$2,799,000

317 Old Mill Rd Nissequogue, NY 11780

4 beds
4 full, 1 partial
4,250 sqft
2.7 acres
$659 / sqft
House

Property details

About 317 Old Mill Rd

Welcome to "The Hill Valley House," where timeless design and modern luxury come together in perfect harmony. Completed in 2023 with no expense spared, this one-of-a-kind custom estate sits on 2.66 acres of lush, private grounds and offers an extraordinary blend of timeless design and cutting-edge innovation. Step inside to experience an ambiance of sophistication and comfort, with soaring 10' ceilings throughout, high-end custom treatments, and impeccable finishes. The grand great room is anchored by a stunning dual-sided gas stone fireplace and flows seamlessly into the heart of the home—a spectacular, state-of-the-art gourmet kitchen. Designed for both beauty and function, this culinary showpiece features rich custom wood cabinetry, sleek quartz countertops with a dramatic waterfall edge, and a large center island with ample seating—perfect for casual dining or elegant entertaining. The kitchen is fully outfitted with top-tier stainless steel appliances, including a professional-grade six-burner gas stove, wine fridge, and an inviting dinette area that overlooks the tranquil backyard. The first-floor primary suite is a true sanctuary, boasting walls of glass that invite nature in and a spa-inspired ensuite with exquisite tilework, a soaking tub, walk-in shower, custom wood double vanity, and a spacious walk-in closet. A private first-floor office adds convenience and flexibility. Upstairs, three additional bedrooms each feature their own ensuite baths, including one with a private rooftop deck. A second-floor entertainment area with built in speakers and walk-in storage room or office complete the upper level. One of the crown jewels of "The Hill Valley House" is the screened-in porch—a luxurious outdoor haven designed for year-round enjoyment. Featuring double French doors, a dramatic dual stone gas fireplace, built-in infrared heaters, and a refined dining area, this exceptional space merges indoor elegance with outdoor serenity. The finished basement includes a dedicated home gym and a vast unfinished area with endless potential—ideal for a media room, wine cellar, or additional living space tailored to your lifestyle. Adding to the home’s long list of luxuries are a state-of-the-art solar panel system, whole-house water purification, advanced backup power system, smart home technologies, as well as an oversized three-car garage. Outside, your personal resort awaits—with a heated 19'x36' saltwater in-ground pool, cozy fire pit, and expansive patios—perfect for entertaining or peaceful relaxation. The Hill Valley House offers a lifestyle that feels like a permanent vacation—set on lush, resort-like grounds, yet just minutes from Long Island Sound beaches, local marinas, restaurants, charming town shops, and Stony Brook University. Truly, no detail was overlooked in the creation of this exceptional home. From its superior construction to its thoughtfully curated finishes, this is more than a home—it’s a lifestyle. Make this dream property yours today.

Highlights

Home typeSingle Family Residence
HeatingElectric, ENERGY STAR Qualified Equipment, Forced Air, Heat Pump, Propane, Solar
StatusActive
CoolingCentral Air
Size4,250 sqft
BasementYes
Lot size2.66 Acres
Year built2023
ParkingDriveway, Garage, Garage Door Opener, Private
MLS #878416
Garage3 spaces
Private poolYes

Summary

  • Partial Bathrooms: 1
  • Full Bathrooms: 4
  • Appliances: Convection Oven, Dishwasher, Dryer, Electric Oven, Electric Water Heater, ENERGY STAR Qualified Appliances, Exhaust Fan, Gas Range, Humidifier, Microwave, Refrigerator, Stainless Steel Appliance(s), Washer, Water Purifier, Wine Cooler
  • Basement: Yes
  • Flooring Type: Ceramic Tile, Hardwood
  • Interior: First Floor Bedroom, First Floor Full Bath, Bidet, Breakfast Bar, Built-in Features, Cathedral Ceiling(s), Ceiling Fan(s), Chefs Kitchen, Double Vanity, Eat-in Kitchen, ENERGY STAR Qualified Door(s), Entrance Foyer, Formal Dining, Granite Counters, High Ceilings, High Speed Internet, Kitchen Island, Low Flow Plumbing Fixtures, Primary Bathroom, Master Downstairs, Open Floorplan, Open Kitchen, Pantry, Quartz/Quartzite Counters, Recessed Lighting, Smart Thermostat, Soaking Tub, Storage, Walk-In Closet(s), Washer/Dryer Hookup, Wet Bar, Wired for Sound
  • Total Bedroom Count: 4
  • Garage Space: 3 spaces
  • Private Pool: Yes
  • Parking: Driveway, Garage, Garage Door Opener, Private
  • Exterior: Balcony, Fire Pit, Gutters, Back Fence, Fence, Porch/Covered, Patio, Porch, Screened Porch
  • Architectural Style: Colonial, Farmhouse
  • Heating: Electric, ENERGY STAR Qualified Equipment, Forced Air, Heat Pump, Propane, Solar
  • Cooling: Central Air
  • List Price: $2,799,000
  • Price/SqFt: $658
  • Lot: Back Yard, Front Yard, Landscaped, Level, Wooded, Private, Sprinklers In Front
  • Directions: 25A to Moriches Rd./ Left on Old Mill Rd/ follow to #317 on left. OR Edgewood Ave to River Rd./ Bear right on Old Mill Rd. to #317 on right
  • Year Built: 2023
  • Living Area: 4,250 SqFt
  • Lot Size: 2.66 Acres
  • MLS Number: 878416
  • MLS Name: ONEKEY2
  • Office Name: Daniel Gale Sothebys Intl Rlty
  • Office Phone: (631) 584-6600

IDX Listings courtesy of OneKey MLS as distributed by MLS GRID.

