We advised her that her son also needed to apply and she replied that her son was not going to live with her and was out of town through the end of the year. 

A licensed HVAC Contr will have the right tools to test the lines and set the refrigerant levels correctly.

For example, I would need a new loan from a bank for the remaining $550,000 after the 4 years or would refinance the house for the $550,000, correct? 

You'll want to confirm how many years your PPP would be and what the penalties are as they may be a stepdown such as a 5/4/3/2/1 or they could be fixed as in a 5/5/5/5/5 for the penalty.

They stated that I would have to keep the property for a year before I can sell it.

I know regulations change almost by the quarter so what is true now is probably different last year. 

Understand the fees involved and calculate the total cost for an entire year of management so you can compare the different managers.

I currently live in Massachusetts where I have my master plumbing license so I’ve always been around construction.

We would be so grateful for any input, experience, or recommendations from homeowners or agents regarding what would be the preferred choice for 1) attracting rental guests in the short term, 2) retaining value for resale and not looking dated in 10 years, 3) protecting ourselves from accidents.  

Sunny, I am a licensed attorney in New Jersey.