At Scale Model Central we believe small models shouldn't cost a fortune.  With that in mind we have a complete set of cabins for the same price others are selling a single building for.  These would be great to add to your layout and are ready to paint.

The roofs are separate from the base to allow interior finishing and there are holes in the bottoms for lighting.  There are support post included which can be attached using hobby glue.

Please note that the first two images are to show what can be done, no accessories are included, just the buildings.