Project renovation and expansion. That sought to optimize the space expanding while enhancing ventilation and lighting. It was also maintained green area with spaces microclimate to solve the heating problem in the northern region of Brazil which is very humid and very hot. Based on the utilization was also thought of ecological solutions such as rainwater use and green coverage of pre-cast slab of Styrofoam and concrete, LED lighting, painting with ecological paints, use of wood used in the forms of the pillars and beams , turned into furniture such as dining room table and sanitary sink countertops, the pergola and porch deck. The house had 36m2 now has a floor area of 82m2. Without fully occupy the ground and giving priority to human and environment relationship.