I would be careful with the dollar signs in your eyes. For many plots of land, especially those not designated as building land, the municipality at least has a right of first refusal, and if it is not designated as a building area, you won’t get much for it without the municipality’s assurance that the plot will be developed. My parents-in-law have the same problem. They have a plot of about 1000m², like two other neighbors, while the other two next to them each have 1500m². All of it is currently garden land. However, the plots are located between a new development area and the old village center, so the municipality wants to buy the plots to develop building land there. They offered the owners (since it is currently not building land) €10/m² (the standard land value for building land is €150/m²). They, of course, declined (for about five years now, repeatedly), because they don’t want to sell either. One neighbor tried to develop it himself once, but the municipality did not grant permission for that. I would be very cautious, so you don’t end up getting only €25,000 back from the municipality out of your €40,000 in the end. Clearing an entire plot is also not a walk in the park and not free either.