You can design your building from plans on <tinkercad.com>. Then the completed files can be sent to a 3D printing company (Shapeways is one, but pretty expensive). That company can print the files in any number of materials, including both PLA and ABS plastics, metals, resin, etc. To prevent warping with PLA, make the walls at least 8 MM thick.
Russ,To replicate buildings that were once made of wood I recommend saw cutting your pieces from 1/4" thick clear acrylic. Fairly economical, when compared to 3D printing or even LASER cutting and they will last a lifetime. The secret is to glue the pieces together properly using Acrylic Solvent Cement. It really helps to watch a couple of the TAP Plastics Videos on building boxes.... "How to Glue Acrylic" and "How to Build a Box with Plastic." You can find the videos here.
Using acrylic also gives you the added benefit of being UV resistant so the windows stay clear. Wait the surfaces with automotive etching primer first and then paint with exterior house paint. We've found that this combination will last for many, many years.
TAP Plastics Manager since 1980
2016 NGRC Chairman