Photo Credit: Passive House Database

Info extracted from Passive House Catalogue. 

The intervention consisted in the energy renovation of a 12 units, multi-family apartment house in the center of the city of Donostia. The building was built at the beginning of the 20th.

All the works have been executed inside the envelope, as the facades of the building were catalogued. The classicist aesthetics of the original building were maintained. 

Principle Characteristics of the Renovation Works:

Ownership type: Private
Year of construction: Beginning 20th century
Renovation Completed: 2021
Floor area after works: 1166 m2
Structure: Stone walls of 600 mm were insulated from the inside with 80 mm of mineral wool.
Heating and energy: Ventilation systems and individual gas boiler were installed.
Energy performance: Annual heating demand13 kWh /(m2a ) calculated according to PHPP. Primary Energy Demand: 59 kWh /(m2a ) on heating installation, domestic hot water, household electricity and auxiliary electricity calculated according to PHPP
Architect: BERAITUR S.L.