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Mark Seiden

Mark Seiden
Real Estate Agent (Corporate Broker)
Briarcliff Manor NY

Corporate Broker (NY: 10311200147)

33 years experience

REALTOR® 12 Active Listings Serves Westchester County, NY
View on Realtor.com

Contact Information

Brokerage
Mark Seiden Real Estate Team

Office Website
Office Address
445 N State Rd
Briarcliff Manor, NY  10510
(Westchester County)
Office Phone
914-762-2200
Office Fax
914-762-5626
Mobile
914-762-2200
Email
msei***@*******.net
Show Email for $5

Service Areas

North Castle: NY Armonk: NY New Castle: NY Briarcliff: NY Mount Pleasant: NY Briarcliff Manor: NY Chappaqua: NY Yorktown: NY Clarkstown: NY Croton-on-Hudson: NY Montrose: NY Ossining: NY Cortlandt: NY Crugers: NY Maryknoll: NY Cortlandt Manor: NY Peekskill: NY Crompond: NY Thornwood: NY Pleasantville: NY

About Mark Seiden

Mark Seiden exemplifies professionalism through his unwavering commitment to exceeding client expectations. Renowned as one of Westchester County's most dedicated real estate professionals, he has built a reputation for determination and excellence.

**Innovative Marketing Strategies**
Understanding that selling a home represents one of the most significant financial decisions a family can make, Mark has dedicated over a decade to refining and implementing effective marketing strategies. His approach encompasses a state-of-the-art website, comprehensive advertising campaigns, and a skilled team of assistants, all designed to facilitate a seamless home-selling experience. Mark’s resources ensure that his clients’ properties sell quickly and at optimal prices.

**Comprehensive Real Estate Resource**
Mark invites potential buyers and sellers to explore his advanced website, which offers a wealth of tools and resources. Whether navigating the complexities of distressed properties or seeking valuable insights on real estate, visitors can access Mark’s philosophy on service, set up email alerts for available listings, and request informative reports that can lead to significant savings. For those ready to buy or sell, the process begins with just a click.

**Your Trusted Expert**
Before making a decision to sell, consider consulting with a true expert. Mark Seiden is dedicated to transforming goals into reality in Westchester County, serving as an invaluable resource for maximizing real estate opportunities in this vibrant community. Reach out to him today to begin your journey.

Westchester County, NY Real Estate Market Analysis (Single Family Homes)

$1,823,136
Avg. Listing Price
From Mark's portfolio
4.0 / 3.5
Avg. Beds/Baths
Typical property size
3,293 sf
Avg. Square Footage
Interior living space
867
Active Listings
Current inventory

Westchester County, New York represents one of the most sophisticated and diverse real estate markets in the tri-state area, characterized by its unique blend of suburban tranquility and urban accessibility. With 6,658 total actively licensed agents serving the region, this market demonstrates remarkable depth and professional expertise that reflects the county's status as a premier destination for homebuyers seeking luxury, convenience, and top-tier educational opportunities just north of Manhattan.

The sheer concentration of real estate professionals in Westchester County—all 6,658 agents maintaining active email communication—underscores the market's competitive nature and the high level of service expectations from discerning clientele. This robust agent network spans from the Hudson River waterfront communities to the Connecticut border, creating a comprehensive coverage area that serves diverse price points and lifestyle preferences.

Major Westchester County, New York Real Estate Markets

The county's real estate landscape is anchored by several distinct metropolitan areas, each offering unique characteristics and market dynamics. White Plains serves as the commercial and residential hub, featuring high-rise condominiums and renovated downtown lofts that attract young professionals and empty nesters. Meanwhile, Scarsdale, Bronxville, and Larchmont command premium prices for their prestigious school districts and charming village atmospheres, often seeing bidding wars for well-appointed colonial and Tudor homes.

The Hudson River communities of Tarrytown, Irvington, and Dobbs Ferry have experienced remarkable renaissance in recent years, with waterfront properties and historic homes drawing Manhattan expatriates seeking more space without sacrificing their reverse commute convenience. Northern Westchester areas like Bedford, Pound Ridge, and North Salem offer estate-style properties and equestrian facilities, creating distinct luxury market segments that require specialized knowledge and connections.

