As you can see I used a bit of plastic card for the roof, with a plastic I-beam to form the peak.
The gable is thin cereal packet (Amy's Toaster Pop packet to be precise - Apple if you were wondering). I added a shadowboxed skull from the inside of a Cities of Death building piece. Be careful removing these. They are rather thick and I managed to stab a chisel shaped X-Acto blade straight into the palm of my hand.
The base is made of some sort of plastic used in sign making. I was pretty sure the Nerd Night founder, Anton, called in Cintra or Sintra. I tried looking it up online but couldn't find it under that name. Regardless, its like 1/8" plasticard and its fairly soft. I actually use a linoleum block cutting tool to put my sidewalk lines in:
Seeing as its a pretty simple piece we'll jump right to the painting:
The entire model was sprayed with GW Rough Coat and then again with Chaos Black. The entire model with the exception of the roof was drybrushed Codex Grey and then again with Codex Grey mixed with Bleached Bone.. A third dry brush of mostly Bleached Bone was applied to all of the skulls. I went back over the skulls with a wash of heavily watered down Scorched Brown and the chains and exhaust pipes were washed with Dark Angels Green.
So what is it? Its probably representative of a grounds shed or a free standing mechanical room. You'll often see these sorts of very small buildings near rail tracks or electrical lines.