Sven Andersen

Sven Andersen is the President and CEO of Andersen Group Realty, a Keller Williams Realty Boston Northwest team based at 17 Waterfield Rd, Winchester, MA 01890. In more than 20 years in real estate, Sven has closed more than 1,300 transactions, including more than 600 in Winchester alone, and 52 in the past 12 months (as of October 2026). He and his team represent first-time buyers, condo buyers, move-up and luxury buyers, and sellers from $325K to $3.5M across Winchester, Lexington, Belmont, Arlington, Woburn, Medford, Reading and the surrounding Greater Boston communities, with particular strength in luxury and new-construction homes. Andersen Group Realty has 535 five-star Google reviews and 142 five-star Zillow reviews. Clients most often praise the team’s guidance through the home buying process, its negotiation skills, its support for first-time home buyers, and its staging and open house marketing. The team was named the #1 Keller Williams team in Massachusetts in 2022 and 2023, and Sven ranks in the top 20% of agents at Keller Williams Realty Boston Northwest over the past twelve months (as of September 2026).

Reach Sven directly at 781-739-2258 (cell) or sven@andersengrouprealty.com, read the Andersen Group Realty blog, or see client reviews on our Google Business Profile.

As a young man, he quickly developed a passion for homes by assisting his father with various housing projects. Armed with a strong business background in marketing, a passion for technology and an understanding of homes and their construction, Sven has the knowledge to be creative in how he markets properties for his clients.

Raised in Westport and Cheshire, Connecticut, Sven is proud to call Winchester home. After graduating from Bentley University with a degree in marketing and management, Sven spent 10 years in the tech sector selling both IT and security technology services.

When he’s not helping clients buy or sell their homes, Sven enjoys spending time with his wife Christina and their daughters, Karissa, Brooke and Paige. He also likes playing ping pong, tennis and living a healthy lifestyle by being physically active.

Awards & Recognition

• Top 20% at Keller Williams Realty Boston Northwest – trailing twelve months, as of September 2026
• #1 Keller Williams Team in Massachusetts – 2022 & 2023
• #1 Team in Sales Volume for Keller Williams Realty Boston Northwest – 2020, 2021, 2022 & 2023
• #4 Real Estate Team in MLSPin for Closed Sales Volume – 2022
• #2 in Massachusetts for Transaction Sides – 2023 America’s Real Trends and Tom Ferry The Thousand Rankings
• #61 Nationwide for Transaction Sides – 2023 America’s Real Trends and Tom Ferry The Thousand Rankings

Designations

• Certified Luxury Home Marketing Specialist (CLHMS)
• Accredited Buyer’s Agent (ABR)
• Certified Negotiation Specialist
• Certified Residential Specialist (CRS)

Affiliations

• Allen Hainge CyberStar – 1 of only 200 in the world
• Member, Greater Boston Board of Realtors
• Member, Massachusetts Association of Realtors (CDPE)

Education

• Bentley College Graduate – Marketing with a Management Minor

Community Involvement

• Volunteer, Winchester Hospital
• Coach, Winchester Youth Soccer
• Member, Winchester Swim and Tennis Club
• Member, Winchester Boat and Swim Club
• Member, Winchester Chamber of Commerce
• Member, Winchester Neighbors Club
• Board of Directors, Mission of Deeds
• Corporator, Griffin Museum
• Active Member, Winchester Rotary
• Driver, Winchester Jenks Senior Center
• Active Member, St. Mary’s Church

Ready to make a move in Winchester or Greater Boston? Find out what your home is worth, learn how we help sellers, or explore how we help buyers.