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Property 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 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!
Full Property Details
Full Property Details for 31 Underhill Ave
General
- Price: $2,090,000
- Status: Active
- Type: Single Family
- Source: Long_Island
- MLS ID: 1025506
- Updated: 7/16/2026
- Added to Site: 43 day(s) ago
Interior
- Number of Rooms: 9
- Interior Features: Chefs Kitchen, Crown Molding, Double Vanity, Granite Counters, Kitchen Island, Open Floorplan, Primary Bathroom, Recessed Lighting
- Appliances: Dishwasher, Dryer, Refrigerator, Stainless Steel Appliance(s), Tankless Water Heater, Washer
- Laundry Facilities: Yes
- Flooring: Hardwood, Tile
Rooms
Bathrooms
- Total Bathrooms: 4
- Full Bathrooms: 4
Bedrooms
- Total Bedrooms: 5
Other Rooms
- Laundry: In Basement
Exterior
- Porch/Patio/Deck: Patio
Parking
- Garage: Yes
- Garage Spaces: 1
- Parking Features: Driveway, Electric Vehicle Charging Station(s)
Location
- County: Nassau County
School Information
- High School District: Syosset
- Elementary School: Willits Elementary School
- Middle School: H B Thompson Middle School
- High School: Syosset Senior High School
Heating & Cooling
- Central air: Yes
- Cooling Type: Central Air
- Heating Type: Natural Gas
- Heating Zones: 2
Utilities
- Sewer: Public Sewer
- Water: Public
- Utility Description: Electricity Connected, Natural Gas Connected, Sewer Connected, Water Connected
Structural Information
- Architectural Style: Colonial
- Detached/Attached: Detached
- Construction: Frame
- Basement: Yes
- Basement Desc.: Full Basement
- Building Size: 2700
- Square Feet: 2,700
- Sq. Ft. Source: Plans
- Year Built: 2026
Lot Features
- Lot Size (Acres): 0.1561
- Lot Size (Sq. Ft.): 6,800
- Lot Dimensions: 77 x 101
- Fence: Yes
- Lot Features: Back Yard, Front Yard, Level, Near School, Near Shops
- Fencing (Description): Fenced
Disclosures and Reports
- Special Conditions: None
- Property ID: 2489-15-081-00-0003-0
Listed by Signature Premier Properties
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Schools
Schools serving 31 Underhill Ave
School District:Syosset Central School District
| Name | Grades | Distance |
|---|---|---|
Willits Elementary School 99 Nana Place, Syosset, NY 11791 | K-5 | 0.4 mi |
H B Thompson Middle School 98 Ann Dr, Syosset, NY 11791 | 6-8 | 0.5 mi |
Syosset Senior High School 70 South Woods Road, Syosset, NY 11791 | 9-12 | 1.9 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 31 Underhill Ave
Date
Details
Price
Change
Source
7/16/2026
Listed
$2,090,000
161.58%
MLS
9/05/2024
Sold
$799,000
—
Public Record
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Tax History
Tax History for 31 Underhill Ave
Year
Property Taxes
Change
Tax Assessment
Change
2025
$11,054
—
$484
2%
2025
$11,054
352%
$476
-5%
2024
$2,448
-71%
$500
—
2023
$8,390
23%
$500
—
2022
$6,846
-4%
$500
—
2021
$7,102
26%
$500
5%
2020
$5,629
-1%
$477
-12%
2018
$5,658
1%
$545
7%
2019
$5,629
-2%
$511
-12%
2016
$5,773
—
$579
-6%
2016
$5,773
-2%
$613
-10%
2016
$5,869
-11%
$681
—
2014
$6,559
—
$681
-28%
2014
$6,559
—
$945
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 31 Underhill Ave
31 Underhill Avenue, Syosset, NY 11791 (MLS# 1025506) is a Single Family property with 5 bedrooms and 4 full bathrooms. 31 Underhill Avenue is currently listed for $2,090,000 and was received on July 16, 2026. Want to learn more about 31 Underhill Avenue? Do you have questions about finding other Single Family real estate for sale in Syosset? You can browse all Syosset real estate or contact a Coldwell Banker agent to request more information.
