You would want to hold for 2 years though so you can take advantage of the primary residence exclusion if possible to avoid paying all those taxes. 

Under IRC §121(b)(2)(B), if you alone meet the ownership and use requirements for your primary residence at the time of sale then you'll be entitled to an exclusion of $250,000 gain. 2.

She can sell her house and take advantage of the section 121 tax free gain exclusion on the sale of a primary residence. 

That said, I have investor clients who exclusively rent to people on sec. 8 because they are vetted and the money comes directly from the government.

-Exclusive right to list the home upon completion of repairs (they would still sign a listing agreement) for 2 years.

If its a primary residence and you've lived there for a few years, you may qualify for an exclusion - talk with a tax professional about this.If its an investment property you're looking to sell then yes you would need to consider finding a property of equal or greater value and consider the 1031 exchange.

In my experience properties that far above the average are almost the exclusive domain of just a couple of realtors in the area who work corporate executive relocations.

How does exclusivity work?

Bonus points if you use an agent that works mostly or exclusively with real estate investors as that agent is going to have a better understanding of your needs for your insurance.Property Insurance pricing is cyclical. 

I don't plan on signing any exclusive contract.