- Update! On January 12, 2010, the California Building Standards Commission voted to adopt the 2009 International Residential Code, including its requirements for automatic fire sprinkler systems in new one- and two- family dwellings, effective 2011.
- Update! On December 11, 2009, the New Hampshire State Code Review Board voted to adopt the 2009 International Residential Code, including its requirements for automatic fire sprinkler systems in new one- and two- family dwellings.
- Update! On December 10, 2009, the Pennsylvania Independent Regulatory Review Commission voted unanimously to adopt the 2009 edition of the International Residential Code, and will require the installation of automatic sprinkler systems in all newly constructed townhouses effective January 1, 2010, and in all new one- and two family homes effective January 1, 2011.
- Update! Maryland, Iowa, and New Jersey have taken steps to adopt the 2009 IRC, including the fire sprinkler requirement for new one- and two-family homes and townhomes.
