Although not as efficient as their sailboat, the fourth upgrade to this 1960s hexagonal building in the Netherlands (hence its name Villa 4.0) does ensure that the building's heating, cooling, and lighting will be achieved with the lowest possible energy consumption while also re-establishing its intimacy with the surrounding green plot. More details about the numerous adaptations applied to this naturally illuminated family home after the jump.

The architects stuck to the existing materials as much as possible though certain interventions, such as upgrading the outer walls and roofs, were necessary, as was insulating the building to improve its thermal efficiency. Some windows were also replaced, and inner walls were gutted to set the gaping living room free. The bedroom floors were replaced with bamboo, and skylights filter throughout the house.

Water is heated by the sun and the home via underfloor heating, as well as a very efficient wood-fired stove that is also used for cooking. All of the incandescent lamps were replaced with LED lighting that uses 90% less energy, punching a serious hole in the home’s overall carbon footprint. And for a final unique touch, a pump was installed to extract water from a nearby brook that is then splashed onto Villa 4.0?s roof, cooling the house down before the water loops back to the brook. We haven’t said much about the garden upgrades, but suffice to say this last renovation is certain to last a very long time.

Source: Dick van Gameren Architecten & InHabitat