The_Wisecrack
I did a majority of the cutting and prep work in about 1 hour. The total build time was approx. 2.5 hours including the cut time and the MDF base.
My goal was to insure the time and the materials fit the ultimate use of the building. Gamers can be rough on things.

Lowtardog
Righty. Have the recycled MDF base. It's approx 280mm x 127mm (5" x 11") and I scarfed the edges. Just for giggles I gave the rectangle a few long curves.
I'll prolly use a bit of PVA and sand. Then prime it. Add a dose of rocks and maybe a patch or two of static grass. I'm open to ideas. Heh.
For stability I like to include bases on my buildings. Next pic I'll include the extremely 'artistic' base.

I was going for a run-down, neigh-forgotten look.

Paint and embellishments are nexters.
Inputs welcomed.