Seller's Agent in 2025
Lorraine Marotta
Signature Premier Properties
(516) 885-5174
2 in this area
59 Total Sales
15 Format Ln Smithtown, NY 11787
4
Beds
2.5
Baths
2,535
Sq Ft
10,019
Sq Ft Lot
Highlights
- Colonial Architecture
- 1 Fireplace
- Neighborhood Views
- Wood Flooring
- Granite Countertops
- Formal Dining Room
About This Home
As of September 2025Situated at 15 Format Lane in the heart of Smithtown, this home invites you to explore its blend of elegance and functionality.
Nestled in a serene neighborhood with tree-lined streets, this home combines classic charm with modern conveniences, offering an ideal retreat for both relaxation and entertaining. The surrounding community boasts a warm and welcoming atmosphere. With meticulously maintained landscapes and a location that balances privacy with accessibility, this property truly stands out as a gem in the area.
This move-in ready Colonial home features 4 bedrooms and 2.5 bathrooms. The front porch adds charm to the exterior. Inside, you will find a spacious living room with large windows. The eat-in kitchen is equipped with stainless steel appliances and granite countertops. The formal dining room includes French doors leading out to the rear patio. The family room has a fireplace, hardwood flooring, interior door to garage and French doors that open to the rear yard. The master suite includes vaulted ceilings and an ensuite bathroom. Additionally, there are 3 bedrooms and a hall bathroom. The property includes a young roof and exterior siding, a fenced yard, inground lawn sprinklers, a paver patio with pergola, paver driveway and walkway, and a fully landscaped backyard in a mid-block location. Other features include central air conditioning, double pane windows, natural gas, hot water, and a 2-car garage.
Full basement with recreation area, plenty of closet storage, utility room, washer and dryer.
The home is located in the Smithtown School District and is close to various amenities.
Last Agent to Sell the Property
Signature Premier Properties License #30MA0934745 Listed on: 06/18/2025
Home Details
Home Type
- Single Family
Est. Annual Taxes
- $14,665
Year Built
- Built in 1970
Lot Details
- 10,019 Sq Ft Lot
- West Facing Home
- Back Yard Fenced
Parking
- 2 Car Garage
- Garage Door Opener
- Driveway
- Off-Street Parking
Home Design
- Colonial Architecture
- 2-Story Property
- Frame Construction
- Shake Siding
Interior Spaces
- 2,535 Sq Ft Home
- Crown Molding
- Ceiling Fan
- Recessed Lighting
- 1 Fireplace
- Double Pane Windows
- Blinds
- Window Screens
- Entrance Foyer
- Family Room
- Formal Dining Room
- Storage
- Neighborhood Views
- Home Security System
Kitchen
- Eat-In Galley Kitchen
- Gas Oven
- Gas Cooktop
- Dishwasher
- Stainless Steel Appliances
- Granite Countertops
- Trash Compactor
Flooring
- Wood
- Tile
Bedrooms and Bathrooms
- 4 Bedrooms
- Walk-In Closet
Laundry
- Dryer
- Washer
Partially Finished Basement
- Basement Fills Entire Space Under The House
- Laundry in Basement
- Basement Storage
Outdoor Features
- Patio
- Shed
- Private Mailbox
- Porch
Schools
- Mt Pleasant Elementary School
- Great Hollow Middle School
- Smithtown High School-West
Utilities
- Central Air
- Heating System Uses Natural Gas
- Natural Gas Connected
- Cesspool
- Cable TV Available
Community Details
- Colonial
Listing and Financial Details
- Tax Lot 20
- Assessor Parcel Number 0800-162-00-04-00-040-000
Ownership History
Date
Name
Owned For
Owner Type
Purchase Details
Listed on
Jun 10, 2020
Closed on
Sep 16, 2020
Sold by
Cassely Charles E and Cassely Karen L
Bought by
Duffy Joseph T and Duffy Rachel
Seller's Agent
Melanie Mazzeo
Douglas Elliman Real Estate
Buyer's Agent
Lorraine Marotta
Signature Premier Properties
List Price
$579,000
Sold Price
$600,250
Premium/Discount to List
$21,250
3.67%
Current Estimated Value
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$316,371
Avg. Annual Appreciation
8.23%
Original Mortgage
$480,200
Outstanding Balance
$423,232
Interest Rate
2.9%
Mortgage Type
New Conventional
Estimated Equity
$493,389
Create a Home Valuation Report for This Property
The Home Valuation Report is an in-depth analysis detailing your home's value as well as a comparison with similar homes in the area
Home Values in the Area
Average Home Value in this Area
Purchase History
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Deed | $600,500 | None Available |
Source: Public Records
Mortgage History
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Open | $480,200 | New Conventional |
Source: Public Records
Property History
| Date | Event | Price | List to Sale | Price per Sq Ft | Prior Sale |
|---|---|---|---|---|---|
| 09/19/2025 09/19/25 | Sold | $925,000 | 0.0% | $365 / Sq Ft | |
| 07/09/2025 07/09/25 | Pending | -- | -- | -- | |
| 06/27/2025 06/27/25 | Off Market | $925,000 | -- | -- | |
| 06/18/2025 06/18/25 | For Sale | $850,000 | +41.6% | $335 / Sq Ft | |
| 09/16/2020 09/16/20 | Sold | $600,250 | +1.9% | -- | View Prior Sale |
| 06/10/2020 06/10/20 | Pending | -- | -- | -- | |
| 06/10/2020 06/10/20 | Price Changed | $589,000 | +1.7% | -- | |
| 06/10/2020 06/10/20 | For Sale | $579,000 | -- | -- |
Source: OneKey® MLS
Tax History Compared to Growth
Tax History
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2024 | $14,292 | $5,487 | $300 | $5,187 |
| 2023 | $14,292 | $5,487 | $300 | $5,187 |
| 2022 | $11,402 | $5,487 | $300 | $5,187 |
| 2021 | $11,402 | $5,487 | $300 | $5,187 |
| 2020 | $12,601 | $5,487 | $300 | $5,187 |
| 2019 | $12,601 | $0 | $0 | $0 |
| 2018 | -- | $5,487 | $300 | $5,187 |
| 2017 | $11,674 | $5,487 | $300 | $5,187 |
| 2016 | $11,542 | $5,487 | $300 | $5,187 |
| 2015 | -- | $5,487 | $300 | $5,187 |
| 2014 | -- | $5,487 | $300 | $5,187 |
Source: Public Records
Agents Affiliated with this Home
-
Lorraine Marotta
-
Linda Callegari
Buyer's Agent in 2025
Linda Callegari
Signature Premier Properties
(631) 807-6056
1 in this area
50 Total Sales
-
Melanie Mazzeo
Seller's Agent in 2020
Melanie Mazzeo
Douglas Elliman Real Estate
(631) 766-3450
70 Total Sales
Map
Source: OneKey® MLS
MLS Number: 878487
APN: 0800-162-00-04-00-040-000
Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.
The data relating to real estate for sale or lease on this web site comes in part from OneKey® MLS. Real estate listings held by brokerage firms other than Ten-X are marked with the OneKey® MLS logo or an abbreviated logo and detailed information about them includes the name of the listing broker.
IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
Information is deemed reliable but not guaranteed.
Copyright 2025 OneKey® MLS. All rights reserved.
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