Robertson is represented by Western Project in Culver City and has had national and international shows in locations including Seattle, New York, London, Stockholm and Munich. His paintings, called Mash-Ups, combine photography with images from the Internet.
Konstantine Valissarakos of Sotheby's International Realty, Los Feliz, has the listing.
Moguls cut a deal in Holmby Hills
Update: Internet pioneer David Bohnett has sold his Holmby Hills compound to art dealer Larry Gagosian for $15.5 million, according to public records.
The technology entrepreneur and philanthropist had put the restored Holmby Hills estate on the market in December at $18.9 million.
Designed by A. Quincy Jones in the mid-'50s for Academy Award-winning actor Gary Cooper, the wood, stone and glass house has a canopied walkway that leads to the entrance. The living room features a terrazzo floor, a raised stone fireplace and floor-to-ceiling windows that look out onto the swimming pool. The master bedroom suite has two bathrooms, a gym and walk-through closets. There are four bedrooms, 51/2 bathrooms and 5,721 square feet of living space.
The roughly 4-acre wooded site was accumulated by Bohnett through the purchase of adjacent properties including the site of singer Barbra Streisand's former mansion, which was razed. Paths and low rock walls traverse the grounds and gardens.
Bohnett, 54, co-founded GeoCities, a Web hosting service that was acquired by Yahoo in a $3.9-billion stock deal more than a decade ago. He is chief executive of OVGuide.com, an Internet directory and search engine, and is active in causes supporting AIDS research and the arts.
Gagosian, 65, owns the Gagosian Gallery chain, which has locations in the U.S. and Europe.
The listing agent was Linda May of Coldwell Banker, Beverly Hills. The name of the agent representing Gagosian was not available because the property was withdrawn from the MLS before the sale closed.