Our Real Estate Agents

Mary Skoby Cowan and Suzanne Zellers Beck, two of Concord NH’s top real estate producers, are the founders of Cowan and Zellers Real Estate, LLC. They are pleased to have a highly respected and successful team of experienced broker associates and office administrator. Mary and Suzanne, along with agents Calvin Herst, Sandy Heino, Molly Hardenbergh, Dani Sturdee Tarbell, Rolf Gesen, and John Langill work together as a team. All of us live locally, have extensive experience with the greater Concord NH communities, and are committed to providing knowledgeable and courteous service to everyone.

Mary Skoby Cowan

Mary Skoby Cowan began her real estate career at Dunning Real Estate Services in 1985, specializing in new home construction. She was a founding owner and president of ConCorp Realty Services, Inc. in

Calvin Herst

Calvin Herst

Owner

Calvin Herst joined the Cowan and Zellers team in 2013 and became a co-owner/partner with Mary Cowan in 2018. Widely recognized for his ability to build and maintain relationships, he brings thirty ye

Suzanne Zellers Beck

Suzanne Zellers Beck began her real estate career in 1987 with the Concord Norwood Realty office. In 1991, she joined ConCorp Realty Services, Inc. in Concord NH as an owner and officer. Prior to her

Sandy Heino

Sandy Heino

    

Sandy grew up in Hopkinton and has lived in Weare with her husband David for over 45 years. Sandy is a graduate of New England College and owned Sandy Heino & Associates Real Estate in Hopkinton Villa

Molly Hardenbergh

Molly joined the Cowan and Zellers team in 2017. She and her family have lived in New Hampshire since 2000. Molly has a BS degree in Systems Engineering from the University of Virginia and was employe

Rolf Gesen

Rolf Gesen

    

Rolf Gesen joined the Cowan and Zellers team in 2018. Rolf’s family has been in Concord for 8+ generations and he is a currently the 4th generation resident of the family farm in Concord.

John Langill

John Langill

    

John Langill became a member of the National Association of Realtors in 1986. He obtained his New Hampshire brokers license in 1987. In September of 1987 John founded Real Estate Stop North, a Concord

Karen Swanson

Karen Swanson

Office Manager

Karen is the Office Manager at Cowan and Zellers. She is a graduate of Southwest Missouri State University. After teaching office skills to adults for 21 years at Second Start in Concord, she joined t