3), which had been based for almost two decades on the 1992 Model Energy Code, by adopting provisions of Chapter 11 of the 2009 IRC with amendments to make it equivalent to Chapter 4 of the 2009 IECC. The rule does not propose updates to the non-energy provisions of the state’s residential code.
August 2011 After winning approval from the Office of Management and Budget (OMB), the Indiana Department of Homeland Security (DHS) posts its rule to update the 2005 Indiana Residential Code (currently based on the 1992 Model Energy Code) by adopting the 2009 IRC with amendments to make it equivalent to the 2009 IECC. Developed by the Residential Code Review Committee in 2010, the code has proceeded through the state’s administrative rule review process. The Indiana Fire Prevention and Building Safety Commission holds a hearing on September 16th to accept public comments on the rule, which will become effective 30 days after publication.
May 6, 2010 The 2010 Indiana Energy Conservation Code becomes effective. After months of rulemaking and administrative review procedures, the Indiana Fire Prevention and Building Safety Commission completes work on the first substantial commercial energy code update in nearly two decades. This new code references ASHRAE Standard 90.1-2007 as amended for Class 1 structures (commercial buildings and residential buildings with three or more dwelling units). As part of the state’s new rule adoption process, the Rule #09-388 was approved by the Commission in December 2009, repealing 675 IAC 19-3 and adding 675 IAC 19-4 to the Indiana Administrative Code. The rule was approved by the Attorney General and Governor on March 30, 2010, and became effective 30 days after its filing date of April 6, 2010.
2009 In February, House legislators introduce bills that would require the state to adopt the latest edition of either the IECC or ASHRAE 90.1 by July 1, 2010, and any subsequent editions within two years of their publication. A companion Senate bill is also introduced, though it only called for adoption of the latest IECC by July 1, 2010, and adoption of subsequent editions 18 months after their publication. On May 11th, Governor Mitch Daniels vetoes HB 1348, which would have adopted the 2009 IECC or ASHRAE Standard 90.1-2007 for commercial buildings. The governor’s veto message calls the bill “good policy,” but also “superfluous.” He cites a need to prevent redundant “clutter” within Indiana law given his direction to the state Fire Prevention and Building Safety Commission to begin the process to update the state’s energy codes months beforehand. Though the bill passes both chambers of the legislature by near-unanimous majorities (47-2 in the Senate, 96-0 in the House), a legislative override of the veto does not take place.
June 28, 2008 Governor Mitch Daniels signs Executive Order 08-14, requiring all new state buildings to earn LEED Silver certification, the EPA Energy Star rating, two Globes under the Green Globes rating system, or the equivalent under an ANSI accredited rating system. The order also requires that all renovations of existing state buildings must follow LEED, Green Globes, or other accredited guidelines. This mandate aims to promote sustainability and environmental responsibility in the construction and renovation of state buildings.

Contacts

Mara Snyder
Director, Legal and Code Services
Fire Prevention and Building Safety Commission
Email: msnyder@dhs.in.gov

Isaac Elnecave
Senior Policy Manager
Midwest Energy Efficiency Alliance (MEEA)
Email: ielnecave@mwalliance.org


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