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$999,000

  • For Sale
  • Active
  • Single Family
  • 4 Beds
  • 3 Full Baths
  • 1 Partial Bath
  • 3,992 Sq. Ft.
  • 2 Car Garage
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Secluded Gem in Blue Ribbon Mount Sinai School District! Discover an exceptional living experience at 3 Heidi Lane, a stunning Colonial-style residence privately nestled at the end of a serene cul-de-sac in desirable Mount Sinai. Perfectly placed on just under an acre, this property offers unrivaled privacy, with one side extending into state owned land, creating a tranquil and natural buffer offering seclusion from neighbors. Inside you will find a spacious and inviting layout featuring 4 bedrooms and 3.5 bathrooms, including a coveted first floor master bedroom suite (with Jacuzzi tub) for added comfort and convenience. The heart of the home is an entertainer's dream-a wide open floor plan on the main level, including a huge living room, eat in kitchen, formal dining room and library, making it ideal for hosting gatherings both large and small. A distinct separate guest wing with separate entrance ensures ample space and comfort for visitors, or offers an ideal setup for a home office or creative studio or possible mother-daughter with proper permits, accommodating multi-generational living with ease. Additional highlights include a two-car garage, a huge basement ready for finishing, and a private backyard oasis with scenic views of the Long Island Sound from the top of the hill. Enjoy the serenity of nature, the space to entertain, and the excellence of the Mount Sinai School District-all in one breathtaking property. Don't miss your chance to own this one-of-a-kind private retreat!

Full Property Details for 3 Heidi Ln

General

  • Price: $999,000
  • Taxes: $23,930
  • Status: Active
  • Type: Single Family
  • Source: Long_Island
  • MLS ID: 878709
  • Updated: 8/4/2025
  • Added to Site: 213 day(s) ago

Interior

  • Number of Rooms: 11
  • Interior Features: First Floor Bedroom, First Floor Full Bath, Breakfast Bar, Cathedral Ceiling(s), Chandelier, Eat-in Kitchen, Entrance Foyer, Formal Dining, High Ceilings, His and Hers Closets, In-Law Floorplan, Kitchen Island, Master Downstairs, Open Kitchen, Pantry, Walk-In Closet(s), Washer/Dryer Hookup
  • Fireplace: Yes
  • Fireplace(s): Living Room, Wood Burning
  • Appliances: Dishwasher, Microwave, Oven, Range, Refrigerator, Stainless Steel Appliance(s)
  • Flooring: Carpet, Ceramic Tile, Hardwood

Rooms

Bathrooms

  • Total Bathrooms: 4
  • Full Bathrooms: 3
  • Half Bathrooms: 1

Bedrooms

  • Total Bedrooms: 4

Exterior

  • Porch/Patio/Deck: Deck, Patio

Parking

  • Garage: Yes
  • Garage Spaces: 2
  • Parking Features: Driveway, Garage

Location

  • County: Suffolk County
  • Cross Streets: Frost Valley Road
  • Driving Directions: Crystal Brook Hollow Road to Frost Valley Road to Heidi Lane

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
  • Heating Type: Forced Air
  • Heating Zones: 2

Utilities

  • Sewer: Septic Tank
  • Water: Public
  • Utility Description: Electricity Connected, Natural Gas Connected, Water Connected

Structural Information

  • Architectural Style: Colonial
  • Detached/Attached: Detached
  • Construction: Vinyl Siding
  • Basement: Yes
  • Basement Desc.: Full Basement, Unfinished
  • Building Size: 3992
  • Square Feet: 3,992
  • Sq. Ft. Source: Public Records
  • Year Built: 2001

Lot Features

  • Lot Size (Acres): 0.93
  • Lot Size (Sq. Ft.): 40,511
  • Lot Features: Cul-De-Sac, Landscaped, Secluded, Sprinklers In Front, Sprinklers In Rear, Views

Financial Considerations

  • Tax Amount: $23,930.57

Disclosures and Reports

  • Special Conditions: None
  • Property ID: 0200-093-00-06-00-001-000

Listed by Signature Premier Properties

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Listing agent

— 3 Heidi Ln —

  • Signature Premier Properties

631-385-6024

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

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Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 3 Heidi Ln

School District:Mount Sinai Union Free School District
NameGradesDistance
Mount Sinai Middle School
114 North Country Road, Mount Sinai, NY 11766
5-81 mi
Mount Sinai Elementary School
118 North Country Road, Mount Sinai, NY 11766
K-42.1 mi
Mount Sinai High School
110 North Country Road, Mount Sinai, NY 11766
9-120.8 mi
Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 3 Heidi Ln Get Price Alerts and Save Property

Date
Details
Price
Change
Source
8/04/2025
Price Reduced
$999,000
-9.1%
MLS
6/18/2025
Listed
$1,099,000
—
MLS
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 3 Heidi Ln

Year
Property Taxes
Change
Tax Assessment
Change
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
—
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 3 Heidi Ln

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

Listed by Signature Premier Properties

3 Heidi Lane, Mount Sinai, NY 11766 (MLS# 878709) is a Single Family property with 4 bedrooms, 3 full bathrooms and 1 partial bathroom. 3 Heidi Lane is currently listed for $999,000 and was received on June 18, 2025. 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.

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