Katie Haggerty

Email Address

[email protected]
Primary Phone

(312) 403-1109

Katie Haggerty is a seasoned real estate advisor specializing in luxury properties across New York City and the Hamptons. As a representative of BARNES International Realty, she offers her clients a sophisticated, global platform paired with highly personalized service and discretion.

With over two decades of experience, Katie is known for her strategic approach, strong relationships, and ability to expertly navigate high-value transactions in both competitive city and resort markets.

Beyond real estate, Katie is the founder of KT STRONG, a foundation dedicated to advancing research and awareness for gastric cancer. She is an active member of the New York Athletic Club and the Montauk Yacht Club, reflecting her deep connection to both city and coastal lifestyles.

Grounded in resilience, philanthropy, and an unwavering commitment to her clients, Katie brings a polished, global perspective to every transaction.

Featured Properties

For Sale

Aerial view of coastal homes beside a broad sandy beach, marked with a red location pin.

$5,900,000

231 Old Montauk Highway, Montauk, NY 11954

4 BEDS
3 BATHS
1,800 Sq.Ft.

For Sale

$4,250,000

15 Horseshoe Rd, Old Westbury, NY 11568

5 BEDS
9 BATHS
6,835 Sq.Ft.

For Sale

Furnished living room with large windows overlooking Central Park and the Manhattan skyline.

$2,275,000

160 CENTRAL Park S 1607, New York City, NY 10019

1 BED
1 BATH
812 Sq.Ft.

Listing Courtesy Adrien Gouirand with Barnes New York

For Sale

Living room with gray sofas and large windows overlooking Central Park and the city skyline.

$2,275,000

160 Central Park S Unit: 1607, New York (Manhattan), NY 10019

1 BED
1 BATH
812 Sq.Ft.

Courtesy of Barnes New York

Pending

Red-brick rowhouse with arched windows, a wooden door, and a leafy tree shading the sidewalk.

$1,850,000

1673 66th Street, Brooklyn, NY 11204

Courtesy of Barnes New York

For Sale

High-rise living room with floor-to-ceiling windows overlooking Manhattan.

$1,295,000

200 E 61ST Street 35B, New York City, NY 10065

1 BED
1 BATH
833 Sq.Ft.

Listing Courtesy Adrien Gouirand with Barnes New York

For Sale

$1,195,000

297 DRIGGS Avenue 6B, Brooklyn, NY 11222

1 BED
1 BATH
650 Sq.Ft.

Listing Courtesy Adrien Gouirand with Barnes New York

For Sale

Open-plan living room with white seating, a round coffee table, and a dark-wood kitchen.

$999,000

24 E 7TH Street 11B, New York City, NY 10003

1 BED
1 BATH
655 Sq.Ft.

Listing Courtesy Adrien Gouirand with Barnes New York

For Sale

Open-plan apartment kitchen and living area with brown cabinetry, blue tile backsplash, and large city-facing window.

$690,000

75 WALL Street 24D, New York City, NY 10005

1 BATH
668 Sq.Ft.

Listing Courtesy Adrien Gouirand with Barnes New York

For Sale

Bedroom and sitting area with built-in wood cabinetry, parquet flooring, and a wide window.

$425,000

60 RIVERSIDE Drive 3H, New York City, NY 10024

1 BATH

Listing Courtesy Alexandria Drevo with Barnes New York

Rental

Coastal home with a swimming pool, manicured lawn, and ocean view.

$295,000/mo

390 Old Montauk Highway, Montauk, NY 11954

4 BEDS
6 BATHS

For Rent

White home with a broad shingle roof, landscaped front garden, and circular gravel driveway.

$250,000/mo

234 Tuckahoe Ln, Southampton, NY 11968

5 BEDS
5 BATHS
3,000 Sq.Ft.

Rental

Large house with a columned entrance, landscaped lawn, sculpted hedges, and a reflecting pool.

$150,000/mo

101 Wyandanch Lane, Southampton, NY 11968

5 BEDS
5 BATHS

Rental

Gray-shingled home behind a swimming pool and stone patio

$120,000/mo

496 Wainscott Harbor Rd, Sagaponack, NY 11962

8 BEDS
8 BATHS

Rental

Backyard swimming pool bordered by lawn, mature trees, and lounge chairs beneath white umbrellas.

$110,000/mo

4 Lee Lane, Wainscott, Wainscott, NY 11975

6 BEDS
5 BATHS

Rental

Aerial view of a shingle-sided home with solar panels, expansive decks, and a swimming pool.

$80,000/mo

32 South Beach Rd, South Hampton, NY 11968

6 BEDS
7 BATHS

Rental

Outdoor swimming pool with submerged steps, gray deck, lounge chairs, and white umbrellas.

$60,000/mo

5 Honeysuckle Lane, East Quogue, NY 11942

5 BEDS
4 BATHS

Rental

Outdoor swimming pool with a broad wood deck, built-in seating, and umbrellas amid mature trees.

$45,000/mo

33 Bayberry Lane, Amagansett, NY 11930

4 BEDS
4 BATHS

Rental

Wooden poolside deck with outdoor dining furniture and mature trees.

$35,000/mo

75 South Main Street, Southampton, NY 11968

9 BEDS
5 BATHS

Rental

White single-story house with dark shutters, framed by mature trees and a broad green lawn.

$35,000/mo

9 Sea Farm Ct, Bridgehampton, NY NY 11932

4 BEDS
4 BATHS

Rental

Dark gray house with a broad deck, expansive lawn, and mature shade trees.

$20,000/mo

73 N Greenwich Street, Montauk, NY 11954

3 BEDS
3 BATHS

For Lease

Wood-clad commercial building with large windows and a BLACK MOUNTAIN CAPITAL sign.

$20,000/mo

81 Montauk Highway, Wainscott, NY 11975

1 BATH
900 Sq.Ft.

Rental

House beside a landscaped garden, with an American flag and water visible through the trees.

$18,000/mo

45 Towd Point Rd, Southampton, NY 11968

3 BEDS
2 BATHS

Rental

Backyard pool beside a shingled house, with a brick patio and outdoor seating.

$15,000/mo

6 Bennett Drive, East Quogue, NY 11942

4 BEDS
3 BATHS

For Sale

Modern dark-sided home behind dense greenery, with a curving stone driveway and red-leaved tree.

$4,000/mo

29 Box Tree Road, Quogue, NY 11959

3 BEDS
2 BATHS
2,000 Sq.Ft.

For Lease

Bright kitchen with a vaulted wood ceiling, large butcher-block island, and black-framed windows overlooking greenery.

73 North Greenwich Street, Montauk, NY 11954

3 BEDS
3 BATHS
1,700 Sq.Ft.

View All Properties

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Meet Katie Haggerty

Katie Haggerty

Get to Know Me

Featured Properties

$5,900,000

$4,250,000

$2,275,000

$2,275,000

$1,850,000

$1,295,000

$1,195,000

$999,000

$690,000

$425,000