If you’re buying or selling a home in Westchester County, NY, or the surrounding areas—including Rockland, Putnam, Dutchess, Orange counties, and Fairfield County, CT—you’ve likely heard of Mark Seiden, the Broker and Founder of the Mark Seiden Real Estate Team.
Decades of Experience Helping Buyers and Sellers
Mark Seiden is a true pioneer in real estate, with decades of experience helping buyers and sellers navigate the Southern New York and Connecticut markets. Since starting his career in 1993, Mark has transformed how homes are marketed, sold, and purchased.
A Pioneer in Real Estate Marketing
Innovative Strategies in the 1990s
In the 1990s, Mark introduced groundbreaking strategies for Westchester County real estate:
- First Realtor® in the area to put his photo on a business card
- Added contact information to “for sale” signs for faster buyer inquiries
- Used virtual tours online to showcase homes
- Printed full-color postcards to attract buyers, despite the high cost
Digital Marketing Vision in the Early 2000s
By the early 2000s, Mark recognized the shift from print to digital. While traditional brokerages relied on newspapers, he pivoted to online advertising, putting listings where buyers were actually searching. Within a few years, every major brokerage in the region had adopted similar strategies, thanks to Mark’s foresight.
Education and Career Highlights
Academic Background
- Cornell University graduate
- Post-graduate credentials from the University of California–Berkeley
Career Milestones and Awards
- Began career at Lois Seiden Real Estate; top agent each year until 1997
- #1 Agent in all of Westchester County at Coldwell Banker Residential Brokerage for five consecutive years (1997–2002)
- Founded Mark J. Seiden Real Estate, Inc. in 2003; rebranded to Mark Seiden Real Estate Team in 2008
- Since 2004, consistently ranked among the Top 3 Agents for selling single-family homes in Westchester and Putnam Counties (over 13,000 agents), achieving #1 in 2008, 2014, and 2015
Track Record of Success
Transactions and Sales Volume
Mark has closed over 2,600 transactions, totaling more than $1.4 billion in real estate sales.
Delivering Value for Buyers and Sellers
- Sellers: Net higher proceeds from home sales
- Buyers: Spend less and secure the homes they want
Even while keeping more money in clients’ pockets, Mark’s average commission rate is higher, producing at least 20% more per transaction than competitors.
Media Recognition
Mark’s work has been featured in:
- The New York Times
- New York Post
- Real Estate In-Depth
- Westchester Magazine
Mentorship and Coaching
Workman Success Systems
Mark was recruited in 2016 by Verl Workman of Workman Success Systems, recognized by Inman as one of the top 25 coaches. He now coaches other Realtors, sharing strategies and insights to help others succeed.
Recognition by Westchester Magazine
In 2023, Westchester Magazine recognized him twice:
- Selected as one of Westchester’s Top Real Estate Agents
- His office voted Best Real Estate Office
Beyond Real Estate
Personal Interests and Hobbies
When he’s not helping clients, Mark enjoys:
- Cooking
- Playing tennis
- Traveling the world
- Spending time with family
Why Work With Mark Seiden?
Expertise and Strategic Guidance
Clients in Westchester County and Southern New York choose Mark because he delivers results, not just promises.
Negotiation and Marketing Skills
- Expert guidance on market pricing and property positioning
- Negotiation strategies that maximize proceeds for sellers and minimize costs for buyers
- Innovative marketing and digital advertising to reach the right buyers
Results That Matter
Whether you’re buying your first home or selling a high-value property, Mark Seiden’s decades of local expertise demonstrate the impact of experience, skill, and creativity in real estate.