Date
Details
Price
Change
Source
1/14/2026
Listed
$1,699,000
—
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
21 Astor Ave Is Located In The Heart Of Saint James Within The Desirable Smithtown School District. This Custom Built And Architecturally Appealing 6 Bedroom, 3.5 Bath Colonial Is Only 25 Years Young & Sits On 3/4 Of An Acre. A Charming Open Front Porch Greets You Before You Enter The Large 2 Story Foyer With Grand Staircase. A Formal Living Room With Fireplace Awaits Your Guests Before You Sit Down For A Meal In The Formal Dining Room Featuring A Tray Ceiling. Lovely Hardwood Floors Throughout The Home. The Spacious Custom Kitchen With Island Has Plenty Of Room For A Dining Table And Is Open To The Family Room With Fireplace. There Is Also A Large Enclosed Porch For More Entertaining Space That Leads To The Rear Yard. You And Your House Guests Or In-Laws Will Appreciate The Privacy Of The 1st Floor Guest Quarters With Full Bath & Separate Entrance Complete With Mud Room And Drop Off Station. The 2nd Level Has 5 Bedrooms, A Full Bath, Laundry Room, And A Large Private En-Suite With Fireplace, Walk-In Closet, And Full Bath With Tub And Separate Shower Stall. If The 4,147 Square Feet Of Living Space Wasn't Enough For You, Then Maybe The Full Finished Basement With A Home Pub & Half Bath Will Help! Wait! Theres More!! Attached 2 Car Garage, Inground Pool, & BONUS Pool House! An Incredible Value For This Much House! Make Your Heart Happy This Valentines & Settle Down In The Heart Of Saint James!
Full Property Details
Full Property Details for 21 Astor Ave
General
- Price: $1,699,000
- Taxes: $27,522
- Status: Active
- Type: Single Family
- Source: Long_Island
- MLS ID: 948811
- Updated: 1/14/2026
- Added to Site: 2 day(s) ago
Interior
- Number of Rooms: 12
- Interior Features: First Floor Bedroom, First Floor Full Bath, Cathedral Ceiling(s), Crown Molding, Eat-in Kitchen, Entrance Foyer, Formal Dining, Granite Counters, High Ceilings, In-Law Floorplan, Kitchen Island, Open Kitchen, Primary Bathroom, Recessed Lighting, Tray Ceiling(s), Walk-In Closet(s), Washer/Dryer Hookup, Wet Bar
- Fireplace: Yes
- Number of Fireplaces: 3
- Fireplace(s): Bedroom, Family Room, Living Room
- Appliances: Dishwasher, Gas Range, Microwave, Range, Refrigerator, Washer, Oil Water Heater
- Flooring: Ceramic Tile, Hardwood
Rooms
Bathrooms
- Total Bathrooms: 4
- Full Bathrooms: 3
- Half Bathrooms: 1
Bedrooms
- Total Bedrooms: 6
Additional Information
- Pool: Yes
- Private Pool: Yes
- Pool Description: In-Ground, Vinyl
Exterior
- Porch/Patio/Deck: Patio, Porch
Parking
- Garage: Yes
- Garage Spaces: 2
- Parking Features: Driveway, Garage, Off Street, Private
Location
- County: Suffolk County
- Neighborhood: Saint James
- Cross Streets: Woodlawn
- Driving Directions: Woodlawn to Astor
School Information
- High School District: Smithtown
- Elementary School: Mills Pond Elementary School
- Middle School: Nesaquake Middle School
- High School: Smithtown High School-East
Heating & Cooling
- Central air: Yes
- Cooling Type: Central Air
- Heating Type: Oil, Radiant Floor
Utilities
- Sewer: Cesspool
- Water: Public
- Utility Description: Electricity Connected, Propane, See Remarks, Water Connected
Structural Information
- Architectural Style: Colonial
- Detached/Attached: Detached
- Construction: Frame, Wood Siding
- Basement: Yes
- Basement Desc.: Finished, Full Basement
- Unfinished Attic: Yes
- Building Size: 4629
- Square Feet: 4,629
- Sq. Ft. Source: Public Records
- Year Built: 2001
Additional Structures
- Other Structures: Cabana, Pool House
Lot Features
- Lot Size (Acres): 0.75
- Lot Size (Sq. Ft.): 32,670
Financial Considerations
- Tax Amount: $27,522.4
Disclosures and Reports
- Special Conditions: None
- Property ID: 0800-087-00-01-00-004-001
Listed by Sailing Home Realty of L I LLC
We Value Your Privacy
We Value Your Privacy
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Listing agent
— 21 Astor Ave —
Sailing Home Realty of L I LLC
516-377-4760
NMLS#: 1598647Get Pre-Approved Today
Schools
Schools serving 21 Astor Ave
School District:Smithtown Central School District
| Name | Grades | Distance |
|---|---|---|
Mills Pond Elementary School 246 Moriches Road, Saint James, NY 11780 | K-5 | 0.4 mi |
Great Hollow Middle School 150 Southern Boulevard, Nesconset, NY 11767 | 6-8 | 2.2 mi |
Smithtown High School East 10 School Street, Saint James, NY 11780 | 9-12 | 1 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 21 Astor Ave
Tax History
Tax History for 21 Astor Ave
Year
Property Taxes
Change
Tax Assessment
Change
2020
100%
$9,340
—
2022
-100%
$9,340
1%
2016
$19,334
-17%
$9,240
—
2020
$23,190
3%
$9,240
—
2018
$22,430
9%
$9,240
—
2017
$20,586
2%
$9,240
—
2016
$20,172
1%
$9,240
—
2015
$20,028
2%
$9,240
—
2015
$19,658
2%
$9,240
—
2014
$19,251
-6%
$9,240
-9%
2013
$20,539
—
$10,190
—
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 21 Astor Ave
21 Astor Avenue, Saint James, NY 11780 (MLS# 948811) is a Single Family property with 6 bedrooms, 3 full bathrooms and 1 partial bathroom. 21 Astor Avenue is currently listed for $1,699,000 and was received on January 14, 2026. Want to learn more about 21 Astor Avenue? Do you have questions about finding other Single Family real estate for sale in Saint James? You can browse all Saint James real estate or contact a Coldwell Banker agent to request more information.