We had our 3-year township CO inspection today and were told that we need to have smoke / CO detectors that alerted both sixes of a duplex property. 

Is he looking for a new job or do you plan on using the property sales to supplement your income for the near term?

I am new to real estate investing and am on the verge of getting my 1st property underway; it's so close I can taste it! 

I would eventually like to buy and hold properties, but that will be in the future. 

What is market value of property?  

@Steven OlivasThe strategy for long-term buy-and-hold properties focuses on cash flow, appreciation, and risk mitigation.

In other words, the rental license is contingent upon the property as a whole. 

You may run into issues trying to take a HELOC out on an investment property, and even if you can I doubt you'd want to use it for a down payment for a primary because the rates are much higher.What kind of cash flow would you be generating from your multi once you move out?

We've owned this property for 15 years and only once had an issue with a tenant who claimed they weren't informed that it was oil and threatened to sue due to the added expense.

You would need to find a property manager to care for the investment until you return, which will eat into the profits.