For anyone that wants more details this is a decent overview from NPR news: https://www.npr.org/sections/alltechconsidered/2014/10/16/356693782/your-car-wont-start-did-you-make-the-loan-payment

I would need more details about how much savings you have, but usually I tell folks to keep their savings...

Fannie will give you the best rates and terms on 1-4  units) If its more than 4 units, then more details come into play?

Let me know if you'd like to discuss in detail. 

I am lucky enough that my wife is involved as well, I get to hear all the details and the ongoing city plans, discussions, and new businesses and investors coming into town.

I suspect there are more details here that are missing.. the joy of trying to help on BP you only get 80% of the actual facts  LOL

Marvin There are so many things to consider, the way I will go about it will be by acquiring a debt weapon, home equity line of credit maybe for 20,000 and use that to pay down your principal there are some good youtube videos that will explain how to pay down your mortgage faster and save thousands of dollars in interest, but you need to have at least $500 of cash flow each month for that to work or use that to pay of a car payment faster anything that will increase your debt to income ratio so you can start saving more money each month cut down your monthly bills pay off all credit cards anyway you can i will try to get out of any car payments sell the cars buy a use one before selling the house, rent a room is a big house. obviously like i said lots of things to think about do you have kids so maybe a roommate wont work and your finances with out looking at them is hard to plan but I will try to make that house the investment get created if you have good credit that’s exactly how i started i hustle pay down my principal using the HELOC technique and when my equity become more because of lowering the principal I call my lender and increase my HELOC amount to the point that i was able to buy a house cash using the HELOC my HELOC became my checking account and i was paycheck parking all my income in the heloc is hard to explain what i did in a text but i hope this help you in getting created and into looking at more information before you sell or selling is the best way to go about it.

The only way to really be accurate is a detailed engineered cost segregation study. 

The Mortgage Broker will have the details for the city you will be buying in.

I can explain in greater detail if you explain your situation to me.