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429 Ontario Street, 
Ronkonkoma, NY 11779

$719,999

3

Beds

2

Baths

2,300

Sq Ft

Single Family

Active

Listed by

Khuram Goondall

Signature Premier Properties

Last updated:

September 14, 2026, 11:14 AM

MLS#

1040582

Source:

OneKey MLS

About This Home

429 Ontario Street

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.

Home Facts

Single Family

2 Baths

3 Bedrooms

Built in 1965

Price Summary

719,999

$313 per Sq. Ft.

MLS #:

1040582

Last Updated:

September 14, 2026, 11:14 AM

Added:

25 day(s) ago

Rooms & Interior

Bedrooms

Total Bedrooms:

3

Bathrooms

Total Bathrooms:

2

Full Bathrooms:

2

Interior

Living Area:

2,300 Sq. Ft.

Structure

Structure

Architectural Style:

Ranch

Building Area:

2,300 Sq. Ft.

Year Built:

1965

Lot

Lot Size (Sq. Ft):

13,939

Finances & Disclosures

Finances

Price:

$719,999

Price per Sq. Ft:

$313 per Sq. Ft.

Source:OneKey MLS
Copyright 2026 OneKey MLS. All rights reserved. Listings courtesy of OneKey MLS as distributed by MLS GRID . OneKey MLS provides content displayed here (“provided content”) on an “as is” basis and makes no representations or warranties regarding the provided content, including, but not limited to those of non-infringement, timeliness, accuracy, or completeness. Individuals and companies using information presented are responsible for verification and validation of information they utilize and present to their customers and clients. OneKey MLS will not be liable for any damage or loss resulting from use of the provided content or the products available through Portals, IDX, VOW, and/or Syndication. Recipients of this information shall not resell, redistribute, reproduce, modify, or otherwise copy any portion thereof without the expressed written consent of OneKey MLS.

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.