Most likely all new mechanicals, windows, a fair amount of framing, insulation, etc., etc.

This is an obvious fair housing law violation because you are choosing which prospect get the concession.

Ultimately, clear communication and expectations handled in a respectful manner can avert any issue.

I am fairly new at being a Landlord.

You've probably heard of big Landlords losing property, but only because they were flagrantly violating Fair Housing, running a slum, or otherwise violating the law in an egregious manner.

Being a rehab loan it was still fairly expensive.   

kept using people who don't do real estate to do my taxes, and also they had horrible communication skills, I don't trust people who only see u as money.

Feel free to reach out though if you have specific questions, it is fairly common!

This allocation should be based on the fair market value of each component, typically determined through an appraisal or the values agreed upon in the purchase agreement.

In my market, which is a fairly economical place to build, I am friends with full time builders that are in their properties about $150k/door for construction level finishes.