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$550,000 Just Listed

  • For Sale
  • Active
  • Single Family
  • 3 Beds
  • 2 Full Baths
  • 1,222 Sq. Ft.
  • 1 Car Garage
  • Updated 7 hours ago
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Welcome to this inviting 3-bedroom, 2-bath ranch in Ronkonkoma, offering a thoughtful combination of recent improvements, everyday comfort, and practical living spaces. The beautifully renovated kitchen, updated within the past two years, serves as a welcoming centerpiece of the home, offering a refreshed space for relaxing, cooking and gathering. The convenient ranch-style layout is complemented by a full basement, providing additional space and flexibility with a separate entrance . Notable improvements include a roof replaced in 2019, a 200-amp electrical panel, and an oil burner and hot water tank approximately five years old. Four-zone oil-fired baseboard heating and ductless air conditioning units installed approximately six years ago provide options for year-round temperature control. Outside, a five-zone in-ground sprinkler system services both the front and rear yards. Additional features include kitchen appliances approximately six years old and a washer and dryer replaced approximately three years ago. Conveniently situated just minutes from the Ronkonkoma Long Island Rail Road station, this property offers access to regional transportation. With its combination of recent updates, functional features, and convenient location, this ranch presents an opportunity to enjoy all that the property has to offer.

Full Property Details for 12 Mountain St

General

  • Price: $550,000
  • Taxes: $12,829
  • Status: Active
  • Type: Single Family
  • Source: Long_Island
  • MLS ID: 1061438
  • Updated: Today (10/12/2026)
  • Added to Site: Today

Interior

  • Number of Rooms: 9
  • Interior Features: First Floor Bedroom, First Floor Full Bath, Ceiling Fan(s), Recessed Lighting, Washer/Dryer Hookup
  • Appliances: Dishwasher, Electric Oven, Microwave, Refrigerator
  • Laundry Facilities: Yes
  • Flooring: Carpet, Hardwood

Rooms

Bathrooms

  • Total Bathrooms: 2
  • Full Bathrooms: 2

Bedrooms

  • Total Bedrooms: 3

Other Rooms

  • Laundry: Electric Dryer Hookup, In Basement, Washer Hookup

Parking

  • Garage: Yes
  • Garage Spaces: 1
  • Total Spaces: 7
  • Parking Features: Driveway, Garage

Location

  • County: Suffolk County
  • Cross Streets: Hill St.

School Information

  • High School District: Middle Country
  • Elementary School: Holbrook Road School
  • Middle School: Dawnwood Middle School
  • High School: Centereach High School

Heating & Cooling

  • Cooling Type: Wall/Window Unit(s)
  • Heating Type: Baseboard, Forced Air, Oil
  • Heating Zones: 4

Utilities

  • Sewer: Cesspool
  • Water: Public
  • Utility Description: Cable Available, Cable Connected, Electricity Available, Electricity Connected, Water Available, Water Connected

Structural Information

  • Architectural Style: Ranch
  • Detached/Attached: Detached
  • Construction: Frame
  • Basement: Yes
  • Basement Desc.: Finished, Full Basement
  • Building Size: 1222
  • Square Feet: 1,222
  • Sq. Ft. Source: Other
  • Year Built: 1965

Lot Features

  • Lot Size (Acres): 0.25
  • Lot Size (Sq. Ft.): 10,890
  • Fence: Yes
  • Fencing (Description): Fenced, Full, Perimeter, Vinyl

Financial Considerations

  • Tax Amount: $12,829.42

Disclosures and Reports

  • Special Conditions: None
  • Inclusions: Washer, Dryer
  • Property ID: 0200-598-00-02-00-018-000

Listed by OverSouth LLC

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Listing agent

— 12 Mountain St —

  • OverSouth LLC

631-902-0020

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

Get Pre-Approved

Schools serving 12 Mountain St

School District:Middle Country Central School District
NameGradesDistance
Holbrook Road School
170 Holbrook Road, Centereach, NY 11720
1-50.3 mi
Unity Drive Kindergarten Pre K Center
11 Unity Drive, Centereach, NY 11720
PK-K1.7 mi
Dawnwood Middle School
10 43rd Street, Centereach, NY 11720
6-82.3 mi
Centereach High School
14 43rd Street, Centereach, NY 11720
9-122.3 mi
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 12 Mountain St Get Price Alerts and Save Property

Date
Details
Price
Change
Source
10/12/2026
Listed
$550,000
76.28%
MLS
8/26/2015
Sold
$312,000
—
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 12 Mountain St

Year
Property Taxes
Change
Tax Assessment
Change
2024
$11,995
100%
$2,700
—
2020
100%
$2,700
—
2022
-100%
$2,700
—
2016
$9,662
-13%
$2,700
—
2020
$11,072
2%
$2,700
—
2018
$10,851
3%
$2,700
—
2017
$10,509
8%
$2,700
8%
2016
$9,719
14%
$2,500
—
2015
$8,525
2%
$2,500
—
2015
$8,355
3%
$2,500
—
2014
$8,112
3%
$2,500
—
2013
$7,880
—
$2,500
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Estimate the Cost for 12 Mountain St

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Down Payment
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*These costs are estimates, and the interest rates assume exceptional credit standing.

Listed by OverSouth LLC

12 Mountain Street, Ronkonkoma, NY 11779 (MLS# 1061438) is a Single Family property with 3 bedrooms and 2 full bathrooms. 12 Mountain Street is currently listed for $550,000 and was received on October 12, 2026. Want to learn more about 12 Mountain 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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