Single Family

3645 and 3651 Soundview Avenue

Active · Southold · Suffolk County, NY 11958

Asking price$6,200,000Estimate monthly payment Request a Showing

Bedrooms: 7 Beds
Bathrooms: 5 Baths
Year built: 1986
Est. monthly taxes: $2,422.25

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About this home

Rare North Fork Beachfront estate, shy 3.25 acre compound! The main house features over 3,000 sq. ft. of living space and the beach house offers approximately 1,600 sq. ft. A powder white sandy path leads to a gorgeous private beach with 116+ ft. of waterfront. Enjoy panoramic water views of the sparkling Long Island Sound and enchanting sunsets with this incredible property that presents a multitude of opportunities for its next owner. Listed as a compound but also separately: see 3645 Soundview Ave - the main house (MLS #1007876) and 3651 Soundview Ave - the beach house (MLS #1009245). Please note that this compound listing reflects 3645 Soundview Avenue in fields where only one property's information can be displayed. Please note that combined information of both properties is also displayed where permissible.

Listing snapshot

Days on site: 34 days
Listed on MLS: Sep 24, 2026
Full baths: 4
Half baths: 1
Annual property tax (MLS): $29,067
Tax year: 2026
Area source (MLS): Other
Listing brokerage: Compass Greater NY LLC
MLS ID: KEY1049858
Last updated: Oct 24, 2026

General features

Property type: Single Family
Property subtype: Single Family Residence
Year built: 1986
Garage: Yes
Garage spaces: 3
Parking: Attached, Detached, Driveway
Water source: Well
Sewer: Cesspool
Utilities: Electricity Connected, Trash Collection Private, Water Connected

Interior features

Basement: Full
Heating: Electric, Heat Pump, Oil
Cooling: Central Air, Ductless, Multi Units
Interior: First Floor Bedroom
Appliances: Dishwasher, Dryer, Freezer, Range, Refrigerator, Washer
Flooring: Hardwood, Tile
Fireplace: Yes

Exterior features

Architectural style: Colonial
Construction materials: Frame, Stucco
Private pool: No

Schools (MLS)

Elementary school: Mattituck-Cutchogue Elementary Sch
Elementary school district: Mattituck-Cutchogue
Middle school: Mattituck Junior-Senior High School
Middle school district: Mattituck-Cutchogue
High school: Mattituck Junior-Senior High School
High school district: Mattituck-Cutchogue

School information is provided by the MLS. Confirm attendance eligibility with the school district.

Recent activity

Oct 24, 2026Listing updated from MLS
Sep 24, 2026First seen on this site
Sep 24, 2026MLS status changed

Location

Southold · Suffolk County, NY 11958Show interactive map

3645 and 3651 Soundview Avenue

Southold · Suffolk County, NY 11958

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Loan detailsFixed-rate, fully amortizing loan. Edit the assumptions below; no market rate is supplied.

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Property expenses (USD)

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