Stone is assumed to be the default building material in the published rules (including brick and similar materials), but it is certainly possible to construct most buildings out of wood. The BP cost of a wooden building is half normal if using the standard published rules. If using the Construction rules in this product, this is best represented by reducing the number of months required to construct a building in half (rounding down). If the building can normally be built in just one month, this results in a construction time of zero months; this allows the building to be completed immediately (i.e., in the same month the Improvement Edict is issued to build it) and the cost is halved (rounding down). The following buildings cannot be made of wood: Brickyard, Castle, Cistern, Colossus, Crematorium, Dump, Foundry, Graveyard, Moat, Park, Sacred Grove, Waterway. Tenements are always considered wooden buildings, but their construction time is unaffected. Wooden buildings are considerably more fragile than stone buildings. Their Defense value is halved (rounding down), and wooden buildings impose a -10 penalty on Stability checks or other kingdom rolls to prevent damage or destruction. Buildings made of wood cannot provide Fame and cannot be the subject of an Endowment Edict.