21 Astor AvenueSaint James, NY 11780Price: $1,599,000

  • Price: $1,599,000
  • Est. Mortgage of $/month
  • 135 Days on Market
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Federal 30-year interest rate: 6.36% last updated on May 14, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • $1,599,000List Price
  • 6Bedrooms
  • 4Bathrooms
  • 0.75Acreage
  • 4,147Square Feet

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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 Motorized Chandelier. A Bright Formal Living Room 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 Wood Burning 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 Or This Could Easily Double As A Home Office. The 2nd Level Has 5 Bedrooms, A Full Bath, Laundry Room, And A Large Private En-Suite With Gas 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 Fully Equipped Pool House With CAC & Heat! An Incredible Value For This Much House! Gas Line In Street. Projected ARV $2,300,000 Owner Motivated. Let's Talk!

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Listed by Frank Pignataro CBR of Sailing Home Realty of L I LLC (516-377-4760)

Listings courtesy of OneKey® MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of May 20, 2026 5:50 AM EDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. IDX information is provided exclusively for consumers’ personal noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. The use of the MLS GRID Data may be subject to an end user license agreement.

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