This paper overall and systematically investigates of basic design know-how on commonly indwelling timber framework in a folk house in Yeosu area. in other words, Setting the goal of 'investigates of common form of timber framework', and for this goal, surveyed and analyzed for folk house a lot of findable in Yeosu area. As a result, elicits for four types plural common form(① 4 front ‘kan’ - a hipped roof construction - front ‘toi’/3 ’ryang’ - no central pillar/side beam type, ② 4 front ‘kan’ - a hipped roof construction – front ‘toi’/3 ‘ryang’ – one side central pillar/central side beam type, ③ 4 front ‘kan’ - a hipped roof construction – front/back ‘toi’/2’kozu’5’ryang’ - no central pillar/side beam type, ④ 4 front ‘kan’ - a hipped roof construction – front/back ‘toi’/‘2kozu’5’ryang’ – one side central pillar/central side beam type). Common form is at that time, so commonly located in the head of the technician that a form that play an exemplary role in design, or it is concretely assumed for commonly aimed form. in other words, Common form is come into existence on premise for basic design data. Documentation of folk house design know-how is done through this, and the base design and specification of korean private house is written in the contents divided into by areas.