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301 Old Mill Road, Saint James NY 11780
301 Old Mill Road, Saint James NY 11780
New York>Suffolk County>Smithtown

301 Old Mill RoadSaint James, NY 11780

For Sale

$2,499,000

Smart Buyer Rebate $24,990

Welcome to 301 Old Mill Road, a masterfully crafted custom-built new construction nestled on a private lot backing directly to protected preserve land, offering exceptional privacy in the heart of Saint James. Designed with extraordinary attention to detail, this exceptional 6-bedroom, 4-bath residence blends timeless architecture with refined modern luxury, showcasing soaring ceilings, elegant living spaces, thoughtfully curated finishes, distinctive copper roof accents, and impeccable craftsmanship throughout. Additional highlights include a gourmet chef’s kitchen and an expansive lower level with 9-foot ceilings and egress, offering endless possibilities. Every detail reflects quality, comfort, and thoughtful design, creating a truly one-of-a-kind home that must be experienced in person. Available color upgrade through builder.

Listed by Gregory J. Masaitis

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Keller Williams Realty Elite

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516-795-6900

Last updated July 31, 2026

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Source: OneKey #1019623

Listing Facts

  • TypeSingle-family
  • NeighborhoodSmithtown
  • Bedrooms6
  • Bathrooms4
  • Days on Prevu32
  • Taxes$33,000/year
  • Size6,050 sqft
  • Price per sqft$413

Amenities

  • Dishwasher
  • Washer/Dryer
  • Air Conditioning
  • Parking

Location

Mortgage Calculator

Listing History

07/31/2026
Price Decreased
$2,499,000
06/29/2026
Listed by Keller Williams Realty Elite
$2,699,000

Property Details for 301 Old Mill Road

Exterior

Construction

  • Year Built: 2026
  • Architectural Style: Colonial
  • Construction Materials: Foam Insulation, Hardi Plank Type, Stone

Measurements

  • Building Area Total: 6,050
  • Building Area Units: Square Feet
  • Lot Size Acres: 1.17
  • Lot Size Square Feet: 50,965

Financial

Taxes

  • Tax Annual Amount: $33,000.00
  • Tax Year: 2026

Interior

Features

  • Appliances: Dishwasher, Dryer, Range, Refrigerator, Washer
  • Fireplace Features: Electric
  • Fireplace: Yes
  • Interior Features: Eat-in Kitchen, Formal Dining, Pantry, Quartz/Quartzite Counters, Tray Ceiling(s), Walk-In Closet(s)

Measurements

  • Living Area: 6,050
  • Living Area Source: Other

Rooms

  • Basement: Full, Unfinished
  • Has Basement: Yes
  • Bathrooms Full: 4
  • Bathrooms Total Integer: 4
  • Bedrooms Total: 6
  • Rooms Total: 10

Parking

Parking

  • Garage Spaces: 3
  • Garage: Yes
  • Parking Features: Private

Schools

Elementary School

  • Elementary School: St James Elementary School
  • Elementary School District: Smithtown

High School

  • High School: Smithtown High School-East
  • High School District: Smithtown

Middle or Junior School

  • Middle Or Junior School: Nesaquake Middle School
  • Middle Or Junior School District: Smithtown

Utilities

Equipment

  • Cooling: Central Air
  • Heating: Forced Air
  • Laundry Features: Laundry Room
  • Sewer: Cesspool
  • Utilities: See Remarks
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 6 bedrooms and 4 bathrooms in this single-family home at 301 Old Mill Road.

What schools are nearby to 301 Old Mill Road?

Nearby schools include the St James Elementary School, Nesaquake Middle School, and Smithtown High School-East.

Does this single-family home have parking?

Yes, there are 3 parking spaces available for 301 Old Mill Road.

What are the annual taxes for 301 Old Mill Road?

Annual taxes for this single-family home are estimated at $33,000.

How does 301 Old Mill Road compare to other single-family homes in Smithtown?

This single-family home is listed 103% above the average price for single-family homes in Smithtown and has been on the market for 22 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 6,050 sqft.

301 Old Mill Road is a 6-bedroom, 4-bath single-family home for sale in Saint James NY 11780. Listed on Prevu for 32 days at $2,499,000. This includes a recent price decrease of $200,000. This residence features 6,050 square feet of living space, located in Smithtown. The median listing price for single-family homes in this area is $875,000. Nearby schools include St James Elementary School, Nesaquake Middle School, and Smithtown High School-East. Property amenities include dishwasher, air conditioning, parking, and washer/dryer. View other single-family home listings in Suffolk County.

The data relating to real estate for sale on this website comes in part from the IDX Program of OneKey™ MLS. The source of the displayed data is either the property owner or public record provided by non-governmental third parties. It is believed to be reliable but not guaranteed. This information is provided exclusively for consumers’ personal, non-commercial use. Information Copyright 2026, OneKey™ MLS. All Rights Reserved.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.