Amsterdam experiences a major housing crisis, to a large extent due to a lack of buildable space in the city. One of the solutions to address this crisis is the "floating neighbourhood" Schoonschip, consisting of 46 houses swimming on the IJ river. Schoonschip will have completely local energy sourcing with solar panels and heat pumps, a third of houses will have rooftop gardens, and waste water is recycled to water plants and create gas and fertiliser through a floating biorefinery. The neighbourhood was in planning since 2010, and the first seven boats arrived in late 2018.