Is the BFEvo scale established at 1:65? If so, anyone looking for scale buildings and such should take a look at S scale, which is 1:64. It is an American model railroading scale (I haven't seen any models for non-American stuff anyway). The buildings available are generally expensive, but there are a lot of scratch-building supplies that can be used, like windows, doors and other details. Take a look at the Walthers.com online catalog and make a search for S scale.
0 scale is 1:48 and perhaps a little too big for BFEvo, but you can find a lot of useful stuff in that scale too. For us Europeans 0 scale is - for some odd reason - set at 1:45 on the continent and 1:43.5 in the UK (hence H0 - half 0 at 1:87 - end of lecture!).