No. 1 Affiliated Sales Associate and Teams with Coldwell Banker Realty in Houston

Written by Posted On Friday, 19 March 2021 14:06

Coldwell Banker Realty in Texas is pleased to announce the recognition of the following top-producing, affiliated individual agent, small team and large team based on gross commission income (GCI) for 2020:

  • No. 1 Individual Sales Associate in Houston: Karen Sumner, Cy-Fair Office
  • No. 1 Small Team in Houston: Wendy + Zonia Real Estate Group, Lake Conroe/Willis Office
  • No. 1 Large Team in Houston and one of Coldwell Banker’s Top 10 Large Teams nationwide: The Jamie McMartin Group, Katy Office

“This past year was both challenging and full of opportunity for real estate professionals, and these talented agents have set a new standard of excellence in what can be accomplished with dedication, resilience and expertise,” said Charles El-Moussa, president of Coldwell Banker Realty in Texas. “I’m thankful to have Karen, Wendy, Zonia, Jamie and her team as part of our Coldwell Banker network.”

Karen Sumner specializes in buyer and seller services and relocations. She is a consistent recipient of the International President’s Premier Award and the International Circle of Excellence Award, and is a three-time, award winner of Business Journal’s Top Producing Agent Award. Sumner has also been recognized by Real Trends as one of Houston’s Top Producing Agents.

Wendy Welsh and Zonia Alvarez lead the Wendy + Zonia Real Estate Group – formerly the Mariner Squared Team. They provide real estate services throughout Harris and Montgomery counties. As a broker for 22 years, Welsh brings in-depth real estate knowledge and leadership to the industry. She is a Global Luxury Specialist and a Certified Luxury Home Marketing Specialist (CLHMS). Alvarez, who is bilingual, has a professional background in photography and is an Accredited Luxury Home Specialist (ALHS). Both professionals hold designations as Accredited Buyer Representative (ABR) and Graduate, REALTOR Institute (GRI).

The Jamie McMartin Group is led by Jamie McMartin, a local leading Broker with numerous designations, including Global Luxury Specialist, USAA Preferred Relocation Agent and Navy Federal Preferred Agent. The team has also ranked as one of the Top 10 large teams by units, out of 96,000 affiliate agents with the Coldwell Banker network. The Jamie McMartin Group has over 40 years of combined real estate experience and proudly serves the Katy and West Houston communities. The team consistently ranks as the brokerage’s top producing large team in the region and among the nation’s Top 1000 agents and teams list by REAL Trends.

About Coldwell Banker Realty

Coldwell Banker Realty in Houston is a leading residential real estate brokerage company with approximately 15 offices and 1,100 affiliated sales associates. Coldwell Banker Realty is owned by a subsidiary of Realogy Holdings Corp. (NYSE: RLGY), the largest full-service residential real estate services company in the United States. Visit

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