301 Old Mill Rd

Sq. Ft.
/ Sq. Ft.
Sq. Ft.
per Sq. Ft.

Description

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, 5-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...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, 5-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.
  1. Listed by Gregory J. Masaitis • Keller Williams Realty Elite
    P: (516)-795-6900 C: (516)-241-4109 greg@masaitisteam.com

Property Details for 301 Old Mill Road

City/Township
Smithtown
Architectural Style
Colonial
Garage Spaces
3.00
Waterfront
No
LISTING UPDATED: 06/29/2026 12:41 PM

Property Details for 301 Old Mill Road

StatusActive
MLS #1019623
Days on MarketListed Today
Taxes$33,000 / year
HOA Fees-
Condo/Co-op Fees-
Property TypeSingle Family
MLS TypeSingle Family
Year Built2026
Lot Size0.14 AC / 6,050 SF
CountySuffolk County

Location

Listing Courtesy of Keller Williams Realty Elite, Gregory J. Masaitis
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Building Information for 301 Old Mill Road

Stories-Year Built2026Building Size-Lot Size0.14 AC / 6,050 SF

Payment Calculator

$16,199 per month

30 year fixed, 6.36% Interest

Principal and Interest

$13,449

Property Taxes

$2,750

HOA Dues

$0

The Payment Calculator is for illustrative purposes only.

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Property Information for 301 Old Mill Road

Summary
Location and General Information
  • Senior Community YN: No
  • Property Attached: No
  • Structure Type: Detached
  • Levels: Two
  • State Or Province: NY
School Information
  • School District: Smithtown
  • Elementary School District: Smithtown
  • Elementary School: St James Elementary School
  • Middle Or Junior School District: Smithtown
  • Middle Or Junior School: Nesaquake Middle School
  • High School District: Smithtown
  • High School: Smithtown High School-East
Rental
Rental
  • Lease Considered: No
Unit Information
Unit Information
  • Building Units Total: 1
Room Information
Room 1 Information
  • Room Level: First
  • Room Type: Bedroom 1
Room 2 Information
  • Room Level: First
  • Room Type: Bedroom 2
Room 3 Information
  • Room Level: Second
  • Room Type: Primary Bedroom
Room 4 Information
  • Room Level: Second
  • Room Type: Bedroom 3
Room 5 Information
  • Room Level: Second
  • Room Type: Bedroom 4
Room 6 Information
  • Room Level: Second
  • Room Type: Bedroom 5
Taxes and HOA Information
Taxes and HOA Information
  • Tax Source: Other
  • Tax Year: 2026.0
  • Association: No
Interior and Exterior Features
Interior Features
  • Amenities: Colonial, Eat in Kitchen, Electric, Formal Dining, Laundry Room, Pantry, Public, Quartz/Quartzite Counters, Tray Ceiling(s), Walk In Closet
  • Interior Features: Eat-in Kitchen, Formal Dining, Pantry, Quartz/Quartzite Counters, Tray Ceiling(s), Walk-In Closet(s)
  • Appliances: Dishwasher, Dryer, Range, Refrigerator, Washer
  • Number Of Kitchens: 1.0
  • Total Rooms: 10
  • Basement: Full, Unfinished
  • Attic Description: Full,Pull Stairs,See Remarks
  • Fireplace: Yes
  • Fireplace Features: Electric
  • Location Amenities: Eat in Kitchen, Formal Dining Room, Pantry, Walk In Closet
  • Laundry Features: Laundry Room
  • Living Area: .00
  • Basement: Yes
Exterior Features
  • Exterior Property Features: Private
  • Elevation Certificate: No
  • Construction Materials: Foam Insulation, HardiPlank Type, Stone
  • Pool Private: No
Lot Information
  • Building Area Units: Square Feet
Parking
  • Parking Features: Private
  • Garage: Yes
  • Carport: No
Utilities
  • Cooling: Central Air
  • Heating: Forced Air
  • Heat Fuel Type: Forced Air
  • Number Of Heating Zones: 2
  • Sewer: Cesspool
  • Water Source: Public
  • Utilities: See Remarks
Green Features
  • Green Features: Dishwasher, Dryer, Range, Refrigerator, Washer, Forced Air

Property History for 301 Old Mill Road

DateEvent & SourcePriceAppreciation
Jun 29, 2026

Listed (Active)

ONEKEY #1019623

$2,699,000
DateEvent & SourcePrice
06/29/2026

Listed (Active)

ONEKEY #1019623

$2,699,000

For completeness, we often displays two records for one sale: the MLS record and the public record.

Public Records for 301 Old Mill Road

Taxable ValueLand$1,200Additions-Total$1,200
Home Facts
Beds0Lot Size52,272 SqFtStyleResidentialCountySUFFOLKAPN0800-052.00-01.00-001.001

Schools near 301 Old Mill Road

This home is within Smithtown Central School District.
Rating
School
Type
Grades
Distance
Public - K to 5
Public - 6 to 8
Public - 9 to 12
Public - 6 to 8
Rating
School
Distance
Saint James Elementary School
PublicK to 5

Nesaquake Middle School
Public6 to 8

Smithtown High School East
Public9 to 12

Great Hollow Middle School
Public6 to 8

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

Similar Homes

301 Old Mill Road is a single family home for sale in St. James, NY 11780. This property was listed for sale on June 29, 2026 by Keller Williams Realty Elite, it's currently listed at $2,699,000. This listing's school district is Smithtown Central School District. Nearby schools include Saint James Elementary School, Nesaquake Middle School and Smithtown High School East. 301 Old Mill Road is a 6-bed, 4-bath, single family home built in 2026.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of any information, descriptions or measurements (including square footage measurements and property condition), such should be independently verified through appropriate means, including, but not limited to, in person inspection and public records, and Compass International Holdings, its subsidiaries, affiliates and independently owned and operated franchisees, and their affiliated agents and associated third parties expressly disclaim any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the seller's discretion. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of Keller Williams Realty Elite, Gregory J. Masaitis

Based on information submitted to the MLS GRID as of 06/29/2026 12:41 PM. 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. Properties displayed may be listed or sold by various participants in the MLS. IDX information is provided exclusively for consumers’ personal, non-commercial 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. Use of the MLS GRID data may be subject to an end user license agreement prescribed by the applicable MLS of the Member Participant, if any, and as amended from time to time.