For one, they typically will not lower the contract price, they need to protect their comps, so the credit has to be used for closing costs, rate buy downs and "upgrades."

We identified key areas for improvement and implemented targeted upgrades that enhanced the property's appeal.

By making targeted upgrades and ensuring the property was well-maintained, I was able to enhance its appeal to prospective tenants, thereby increasing occupancy rates and rental income.

Replaced the roof, replaced the flooring with lvp, fresh paint, upgraded the fridge to a high end model.

I already own (outright) the home i'm living in (albeit, I want an upgrade soon.) 

We stick to the 1960's inventory, which is easier to work on, but I totally agree cash flow as in "replace my W2" is a myth, it is necessary and also better to re-invest cash into asset upgrades. 

She is actually okay for the past few years until she saw that I have totally rehabbed one unit when tenant moved out and I guess she feel jealous and have since demanded a lot of repair/upgrade and started making a lot of accuse saying mold issue causing health issues but at the mean time trash my yard and keep the common area dirty.

You upgrading the property, thus increasing the value which in turn could push out the current tenants, contributes to the vitality of that free market, a market that gives the tenants alternative options. 

Brown field is approved for a many year upgrade with a very large total budget.

We don’t quite have the time/resources to do a total renovation, but we were always hoping to house hack in a decent multifamily that we could do some cosmetic upgrades on and could hold and sell down the line after he moves from Ft.