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For sale

$4,000,000

3 beds0.54 acres

100 Peconic AveShelter Island, NY 11964

Homes, condos and townhomes · MLS 11863317 · Listed 122 days ago (Jun 30, 2026)

Bay, harbor, inlet or sound · Waterfront, relationship not specified · Waterfront details

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For sale: Listed and available according to the MyStateMLS feed.

About this property

This waterfront is classic Shelter Island. Set on more than half an acre with 153 feet of private, bulkheaded sandy beach, this 1952 cottage keeps its head turned to the water from nearly every room. A fireplace and hardwood floors anchor the living room, the primary suite wakes to the Bay, and a covered waterside patio waits for the long part of the evening. Wooden steps lead down to your own beach, with room for a dock and possible pool with an artist's cottage ready to become whatever you dream up.

Description provided by the listing brokerage.

MLS-reported waterfront

Waterfront details

The listing reports the property as waterfront but does not say how it meets the water. Ask the listing agent whether the parcel itself adjoins the shoreline.

Relationship to the water
Waterfront, relationship not specified
Water body
Not provided. Ask the listing agent.
Frontage length
Not provided. Ask the listing agent.
Water access arrangement
Not provided. Ask the listing agent.
Docks, slips, lifts, moorings
Not provided. Ask the listing agent.
Dock depth
Not provided. Ask the listing agent.
Shoreline
Not provided. Ask the listing agent.
Seasonal or tidal conditions
Not provided. Ask the listing agent.
Boating limits (bridges, depth, open-water access)
Not provided. Ask the listing agent.
Why this is listed as waterfront
  • WaterfrontYN “Yes”: The listing is marked waterfront.
  • WaterfrontFeatures “Sound, Bay”: Describes the water without a frontage value.
  • PropertyTypeDetail “house”: Property form used to read the frontage relationship.

Classified from fields in the MyStateMLS listing data. It has not been independently verified, and it is not a survey, title examination or legal determination of shoreline or access rights. Rules version 2026-10-29.1. How we classify waterfront

Something wrong with this classification? Report a waterfront classification issue. Questions about frontage, docks or access are best answered by Melina Wein of Compass.

Facts

List price
$4,000,000
Status
For sale
Property type
House
Bedrooms
3
Full baths
3
Lot size
0.54 acres (23,622 sq ft)
Year built
1952
Stories
1
County
Suffolk County
MLS number
11863317
Annual property tax
$15,903

Facts are reported by the listing brokerage. Items not listed were not provided; that does not mean the property lacks them.

Features

Appliances

  • Washer
  • Range
  • Refrigerator
  • Dryer
  • Dishwasher

Flooring

  • Hardwood

Basement

  • Unfinished

Heating

  • Oil

Sewer

  • Septic Tank

Location

The pin is the listing's reported coordinates and may be approximate. It is not a parcel boundary or shoreline, and no flood, wetland or hazard conclusion should be drawn from it. See more listings in Shelter Island.

Price and status history

    Changes observed by Waterfront Homes in MyStateMLS data since Oct 29, 2026. This is not a public-record sales history; MyStateMLS does not publish sold prices.

    Estimate a monthly payment

    $800,000
    Illustrative. Replace with a quote from your lender.
    From the listing. Taxes can change after a sale.
    Get a quote; rates vary widely by location.
    Manufactured homes on a leased lot.
    Applied only while the loan is over 80% of the price. Illustrative.

    Estimated monthly payment

    $22,718 per month

    Principal and interest$20,226
    Property tax$1,325
    Homeowners insurance$1,167
    Loan amount$3,200,000
    Total interest over the term$4,081,424

    An estimate for comparison only, not a loan offer or approval. Actual rates, taxes, insurance, PMI and fees depend on your lender, credit, location and loan program.

    Similar waterfront listings nearby

    Waterfront listings of the same property type and water type in Shelter Island, priced within 25% of this listing ($3,000,000 to $5,000,000), newest first. Each one passes the same waterfront rules. See all matches

    Photo 1 of 20, home at 100 Peconic, Shelter Island, NY 11964
    For sale153 ft frontage reported

    $4,000,000

    3 beds1,626 sq ft

    Shelter Island SoundBay, harbor, inlet or soundWaterfront, relationship not specified

    100 PeconicShelter Island, NY 11964

    House · MLS 11507727

    Listing courtesy of M WEIN REALTY INC · MyStateMLS

    Questions to ask before you buy

    Questions worth investigating for any waterfront property. They are not claims that this property has a problem or meets any condition.

    1. Who owns the shoreline and the land under the water, and are there easements or public-access rights along it?Ownership can stop at a high-water line, a survey line or a seawall. A title search and survey answer this, not the listing.
    2. Is a dock, slip, lift or mooring included, and do the rights transfer to you?Docks can be shared, leased, assigned by an association or held under a permit that does not automatically transfer.
    3. What permits exist for the dock, seawall or other shoreline structures, and what would new work require?Shoreline work is often regulated by local, state and federal agencies.
    4. How much does the water level change by season, by tide or by reservoir management?Depth at a dock in one season can differ a lot in another.
    5. What does flood insurance cost for this property, and what does the current flood map show?Get a quote from an insurer or agent. A flood zone is not a premium, and no zone does not mean no risk.
    6. What maintenance does the shoreline need (seawall, bulkhead, riprap, erosion), and what has been done recently?Shoreline structures are expensive to repair; ask for records and inspection reports.
    7. How are water, sewer or septic, and power provided?Waterfront septic systems and wells can have extra rules and inspections.
    8. How do you reach the property by road year-round, and who maintains that road?Some waterfront roads are private, seasonal or shared.
    9. What local rules apply: rentals, docks, boat lifts, fences, tree removal, setbacks?Rules come from the town, county, state, lake authority or association and vary widely.

    Printable due-diligence checklist · Ownership budget planner · FEMA Flood Map Service Center (official flood maps; look up the address yourself)

    Guides and next steps

    Listing courtesy of Compass. Listing agent: Melina Wein. Co-listing agent: Marianne Carey. Listings provided by MyStateMLS.

    Listing last updated by the brokerage Oct 30, 2026, 1:27 PM UTC. Waterfront Homes last received MyStateMLS data Oct 30, 2026, 5:01 PM UTC. Information is deemed reliable but not guaranteed; verify all details with the listing agent.