Self-cert 2019-cbrc: alteration to repair a fire-damaged 3-story residential building and convert the basement and first floor into a duplex dwelling unit. work includes repair of fire-damaged basement, interior alteration of 1 of 2 existing dwelling units, new basement bathroom, new interior stair connecting basement to first floor, reinforcement of existing stair from first to second floor, and replacement of damaged windows throughout. associated mechanical, electrical, and plumbing work included (occupancy group r-2; type iiia construction).