Property flipping in Spain. Buy broken but low, fix in a couple months, sell. Repeat. Easy 30% but you need to manage it: find the people for the job, plumber, electrician, architect, review that the job IS done properly... everything. If you leverage that to a contractor, bye bye to your 30%. Btw IS not that much job compared to the profit, and Spain taxes "only" 19% on that if you are not spanish.