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Marc Greene
Licensed Real Estate Salesperson
REALTOR®
(646) 262-2516

18 Walnut Avenue , Setauket, NY 11733

$949,000
  • 18 Walnut Avenue , Setauket, NY 11733 Main Photo

33 Photos

New to the Market Active
BEDS3 BATHS2 full SQUARE FEET2,250 MLS#1041938
STATUSActive PROPERTY TYPEResidential - Single Family SCHOOLThree Village

Property Description

The very best of North Shore living - just up the block from your private Village beach on Port Jefferson Harbor, with lounging areas and mooring rights - introducing 18 Walnut, in the idyllic, harborside community that is the Incorporated Village of Poquott. Warmth abound, this home has elements of craftsman, bungalow, and saltbox design, inside and out, with genuine curb appeal and a footprint spanning approximately 2,250 sq ft that stands apart from the cookie-cutter norm - a coastal charmer with upgrades already in place and room to make it your own. Enter through a vaulted front lounge room, wrapped in windows with 9' ceilings, that flows wonderfully into a generous living room, featuring an original stone fireplace. An oversized entry transitions into a formal dining room, with a bay window, that makes for great entertaining space. The two-tone cottage kitchen offers a 2023 gas range, 2025 dishwasher, breakfast bar, upgraded bay window, and slider to the yard, with real upside for those looking to further expand. Just off the kitchen, a cozy den features more vaulted ceilings and 2 new skylights, while antique details bring character to a spacious first floor full bath with walk-in shower and laundry. Upstairs, the primary bedroom spans the width of the house, with 11' ceilings, dual shallow walk-in closets outfitted with systems, a full wall of finished eave storage, and potential to add an ensuite. An upgraded full bath, 2 additional bedrooms, a generous linen closet, and attic access complete the second floor. The lower level, refinished in 2025, offers an above-grade walkout room (to the front) with 3 windows - ideal as a den or study - plus access to additional unfinished storage and a finished exterior shed built into the residence. Significant structure and system upgrades include new skylights (2025), a partial new roof, mostly-upgraded Andersen windows, 2015 Lennox central air and heat, 2011 vinyl cedar impression siding with Azek trim and roof, extensive sheetrock and insulation work, a 2018 hot water heater, 200-amp electrical service, floor plan changes, and more. The backyard is secret-garden style - enveloped in greenery, flowering trees and plantings, with a natural stone pathway and patio, a deck strung with bistro lighting, and an outdoor shower - while the front offers a gravel driveway, planting beds, a paver walkway and patio, and ample parking. Village of Poquott residents are afforded access to three private beaches on Port Jeff & Setauket Harbors, with exclusive mooring rights

18 Walnut Avenue | MLS# 1041938

This single family home located at 18 Walnut Avenue , Setauket, NY 11733 is currently listed for sale with an asking price of $949,000. This property was built in 1950 and has 3 bedrooms and 2 full baths with 2250 sq. ft. Walnut Avenue is located within the Three Village school district. Search Setauket real estate on mgreene.coachrealtors.com today.

Property Features

Property Type: Residential - Single Family
Basement: Finished, Full, Partially Finished, See Remarks, Storage Space, Walk-Out Access
Basement: Yes
Cooling: Central Air
Fireplaces: 1
Heating: Hot Air, Oil, Other
Home Style: Colonial, Craftsman, Other, Saltbox, Traditional
Lot Size: 0.14 Acres
Taxes: $14,041
Year Built: 1950

Amenities

First Floor Full Bath
Breakfast Bar
Cathedral Ceiling(s)
Crown Molding
Eat-in Kitchen
Entrance Foyer
Formal Dining
High Ceilings
His and Hers Closets
Open Floorplan
Original Details
Other
Pantry
Recessed Lighting
Storage
Dock
Fire Pit
Garden
Mooring
Other
Playground
Tennis Court(s)

Feature Descriptions

Appliances: Dishwasher, Dryer, Gas Range, Microwave, Refrigerator, Stainless Steel Appliance(s), Washer
Association Amenities: Boat Dock, Other, Park, Playground, Tennis Court(s)
Attic: Pull Stairs
Beach Rights: Y
Community Features: Other, Park, Playground, Tennis Court(s)
Exterior: Frame, Vinyl Siding
Fireplace Features: Living Room, Wood Burning
Fireplace Y/N: Yes
Flooring: Hardwood
Formal Dining: Yes
Heating Zones: 2
On Market Date: 2026-09-02
Other Structures: Shed(s)
Parcel Number: 0205-007-00-05-00-024-000
Parking Features: Driveway
Patio And Porch: Deck, Patio
Rental Term: Monthly
Rooms Total: 9
Sewer: Cesspool
Skylight: Y
Utilities: Electricity Connected, Water Connected
Water: Public
Waterfront Features: Beach Access
Window Features: Bay Window(s), Skylight(s), Wall of Windows

Local Schools

High School: Ward Melville Senior High School
Middle School: Paul J Gelinas Junior High School
Elementary School: Setauket Elementary School
School District: Three Village

Listed By / Shown By

Listing By

Agency Name: Douglas Elliman Real Estate
Agency Contact: 631-549-4400

Shown By

Agent Name: Marc Greene
Agent Phone: (646) 262-2516
Agency Title: Howard Hanna | Coach Realtors

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Estimated Payment

$ 5,522.42 per month $4,075.55 Principal & Interest $1,170.08 Property Tax $276.79 Homeowner's Insurance

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 09/03/2026. The listing information on this page last changed on 09/03/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Thu 09/03/2026 12:12:22 AM EST) or OneKey MLS (last updated Thu 09/03/2026 12:07:27 AM EST). Real estate listings held by brokerage firms other than Howard Hanna | Coach Realtors may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.

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