To provide a room layout structure allowing family members or roommates to live in cooperation with concerns while making the respective lives self-sustainable.

In this room layout structure, a bathroom 5 is provided with two doorways 5a and 5b, and the persons can go in and out to/from the interior of the bathroom 5 through two doorways 5a, 5b. A grooming unit 6 is installed at one doorway 5a, and a toilet unit 11 is installed at the other doorway 5b. Thus, straight and consecutive passage and space can be formed through an inlet 6a of the grooming unit, the doorways 5a, 5b of the bathroom and an inlet 11a of the toilet unit.