Honmune style houses were built since late 17th century to late 19 th century, especially 209 houses still exist in Iida City. This paper reports about result of hearing investigation at 198 houses and measurement survey at 85 houses, explains architectural evaluation of Honmune style houses based on the research about the realities and change of living spaces and structures.
Living space of Honmune style houses became gloomy and closed, because expansion the second floor since the middle of 19 th century and renovation it since mid the MEIJI era to sericultural works.
