1.A roomy space inside with no beams or pillars It keeps building strength and improves sound insulation by covering a concrete slab over void construction. Another advantage of no beams or pilllars inside rooms eases tenant's room plan. 2.Cost reduction by improvement of construction area Based on straight-line design, the curved balcony on the sidewall completes the stylish exterior design. Cost is reduced by using same frame both for usual timbers and insulators and by using precut materials. 3.Flexible room space(57 square meters) and Facilities All units are 2LDK style. ( 2 bedrooms, a living room and a dining kitchen ) A living room and one bedroom can be convertible to one big room by taking away four sliding doors. Facilities are as follows: ( including optional equipments) - Counter style kitchen (Single lever cock with built-in water purifier) - Full auto bath - Bathroom heating drier with refreshing breeze function