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$719,999 Just Listed

  • For Sale
  • Active
  • Single Family
  • 3 Beds
  • 2 Full Baths
  • 2,300 Sq. Ft.
  • Updated 19 hours ago

Next open house:

Open House: 1:00 PM - 3:00 PM

Saturday 8/29 1:00 PM - 3:00 PM

429 Ontario Street,Ronkonkoma, NY 11779

429 Ontario StreetRonkonkomaNY11779

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Join us at 429 Ontario Street on:

  • Open House: 1:00 PM - 3:00 PM

    Sunday 8/30 1:00 PM - 3:00 PM

    429 Ontario Street,Ronkonkoma, NY 11779
    429 Ontario StreetRonkonkomaNY11779
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Completely Renovated In 2022 ~ 3 Bedroom (Possible 5BR), 2 Full Bath Ranch Fully Fenced with PVC Fencing In Connetquot School District. Eat In Kitchen with Skylight, Soft Close Cabinets, Samsung Stainless Steel Appliances And Quartz Countertops. Hi Hats, Hardwood Floors Thru Out Main Level, Full Main Bath with Skylight. Legal With CO Full Basement with Separate Side Above Ground Entrance Features Egress Window, Large Rec Room, and Den. Roof, Siding, Windows, Boiler, Oil Tank, CAC And Driveway, All New Plumbing And Electric with Electrical Underwriters Cert All On .32 Acres.. Square Footage Includes Legally Finished Basement. Beautifully gut-renovated to the studs in 2022, this exceptional property features extensive updates including new electrical, plumbing, roof, gutters, windows, siding, and more. The expansive bi-level backyard is an outdoor paradise, featuring hundreds of square feet of custom paver work, custom stone retaining walls and railings, over 6,000 square feet of concrete and stone hardscaping, professional landscaping, water-runoff drainage, outdoor enclosures, and a private basketball court. A rare combination of comprehensive renovation, quality craftsmanship, and exceptional outdoor living-truly move-in ready and designed for both everyday living and entertaining.

Full Property Details for 429 Ontario St

General

  • Price: $719,999
  • Taxes: $11,519
  • Status: Active
  • Type: Single Family
  • Source: Long_Island
  • MLS ID: 1040582
  • Updated: 8/27/2026
  • Added to Site: Today

Interior

  • Number of Rooms: 9
  • Interior Features: First Floor Bedroom, First Floor Full Bath, Ceiling Fan(s), Eat-in Kitchen, Kitchen Island, Quartz/Quartzite Counters, Washer/Dryer Hookup
  • Appliances: Dishwasher, Electric Range, Exhaust Fan, Microwave, Refrigerator, Stainless Steel Appliance(s), Tankless Water Heater
  • Laundry Facilities: Yes
  • Flooring: Ceramic Tile, Hardwood

Rooms

Bathrooms

  • Total Bathrooms: 2
  • Full Bathrooms: 2

Bedrooms

  • Total Bedrooms: 3

Other Rooms

  • Laundry: Electric Dryer Hookup, In Basement

Additional Information

  • Security/Safety: Security Lights, Security System, Smoke Detector(s), Video Cameras

Exterior

  • Exterior Features: Basketball Court, Lighting

Parking

  • Total Spaces: 8
  • Parking Features: Driveway

Location

  • County: Suffolk County
  • Cross Streets: Pine

School Information

  • High School District: Connetquot
  • Elementary School: Edith L Slocum Elementary School
  • Middle School: Ronkonkoma Middle School
  • High School: Connetquot High School

Heating & Cooling

  • Central air: Yes
  • Cooling Type: Central Air
  • Heating Type: Baseboard, ENERGY STAR Qualified Equipment, Hot Water, Oil
  • Heating Zones: 2

Utilities

  • Sewer: Cesspool
  • Water: Public
  • Utility Description: Electricity Connected, Trash Collection Public, Water Connected

Structural Information

  • Architectural Style: Ranch
  • Detached/Attached: Detached
  • Construction: Frame, Vinyl Siding
  • Basement: Yes
  • Basement Desc.: Finished, Full Basement
  • Windows: Skylight(s)
  • Building Size: 2300
  • Square Feet: 2,300
  • Sq. Ft. Source: Public Records
  • Year Built: 1965

Lot Features

  • Lot Size (Acres): 0.32
  • Lot Size (Sq. Ft.): 13,939
  • Fence: Yes
  • Lot Features: Back Yard, Front Yard, Near Public Transit, Near School, Near Shops, Paved
  • Fencing (Description): Back Yard

Financial Considerations

  • Tax Amount: $11,519.66

Disclosures and Reports

  • Special Conditions: None
  • Property ID: 0500-032-00-02-00-060-000

Listed by Signature Premier Properties

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Listing agent

— 429 Ontario St —

  • Signature Premier Properties

917-415-5764

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

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Schools serving 429 Ontario St

School District:Connetquot Central School District
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 429 Ontario St Get Price Alerts and Save Property

Date
Details
Price
Change
Source
8/27/2026
Listed
$719,999
260%
MLS
5/02/2022
Sold
$200,000
—
Public Record
Get Price Alerts and Save Property
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 for 429 Ontario St

Year
Property Taxes
Change
Tax Assessment
Change
2020
100%
$34,700
—
2022
-100%
$34,700
—
2016
$8,567
-9%
$34,700
—
2017
$9,373
—
$34,700
—
2016
$9,336
—
$34,700
—
2015
$9,323
1%
$34,700
—
2015
$9,234
—
$34,700
—
2014
$9,250
26%
$34,700
—
2013
$7,343
—
$34,700
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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Listed by Signature Premier Properties

429 Ontario Street, Ronkonkoma, NY 11779 (MLS# 1040582) is a Single Family property with 3 bedrooms and 2 full bathrooms. 429 Ontario Street is currently listed for $719,999 and was received on August 27, 2026. Want to learn more about 429 Ontario Street? Do you have questions about finding other Single Family real estate for sale in Ronkonkoma? You can browse all Ronkonkoma real estate or contact a Coldwell Banker agent to request more information.

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