We're looking at expanding and moving in to new office space. The place we have found however, is currently a small building, with the upper floor divided in to two separate offices 12B & 12C. We're considering taking both, and using the larger one as office space, while keeping the smaller one as a separate private office / conference room. However, correct me if I'm wrong, but only your first office is considered for business rate relief? If we were to take both, would we need to pay business rates for the second office? Given that this is going to be around £2k a year, it may be worthwhile looking at redeveloping the space to make it all one again. What would we need to do to make it considered a single space for business rates purposes? Would building a joining door between the two be enough, or would the whole adjoining wall need to be removed?