Currently we are enforcing the 2009. There were more changes between the 2006 and 2009 compared to those between 2009 and 2012.
Our code review committee consists of a dozen engineers and architects and general contractors.
They will likely complete their review of the 2012 IRC and 2012 IBC next week and then pass on their recommendations to City Council for final approval. We are currently enforcing the 2009 IECC which is consistent with our state regulation. But there is a proposal to adopt both the 2012 IECC (energy code) and 2012 IgCC (green code). Those two standards will likely get shot down without adequate time and personnel to fully analyze the cost impact related to more stringent standards, additional training of inspectors, and time required to enforce a completely new regulation.