Have a frank conversation with the property manager. 

@Angelo Llamas If your cousin rents out the property, it becomes a rental once it's "placed in service," meaning available for rent, and he must report rental income and expenses on Schedule E.

I added value by rehabbing both of the units inside the property What was the outcome?

Figure out how to actually analyze property and practice.

What other methods should I use to acquire another property? 

My father did this in Portland on two properties, for elderly people I think. 

The city wants to tear the property and surrounding properties down Zillow said it’s worth 38000The city offer me 13000.I could use some adviceHard to give advice with limited information, but as a general rule, the longer you wait and the further down the line their project is the more valuable your property will be to them.Zillow (and all automatic online) estimates are very unreliable, so don't base on that.

However; two new pieces of legislation were proposed in 2023 to help expand these credits to more areas and extend the timeline of the credits.

I definitely wouldn't sign a purchase agreement before seeing the property.

Additionally:What is the current loan-to-value (LTV) ratio for rental properties?