I was all intrigued by "Dead to Goldenglow Estate."
But I'm also intrigued by whether or not owning the deed is significant.
It's not as much a reward as the Goldenglow Bill of Sale isn't removed from your inventory. Nothing changes about Goldenglow Estate, all the items will remain unowned so you can take them freely and the mercenaries will remain hostile.
It looks like at one point, you could sell the deed to Maven, but there's no clear indication of the reward.