For sale

$799,000

117 Union Avenue, Islip, NY 11751

3beds

2,415sqft

Single Family Residence, Residential

Built in 1877

0.34 Acres Lot

$-- Zestimate^®

$331/sqft

$-- HOA

What's special

This home offers the rare combination of historic elegance and modern convenience & perfect for buyers seeking character without compromise. This seamless blend of vintage character and modern design creates a warm yet sophisticated environment, ideal for those who appreciate history but crave convenience. Inside you'll find open concept layout sleek finishes, state of the art amenities, and abundant natural light. The kitchen boasts quartz countertops, stainless steel appliances and beautiful cabinetry. Classic trim and original architectural accents seamlessly blend with today's style.

11 days

2,441

182

Tour with a local agent

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 3
Bathrooms: 2
Full bathrooms: 1
1/2 bathrooms: 1

Bedroom 1

Description: Extra large primary bedroom with breathtaking seating area.
Level: Second

Den

Description: Large, but cozy step down den.
Level: First

Dining room

Description: Bright and sunny Dining room. Large enough for everyone.
Level: First

Kitchen

Description: Stainless appliances, quartz countertops large island with room for four or more.
Level: First

Living room

Description: large open living room
Level: First

Heating

Hot Water

Cooling

Ductless, Electric

Appliances

Included: Convection Oven, Dishwasher, Dryer, ENERGY STAR Qualified Appliances, Exhaust Fan, Freezer, Gas Cooktop, Gas Oven, Gas Range, Microwave, Refrigerator, Stainless Steel Appliance(s), Tankless Water Heater, Washer
Laundry: Washer/Dryer Hookup, Inside

Features

Beamed Ceilings, Ceiling Fan(s), Chandelier, Crown Molding, Eat-in Kitchen, Formal Dining, Kitchen Island, Open Kitchen, Quartz/Quartzite Counters, Recessed Lighting, Storage, Walk Through Kitchen
Basement: Bilco Door(s),Unfinished
Attic: Pull Stairs,Storage,Unfinished

Interior area

Total structure area: 2,767
Total interior livable area: 2,415 sqft

Property

Parking

Total spaces: 2
Parking features: Detached, Driveway, Garage Door Opener, Off Street, Private
Garage spaces: 2
Has uncovered spaces: Yes

Features

Exterior features: Garden
Fencing: Back Yard,Fenced,Full

Lot

Size: 0.34 Acres
Features: Back Yard, Cleared, Front Yard, Garden, Landscaped, Level, Private, Sprinklers In Front, Sprinklers In Rear

Details

Parcel number: 0500396000500003000
Special conditions: None

Construction

Type & style

Home type: SingleFamily
Architectural style: Colonial
Property subtype: Single Family Residence, Residential

Materials

Fiberglass Insulation

Condition

Year built: 1877

Utilities & green energy

Sewer: Public Sewer
Water: Public
Utilities for property: Cable Available, Electricity Connected, Sewer Connected, Trash Collection Public, Water Available

Community & HOA

HOA

Has HOA: No

Location

Region: Islip

Financial & listing details

Price per square foot: $331/sqft
Tax assessed value: $43,000
Annual tax amount: $14,889
Date on market: 12/11/2025
Cumulative days on market: 6 days
Listing agreement: Exclusive Right To Sell
Electric utility on property: Yes

Estimated market value

Not available

Estimated sales range

Not available

Price history

Date	Event	Price
12/11/2025	Listed for sale	$799,000+79.1%$331/sqft
Source: OneKey® MLS #941675 Report a problem
10/28/2016	Sold	$446,000+112.4%$185/sqft
Source: Public Record Report a problem
9/19/2016	Sold	$210,000$87/sqft
Source: Public Record Report a problem
6/14/2016	Sold	$210,000$87/sqft
Source: OneKey® MLS #L2818700 Report a problem

Public tax history

Year	Property taxes	Tax assessment
2024	--	$43,000
2023	--	$43,000
2022	--	$43,000

Find assessor info on the county website

BuyAbility℠ payment

Estimated monthly payment

All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.

HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.

Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.

See how much you could borrow to make a competitive offer.

Get pre-qualified