Abstract: This is a concept for constructing a building entirely out of wood, the building being any house from A to Z, the ultimate objective being self-build. Once the blocks have been placed one on top of the other, and once the structure is finished, the house is complete! There is no longer any need to provide an inner or outer skin. Indeed, the inside of the blocks, the inside of the walls, can accommodate all possible and conceivable utility shafts, electric wiring, water supply pipes, heating pipes, waste pipes, ventilation and insulation . . . The design is not simply a block, that would be too easy, but a block of a certain size which, when applied in certain ways, enables an entire house or an entire building to be constructed quickly and simply.