9 Underhill Ave, Syosset, NY 11791
Property image
Property image
OFF MARKET

9 Underhill Ave
Syosset, NY 11791

Locust Grove
  • 4 Beds
  • 1.5 Baths
  • 1,460 sqft

$948,300

Trulia Estimate
as of Aug 10, 2026
Est. Refi. Payment $5,997/mo*

$948,300

Trulia Estimate
as of Aug 10, 2026
Est. Refi. Payment $5,997/mo*
4 Beds
1.5 Baths
1,460 sqft

Local Information

  • Map ViewExplore the area around 9 Underhill Ave.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1950
Living Area
1,460 sqft
Price/Sqft
$650
Parking
Garage

About this House

4 bedroom expanded cape. 1 mile to LIRR and Syosset library. 400 sq ft cook"s kitchen/dining room, 11 foot island w/storage & display.2 dw, warming drawer. Food motif accents. Pella windows/door. Hardwood floors. Formal living room. Master on main. Full bath with 21' deep tub . 2nd floor-2 bed. 1/2 bath, new carpet. Finished Basement w/wet bar, laundry, storage, workbench. new carpet. Access from basement to garage.
9 Underhill Ave, Syosset, NY 11791 is a 4 bedroom, 2 bathroom, 1,460 sqft single-family home in Locust Grove, built in 1950. It last sold for $600,000 on Feb 19, 2020. It is currently off market. The Trulia Estimate is $948,300, with a rent estimate of $5,400/month.

Home Details for 9 Underhill Ave

Interior Features

Heating & Cooling
Heating: OtherCooling System: CentralHeating Fuel: Other
Interior Details
Number of Rooms: 6Types of Rooms: Dining Room
Appliances & Utilities
DishwasherDryerRefrigerator

Property Information

Year Built
Year Built: 1950
Property Type / Style
Property Type: Single Family HomeArchitecture: Cape Cod

Exterior Features

Exterior Home Features
Exterior: Other
Pool
Pool
Parking & Garage
GarageParking: Garage

Community

Units in Building: 1

Lot Information

Lot Area: 6176 sqft

Price History for 9 Underhill Ave

DatePriceEventSource
02/19/2020$600,000Sold
OneKey® MLS as distributed by MLS GRID #L3151195
10/11/2019$630,888PriceChange
Agent Provided
09/09/2019$668,000PriceChange
Agent Provided
08/23/2019$688,000PriceChange
Agent Provided
07/24/2019$700,000Listed For SaleAgent Provided
01/12/2000$290,000Sold
N/A

Market trends in Syosset

Last updated June 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
62
8
MoM
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Property Tax and Assessment

Year2024
Tax
Assessment$623,000
Home facts updated by county records

Comparable Sales for 9 Underhill Ave

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
0.04
Single-Family Home
$995,000
08/18/25
4
2
1,603
0.12
Single-Family Home
$800,000
02/11/26
3
2
1,032
0.15
Single-Family Home
$900,000
12/01/25
3
2
1,032
0.24
Single-Family Home
$1,320,000
07/06/26
4
2
1,913
0.36
Single-Family Home
$839,000
08/20/25
5
4
3,127
0.38
Single-Family Home
$860,000
03/10/26
3
1.5
1,356
0.49
Single-Family Home
$995,000
05/15/26
4
2
1,618
0.12
Single-Family Home
$1,238,888
11/11/25
5
3
2,087
0.36
Single-Family Home
$970,000
02/27/26
4
2
1,796
0.40
Single-Family Home
$890,000
10/07/25
3
2
1,540

Nearby homes

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Assigned Schools

These are the assigned schools for 9 Underhill Ave.
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

Neighborhood stats provided by third party data sources.

LGBTQ Local Legal Protections

Apartments for Rent

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Homes for sale near 9 Underhill Ave

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Off Market Homes Near 9 Underhill Ave

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Frequently asked questions about 9 Underhill Ave

  • What is 9 Underhill Ave estimated to be worth?
    Trulia's estimated value for 9 Underhill Ave in Syosset, NY is $948,300.
  • What is the price history for 9 Underhill Ave?
    9 Underhill Ave in Syosset, NY last sold for $600,000 in February 2020.
  • Is Syosset a buyer's or seller's market?
    Syosset is currently a seller's market, based on recent for-sale activity.
  • What are the closest schools to 9 Underhill Ave?
    The closest schools to 9 Underhill Ave in Syosset, NY are H B Thompson Middle School (rated 8/10), Syosset Senior High School (rated 10/10), Willits Elementary School (rated 7/10).
  • Does 9 Underhill Ave have air conditioning?
    Yes, 9 Underhill Ave in Syosset, NY has air conditioning.
  • Does 9 Underhill Ave have a pool?
    Yes, 9 Underhill Ave in Syosset, NY has a pool.