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Single family home for sale at 31 Underhill Ave, Oyster Bay, NY 11791 | MLS# 1025506 | Listing updated on 2026-10-06
Photo 1 of Single family home for sale at 31 Underhill Ave, Oyster Bay, NY 11791 | MLS# 1025506 | Listing updated on 2026-10-06
Photo 2 of Single family home for sale at 31 Underhill Ave, Oyster Bay, NY 11791 | MLS# 1025506 | Listing updated on 2026-10-06
Photo 3 of Single family home for sale at 31 Underhill Ave, Oyster Bay, NY 11791 | MLS# 1025506 | Listing updated on 2026-10-06
Photo 4 of Single family home for sale at 31 Underhill Ave, Oyster Bay, NY 11791 | MLS# 1025506 | Listing updated on 2026-10-06
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$1,988,000

Monthly Est:$9,895

  • Beds Icon5 Beds
  • Beds Icon
    4 Baths
  • Beds Icon2,700sqft

31 Underhill Ave, Oyster Bay, NY 11791

$9,895/moEst:

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  • Single Family Residence

  • Built in 2026

  • $-- HOA

  • 6,800 sqft lot

  • $736/sq.ft

Description

New luxury construction in Syosset.
Experience exceptional craftsmanship and modern luxury in this stunning new construction home, thoughtfully designed with today’s lifestyle in mind.
Offering five spacious bedrooms and four full bathrooms. This home seamlessly blends elegant finishes with functional living space.
The main level features a desirable first floor bedroom and full bath, ideal for guests, extended family, or private home office.
The heart of the home is a chef inspired gourmet kitchen beautifully appointed with top-of-the-line appliances, custom cabinetry, designer lighting and an open layout perfect for entertaining.
The sun filled living and dining area f
low effortlessly together with convenient access to the attached garage
Upstairs retreat to the luxurious primary suite featuring a spacious walk-in closet and a spa like bath, complete with a soaking tub, oversized walk-in shower and premium finishes.
A junior en-suite offers its own private full bath with a walk-in shower while two additional generously sized bedrooms share a beautiful appointed full bath.
A conveniently located second floor laundry room completes the upper level.
Every detail has been carefully selected from the designer lighting and elegant fixtures to the high-quality craftsmanship found throughout.
Simply unpack, add your personal style and enjoy effortless luxury.
Perfectly situated within the Syosset school district this exceptional home is just minutes from major highways, the Syosset library, parks, shopping, dining and everything the community has to offer.
A rare opportunity to own a brand new luxury home in one of Long Island’s most sought after neighborhoods.
This is truly one you don’t want to miss!

  • Houzeo last checked: 4 minutes ago
  • Listing updated: October 6, 2026 at 5:09 pm
  • Listing Provided by: Debra McSheffrey Kiehn (516) 647-6749 | Signature Premier Properties (516) 921-1400
  • Source: OneKey MLS-NY | MLS#: 1025506 OneKey MLS-NY

Property Details

  • Status

    Active

  • Type

    Single Family Residence

  • No. of Stories

    -

  • County

    Nassau County

  • City

    Oyster Bay

  • Neighborhood

    --

  • Year Built

    2026

  • HOA Fees

    -

  • Finished Area

    2,700 sqft

  • Lot Size

    6,800 sqft lot

  • Basement Area

    - sqft

  • MLS Name

    OneKey MLS

  • MLS Number

    1025506

  • MLS Status

    Active

  • Days on Market

    84

  • Cumulative Days on Market

    82

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Location

Facts & Features

Rooms

  • Bedrooms & bathrooms

    Bedrooms: 5

    Bathrooms: 4

Interior

  • Flooring

    Hardwood, Tile

  • Heating

    Natural Gas

  • Appliances

    Dishwasher, Dryer, Refrigerator, Stainless Steel Appliance(s), Tankless Water Heater, Washer

  • Cooling

    Central Air

  • Interior Features

    Chefs Kitchen, Crown Molding, Double Vanity, Granite Counters, Kitchen Island, Open Floorplan, Primary Bathroom, Recessed Lighting

  • Sewer

    Public Sewer

Construction

  • Year Built

    Year Built: 2026

  • Home type

    Single Family Residence

  • Construction Materials

    Frame

  • Property Condition

    New Construction

  • Architectural Style

    Colonial

Utilities & Energy

  • Water Source

    Public

  • Basement

    Full

  • Parking Features

    Driveway, Electric Vehicle Charging Station(s)

  • Laundry Features

    In Basement

  • Utilities

    Electricity Connected, Natural Gas Connected, Sewer Connected, Water Connected

Other Features

  • Patio And Porch Features

    Patio

  • Lot Features

    Back Yard, Front Yard, Level, Near School, Near Shops

Price History

DateEventPrice

09/25/2026

Source: mls_logoOneKey MLS-NY #KEY1025506

Price Decreased

$1,988,000 -4.88%

$736/sqft

07/16/2026

Source: mls_logoOneKey MLS-NY #KEY1025506

Listed for Sale

$2,090,000

$774/sqft

07/16/2026

Source: mls_logoOneKey MLS-NY #KEY1025506

Price Increased

$2,090,000 +161.58%

$774/sqft

11/21/2024

Source: mls_logoOneKey MLS-NY #KEYL3563300

Sold

$799,000

$296/sqft

Nearby Homes

Based on information from OneKey MLS, through Oct 08, 2026, 11:46PM. 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