For me its a great blend between wholesaling and landlording.

You are asking for future mold and water issues and even if you where to frame in the windows you are going to need to re-insulate, blend the siding back in, paint, caulk etc. etc.

They probably got there by spending far less they they earned and using this fuel to invest in projects that make as much or more than the market does with a 50/50 blend of stocks to bonds.  

I usually get polished black granite, which contrast nicely with the lighter maple, and also blends in with the stainless appliances.

In addition to my direct experience in RE sales, I have a strong analytical/financial mindset build upon by years of trading in the financial markets (still active), I have a growing web/technical skill set ("nathanielrand.me" or "43sanibel.estate" to provide examples), and a strong blend of creative problem solving established through years of hard knocks.

This way you develop a relationship with 1 individual who spends the time quoting and blending all the coverage's into 1 cohesive program. 

I prefer to believe it is the simple truth of sowing and reaping.What's more, unless it's directly related to a crop you are sowing (like a direct mail campaign), I believe that sowing wildly, lavishly even, without thought or regard to reaping is akin to applying just the right blend of fertilizer and water.  

Now loan servicing laws, tax reporting kick in to cause you problems.If you want to sell with an assumption of an underlying loan, with consent, make a second mortgage at a higher rate, don't try to "blend" different rates, amounts and amortizations. :)

Will, Your question doesn't make a ton of sense, as it appears you're blending together concepts related to wholesaling, buying & flipping, and buying & holding for rental purposes.So, to start, clarify a bit what your goals are; Are you looking to identify properties to wholesale? 

The leases, financing, rent increases, blended cap rate over the primary term of the lease, and exit strategies have to be thought out well in advance before purchasing.The exit strategy and targeted buyer would vary based on what purchase price you are talking about.If as a direct investor you are talking multi-million properties putting 25% down then you can land quality corporate backed leases.