In France, 53% of dwellers live in single-family detached houses. This type of dwelling is considered the ideal home by almost 90% of the population, even though many of its dwellers express deception in regard to the interior space. This deception goes far beyond the pragmatic concern of m2 per person; it refers to other concepts and consideration as comfort, spatial qualities, lifestyle and social image. Ambience or ambient-environment can be defied as the interaction between the built space (architectural or urban), the natural phenomena (sunlighting, solar loads, air flow, heat transfer, humidity, noise transmission, etc) and the users. The research studies dweller's and real-estate agent's discourse about the detached house as means to understand the importance and conceptions of residential ambience.