Official buildings and temples were decorated with tanch'ong multi-colored patterns that were first used during the Koguryo period. Since the use of the colorful tanchong patterns was restricted to temples and palaces, even upper-class houses were not painted with colors but featured many decorative elements. The houses of the lower class were generally made of logs and had little decorative woodwork. They were usually thatched.
No ordinary house, be it of the upper- or lower-class, could exceed 99 kan (a term referring to the square space inside four pillars).