When you go for loans and have an outstanding balance on your HELOC, the loan company holds the minimum payment (e.g. the interest only payment) against you rather than principal + interest.

Read the table of principal uses and understand what uses are allowed in that particular zone, and what the requirements are for those uses (minimum lot size, setbacks, lot coverage ratios, frontage, etc.).

Typically people talk about essentially doing the BRRRR method and paying off the HELOC principal after they cash-out refinance.

They are yielding 4% almost.that would be a good emergency fund strategy and if he doesn't need the Money he could start gifting the interest payment and principal to the grandkids.Quote from @Randy Bloch: You have not provide enough information to provide much guidance. 

You are able to draw from those accounts, without penalty, once you reach the age of 59 1/2 (Although you can withdraw the principal from a Roth IRA at any time without penalty).

You have 60 in mortgage interest payments (you can't deduct principal portions of the payments), now you have a "profit" of 40. 

If so, it looks like it would be hard to cashflow as monthly income of total property 4400 - 2200 (50% rule estimate for expenses including capex) - 2600 (using zillow mortgage calculator for principal and interest) = -$400 currently.

I would check with your realtor for local market dynamics.I would ask the bank about covering the difference if the sale is less than the principal amount.

For those we research the secretary of state who the principal is and then get their contact on people finder.for tenant rep prospecting, we by batched data from data axel by a specific industry we want to target and then we buy the owners data.

What is the principal on the existing mortgage, if there is one?