There's another risk, namely "community activists".

If you succeed in rehabbing in a depressed area, various rent-seekers will demand that you "share the wealth".

These folks often have considerable political clout, which has something to do with why those areas are depressed.

For some of them, your success is a problem because they're been paid to "improve the area". Since you succeeded without help, something is wrong, and it's not them. Or, you owe them.