Modeling the "Fargo Area Rapid Transit" in O scale 3 rail.
The yellow building in the corner is a bank:
If you google Ameritowne you will find they maker a number of three story structures suitable to your needs. If it must be one or two stories, you can cut a floor off these pretty nicely with a fine tooth saw.
Here's a better shot.
The kits come with one front wall, one side wall with three full floors of three windows per floor, one blank wall and one wall with an entrance and grage door - as shown on the green building at left.
K-line makes one
I'm trying to remember another one that I saw recently.
underworld
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