100% Biobased House (Eng)

Building a modern house 100 % from biobased resources, and at the same time a 0-materials house,, since the materials for the house have to be grown back in the garden of the house. For those parts that have during completion not yet a biobased alternative , the house will (can) act as a developer center, together with students and market parties.

100 pct biobased house design 2   IMG_0591

Location needed – Thats in short the project Maxergy house. It was intended to be constructed in the “district of Tomorrow project, a real life lab by Zuyd university, but has been left out the current business case. A new location is needed, for a comparable project with market and research partners. The first design for the house came from students. The requirements were:

  • 0-energy or better
  • 100% biobased (new) material
  • installation poor design ( to avoid to much non biobased materials and large metal impacts)
  • minimization of land use ( using MAXergy and Embodied Land as tool, see download pages)

The winning student design after some adaptations scored 82% on biobased resources by weight. For remaining building parts, mostly in indoor finishing, alternative solutions have to be found. Or developed. Some we already did, described below.

Of course. Biobased and or renewable, but renewable is only renewable if renewed. So it requires a garden in which the used materials are re-grown until damage is compensated, and stocks replenished. Students of th Agricultural university Has, have made a plan fr this, complete with crop rotation schemes, and all else that is needed. (see Ill)

Aims of the project are not only to build a house but:

  • explore the market , what is available what not?
  • Students training in alternative solutions
  • demonstration of product on the market
  • creating a reference house: Which indicators/ambitions are possible
  • calculating and demonstrate the land use involved in biobased products
  • a knowledge centre for biobased building’s
  • innovation platform for biobased product developments\


The project had initially a foundations by wood columns in iron shoes fixed on stelcon plates (concrete pavement plates) The steel and iron is of course not biobased. A test with a new foundation type on the original area has been successful its pebbles and loam mix, packed in geotextile (biobased) that forms a stiff plate under pressure. The setting under tesload were very minimal, so we have a alternative.

Many other partners have been contacted and the quest fro biobased building products has been launched, among others with a few green deals with the government. Local partners and a 3d biobased printing lab.

The house is meant to have a facade cladded with thin film amorphous PV , to be able to be 0-energy. However these are not yet biobased. In time it will be organic solar cells, currently in development by several research institutes.

Contact : Ronald Rovers, +31 6 45064180  r.rovers<a>sustainablebuilding.info


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