In the last decade of the 20th century the Eastern Docklands, a former harbour district became available for housing. National and international architects were mobilized to create a waterfront that is almost without equal. West 8 designed the allocation of 2500 dwellings on the Borneo and Sporenburg islands in 2 different types: low-rise-high-density dwellings and patio-houses, interrupted by 3 large landmarks, The Whale, IJTower and Fountainhead. The municipality sold 60 parcels to individuals through a lottery. Professionals and national planning authorities followed this initiative with great interest. This experiment which started in 1995 resulted in a contemporary canal house typology. The patio-houses followed a master plan demand: 30%-50% void in each house. Architects were challenged to develop a typology in which a small patio served for light and private outdoor space. This regulation created new building typologies that suited the high density and back-to-back structuring.