Connecticut Building Codes

Current Commercial Code of Connecticut

2021 Connecticut State Building Code, based on the 2018 IBC with Connecticut-specific amendments. Includes adoption of the 2018 IECC for energy conservation standards. Effective since October 1, 2021.

Current Residential Code

2021 Connecticut State Building Code, based on the 2018 IRC with Connecticut-specific amendments. Includes adoption of the 2018 IECC for energy conservation standards. Effective since October 1, 2021.

The local building official in each jurisdiction is responsible for enforcing the Connecticut State Building Code.

Connecticut building codes

Climate Zone: 5A


Code Adoption and Change Process

Code Change Process

During the state review of model codes, any interested member of the public may submit proposals to change the language of the model codes. The Code Amendment Subcommittee (CAS) administers the adoption process and has established procedures for code change proposal submissions.

The Office of the State Building Inspector, part of the Division of Construction Services, enforces building codes, including the energy code.

Code Change Cycle

Codes are said to be updated no more than every four years, by the Connecticut General Assembly who approves codes, and legislature that sets the implementation dates.

Next Code Update

2025


History

2021 The Connecticut Codes and Standards Committee adopts the 2021 State Building Code, based on the 2018 IBC and IRC, with state-specific amendments focused on modern safety, energy efficiency, and sustainability. Effective October 1, 2021.
August 10, 2016 The Connecticut Codes and Standards Committee votes to accept the recommendations for acceptance of the Proposed 2016 State Building Codes and the 2016 State Fire Safety Code. In accordance with the requirements of Public Act 16-215, the 45-day public comment period for the final draft of the CT State Building Code began on June 21st and ended on August 5th. Comments received along with responses to those comments can be found here.
July 13, 2016 The review committee votes to adopt the 2012 IECC with weakening amendments.
February 14, 2014 The 2013 Amendment to the 2005 State Building Code adopts the 2009 IRC and the 2011 National Electric Code (NEC) into the 2005 code with state-specific changes.
October 7, 2011 After adopting the 2011 Amendment to the 2005 State Building Code on September 27th, the Department of Public Safety (DPS) submits the rule to the Secretary of State and makes them effective. The energy code for commercial and residential buildings becomes the 2009 IECC.
February 2011 The Connecticut Department of Public Safety’s State Codes and Standards Committee (SCSC) announces that it intends to review and consider proposals amending the 2009 IECC for inclusion in the 2010 Amendments to the 2005 State Building Code (which currently uses the 2006 IECC) to comply with Public Act 09-192.
December 8, 2010 The Connecticut Department of Public Safety holds a public hearing to take written and oral comments on a proposed 2011 Amendment to the 2005 State Building Code to adopt the 2009 IECC.
October 15, 2009 The Department of Public Safety releases its final draft of the 2011 Amendment to the 2005 State Building Code to adopt the 2009 IECC, along with the Summary of Comments-Responses received at a December 2010 hearing. The Draft 2011 Amendment must be submitted to the Office of the Attorney General for approval followed by the Legislative Regulation Review Committee.
August 1, 2009 The 2009 Amendment to the 2005 State Building Code proceeds through the regulatory adoption process and becomes effective. This amendment updates the energy code for residential and commercial buildings to the 2006 IECC. The provisions of this code shall apply to “the construction, alteration, movement, enlargement, replacement, repair, equipment, use and occupancy, location, maintenance, removal and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures”.
July 8, 2009 House Bill 6284, which would update the state energy code and create green building standards, is passed by the legislature and signed into law as Public Act No. 09-192 by then-Governor M. Jodi Rell. The bill requires the State Building Inspector and the Codes and Standards Committee to revise the State Building Code to incorporate the 2012 IECC for commercial and residential buildings within 18 months of its publication. The same is required of renovation projects that are expected to cost $2 million or more. Due to the problems of enforcement, efforts are made to propose overriding legislation to remove the requirement but keep the state on a path to strong energy codes.
June 4, 2007 The governor signs Public Act 07-242 into law, requiring that all buildings (except residential buildings with fewer than five units) that are projected to cost $5 million or more to qualify for a LEED Silver rating or an equivalent program, such as a two-globe rating under the Green Globes USA design program. This act takes effect on July 1, 2007.
1988 Legislative updates include provisions that require the revision of the state building code no later than July 1989, in order to incorporate necessary 1988 BOCA International revisions. Furthermore, future revisions are limited to occur not more than every four years thereafter.
1979 Legislation is passed requiring that the State Building and Fire Safety Codes (SBC) promote and ensure design and construction of energy-conserving buildings and the use of renewable resources.

Contacts

Daniel Tierney
Deputy State Building Inspector
Department of Administrative Services, Division of Construction Services
Email: daniel.tierney@po.state.ct.us

Diana Duva
Office Director
Department of Energy and Environmental Protection (DEEP)
Email: diane.duva@ct.gov

Carolyn Sarno Goldthwaite
Senior Program Manager
High Performance Buildings
Northeast Energy Efficiency Partnerships (NEEP)
Email: cgoldthwaite@neep.org


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