I pulled the evidence tape off the door took a deep breath and walked in. 

@Jordan Moorhead Jordan, I would need a storm door and flooring.

You can also door knock, direct mailers, etc.Many whole sellers that claim to have deals fluff the numbers to make it sound better than it truly is.

A single family home with just 1 front door is very risky. 

I would then cash out the equity to move into flipping properties to increase the amount of hard cash I have on hand which I can then re-invest into more doors.

I know most folks are looking to retire early through passive income, and I wouldn't mind doing that (slowly), but I don't mind my current job.I currently have a property with two doors (renting at 1,850 and 850), and may be adding a duplex where I house hack one side. 

When you get folks from certain cultures you area always dealing with this... think about the posts  Help my house smells like Curry how do I get that out ..or some folks just cant seem to hit the drive way and want to park on the law right in front of the front door.. 

Utilize open houses and door knock regularly.

I was wondering, does door knocking really work and is there some type of company that sales names and numbers of home owners for me to cold call?

The thermostats are through inthrma.com and if there is a door or window open, it shuts off the A/C.