Green houses represent a crucial investment opportunity to reduce CO2 emissions and improve energy efficiency in the construction sector. However, the transition to sustainable housing poses significant economic challenges, including initial renovation costs and the perceived devaluation of existing assets. Examining the primary value drivers, the positive externalities generated at the urban level, and the implications for the real estate market, Andrea Beltratti and Alessia Bezzecchi provide a cost-benefit analysis of green houses and explore the financial and regulatory strategies needed to promote widespread adoption. Green houses not only benefit the environment but also represent an opportunity for economic growth and collective well-being.