The concept of ESG (Environmental, Social, and Governance) has gained relevance in the business landscape, driving companies to adopt more sustainable practices. The construction sector, historically associated with significant environmental and social impacts, has been called upon to incorporate ESG practices into its business strategies. This study aimed to analyze the socio-environmental strategies and practices adopted by Brazilian construction companies listed on B3, examining how they are responding to stakeholder demands and identifying the factors that facilitate or hinder the implementation of ESG practices. Additionally, it sought to understand how socio-environmental strategies and practices are perceived by the market, contributing to a deeper understanding of the adoption of ESG initiatives in the sector. Through a qualitative methodology, sustainability reports, industry reports, interviews with managers and stakeholders, and technical articles on the subject were analyzed. The results revealed a growing commitment among the sample companies to ESG practices, with a focus on energy efficiency, green buildings, waste management, and community engagement. However, the sector as a whole still lacks greater integration of ESG principles into its businesses and faces challenges such as implementation costs, a shortage of skilled labor, and operational difficulties away from major centers. The research also found that the market s perception of the sector s sustainability has improved, but there is still a long way to go before the sector is recognized as a protagonist in sustainability.