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Meet Your Real Estate Advisor

Mathew Johnson

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Mathew Johnson is a Real Estate Advisor with Douglas Elliman, serving buyers and sellers across Long Island’s North Shore with the same discipline, attention to detail, and genuine care that have defined every stage of his career. His client list is intentionally small, his local knowledge runs deep, and his approach is built on a simple belief: real estate should feel like a partnership, not a transaction.

About Mathew 
NEIGHBORHOODS

Explore Towns

Every neighborhood on the North Shore has its own character, its own market dynamics, and its own reasons people choose to stay. Whether you’re drawn to the colonial harbors of Setauket and Stony Brook, the vibrant waterfronts of Huntington and Northport, or the estate communities of the Gold Coast — finding the right home starts with understanding the differences.

  • A large house surrounded by trees and greenery, with a view of a river or lake in the background during sunset.

    Three Village Area

    LOCATIONS

    Setauket • East Setauket • Stony Brook, Old Field • Strongs Neck • Poquott • Belle Terre • Port Jefferson • Mount Sinai

  • Living room with large windows overlooking a body of water, featuring a stone fireplace, beige sofas, a wooden coffee table, and minimal decor in natural tones.

    Smithtown & The Nissequogue River Corridor

    LOCATIONS

    Smithtown • St. James • Head of the Harbor • Nissequogue • Kings Park • Fort Salonga

  • A large white mansion on a rocky shoreline surrounded by green trees, facing a body of water with sailboats, under a partly cloudy sky.

    Huntington & Cold Spring Harbor

    LOCATIONS


    Huntington • Huntington Bay • Lloyd Harbor • Cold Spring Harbor

  • A large house with gray and brick exterior, large windows, and multiple gabled roofs, surrounded by lush green trees, with a swimming pool in the foreground, and a waterfront view.

    Northport & Centerport

    LOCATIONS

    Northport • Centerport • East Northport • Greenlawn • Asharoken • Eatons Neck

White multi-story house with a swimming pool in the backyard, surrounded by greenery and outdoor furniture, including cushioned sofas and a small pergola. 
LONG ISLAND REAL ESTATE AUTHORITY

Know the Market Before You Move

On the North Shore, the difference between finding the right home and losing it comes down to three things: preparation, relationships, and intelligence that goes beyond what’s publicly available. Turnkey homes are trading with multiple offers. Inventory remains historically tight. And the best properties often move before they ever appear on a search portal.

Mathew provides clients with proprietary market analysis across every community he serves — from Setauket and Old Field through Huntington and Cold Spring Harbor to the Gold Coast. Quarterly reports with real, neighborhood-level data on pricing trends, inventory shifts, and absorption rates. Not headlines. Not hunches. Data you can make decisions with.

Download the Market Report

3.8 Months

 Average Inventory Supply

$1.2M

North Shore Median Sale Price

42

Average Days on Market

EXCLUSIVE properties
for an EXTRAORDINARY life

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Neighbohoods

Local Expertise

Mathew’s practice spans the full length of Long Island’s North Shore — from the colonial harbors and top-ranked school districts of the Three Village area to the Gatsby-era estates of Nassau County’s Gold Coast. Each community has its own pricing dynamics, its own buyer profile, and its own unwritten rules. Knowing the difference is where real advisory work begins.

  • Large two-story house with brick and white siding, front porch, surrounded by a well-manicured lawn, bushes, and trees.

    Setaucket

  • Beachfront house with a stone foundation, white wooden porch, and multiple windows overlooking the water, with trees in the background.

    Stony Brook

  • A large brick house with white columns and a porch, surrounded by trees and a driveway, in the late afternoon.

    Old Field

  • Backyard with swimming pool, patio furniture, and a large white house with dormer windows surrounded by trees.

    Belle Terre

  • A peaceful rural scene featuring a modern farmhouse with wood siding, surrounded by manicured lawns, trees, and flowering plants, with a gravel driveway leading to the house.

    Port Jefferson

  • A large house near a body of water with a dock and boats, surrounded by grass and trees under a blue sky with clouds.

    Poquott

  • A large house with gray shingle siding and multiple windows sits on a hill behind a backyard with a swimming pool surrounded by a stone deck and lush greenery, with trees and a pond in the foreground.

    Mount Sinai

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Turn Intention Into Action

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Get Expert Advice

Start a Conversation

Buying, selling, relocating, or just starting to think about what’s next? Every conversation with Mathew is confidential, never obligatory, and always focused on your goals. If you’ve been looking for someone you trust before you’ve even met them — you’re in the right place.

845.554.9292
300 Main St, East Setauket, NY 11733
mathew.johnson@elliman.com

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