Because i was unfamiliar with the building system i accidently placed 3 house blueprints. two which i wanted to delete didn't hold any materials.
For one deleted house i got:
1 Bolt
1 Iron Rod
1 Iron Sheet
1 Playwood
1 Glass
1 Hardwood
1 Softwood
1 Stone
v.0.0.1.600
Probably the same version as it's only one day apart, ver 0.8.11.600. Also happens with everything besides fences/gates