11 Sunnyside Avenue

Shelter Island, NY
$ 5,500,000 Beds 4 Baths 5.5 Sq 4,000
Monthly Estimate* How much can I afford?

An architecturally significant modern retreat set on two private acres within coveted Shelter Island Heights owners association. Floor-to-ceiling glass dissolves the boundary between indoors and out, framing the surrounding natural environment from nearly every room. Conceived by developer Angelo Varischetti in collaboration with the award-winning team at WE+ Architecture & Design, the home is a study in light, landscape, and contemporary form. Newly constructed and spanning approximately 4,000 square feet, the residence offers four bedrooms and five-and-a-half bathrooms, thoughtfully designed for both privacy and connection. The open-concept living spaces are anchored by soaring window walls and refined materiality, creating a seamless flow between living, dining, and kitchen areas. The chef's kitchen is both functional and sculptural, featuring premium appliances, custom millwork, and an oversized island designed for gathering. Throughout the home, curated finishes including stone surfaces, bespoke cabinetry, and carefully considered architectural details reinforce the home's modern design language. Each bedroom suite is privately positioned with its own ensuite bath and direct access to the surrounding landscape, offering a retreat-like experience for both owners and guests. The lower level provides flexibility for a wellness area, gym, or media space. Outdoor living is equally compelling. A 50x14 heated knife-edge pool is set within lush, natural surroundings, complemented by expansive decking, an outdoor shower, full bath, and multiple areas for dining and entertaining. The setting is intentionally private, with mature greenery and open sky enhancing the sense of escape. Located within the Shelter Island Heights community, the property offers access to private beaches, tennis, and the island's most sought-after destinations, all while maintaining a sense of seclusion that is increasingly rare. This is Shelter Island at its best. Where architecture, landscape, and lifestyle converge to create a home that feels both elevated and effortless.

Single Family

  • Price
  • $ 5,500,000
  • City
  • Shelter Island
  • Bedrooms
  • 4
  • Full Bathrooms
  • 5
  • County
  • SUFFOLK
  • Half Bathrooms
  • 1
  • Area
  • Lot Size
  • 200 Acres
  • Zip
  • 11964
  • Sqr Footage
  • 4,000
  • Year Built
  • 2026
  • Taxes
  • $ 4030
  • Style
  • A-Frame
  • MLS#
  • 990118
Listed By: Douglas Elliman Real Estate
Data Source: Listings courtesy of OneKey® MLS as distributed by MLS GRID

Features

General

Sewer Septic Tank
Heating Propane,Radiant Floor
Cooling Central Air
Utilities See Remarks
Appliances Dishwasher,Oven,Refrigerator,Stainless Steel Appliance(s)
Architectural Style A-Frame
Construction Materials Unknown
Year Built 2026
Property Subtype Single Family Residence
Tax Year 2025
Parcel Number 0700-007-00-02-00-004-000
County Suffolk County
Property Type Residential
HOA No
Garage Y/N No
Total Rooms 8
Full Baths 5
High School Shelter Island School
City Shelter Island
Senior Community Y/N No
High School District Shelter Island
Carport Spaces 1
Carport Y/N Yes
Elementary School Shelter Island School
Property Attached Y/N No
Tax Annual Amount 4030.72
Middle/Junior High School Shelter Island School
Building Area Units Square Feet
Standard Status Active
Middle/Junior School District Shelter Island
Elementary School District Shelter Island
Tax Assessed Value 577500
PostalCity Shelter Island
AttributionContact 631-725-0200
Listing Appliances Dishwasher, Oven, Refrigerator, Stainless Steel Appliance(s)

Interior Features

Interior Amenities First Floor Bedroom,First Floor Full Bath,Kitchen Island,Natural Woodwork,Open Floorplan,Open Kitchen,Pantry,Primary Bathroom,Master Downstairs,Recessed Lighting,Sound System,Speakers,Storage,Walk Th
Basement Partially Finished
Total Fireplaces 1
Basement Features Partially Finished
Basement (Y/N) Yes
Fireplace Y/N Yes
Half Baths 1
Total Bedrooms 4
Total Baths 6
General Features First Floor Bedroom,First Floor Full Bath,Kitchen Island,Natural Woodwork,Open Floorplan,Open Kitchen,Pantry,Primary Bathroom,Master Downstairs,Recessed Lighting,Sound System,Speakers,Storage
Walk-In Closet Yes

Exterior Features

Parking Features Carport
Water Source None
Parking Features Carport
Building Area Total 5500
Waterfront Y/N No

Amenities

  • Foreclosure
  • Views
  • Short Sale
  • New Construction
  • Adult 55+
  • Lease To Own
  • No HOA Fees
  • Furnished
  • Primary On Main
  • Air Conditioning
  • Seller Finance
  • Green
  • Fixer Upper
  • Horse
  • Golf
  • Fireplace
  • Deck
  • Garage
  • Basement
  • Pool

Affordability Calculator

$3,786

Per Month

Based on the average sale price from the Farmingdale, NY office

  • Monthly Principal & interest $2,658
  • Monthly Property Taxes $1,062
  • Monthly Home Insurance $67
Adjust Payment Options
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Let's determine your purchasing power. Working with my mortgage partner, you'll have the information you need to shop for a home with confidence.

Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA, or jumbo loans.

Mortgage calculator provided courtesy of Inside Real Estate.

Schools

Elementary School Shelter Island School Elementary School
Middle School Shelter Island School Middle School
High School Shelter Island School High School

Price History

4/24/2026 Listed $5,500,000

Property vs Zip Code Average in 11964

Price
AVG $3.17M
$5.5M
Taxes
AVG $8,843
$4,030
Year Built
AVG 1987
2026
Visits
AVG 73
120
Data Provided by Inside Real Estate®

Areas That We Cover

11 Sunnyside Avenue Shelter Island, NY is a Single Family Home for sale at $5500000 with 4000 sqft and a lot size of 200 Acres Acre(s). 11 Sunnyside Avenue Shelter Island has 4 bedrooms, 5 baths and was built in 2026. The property's zip code is 11964 which is in Shelter Island, NY

*Information deemed reliable but not guaranteed.

Financial calculator disclaimer: Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

Mortgage calculator provided courtesy of Inside Real Estate.

All information deemed reliable, but not guaranteed, and should be independently verified. The real estate information and related content displayed on this site 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.