Date
Details
Price
Change
Source
5/12/2026
Listed
$1,050,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
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Property Description
Tucked away at the end of a quiet cul-de-sac in the highly sought-after Mount Sinai School District, this exceptional Colonial offers privacy, space, and versatility on just under an acre bordering protected state-owned forest land. With no future development permitted beside the property, the setting provides a rare sense of seclusion and direct access to an expansive natural backdrop that extends far beyond the lot lines. Perched atop a hill, the property also enjoys scenic views stretching toward the Long Island Sound. Inside, this spacious 4-bedroom, 3.5-bath residence features an open and inviting layout designed for both everyday living and entertaining. The main level includes a huge living room filled with natural light, an eat-in kitchen with new refrigerator, dishwasher, and microwave, a formal dining room, and a library offering the perfect setting for a home office or reading retreat. The desirable first-floor primary suite includes a spa-like bathroom with a Jacuzzi tub, creating a comfortable and private sanctuary. A separate guest wing with its own entrance provides incredible flexibility for extended guests, creative workspace needs, or possible mother-daughter living with proper permits. Additional updates include select new cabinetry in the secondary kitchen area. The expansive unfinished basement features high ceilings and offers endless potential for future living space, including a recreation room, gym, dance studio, playroom, or media area. Outside, enjoy the peaceful surroundings, wooded privacy, and ample outdoor space ideal for entertaining, relaxing, or simply enjoying nature. Complete with a two-car garage and an unbeatable location near parks, beaches, shopping, dining, and major roadways, 3 Heidi Lane presents a rare opportunity to own a truly private retreat in Mount Sinai.
Full Property Details
Full Property Details for 3 Heidi Ln
General
- Price: $1,050,000
- Taxes: $23,930
- Status: Active
- Type: Single Family
- Source: Long_Island
- MLS ID: 997676
- Updated: 5/12/2026
- Added to Site: 18 day(s) ago
Interior
- Number of Rooms: 11
- Interior Features: First Floor Bedroom, First Floor Full Bath, Cathedral Ceiling(s), Ceiling Fan(s), Double Vanity, Eat-in Kitchen, Entrance Foyer, Formal Dining, High Ceilings, High Speed Internet, His and Hers Closets, In-Law Floorplan, Natural Woodwork, Open Floorplan, Pantry, Primary Bathroom, Master Downstairs, Recessed Lighting, Walk-In Closet(s), Washer/Dryer Hookup, Wired for Sound
- Fireplace: Yes
- Number of Fireplaces: 1
- Fireplace(s): Family Room, Wood Burning
- Appliances: Convection Oven, Cooktop, Dishwasher, Disposal, Dryer, Electric Oven, Electric Water Heater, ENERGY STAR Qualified Appliances, Exhaust Fan, Gas Cooktop, Gas Oven, Oven, Range, Refrigerator, Stainless Steel Appliance(s), Washer, Gas Water Heater, Wine Refrigerator
- Laundry Facilities: Yes
- Flooring: Ceramic Tile, Hardwood, Tile
Rooms
Bathrooms
- Total Bathrooms: 4
- Full Bathrooms: 3
- Half Bathrooms: 1
Bedrooms
- Total Bedrooms: 4
Other Rooms
- Laundry: Electric Dryer Hookup, Gas Dryer Hookup, In Basement, Inside, Laundry Room, Multiple Locations, Other
Additional Information
- Spa: Yes
Exterior
- Exterior Features: Garden, Mailbox, Rain Gutters
- Porch/Patio/Deck: Deck, Terrace
Parking
- Garage: Yes
- Garage Spaces: 2
- Parking Features: Driveway, Garage, Garage Door Opener
Location
- County: Suffolk County
- Direction Faces: South
School Information
- High School District: Mount Sinai
- Elementary School: Mt Sinai Elementary School
- Middle School: Mt Sinai Middle School
- High School: ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL
Heating & Cooling
- Central air: Yes
- Cooling Type: Central Air, Ductwork
- Heating Type: Natural Gas
- Heating Zones: 2
Utilities
- Sewer: Septic Tank
- Water: Public
- Utility Description: Cable Connected, Electricity Connected, Natural Gas Connected, Phone Available, Trash Collection Public, Water Connected
Structural Information
- Architectural Style: Colonial, Raised Ranch
- Detached/Attached: Detached
- Construction: Vinyl Siding
- Basement: Yes
- Basement Desc.: Full Basement
- Windows: Blinds, Skylight(s), Wood Frames
- Building Size: 3992
- Square Feet: 3,992
- Sq. Ft. Source: Public Records
- Year Built: 2001
Lot Features
- Property View: Neighborhood, Panoramic, Skyline, Trees/Woods, Water
- Lot Size (Acres): 0.93
- Lot Size (Sq. Ft.): 40,511
- Fence: Yes
- Fencing (Description): Fenced
Water Features
- Water View: Yes
Financial Considerations
- Tax Amount: $23,930.56
Disclosures and Reports
- Special Conditions: None
- Property ID: 0200-093-00-06-00-001-000
Listed by Redfin Real Estate
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Listing agent
— 3 Heidi Ln —
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631-337-8238
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Schools
Schools serving 3 Heidi Ln
School District:Mount Sinai Union Free School District
| Name | Grades | Distance |
|---|---|---|
Mount Sinai Middle School 114 North Country Road, Mount Sinai, NY 11766 | 5-8 | 1 mi |
Mount Sinai Elementary School 118 North Country Road, Mount Sinai, NY 11766 | K-4 | 2.1 mi |
Mount Sinai High School 110 North Country Road, Mount Sinai, NY 11766 | 9-12 | 0.8 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 3 Heidi Ln
Tax History
Tax History for 3 Heidi Ln
Year
Property Taxes
Change
Tax Assessment
Change
2024
$22,735
100%
$5,600
—
2020
100%
$5,600
—
2022
-100%
$5,600
—
2016
$18,812
-5%
$5,600
—
2020
$19,873
2%
$5,600
—
2018
$19,416
2%
$5,600
—
2017
$19,014
—
$5,600
—
2016
$18,938
1%
$5,600
—
2015
$18,710
2%
$5,600
—
2015
$18,374
1%
$5,600
—
2014
$18,189
3%
$5,600
—
2013
$17,707
—
$5,600
—
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
Estimate the Cost for 3 Heidi Ln
3 Heidi Lane, Mount Sinai, NY 11766 (MLS# 997676) is a Single Family property with 4 bedrooms, 3 full bathrooms and 1 partial bathroom. 3 Heidi Lane is currently listed for $1,050,000 and was received on May 12, 2026. Want to learn more about 3 Heidi Lane? Do you have questions about finding other Single Family real estate for sale in Mount Sinai? You can browse all Mount Sinai real estate or contact a Coldwell Banker agent to request more information.