The building has a recessed doorway and roof, the latter of which gives a "lip" to provide cover should one need it. Like the other Microtactix buildings, the signs are separate so that you could build duplicate buildings to flesh out your scenery. I have considered the possibility of reinforcing walls with foamcore to make the buildings more durable and to prevent warping.
What's nice about cardstock buildings is that their construction is not time-consuming. This small building was built within an hour, probably more like thirty minutes. With all cardstock construction you really need four tools: an X-acto knife for cutting and scoring, a metal ruler (don't use a wooden or plastic one--I had to have a chunk of a finger stitched back on because of that mistake), a self-healing cutting board, and a glue pen like scrap-bookers use. The glue pen is useful because the glue shows up blue but dries clear, is easily controlled, and has little water so that it prevent warping.