I need a new roof on my latest flip, NEW GC said he wants the full $6100 down because its not my primary residence.

Hi there, I just closed a week ago on a primary residence that is my first home purchase. 

Used a completely different agent for sale and purchase of a primary residence.

-NB Hi Nick,It's commonly overlayed, but there is no longer a Fannie requirement that you have X% equity in the departing primary residence. 

After that you either you and your wife or would be wife can use rest of cash to buy own primary residence or do another house hack. 3) Married with children:  Buy your own primary residence, small, easily maintained property with low down payment and use as much first-time homebuyers programs out there to reduce use of personal cash.

It was our former residence and the market had gone down at the time we were moving so we decided to rent it.

That’s what I did with my primary residence.

I own a primary residence in rural Connecticut as well as an investment property in Raleigh (my spouse owned before we met).  

@Josh Wallace then you'd split the limit between the personal residence side and the rental side.Example: I buy a duplex for $600k and take a $500k note.

You can also buy a duplex in a place you want to visit so airfare and hotel can be tax deductible against your profits.To answer your question, the IRS deduction on capital gains is only valid for your primary residence not a vacation home.