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Rainer Jessen

Rainer Jessen
Real Estate Agent (Salesperson)
Mount Sinai NY

Salesperson (NY: 40JE0877930)

30 years experience

REALTOR® 7 Active Listings Serves Suffolk County, NY
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Contact Information

Brokerage
Coldwell Banker American Homes
Office Address
276 Rte 25a
Mount Sinai, NY  11766
(Suffolk County)
Office Phone
631-331-3700
Office Fax
631-331-9601
Mobile
631-786-4992
Email
rain*********@*****.com
Show Email for $5

Service Areas

Miller Place: NY Mount Sinai: NY Coram: NY Selden: NY Port Jefferson Station: NY Terryville: NY Setauket-East Setauket: NY Belle Terre: NY Port Jefferson: NY Nesconset: NY Lake Ronkonkoma: NY East Shoreham: NY Shoreham: NY Rocky Point: NY Ridge: NY

About Rainer Jessen

Rainer Jessen brings nearly two decades of expertise in the Suffolk County real estate market, having initiated his career with a keen interest in investment properties. This early fascination quickly evolved into a dedicated passion for real estate, leading him to specialize in a diverse range of services, including residential listings, condominiums, land sales, new construction, commercial transactions, and rental properties. His extensive knowledge covers both the North and South Shores of Suffolk County, and throughout his 19-year career, he has successfully completed over 1,000 transactions.

What distinguishes Rainer in the competitive real estate landscape is his unwavering honesty and strong work ethic. His dedication has fostered a robust referral network and a loyal clientele who repeatedly choose him for their real estate needs. Rainer is adept at navigating challenges that may arise during transactions, such as permit issues and missing certificates of occupancy, and he excels in negotiation, ensuring favorable outcomes for his clients.

A lifelong resident of Port Jefferson Station, Rainer currently resides in Miller Place with his wife and four children. His entrepreneurial spirit was evident during his 16 years of ownership at the Ridge Deli, where he cultivated valuable community connections that laid the groundwork for his real estate career. Together with his wife, he established and successfully operated real estate firms in Coram and Ridge for over a decade before merging with Century 21 and later aligning with Coldwell Banker Residential Brokerage in Mount Sinai.

Rainer takes pride in being part of Coldwell Banker, a brokerage renowned for its exceptional reputation. His accomplishments include multiple Top Producer awards from Century 21 and various recognitions from Coldwell Banker, underscoring his commitment to excellence in the field.

In addition to his professional pursuits, Rainer is actively involved in his community as the Vice President of the Homeowners Association in Strathmore Ridge. His engagement is driven by a desire to enhance the community and increase property values, with the board making significant progress toward financial stability and fostering a family-friendly environment.

Rainer Jessen is dedicated to providing specialized real estate services tailored to meet the needs of his clients. For those looking to buy or sell, he invites you to reach out at 631-786-4992.

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

$2,171,890
Avg. Listing Price
From Rainer's portfolio
4.0 / 3.1
Avg. Beds/Baths
Typical property size
5,446 sf
Avg. Square Footage
Interior living space
4472
Active Listings
Current inventory

Suffolk County's real estate market represents one of New York's most dynamic and diverse property landscapes, stretching across Long Island's eastern expanse from bustling suburban communities to exclusive waterfront estates. With 9,107 total actively licensed agents serving the region, this market demonstrates remarkable depth and professional expertise, reflecting the county's complex mix of residential neighborhoods, commercial districts, and luxury coastal properties that attract buyers from across the metropolitan area.

The sheer scale of professional representation in Suffolk County reveals a market that operates at institutional levels, where every one of the 9,107 agents maintains email connectivity, enabling rapid communication and deal coordination across multiple price points and property types. This extensive network of licensed professionals supports everything from first-time homebuyer transactions in communities like Brentwood and Central Islip to multi-million dollar estate sales in the Hamptons, creating a sophisticated ecosystem that responds quickly to market shifts and seasonal demand patterns.

