My credit isnt there and no liquid to invest according to banks but have a cosigner.

It depends on your goals and the interest rate.If your goal is to invest in more assets, and you have a low mortgage rate, why not take advantage of current 5%+ treasury money market returns (Vanguard has a couple with good returns and very low fees).

There are no tax credits for solar installations on non-owner-occupied properties.

@Chetan Malik sounds like you have Class C and D properties.We manage Class C in Detroit, but do our best to stay away from Class D.Class C for us, goes down to a 560 credit score.

I own other 2 properties one is my primary residence with my husband and the other one is borrowed with my nephew but I primarily paid everything for the house (title under me only while my nephew’s name is on the loan with me, we can’t refinance to take his name off yet bc the interest is very low.

This also includes running credit, getting an appraisal etc.

We actually have refinanced all our loans from when we first bought them to lower rates so over time our income increased because now we have low interest rates. 

Not too low either, you don't want to go with someone who is just focused on price as this is a quality of a not-so-great accountant.

Weather has played a big role since we also had 2 weeks of extremely low temps and frozen roads. 

When I saw the other unit and it was torn up, I lowed my price to $255,000 and the deal was accepted.