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5 Beds
3 Baths
2,258 sqft

$829,999

24 William Avenue, Islip NY, 11751

Price per sqft$367.58
Built in2006
Property size2,258 sqft
Property typeResidential
Courtesy of Netter Real Estate Inc, Annie L. Bos Greene Listing Contact: 631-661-5100

Overview

Active

Listed Sep 16, 2026

Updated 26h ago

Welcome to this beautiful, move-in-ready 5-bedroom, 2 1/2 bath Colonial, quietly tucked away on a dead-end street in the Islip School District. With thoughtful updates, generous living space, and exceptional amenities, this home offers room for everyone and plenty of flexibility. The second floor features four bedrooms, including a spacious primary suite with a private en-suite bath, Jacuzzi tub, and glass-enclosed walk-in shower. A versatile fifth bedroom on the main level can serve as a first-floor primary, home office, playroom, or guest space. The large eat-in kitchen features a breakfast bar and opens into an expansive adjoining room with a beautiful gas fireplace, currently being used as the dining area. Sliding doors lead directly to the spectacular backyard, making entertaining effortless. Step outside to your own private oasis — professionally landscaped and fully fenced, with a stunning built-in outdoor kitchen featuring a grill, refrigerator, sink, and lift TV cabinet. It’s the perfect setting for summer entertaining! Additional highlights include a full finished basement with outside entrance, utilities and abundant storage, upstairs laundry, pull-down attic storage, two-zone heating, central air, natural gas, 200-amp electric, in-ground sprinklers, whole-house intercom, alarm system, ceiling fans in all bedrooms, and outdoor speakers. The 1 1/2 car detached garage includes an intercom and EV charger. Enjoy a small covered balcony off one of the upstairs bedrooms — a charming spot to step outside and relax. Ideally located near schools, parks, beaches, shopping, the LIRR, and major highways, this exceptional home combines privacy and convenience. Come experience this special home — the space, the privacy, and the incredible outdoor living are waiting for you!

$5,522/mo

Est. mortgage payment based on a $829,999 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
1051841

Interior Features

Bedrooms
5
Bathrooms
3
Fireplace
Yes
Cooling
Yes
Heating
Yes
Basement
Yes

Exterior Features

Lot Size
0.17 Acres

Other Property Details

Taxes
$16,435
Tax Frequency
Annually
Garage
Yes
View
Yes
55+/Senior Community
No

Listings courtesy of OneKey MLS as distributed by MLS GRID

All information deemed reliable but not guaranteed and should be independently verified. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) nor Irene Siconolfi shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Properties displayed may be listed or sold by various participants in the MLS.

Based on information submitted to the MLS GRID as of 4:30 AM UTC on 9/20/2026. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

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OneKey MLS. All rights reserved.

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