I wouldn't inform the tenant of this until about a month before (or whatever the minimum length is in your lease) that you won't be re-signing him as to not cause any more tension in the relationship which could result in damaged property or him not paying rent.

I also saw some graffiti from a rival gang, which was crossed off, and tells me that there is some tension between the two groups.

Two of the shower curtain tension rods were just plain missing and they had all ripped up the paint quite badly, so I decided to replace them with permanently installed shower curtain rods, and then I provided liners (in tan, not white, for longevity) that I affixed to the wall with velcro to lessen the oversplash damage, which came to about $28 per bathroom with tax, including the dollar store shower curtain rings. 

If there was minimal or no impact, it should ease tensions.

It will probably cost me a fair amount of $ but the hope is that I'll have less tenant tension from top/bottom units.As for electrical there is a sub panel that attaches to the basement unit... might be able to do something with that.I am open to other ideas on how to deal with the heating/cooling if possible and any other helpful tips on a top/bottom rental.If the heating/cooling, water, electrical aren't separated out, then I would have to have a built in price factored into the rent instead of the tenants paying the utils themselves yes?

Money brings emotions, emotions bring tension, and you need to be able to work through that.Feel free to reach out if you want to BS about real estate! 

Asian communities in the US will also be impacted as racial tensions resurface.

Wow, I can image there was a bit of tension over the holidays.

That opens up a can of worms with fair housing laws, but also gives me a chance to make sure everyone gets along and POTENTIALLY convince prospective tenants they wouldn't be comfortable so they chose not to pursue an application.My other way of preventing tensions between renters is to target my advertising.

@Vlad Bird It appears to me that you have high-tension power lines running diagonally across the property.