I’m not sure of your scale, buildings are my thing. It is very easy, much easier to get doors and windows that are wood, and working, if you are working in 1/2 an inch equals 1 foot, or 1/25th scale, switch your search request to 1/2 scale (half scale), this will take you over to the dollhouse world, where you are about to discover a world that carries everything.
There’s little comparison to what you are about to find, and I prefer to work with wood, if you are in America look at
www.miniatures.com.
Best of luck.