The plan is to equip this Biedermeier house without fossil fuels. That is why we have chosen the name ZERO CO2 NOW. The plan is: additional living space in the attic and by converting an office, a green roof and a small flower meadow with a bee hotel, the façade will be greened. Perhaps the parking bay in front of the house can also be converted into a flower meadow if the city of Vienna approves. And of course a heat pump for heating and hot water.