But I also want to get to the point where I'm not dependent on it as a primary income source.

Are income sources like capital gains excluded from qualifying for a mortgage?

I own my own business but there is just something intriguing about buying, renting, flipping homes as an additional source of income.

The only downside to condos is that you have to pay HOA dues even if your condo isn't rented, so it goes from an income source to an expense really quickly.

He said he has buyers interested in land to build a 200-300 unit apartment complex if I can source it.

Thanks for sharing.If some one does 1 flip / year outside of other sources as secondary revenue stream / side gig, then it is OK.$30,000/year is less than average househould income in USA. 

A lot of forum members are experts in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, buy and hold investing, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.There are some pretty nice discounts on many products and services offered as Perks to BP members that you might want to check out: https://www.biggerpockets.com/perks/proIf you haven’t been to it already, the Bigger Pockets blog features links to their fantastic podcast and many great articles: https://www.biggerpockets.com/renewsblog/The site has quite a few tools that can be helpful for new members.

When going on List Source, REI Pro,etc.

@Jason Behrens How big in terms of square footage and bedrooms are the units you want to convert to electric heat and can your current electrical system in the home handle the added load of electric as the heat source.

I like sourcing items from auctions, thrift stores, and up-cycling so take that into consideration.