This block house design is an experiment in maximizing daylight and living space in a traditional Philadelphia row house without losing privacy. Living spaces are made in double height with skylight which feeds natural light to every level of the house. The master bedroom and bath are situated on the third floor. The natural light floods them from 15′ glass block wall. The roof terrace features heightened parapet walls creating an external sunning space which remains open to the sky but private for neighbors. The house design is done on 2500 sq. ft. area and done by .