426 Ontario Street
Ronkonkoma, NY 11779
- 4 beds
- 2 baths
- 1,706 sqft
- 6,098 sqft lot
- $381 per sqft
- 1969 build
- – on site
Welcome to this thoughtfully upgraded and beautifully maintained home offering a perfect blend of comfort, function, and style. From the moment you step inside, you’ll be greeted by soaring high ceilings and rich hardwood floors that create a warm and airy atmosphere. The heart of the home—its custom kitchen—boasts high-end finishes including a built-in wine fridge, a sleek pot filler, and a convenient cup rinser, all designed with both everyday living and entertaining in mind. The main level features open-concept living and dining spaces filled with natural light and modern touches throughout. Downstairs, a spacious lower level offers incredible flexibility—perfect for a guest area, recreation space, or creative workspace to fit your lifestyle. Step outside into an entertainer’s dream: a fully equipped outdoor kitchen with stainless steel appliances, surrounded by custom pavers and seating areas ideal for hosting gatherings or enjoying quiet moments in the fresh air. This home offers comfort, versatility, and luxurious upgrades inside and out.
Last checked:
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Checking…
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Last updated May 5, 2025
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MLS# 857668 —
Upcoming Open Houses
-
Thursday, 5/8
5pm-6:30pm -
Saturday, 5/10
12:30pm-2pm
The Building
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Year Built:1969
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Basement:false
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Architectural Style:Hi Ranch
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Building Area Units:Square Feet
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Building Area Total:1704
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Attic:Partial
Interior
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Living Area:1706
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Total Rooms:9
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Interior Features:Cathedral Ceiling(s), Eat-in Kitchen, Formal Dining, Open Floorplan, Open Kitchen, Quartz/Quartzite Counters, Recessed Lighting
Financial & Terms
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Lease Considered:false
The Property
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Lot Size Acres:0.14
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Parcel Number:0500-032-00-02-00-077-000
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Property Type:Residential
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Property Subtype:Single Family Residence
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Lot Size SqFt:6,098 Sqft
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Property Attached:false
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Waterfront:false
Listing Agent
- Contact info:
- Agent phone:
- (631) 245-0777
- Office phone:
- (646) 480-7665
Taxes
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Tax Year:2025
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Tax Source:Municipality
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Tax Annual Amount:11037
Beds
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Total Bedrooms:4
Baths
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Full Baths:2
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Total Baths:2
The Listing
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Special Listing Conditions:None
Heating & Cooling
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Heating:Oil
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Cooling:Central Air, Ductless
Utilities
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Sewer:Cesspool
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Utilities:See Remarks
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Water Source:Public
Appliances
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Appliances:Dryer, Electric Cooktop, Electric Oven, Electric Range, Refrigerator, Stainless Steel Appliance(s), Washer, Gas Water Heater, Wine Refrigerator
Schools
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High School:Connetquot High School
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Elementary School:Edith L Slocum Elementary School
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High School District:Connetquot
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Middle School:Ronkonkoma Middle School
The Community
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Association:false
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Senior Community:false
Parking
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Garage:true
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Garage Spaces:1
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Carport:false
Monthly cost estimate

Asking price
$649,999
Expense | Monthly cost |
---|---|
Mortgage
This calculator is intended for planning and education purposes only. It relies on assumptions and information provided by you regarding your goals, expectations and financial situation, and should not be used as your sole source of information. The output of the tool is not a loan offer or solicitation, nor is it financial or legal advice. |
$3,480
|
Taxes | $919 |
Insurance | $178 |
Utilities | $453 See report |
Total | $5,030/mo.* |
*This is an estimate |
Walk Score®
Provided by WalkScore® Inc.
Walk Score is the most well-known measure of walkability for any address. It is based on the distance to a variety of nearby services and pedestrian friendliness. Walk Scores range from 0 (Car-Dependent) to 100 (Walker’s Paradise).
Bike Score®
Provided by WalkScore® Inc.
Bike Score evaluates a location's bikeability. It is calculated by measuring bike infrastructure, hills, destinations and road connectivity, and the number of bike commuters. Bike Scores range from 0 (Somewhat Bikeable) to 100 (Biker’s Paradise).
Soundscore™
Provided by HowLoud
Soundscore is an overall score that accounts for traffic, airport activity, and local sources. A Soundscore rating is a number between 50 (very loud) and 100 (very quiet).
Air Pollution Index
Provided by ClearlyEnergy
The air pollution index is calculated by county or urban area using the past three years data. The index ranks the county or urban area on a scale of 0 (best) - 100 (worst) across the United Sates.
Sale history
Date | Event | Source | Price | % Change |
---|---|---|---|---|
5/5/25
May 5, 2025
|
Listed / Active | ONEKEY | $649,999 | 14.0% (6.8% / YR) |
4/11/23
Apr 11, 2023
|
ONEKEY | $570,000 |

63% of nearby similar homes sold for over asking price
Similar homes that sold in bidding wars went $40k above asking price on average, but some went as high as $114k over asking price.