For Sale
Single family home for sale at 40 Prospect Ave, Oyster Bay, NY 11579 | MLS# 1049376 | Listing updated on 2026-10-02
Photo 1 of Single family home for sale at 40 Prospect Ave, Oyster Bay, NY 11579 | MLS# 1049376 | Listing updated on 2026-10-02
Photo 2 of Single family home for sale at 40 Prospect Ave, Oyster Bay, NY 11579 | MLS# 1049376 | Listing updated on 2026-10-02
Photo 3 of Single family home for sale at 40 Prospect Ave, Oyster Bay, NY 11579 | MLS# 1049376 | Listing updated on 2026-10-02
Photo 4 of Single family home for sale at 40 Prospect Ave, Oyster Bay, NY 11579 | MLS# 1049376 | Listing updated on 2026-10-02
41+
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Street View

$2,649,000

Monthly Est:$13,185

  • Beds Icon4 Beds
  • Beds Icon
    3 Baths
  • Beds Icon2,873sqft

40 Prospect Ave, Oyster Bay, NY 11579

$13,185/moEst:

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  • Single Family Residence

  • Built in 1910

  • $-- HOA

  • 17,398 sqft lot

  • $922/sq.ft

Description

Upon entering through the iron gates into the verdant walled garden of 40 Prospect Avenue, one witnesses a stately colonial sitting atop over 17,000 square feet of property with panoramic views of Hempstead Harbor and incredible sunsets. Once inside, you are drawn to the living room with its built-in bookshelves, wood burning fireplace and picture windows overlooking the water and a large backyard with steps leading down towards the beach. The eat-in kitchen has large windows overlooking the boats bobbing in the harbor. The first floor also features a dining room with a fireplace and a full bath. Upstairs, the primary bedroom extends across the back of the house with two closets and great views. There are three other bedrooms on the second floor and a full bath. A stairway leads to the attic with high ceilings offering endless possibilities for use as a gym or great room. The lower level has a den with a wood burning fireplace, a full bath, built-in bookshelves, doors out to the patio and, best of all, expansive views of Hempstead Harbor clear across to the shores of Westchester County. An opportunity like this in Sea Cliff is rare. Seize it while you can!

  • Houzeo last checked: 6 hours ago
  • Listing updated: October 2, 2026 at 7:47 pm
  • Listing Provided by: Sheila B. Wenger (516) 507-9303 | Douglas Elliman Real Estate (516) 759-0400
  • Source: OneKey MLS-NY | MLS#: 1049376 OneKey MLS-NY

Property Details

  • Status

    Active

  • Type

    Single Family Residence

  • No. of Stories

    -

  • County

    Nassau County

  • City

    Oyster Bay

  • Neighborhood

    --

  • Year Built

    1910

  • HOA Fees

    -

  • Finished Area

    2,873 sqft

  • Lot Size

    17,398 sqft lot

  • Basement Area

    - sqft

  • MLS Name

    OneKey MLS

  • MLS Number

    1049376

  • MLS Status

    Active

  • Days on Market

    9

  • Cumulative Days on Market

    4

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Location

Facts & Features

Rooms

  • Bedrooms & bathrooms

    Bedrooms: 4

    Bathrooms: 3

  • Living Room

    Level: First

  • Dining Room

    Level: First

  • Kitchen

    Level: First

  • Bathroom 1

    Level: First

  • Bedroom 1

    Level: Second

  • Bedroom 2

    Level: Second

  • Bedroom 3

    Level: Second

  • Bedroom 4

    Level: Second

  • Bathroom 2

    Level: Second

  • Bonus Room

    Level: Lower

  • Bonus Room

    Level: Other

Interior

  • Sewer

    Cesspool

  • Cooling

    Central Air, Wall/window Unit(s)

  • Window Features

    Oversized Windows

  • Flooring

    Hardwood

  • Interior Features

    First Floor Full Bath, Built In Features, Eat In Kitchen, Formal Dining, Natural Woodwork, Original Details

  • Heating

    Forced Air

  • Appliances

    Gas Range, Refrigerator, Gas Water Heater

  • Exterior Features

    Garden

Construction

  • Year Built

    Year Built: 1910

  • Home type

    Single Family Residence

  • Construction Materials

    Block, Frame

  • Architectural Style

    Colonial

  • Property Condition

    Actual

Utilities & Energy

  • Basement

    Full, Partially Finished, Walk Out Access

  • Water Source

    Public

  • Parking Features

    Driveway, Garage

  • Security Features

    Security System

  • Utilities

    Electricity Connected, Natural Gas Connected

  • Fireplace Features

    Basement, Living Room

Other Features

  • Lot Features

    Back Yard, Front Yard, Views

  • Patio And Porch Features

    Patio, Porch

Price History

DateEventPrice

09/28/2026

Source: mls_logoOneKey MLS-NY #KEY1049376

Listed for Sale

$2,649,000

$922/sqft

Nearby Homes

Based on information from OneKey MLS, through Oct 08, 2026, 11:01AM. IDX information is provided exclusively for 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 is deemed reliable but not guaranteed. © 2026 OneKey® MLS. All rights reserved.

Advertising Broker: Derek Greene | The Greene Realty Group