To use a Neglected Plot of Land

Q: There was a neglected plot of land. It was full of garbage and belonged to the municipality. I took one half of the land and built a house on it since I could not afford to pay rental. The house cost so much and the money had been borrowed from 10 persons. Is what I did permissible?

A: If you know that the plot is owned by somebody or the government, you have to obtain the owner’s permission for using it and in case that it is of an anonymous owner, it is the authorized religious authority who should decide.