Justin Duffy
Licensed Associate Real Estate Broker
Brown Harris Stevens

Experience
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Recent deals
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Neighborhood expertise (5)
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About Justin Duffy
**Career Average List-to-Contract Time Under 30 days
**#1 Highest Average Sales Price Per Listing Among NYC Brokerages (The Real Deal 2024...
**Career Average List-to-Contract Time Under 30 days
**#1 Highest Average Sales Price Per Listing Among NYC Brokerages (The Real Deal 2024 Rankings)
www.FifthMadisonGroup.com
JUSTIN DUFFY is a meticulous modern real estate professional with traditional business values. He is the founder of Fifth Madison Group at Brown Harris Stevens, a small boutique team dedicated to elevating the standard of marketing and brokerage on the Upper East Side. Over the past decade as a broker, Justin has become known for his honesty and candor, his ability to translate customers' goals into strategy, his ability to usher the transaction forward, and a genuine care for his clients' wellbeing. His clients often commend his professionalism, his ability to remain calm in difficult negotiations, and his sense of humor. Prior to founding Fifth Madison Group at Brown Harris Stevens, Justin spent several years at Sotheby's International Realty after leading another large, top-producing team at a smaller boutique real estate firm.
Previous to real estate, Justin worked in the fashion industry as a regional manager, merchandiser, store designer, and window dresser. He was born and raised in Brick, NJ along the Jersey Shore and currently resides on 62nd and Park Avenue with his five-year-old rescue dog, Terra. You can often find him at East 60’s neighborhood staples such as Bel Ami, David Burke Tavern and Equinox, or volunteering at New York Common Pantry.
Justin is an active member of the Real Estate Board of New York, New York Residential Agent Continuum, and the American Real Estate Association. He holds a Master Certified Negotiation Expert® designation from RENI and is a licensed Notary Public. He is deeply involved in the brokerage community and in the Upper East Side neighborhood he calls home.
Fifth Madison Group at Brown Harris Stevens is not just a brokerage team — it’s a movement to thoughtfully and strategically reposition one of New York’s most iconic neighborhoods for the next generation.
We look forward to working for you.
NY License Number
10301219946 (Expires 04/01/2027)
NY Licensed Name
Duffy Justin
Building expertise
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