This has been a controversial deal and the IRS has reviewed it to determine if it was an abusive tax shelter. 

There is a lot of controversy over what constitutes a business but a "house-hack" in my opinion would clearly not qualify.

I'm witnessing it.Hope that brings a fresh perspective without too much controversy.

My wife enjoys decorating the house for the seasons.She listens to me talk about commercial real estate investments and development and is interested but likes doing her own stuff.There are teams out there that both love real estate and other partners who find joy and currency in many other different things.I celebrate the differences as it is another unique angle in life to experience and enjoy.The big question is if your girlfriend is okay with having 3 tenants living next door to her?

Congratulations, there is much to celebrate!

As you move up, step up your lifestyle to celebrate success but always stay one or two levels below what your wealth would allow.

To them, it is exactly the same business model and is taxed exactly the same way.There is some controversy out there as to occasionally flipping and whether it rises to a business. 

But no time to celebrate I must push even harder now for that next call back.

without the QI and proper documentation in place you can't do a 1031 this time around.So pay a little tax, Celebrate being smarter than Hollywood. 

Celebrities do it, and even use it in their stand-up material (Gallagher - "The Bookkeeper", for example).