@Jose Guevarra  big buyer would have their bank on speed dial and get letter in 15 minutes.. just check public records and see if their company owns multiple properties or none.. that will give you your answer

There are no other houses for sale in our neighborhood right now and our next door neighbor got multiple offers on his house and sole for top dollar about four months ago so the area is well sought after.

But I think the larger point is if someone has multiple properties they may be able to use a PM for just one and then use the same company for maintenance only. 

My idea is to capitalize on the BRRR method to buy multiple homes without investing more money.Is it possible to buy a home in a decent market (either a foreclosure or short sale or something) that has an after repair value of $100,000 for $50,000 before repairs?

They expect me to put money in it and resell to use towards multiple smaller deals. 

We've done multiple 12-15 month deployments during his career and part of the reason we are moving now is because, even stateside, he's never home.

(good infrastructure, multiple job sources, good schools, etc.)

Residence house: Sell to a builder or investor (we get multiple letters a month looking for property in our area), or tear down then build spec home as investors, or keep it as a rental and either sell while we could still qualify for the tax credit or wait and 1031 exchange it down the road. 

I have sold and purchased homes with multiple heirs.  

I can provide multiple photos, too.