If you are hard working it can initially supplement your income.

I own some acreage that I cash rent for grain and also have a tiny home on it to supplement rental income.

Without supplemental income you want to be more conservative, but with supplemental income you can stretch these a bit

I am using a HELOC on my first duplex to help supplement me on the second property.

There are also supplement loan features built into commercial financing that allow cash out once the property has been re-positioned.The most important factor is the profit per property...profit per unit is not as relevant. 

If you've got steam, things can get complicated, however you might be able to clean up your living area by removing the radiators and adding forced air.High velocity is a nice option if you have a finished basement or finished attic / 3rd floor.Finally, the mini-splits can be great to supplement heating and add cooling.

@Austin Janiszewski if your current primary (Property A) is renovated and will generate positive cash flow after renting, consider this scenario:Instead of selling, utilize Property A as a source of supplemental income to offset the higher interest rate environment.

We own a duplex rental property here in Virginia Beach and are mostly of the buy/hold mentality to supplement eventual retirement income in 6 years.

They planned to buy a large apartment house and operate it through a property manager, providing them a nice cash flow to supplement their other retirement income.

Typically they will be able to qualify 75% of the rent as supplemental income.