The building of the Belvas chocolate factory has been equipped with photovoltaic panels and with a system of heat recovery from air-conditioning devices. The power of hot air is used for producing hot water which then helps melting the chocolate when preparing pralines and truffles. Their new building will be entirely passive and designed for being even more sustainable and environment-friendly: water recovery system, geothermal heating, while fully integrated in the surrounding nature.

As the first real estate manager in the country, the Buildings Agency heavily invests in green roofs. Such roofs, for instance, can capture atmospheric dust, airborne particles and pollen. They help filtering the cities' air, have a positive impact on water and indoor temperature regulation and offer substitution habitats for several plant and animal species such as pollinating insects, birds and other invertebrates.