Single Family
40 Prospect Avenue
Active · Oyster Bay · Nassau County, NY 11579
- Bedrooms
- 4 Beds
- Bathrooms
- 3 Baths
- Year built
- 1910
- Est. monthly taxes
- $2,471.42
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About this home
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!
Listing snapshot
- Days on site
- 30 days
- Listed on MLS
- Sep 28, 2026
- Full baths
- 3
- Half baths
- 0
- Annual property tax (MLS)
- $29,657
- Tax year
- 2026
- Area source (MLS)
- Plans
- Listing brokerage
- Douglas Elliman Real Estate
- MLS ID
- KEY1049376
- Last updated
- Oct 2, 2026
General features
- Property type
- Single Family
- Property subtype
- Single Family Residence
- Year built
- 1910
- Garage
- Yes
- Garage spaces
- 2
- Parking
- Driveway, Garage
- Water source
- Public
- Sewer
- Cesspool
- Utilities
- Electricity Connected, Natural Gas Connected
Interior features
- Basement
- Full, Partially Finished, Walk-Out Access
- Heating
- Forced Air
- Cooling
- Central Air, Wall/Window Unit(s)
- Interior
- First Floor Full Bath, Built-in Features, Eat-in Kitchen, Formal Dining, Natural Woodwork, Original Details
- Appliances
- Gas Range, Refrigerator, Gas Water Heater
- Flooring
- Hardwood
- Fireplace
- Yes
- Fireplaces
- 2
Exterior features
- Architectural style
- Colonial
- Construction materials
- Block, Frame
- Exterior
- Garden
- Private pool
- No
Schools (MLS)
- Elementary school
- Sea Cliff Elementary School
- Elementary school district
- North Shore
- Middle school
- North Shore Middle School
- Middle school district
- North Shore
- High school
- North Shore Senior High School
- High school district
- North Shore
School information is provided by the MLS. Confirm attendance eligibility with the school district.
Recent activity
- Listing updated from MLS
- First seen on this site
- MLS status changed
Location
Estimate monthly payment
Estimated monthly principal & interest—
Monthly property taxNot provided
Monthly association / maintenance feesNot provided
Estimated monthly total of entered costs—
Listing data is supplied by the MLS and may change without notice.