Prevu by reAlpha
BuySellBlogBrowse Listings

31 Underhill AvenueSyosset, NY 11791

For Sale

$2,090,000

Smart Buyer Rebate $20,900

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 flow 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!

Listed by Debra McSheffrey Kiehn

·

Signature Premier Properties

·

516-647-6749

Last updated July 28, 2026

·

Source: OneKey #1025506

Listing Facts

  • TypeSingle-family
  • NeighborhoodSyosset
  • Bedrooms5
  • Bathrooms4
  • Days on Prevu15
  • Size2,700 sqft
  • Price per sqft$774

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Washer/Dryer
  • Air Conditioning
  • Parking

Location

Mortgage Calculator

Listing History

07/16/2026
Listed by Signature Premier Properties
$2,090,000

Property Details for 31 Underhill Avenue

Exterior

Construction

  • Property Condition: New Construction
  • Year Built: 2026
  • Architectural Style: Colonial
  • Construction Materials: Frame

Features

  • Fencing: Fenced
  • Patio And Porch Features: Patio

Measurements

  • Building Area Total: 2,700
  • Building Area Units: Square Feet
  • Lot Features: Back Yard, Front Yard, Level, Near School, Near Shops
  • Lot Size Acres: 0.15
  • Lot Size Dimensions: 77,101
  • Lot Size Square Feet: 6,800

Financial

Taxes

  • Parcel Number: 2489-15-081-00-0003-0
  • Tax Year: 2026

Interior

Features

  • Appliances: Dishwasher, Dryer, Refrigerator, Stainless Steel Appliance(s), Tankless Water Heater, Washer
  • Flooring: Hardwood, Tile
  • Interior Features: Chefs Kitchen, Crown Molding, Double Vanity, Granite Counters, Kitchen Island, Open Floorplan, Primary Bathroom, Recessed Lighting

Measurements

  • Living Area: 2,700
  • Living Area Source: Plans

Rooms

  • Basement: Full
  • Has Basement: Yes
  • Bathrooms Full: 4
  • Bathrooms Total Integer: 4
  • Bedrooms Total: 5
  • Rooms Total: 9

Parking

Parking

  • Garage Spaces: 1
  • Garage: Yes
  • Parking Features: Driveway, Electric Vehicle Charging Station(s)

Schools

Elementary School

  • Elementary School: Willits Elementary School
  • Elementary School District: Syosset

High School

  • High School: Syosset Senior High School
  • High School District: Syosset

Middle or Junior School

  • Middle Or Junior School: H B Thompson Middle School
  • Middle Or Junior School District: Syosset

Utilities

Equipment

  • Cooling: Central Air
  • Heating: Natural Gas
  • Laundry Features: In Basement
  • Sewer: Public Sewer
  • Utilities: Electricity Connected, Natural Gas Connected, Sewer Connected, Water Connected
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 5 bedrooms and 4 bathrooms in this single-family home at 31 Underhill Avenue.

What schools are nearby to 31 Underhill Avenue?

Nearby schools include the Willits Elementary School, H B Thompson Middle School, and Syosset Senior High School.

Does this single-family home have parking?

Yes, there is 1 parking space available for 31 Underhill Avenue.

How does 31 Underhill Avenue compare to other single-family homes in Syosset?

This single-family home is listed 29% above the average price for single-family homes in Syosset and has been on the market for 56 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 2,700 sqft.

31 Underhill Avenue is a 5-bedroom, 4-bath single-family home for sale in Syosset NY 11791. Available on Prevu for 15 days at $2,090,000. This property features 2,700 square feet of living space, located in Syosset. The median listing price for single-family homes in this area is $1,299,000. Nearby schools include Willits Elementary School, H B Thompson Middle School, and Syosset Senior High School. The home offers private outdoor space, dishwasher, air conditioning, parking, and washer/dryer. Explore more single-family home listings in Nassau County.

The data relating to real estate for sale on this website comes in part from the IDX Program of OneKey™ MLS. The source of the displayed data is either the property owner or public record provided by non-governmental third parties. It is believed to be reliable but not guaranteed. This information is provided exclusively for consumers’ personal, non-commercial use. Information Copyright 2026, OneKey™ MLS. All Rights Reserved.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.