Major Suffolk County, New York Real Estate Markets

The county's real estate activity concentrates heavily around several key metropolitan areas, with Huntington, Babylon, and Islip serving as major commercial and residential hubs that drive significant transaction volume. These central markets feature diverse housing stock ranging from post-war suburban developments to newly constructed luxury communities, while coastal areas like Southampton, East Hampton, and Montauk command premium pricing due to their proximity to beaches and seasonal rental potential that attracts both permanent residents and investment buyers.

Emerging markets in communities such as Patchogue, Riverhead, and Greenport have experienced surprising growth as buyers seek more affordable alternatives to traditional high-end areas, creating opportunities for agents specializing in value-oriented transactions and redevelopment projects. The contrast between these developing markets and established luxury zones like Sag Harbor creates multiple distinct real estate ecosystems within the county, each requiring specialized knowledge and different marketing approaches.

Market Dynamics and Geographic Complexity

Suffolk County's real estate market operates with distinct seasonal patterns that significantly impact pricing and inventory levels, particularly in eastern coastal communities where summer demand can drive rental rates up by 300% compared to winter months. This seasonality creates unique challenges for agents who must navigate fluctuating buyer preferences, vacation home purchases, and the complex interplay between permanent resident sales and investment property transactions that define much of the county's higher-end market activity.

Geographic complexity adds another layer of market sophistication, as properties just miles apart can vary dramatically in value due to school district boundaries, flood zone designations, and proximity to transportation corridors like the Long Island Rail Road. Agents must possess hyperlocal expertise about everything from septic regulations in rural areas to co-op board requirements in more developed communities, making market knowledge extremely specialized and location-dependent.

Why Businesses Need Suffolk County, New York Agent Contact Data

Companies serving the real estate industry can leverage Suffolk County's comprehensive agent database to reach professionals handling transactions across dramatically different price points and property types, from affordable housing initiatives to luxury estate sales exceeding $10 million. This diversity creates opportunities for businesses offering everything from basic transaction management tools to sophisticated wealth management services, as agents require different solutions depending on their specific market segments and client demographics.

The complete email accessibility across all 9,107 licensed agents enables businesses to execute targeted marketing campaigns that can be customized by geographic area, specialization, or transaction volume, allowing for precise audience segmentation that maximizes response rates and conversion potential in this competitive and professional market environment.

Current Property Listings

As of 2/7/2026, Rainer Jessen has 7 properties for sale in Mount Sinai and surrounding areas.

$774,990

Listed 2025-11-06

55 Hamptons Court Dr Unit 55
Eastport, NY  11941

Beds: 4.0
Baths: 2.5
Sq Ft: 3,406
Condos Map
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$1,249,990

Listed 2025-12-18

4 Lotto Ct
Lake Grove, NY  11755

Beds: 5.0
Baths: 3.0
Sq Ft: 3,150
Lot: 21,780 sf
Single Family Map
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$1,199,990

Listed 2026-01-08

1 Lotto Ct
Lake Grove, NY  11755

Beds: 5.0
Baths: 3.0
Sq Ft: 3,150
Lot: 21,780 sf
Single Family Map
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$1,299,990

Listed 2026-01-19

3 Lotto Ct
Lake Grove, NY  11755

Beds: 5.0
Baths: 3.0
Sq Ft: 3,150
Lot: 21,780 sf
Single Family Map
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$525,000

Listed 2025-12-08

108 McKinley Dr
Mastic Beach, NY  11951

Beds: 3.0
Baths: 2.5
Sq Ft: 1,850
Lot: 7,841 sf
Single Family Map
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$649,990

Listed 2025-10-08

26 Forest Ave
Port Jefferson Station, NY  11776

Beds: 3.0
Baths: 2.0
Sq Ft: 1,994
Lot: 11,761 sf
Single Family Map
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$599,900

Listed 2025-07-24

4 Tulip Grove Dr
Lake Grove, NY  11755

Beds: 3.0
Baths: 2.5
Sq Ft: 2,100
Lot: 10,890 sf
Single Family Map
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Current Property Rentals

As of 2/5/2026, Rainer Jessen has the following rental properties available in Mount Sinai and surrounding areas.

$2,250

Listed 2026-01-15

5 Laramie Ct
Coram, NY  11727

Beds: 1.0
Baths: 1.0
Sq Ft: 750
Apartment Map
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