John Duffy's Profile Photo

John Duffy

Licensed Real Estate Salesperson
john.duffy@compass.com
M: 516-361-1794

Social Media

Specialties

Listing Agent, Relocation, Foreclosure, Commercial R.E.
About John
John is a trusted advisor to his clients, always working to maximize their return. He brings over 25 years of experience in finance to the Hamptons market. His background on Wall street and working in the tech industry has prepared him to excel in the real estate business.


John started selling real estate in the highly competitive Silicon Valley area in 2013 and hasn’t looked back since.


We work tirelessly for our clients to secure the best deals. Whether it’s commercial real estate or residential we look forward to making things happen for you.


Caryn and I have been coming to the Hamptons for over 30 years, and we currently reside full time in East Hampton. Let us help you find your place in the world.

John Duffy’s Listings

a front view of a house with a garden
a front view of a house with garden
a house view with a garden space
a view of backyard with swimming pool and patio
a kitchen with stainless steel appliances granite countertop a stove top oven a sink a stove and a dining table with the kitchen view
a large kitchen with stainless steel appliances kitchen island granite countertop a sink and cabinets
a kitchen with stainless steel appliances granite countertop a table chairs sink and cabinets
a living room with furniture and a large window
a view of a dining room with furniture window and outside view
a living room with furniture and a window
a utility room with dryer and washer
a bedroom with a bed and a window
a bathroom with a granite countertop sink mirror and toilet
a bedroom with a bed and a window
a bathroom with a toilet sink and mirror
a bedroom with a bed mirror and window
a bathroom with a toilet sink and mirror
a bathroom with a large tub sink and large window
a spacious bedroom with a bed mirror and window
a view of a workspace with furniture and a window
a spacious bedroom with a bed a couch and large window
a spacious bedroom with a large bed and a chandelier
a bath room with a toilet a sink and a bath tub
a view of a tennis court
a view of a room with gym equipment
an aerial view of residential houses with outdoor space and parking
an aerial view of a house with a yard
a view of a house with a yard
an aerial view of a house with a yard
a front view of a house with a yard
$3,895,000 | 14 Quarty Circle, East Hampton, NY 11937
$3,895,000 | 14 Quarty Circle, East Hampton, NY 11937
$3,895,000 | 14 Quarty Circle, East Hampton, NY 11937
$3,895,000 | 14 Quarty Circle, East Hampton, NY 11937
1/34
Listed By Compass

$3,895,000

5
Bedrooms
3,654
Square Feet
1.39
Acres

14 Quarty Circle, East Hampton, NY 11937

$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
$3,595,000 | 3 Cosdrew Lane, East Hampton, NY 11937
1/31
Listed By CompassActive Under Contract

$3,595,000

7
Bedrooms
4,400
Square Feet
0.58
Acres

3 Cosdrew Lane, East Hampton, NY 11937

John Duffy’s Transactions

Past Sales
$10,500,000 | 125 Snake Hollow Rd | Bridgehampton

$10,500,000

125 Snake Hollow Rd

Bridgehampton

$5,250,000 | 1 Mariner Dr | Southampton

$5,250,000

1 Mariner Dr

Southampton

a front view of a house with a yard

$3,595,000

6
Bedrooms
5,297
Square Feet
0.84
Acres

18 Barnes Avenue, East Hampton, NY 11937

a front view of a house with a yard

$3,595,000

6
Bedrooms
5,297
Square Feet
0.84
Acres

18 Barnes Avenue, East Hampton, NY 11937

a view of outdoor space yard and swimming pool

$3,350,000

4
Bedrooms
4,219
Square Feet
3.5
Acres

144 Hands Creek Road, East Hampton, NY 11937

a front view of a house with a garden and trees

$3,250,000

6
Bedrooms
4,100
Square Feet
0.37
Acres

125 Mulford Avenue, East Hampton, NY 11937

a view of an house with backyard and garden

$3,250,000

7
Bedrooms
4,426
Square Feet
0.46
Acres

62 Whooping Hollow Road, East Hampton, NY 11937

$2,950,000 | 125 Mulford Avenue, East Hampton, NY 11937

$2,950,000

6
Bedrooms
4,100
Square Feet
0.37
Acres

125 Mulford Avenue, East Hampton, NY 11937

a front view of a house with a yard

$2,500,000

5
Bedrooms
2,800
Square Feet
0.32
Acres

8 3rd Street, East Hampton, NY 11937

$2,450,000

2.39
Acres

7 Quarty Circle, East Hampton, NY 11937

$2,300,000 | 6 Leecon Ct | Southampton

$2,300,000

6 Leecon Ct

Southampton

$2,100,000 | 30 Quarty Ct | East Hampton

$2,100,000

30 Quarty Ct

East Hampton

a view of back yard

$900,000

4
Bedrooms
1,040
Square Feet
0.21
Acres

17 Windward Way, Southampton, NY 11968

Listing Courtesy of Douglas Elliman Real Estate

$850,000

0.47
Acres

52 Cosdrew Lane, East Hampton, NY 11937

$820,000 | 419 Montauk Highway, Wainscott, NY 11975

$820,000

3
Bedrooms
1
Acres

419 Montauk Highway, Wainscott, NY 11975

Listing Courtesy of Coldwell Banker M&D Good Life

$650,000 | 49 Cosdrew Ln | East Hampton

$650,000

49 Cosdrew Ln

East Hampton