If we adopt the 2009 IRC, we will most likely not adopt the sprinkler requirements. Not sure how we would look at it under the 2009, in that regard, but currently, we do require occupancy separations, as required by the 2006 IBC. As CDA mentioned, this does present all kinds of zoning issues, and usually we end up with a lively city council meeting or two and a special use permit being issued. Accessibility is another touchy point. I have been accussed of hindering small business and the right to work for enforcing the code. There is never cheese with the whine, and we usually get a nice long list of neighbors who are doing the same work/live (usually salons and lawncare businesses) without compliance or permits. Fun for everybody.