The exception here is that if your business partner is related to you by blood (as long as they are not selling you the house as well)

She has had a tough winter, I know because I have heard stories during inspection, etc. and I have seen the proof of 16 stitches on her head from falling due to high blood pressure. 

There is an exception for blood relatives.

@Brian KelleyHeres a reminder that ought to lower your blood pressure: If you lived there for 2 out of the last five years, you can exclude the first $250K of gain if you are single, or $500K of gain if you are married.

I live in Naples, FL but this area is too rich for my blood.

I live in Naples, FL but this area is too rich for my blood.

Too rich for my blood.  

One is he would like to retire for the right price but will not give up his blood,sweat, and tears equity he perceives he has earned over the years.

We poured our blood, sweat and tears into that house fixing it up for 2 months and ended up selling it for a $120K profit (and avoided capital gains because I got a job in another state) Needless to say, I got hooked on real estate.

She then took part of that money and used to to fund a mortgage for my sister (warning: were there any blood relation or official adoption this would be a prohibited transaction.)