Market Dynamics and Geographic Complexity

Westchester County's real estate market operates with surprising micro-local variations, where neighboring towns can demonstrate vastly different pricing trends and inventory levels within the same quarter. The Metro-North railroad lines create distinct corridors of demand, with properties within walking distance of stations in communities like Rye, Mamaroneck, and Mount Vernon commanding significant premiums over comparable homes requiring car transportation to transit options.

Seasonal patterns in Westchester follow unique rhythms driven by the academic calendar, as families with school-age children typically prefer spring and early summer transactions to align with educational transitions. This creates intense competition during peak months, followed by surprising opportunities in fall and winter markets when motivated sellers often accept more favorable terms from prepared buyers.

Why Businesses Need Westchester County, New York Agent Contact Data

Service providers targeting Westchester County's real estate market require comprehensive agent contact information to effectively reach this affluent and active customer base. Mortgage lenders, home inspection services, luxury contractors, and interior designers can leverage direct communication with all 6,658 licensed agents to build referral networks that generate consistent high-value transactions throughout the county's diverse communities.

The ability to segment outreach efforts by geographic specialization and price point expertise allows businesses to craft targeted messaging that resonates with agents serving specific market niches, from first-time homebuyer specialists in Yonkers to luxury estate experts in Greenwich border communities, maximizing conversion rates and building lasting professional relationships.

Current Property Listings

As of 2/13/2026, Mark Seiden has 12 properties for sale in Briarcliff Manor and surrounding areas. These are the top 10 listings.

$724,222

Listed 2026-02-05

233-235 Haviland Dr
Patterson, NY  12563

Beds: 5.0
Baths: 3.0
Sq Ft:
Lot: 11,326 sf
Multi Family Map
View Full Details

$784,222

Listed 2025-10-14

527 Union Ave
Peekskill, NY  10566

Beds: 4.0
Baths: 1.5
Sq Ft: 2,500
Lot: 7,405 sf
Single Family Map
View Full Details

$349,222

Listed 2025-10-25

42 Campwoods Grounds
Ossining, NY  10562

Beds: 2.0
Baths: 1.5
Sq Ft: 972
Single Family Map
View Full Details

$899,222

Listed 2025-04-21

1 Noel Dr
Ossining, NY  10562

Beds: 4.0
Baths: 2.5
Sq Ft: 3,551
Lot: 42,689 sf
Single Family Map
View Full Details

$899,999

Listed 2026-01-12

22 William St
Ossining, NY  10562

Beds: 7.0
Baths: 3.0
Sq Ft:
Multi Family Map
View Full Details

$649,222

Listed 2026-01-20

59 Watson Ave
Ossining, NY  10562

Beds: 3.0
Baths: 2.0
Sq Ft: 1,730
Lot: 10,454 sf
Single Family Map
View Full Details

$449,222

Listed 2026-01-12

104 Mallard Way
Peekskill, NY  10566

Beds: 2.0
Baths: 2.5
Sq Ft: 1,326
Lot: 6,098 sf
Condos Map
View Full Details

$354,222

Listed 2026-02-04

16 Rockledge Ave Apt 6K2
Ossining, NY  10562

Beds: 2.0
Baths: 2.0
Sq Ft: 1,580
Lot: 553,212 sf
Coop Map
View Full Details

$209,222

Listed 2026-01-15

100 E Hartsdale Ave Apt 7RE
Hartsdale, NY  10530

Beds: 1.0
Baths: 1.0
Sq Ft: 850
Coop Map
View Full Details

$724,222

Listed 2025-10-10

233-235 Haviland Dr
Patterson, NY  12563

Beds: 5.0
Baths: 3.0
Sq Ft: 2,972
Lot: 11,326 sf
Single Family Map
View Full Details

Current Property Rentals

As of 2/13/2026, Mark Seiden has the following rental properties available in Briarcliff Manor and surrounding areas. These are the top 10 listings.

$4,300

Listed 2025-12-13

233 Haviland Dr
Patterson, NY  12563

Beds: 3.0
Baths: 2.0
Sq Ft: 2,380
Lot: 11,326 sf
Single Family Map
View Full Details