Dean Sumer

Dean Sumer is a real estate agent with Greenbox Realty in Malibu. MLS records credit Dean with 4 transactions over the last 12 months, worth $2.2 million in total sales volume. Across both sides of the deal, that is an average of $555,306 per transaction.

All of Dean's MLS activity in this period is on the selling side, representing buyers: 4 buyer-side transactions for $2.2 million, or $555,306 on average.

By sales volume, Dean ranks 74th of the 115 agents in Malibu with recorded sales, ahead of 36 percent of them. The typical agent there closed 2 transactions worth $3.3 million.

Statewide, Dean is 51837th by volume among 115,589 California agents with recorded sales.

In ZIP code 90265, the address on Dean's MLS record, the median sold price was $4,260,000 across 18 sales between June 2026 and July 2026. Dean's average transaction of $555,306 is below that median, so much of the work is in the more affordable part of the market.

Dean is listed with Greenbox Realty, Malibu. No other agent shares that office record in our data.

These other Malibu agents also have recorded sales in the last 12 months. They are ranked by sales volume. Compare a few before you pick someone to interview.

• Christopher Cortazzo30 transactions · 477.7M volume
• Eric Haskell10 transactions · 92.1M volume
• Shen Schulz12.5 transactions · 53.2M volume
• Dittany Zhang Seltzer11.5 transactions · 39.9M volume
• Cody Garcia11 transactions · 39M volume
• Brian Goldberg6 transactions · 27M volume

The numbers on this page come from public MLS and license records, last updated May 2026. Transaction counts and dollar volumes cover the last 12 months and are credited to the agent named on each record. Dean has not claimed this profile, and a listing here does not mean Dean or Greenbox Realty endorses or is affiliated with Expert Agents Near Me. We collect no reviews, so there are no ratings from us on this page.