Looking at data from the city of Amsterdam, which has specific reasons for keeping track of the value of land, then a reasonable price for a piece of land in a

Looking at data from the city of Amsterdam, which has specific reasons for keeping track of the value of land, then a reasonable price for a piece of land in a good location is about EUR 3000 per m2. So for 10 m2 you would expect to pay EUR 30,000 to buy it. That would make the main annual costs the interest of a mortgage for this amount. Currently in the Netherlands that would be around EUR 900 per year. (Amsterdam keeps track of the price of land because basically the city rents out land and doesn't sell it. Price real estate owners pay is based on the estimated price of the land)