Holding building land is the guarantee that there will still be building land in 10-50 years. Joint heirs often choose money, and with that the land is back on the market. For us, the area developed in 1925, almost all garden sheds in 1990, today about 5-10% garden sheds, the rest single-family houses, semi-detached houses, but densified at a floor area ratio of 0.2.