Regarding the HELOC question, consider the interest rate on the debt.

I live on the main unit. 

As a licensed Real Estate Broker in Maine, I managed the acquisition and renovation of 1272 Lakins Rd, Etna, leveraging my expertise and industry knowledge.

We have a ongoing list of each along with their fees and what state they are licensed to collect debt in.

Eliminate debt, establish a budget, and save.

Principal balance currently at 314kProperty Details: It's essentially a "2-in-1" property, with the main unit rented out for $1,900/month and an attached ADU bringing in an additional $1,200/month.

Using HELOCs or IBC to pay off debt (simple vs amortized debt) method is effective, yet investing in assets such as rental properties or syndications might be a more strategic use of available funds than debt repayment.

To defer all of your gain, you'll want to trade up in value, replace all the debt (meaning new properties have at least $350,700 of debt), and not take any cash from the exchange (this is boot which = taxable gain).As for replacement property, it just has to be real property - meaning it can be commercial, STR, land, etc!

We lived in a little apartment above the garage and rented out the main portion of the house. 

Hey Lorenzo,I'm up in Maine, so not too far from Boston.