You can do it a few ways. Get a place near a nightclub then force the club to shut down. Almost certainly they have some regulation they’re not following.
Same with schools etc. Or sometimes the city will be planning an affordable housing thing on a lot. No one likes that so you’ll get the homes next door for cheaper. Then you can lobby for the place to become a park. Boom! Your home is now more valuable than it would be.
It’s just political arbitrage.