No typical AC can lower the temp more than about 15 - 20 degrees below ambient, regardless of how long it runs.

@Jennifer FernézFirst find out if they are on a lease and its terms.

I bought my first rental duplex and one very important feature was that it came with a 2nd lot i could build on in the future or sell if i needed more cash during the renovations. 

Another scenario could be that once the investor has the deed and I've been able to do proper due diligence on the property (value, title search, etc), I would consider lending against the property including renovation funding (per my terms).   

Primary you can go as high as 90% CLTV and investment 80% Max LTV but with most DSCR or lenders 75% MAX investment.Best way to map this out or to make sure your taking the right steps with the right property is to have a long conversation with a Seasoned Banker and your realtor. 

High interest rates and dwindling capital reserves have led smaller investors, who have long driven the market, to pull back.Shift in Investor BehaviorFor years, individual investors fueled price growth through small-dollar deals, but rising interest rates have made them less aggressive.

My core investing philosophy is to approach opportunities with a long-term outlook.

We currently own 2 long-term rental properties and are looking to add more.

We are hoping to learn about flipping homes, and doing much more multi-family long-term investing!

I am fine living in it for the first year or two and have a current roommate that will rent from me for as long as we live there, so I am not too worried about negative cash flow in the first year.