This project in Ostuni is a new energy efficient Mediterranean house. The main elevation faces south and has a large picture window. The orientation of the building is given by the position of the sun and by the existing residual Mediterranean scrubland on the west side of the property. The construction has massive 55 cm walls and is made in two blocks. The one of the kitchen - Leaving area, has got an external wall in limestone and internal wall in tufo (soft limestone) with a thermal insulation pan between the two walls 16 cm thick. The other one, of bedrooms – bathrooms, has got an external wall in thermal brick and internally in tufo (soft limestone) with a thermal insulation pan between the two walls 14 cm thick. The bedrooms and bathrooms face north- west, on the south- east side there is a corridor studied as a buffer protection area against the morning heat. The house has wide openings facing south and west so that the shadings are fundamental, the south elevation is protected by a wide veranda and on the west side there is another veranda that needs to be integrated by vertical shading. The south window faces the garden and the pool. The solarium and the pergola complete the pool area. Behind the garage there is a wooden structure covered with canes. In the section dedicated to energy saving we will explain better the energy saving characteristics.