This project aimed to light a single family dwelling, located in Penha Longa, in a lot with a longitudinal configuration. The new construction should promote the dialogue between the confining dwelling by the dissonance of the markedly different character, the choice of the constructive method, the metric coating and treatment given to the spans and to all facades. The lighting in this project has a very important role, each luminaire being chosen taking into account special requirements contemplating the best performance and efficiency possible.