Are you serious? Then buy two hectares of field, costs around 100 thousand. And develop it, and see what you spend then. Planning office, subdividing, surveying, roads in, electricity in. Sewage and possibly rainwater in, cables for electricity and telephone in. Manholes, hydrants. Set up a development plan, get it approved by the city council. Then get the development plan approved by the nature conservation authority... There have to be trees, hedgerows or bushes, there a pond... playground, footpath etc. and now you also want to earn something, so yes, it can be done easier, but not to our standards. In Sweden, you can get 5000 sqm developed for 20 thousand, but that means water, electricity, dirt road. Sewage goes into a septic tank, internet via LTE, lamps, buy yourself a Maglite, heating, chop wood.