(The 2015 International Energy Conservation Code has already been adopted.) The electrical (2017 NEC), plumbing (2015 IPC) and fuel-gas (2015 IFGC) codes are adopted at the State level. At this time the requirement for fire sprinklers in all single-family dwellings is expected to be amended out of the IRC. Other amendments will be minimal and consistent with current amendments. Read them, as proposed, here on the building department home page.
To read the I-Codes visit https://codes.iccsafe.org/public/collections/I-Codes. Watch this NEWS FLASH space for the amendments to be considered and upcoming town council hearings. Town Council will get their first look at proposed amendments in the packet for the 8/8/17 meeting. Those amendments are currently scheduled to be introduced in ordinance form at the 8/22/17 meeting where they will be considered for adoption on first reading (of two). The second reading is currently scheduled for the 9/12/17 meeting.
This is a big step up from the 2006 codes now in effect. The good people at Colorado Code Consulting, LLC, with offices in Denver, Colorado Springs, and Frisco, put together a list of significant changes, between the 2009 and 2015 editions of each code, for the City of Denver. The City of Denver is sharing this resource with other Colorado jurisdictions. Many of you are already familiar with the 2009 I-codes from working in surrounding jurisdictions. These documents (on the building department home page) will be a good place to start in making the transition.