@Eric Lam you can sell a primary with capital gains exclusion within 2 years, but you won’t be eligible for the full exclusion.

Simply tell them that the set on the left (or right where ever the old set is) is for them to use exclusively and the other set is only for you to use.

@Chuck Masters, I use Foremost for coverage of my VR's with a $1M premises liability and there are no exclusions because of STR status. 

I primarily invest in BRRRR exclusively and just completed a three unit on Granada.

I can own a property, have a mortgage on the property and still sign a lease to rent the place to a tenant.The transactions are not mutually exclusive.

I require holding monies to lock up a unit exclusively. 

I'm a real estate agent that works exclusively with investors.

Generally yes if you meet several requirements such as, your rental activities qualify as a business, you use your home office exclusively for your rental business, you use your home office on a regular basis, plus a few other requirements.

Here are some potential strategies:Primary Residence Exclusion (Section 121): If your dad has owned and lived in the home as his primary residence for at least two of the last five years, he may qualify for the Primary Residence Exclusion.

The exclusion only allows you to claim it once every 2 years.