[pt] Em vigor desde Julho de 2013, a NBR 15575:2013 agrupa indicadores de desempenho que remetem a um modelo de moradia adequada. Com um novo conceito de construção, valoriza a atividade de projetos e o envolvimento de toda cadeia produtiva, proporcionando um salto na qualidade das edificações. Devido às características de projeto das habitações destinadas a população considerada de baixa renda, atender ao desempenho mínimo estabelecido pela NBR 15575 representará uma elevação no padrão dessas edificações. Com a proposta de padrão mínimo de desempenho, a norma de desempenho rompe o paradigma de que a qualidade das habitações deve corresponder unicamente ao padrão econômico dos usuários. Em busca de melhoria da qualidade das habitações populares, este trabalho visa avaliar o conforto ambiental nos projetos habitacionais do PMCMV – Faixa 1, na Região Metropolitana do Rio de Janeiro. A pesquisa aborda os requisitos de conforto ambiental presentes na NBR 15575 –desempenho térmico, acústico e lumínico – face aos sistemas construtivos componentes da envoltória da edificação. / [en] As a means of solving the housing deficit caused by the rapid growth of the urban population, public authorities have been promoting over the last few decades actions aimed at encouraging the production of popular housing projects. Currently, the federal government, by means of a national housing policy, is focusing investments on what is called the Band 1 of the program My House, My Life (in Portuguese, Programa Minha Casa, Minha Vida – PMCMV), which aims to create mechanisms to encourage the production and purchase of new housing units by families with monthly income of up to 1,800.00 reais. Launched in 2009, the program contracted more than 4.2 million housing units until February 2017. With that in mind, the construction of popular housing has proven committed to meeting the demand for quantity but is inefficient regarding design and construction quality. Although, for most beneficiaries, the buildings represent an evolution in their housing pattern, basic requirements of appropriate housing are depreciated. With solutions usually focused on construction speed and scale economy, a rationalization of space production prevails. Other aspects are left in the background, such as: environmental comfort criteria, functionality, proper location and even, in some cases, construction quality. Providing the market with quality environments is as important as supplying the housing demand, mainly under the perspective of the future resident. The quality of a building results in the welfare of the user promoted by the living conditions, and the architectural design is the way to develop these conditions.