The purpose of this paper is to clarify the origin and impact of a "Shinden-zu". This study suggests the drawing is very similar to a mid 17^<th> century residence of the Kujo-family. It is possible that Kozen refered to, or transcribed, parts of the residence's building plans when subsequently developing the "Shinden-zu" which was included in his "Inkyu-oyobi-shitei-zu". Sukehira Takatsukasa, the master of Takatsukasa-family, got the "Shinden-zu" from Kozen and built a new shinden in a Heian revivalistic style. This shinden also was a model for residences of other elite families which served as the emperor's regents. As a result the "Shinden-zu" may have had an important impact on the formation and popularization of the Heian revivalistic style of the shinden.
