Just determination, focus, and a lot of work.Also, and I don't toot my own horn very often, but I feel there are some REALLY good nuggets of info in this thread: I quit my CPA Job to Buy Large Apartment BuildingsFinally I had the privilege of doing a BP Podcast that will air on August 13, 2015 so keep an eye out for the link and I hope you will be able to listen in and learn a thing or too.

The Lease needs to be clear in its definition of what you are trying to accomplish here which is that the Tenant pays for all of the operating and maintenance expenses of the property.In addition be sure to include an understanding of who pays for major capital replacements (not just maintenance) such as replacement of the heating and air-conditioning units, water and sewer lines, electrical mains, roofs, glass, etc.

Hire a certified industrial hygienist to perform an air quality test (recommend this over a test kit you can buy at a store since those typically do not hold up in court.

I think central heat/air could go out of style if ductless heat pumps become cheaper and easier to install or if window/portable heat pumps become cheaper, more compact/sleek, or more efficient.

IE what they buy today they plan on building on in 10 years..In Oregon it used to be we could buy a 20 acre site.. get it approved for 120 lots in 90 days build it out and have sticks in the air in 9 to 10 months.the gresham project that I have posted about ( with your help )  its taken right at 20 months to go from contract to sticks in the air.. we broke ground last week on the first 6 homes.  

I am retired Air Force, married to a beautiful wife, and all the children are out of the nest.

About Me: I'm in the Air Force and have been investing in real estate and working full-time for the past 4 years.  

I am tired of buying window air units.

Maybe explore tenants moving out and creating a business model for Air BNB with the two rooms?  

I need a home to Air BNB though and make my primary residence in Yuma.