The housing rights in the area, the Municipal Housing Authority and the Municipal Housing and Rehabilitation Institute, located in Roc Boronat, 108, in the Sant Martí district, are part of a construction that began 2009 and was designed by the SaAS team (Joan Sabaté, Horacio Espeche, Neus Ayza). The Town Hall building is the first multifamily finished in Barcelona that obtains a letter A in energy rating, according to the Catalan Institute of Energy (ICAEN). The building is connected to the Districlima network to provide heat for the heating of hot water and heating. This system, which will allow 20% savings in electricity consumption and a 50% reduction in CO2 emissions, is based on the use of residual steam of the energy revaluation of urban waste. The building has an annual energy consumption of 93,758, 40 kWh and a CO2 emission of 24,090.70 kg, according to the data obtained by the Calener VYP program for normal conditions of operation and use.
In addition to the connection to Districlima, the building incorporates other systems that improve its energy efficiency, such as isolation higher than those established by regulations, ventilated facades, openings with sun protection, economizadores to faucets and tanks, installation for to bithermic electrical appliances, presence detectors, low consumption lifts, etc.
The building received the award for the 2012 Sustainable Real Estate Promotion, granted by Endesa.