I believe that all, if not most building in gameguru can be imported into Blender if that's what you need.. Valuable Asset's building are mostly enterable, and the price is very fair, and can also be imported into blender using the .x importer.
Windows 10 64bit, Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz, 3301 Mhz, 4 Core(s), NVIDIA GeForce GTX 960 2 gig GDDR5, 16 gigs ram