After it adopted the 2009 IECC and other 2009 I-Codes in May, the New Hampshire State Building Code Review Board finalized the adoption process on December 11 as it reviewed several proposed amendments, rejecting most but approving an exemption for log homes (for further details, check the Board's website for posts of new meeting minutes). The new regulations will become effective on April 1, 2010.
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BCAP New Hampshire Code Status Page