Abstract
This study aims to clarify reality of projects, effectiveness of base places, and problems through study of three projects for dual-habitation without own a home. Findings are as follows; 1) A host of place running dual-habitation business by meeting a particular need. 2) Base place have the effect of reducing the economic burden, cutting down on a burden of maintenance, and showing the variety of dual-habitation styles. 3) A host of place acts as a mediator and creates a weakly link between guests and local residents. 4) It is effective to incorporate regular usage business with temporary usage business.