Real estate sources tell us Gavin's the one who wanted the Beverly Hills house back in 2007, but Gwen never really liked it that much. The house is modern and Gwen really likes Spanish.
We're told Gwen wants to sell the house on the down-low ... it's a pocket listing where her realtor has put the word out she's looking for a buyer.
It's an impressive pad ... 9,000 square feet, 6 bedrooms and 9 baths and the requisite large pool.
As for the price ... they bought the home for $13.25 million back in 2007 ... during the height of the housing crisis. Prices have swelled so there should be millions in profits. Sources tell TMZ, the house is community property and they will split profits.