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.

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IDXThe data relating to real estate for sale on this web site comes in part from the Broker Reciprocity Program of the OneKey™ MLS. Real Estate listings held by brokerage firms other than this broker are marked with the Broker Reciprocity logo and detailed information about them includes the name of the listing brokers. This information is provided exclusively for consumers’ personal, non-commercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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Last updated on: 6/18/2025, 11:41:27 PM Eastern. If you have any questions regarding the accuracy of this data, please contact us at help@rockethomes.com.

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317 Old Mill Rd, Nissequogue, NY 11780 - modern inspired farmhouse featuring a standing seam roof, roof with shingles, and a front yard

$2,799,000

317 Old Mill Rd

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Price information

Property sales

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Tax history

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Nearby schools

7

Saint James Elementary School

Public Magnet KG-5

1.4 mi

580 Lake Ave

6

Dogwood Elementary School

Public District KG-5

2.0 mi

50 Dogwood Dr

6

Smithtown Elementary School

Public Magnet KG-5

2.3 mi

51 Lawrence Ave

School ratings are a score out of 10, where 10 is the highest and 1 is the lowest.

All data from GreatSchools

Neighborhood

The neighbors living near this home have an average income of $187,202. Residents of Nissequogue, NY typically earn $200k+ each year. The majority of families are married, no kids. The most common level of education of people living in this area is post secondary degree.

How much money do the neighbors make?

6%
<35k
16%
35k-100k
32%
100k-200k
46%
200k+

What level of education do the neighbors have?

High School Diploma
Post Secondary Degree
Masters Degree
Doctorate

What types of families live nearby?

21%
Single, No Kids
4%
Single, with Kids
42%
Married, No Kids
33%
Married, with Kids

Are the neighbors home owners or renters?

Home Owners
Renters

How old are people in this area?

12%
<11 yrs old
15%
12-17 yrs old
11%
18-34 yrs old
45%
35-64 yrs old
17%
65+ yrs old

What do the neighbors do for fun?

  • Skiing/snowboardingSkiing/snowboarding
  • PGA/LPGAPGA/LPGA
  • Extreme SportsExtreme Sports

Where do the neighbors shop?

  • BJs Wholesale ClubBJs Wholesale Club
  • Stein MartStein Mart
  • Academy Sports & OutdoorsAcademy Sports & Outdoors

Where do the neighbors go to eat?

  • PaneraPanera
  • Cracker BarrelCracker Barrel
  • Bob EvansBob Evans

What do the neighbors drive?

  • InfinitiInfiniti
  • LexusLexus
  • LincolnLincoln

What do the neighbors listen to?

  • Adult HitsAdult Hits
  • OldiesOldies
  • News/Talk/InformationNews/Talk/Information
All data provided by Home Junction and Claritas

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Frequently asked questions

About 317 Old Mill Rd

The listing price of 317 Old Mill Rd property is $2,799,000.

The property 317 Old Mill Rd is a house located in Nissequogue, New York, 11780.

Active Listing: 317 Old Mill Rd is For Sale (Active/New) which means the seller is accepting offers.

The nearby schools for 317 Old Mill Rd are: Saint James Elementary School (GreatSchools Rating 7/10), Dogwood Elementary School (GreatSchools Rating 6/10), Smithtown Elementary School (GreatSchools Rating 6/10), Nesaquake Middle School (GreatSchools Rating 7/10), Great Hollow Middle School (GreatSchools Rating 7/10), Accompsett Middle School (GreatSchools Rating 7/10), Smithtown High School East (GreatSchools Rating 10/10), Kings Park High School (GreatSchools Rating 9/10), Smithtown High School-West (GreatSchools Rating 10/10).

The property at 317 Old Mill Rd has 4 bedrooms and 4 full and 1 half bathrooms.

The property 317 Old Mill Rd is 4,250 SqFt (source: MLS/tax record).

The year of construction for 317 Old Mill Rd is 2023.

This home is located at 317 Old Mill Rd in Nissequogue, NY and zip code 11780 in the Town of Smithtown neighborhood. This 4,250 square foot home, which was built in 2023, sits on a 2.66 acre lot. Features: 4 bedrooms, 5 bathrooms. It has been listed on Rocket Homes since June 16, 2025 and is currently priced at $2,799,000.

While more than 0 listings in Nissequogue, NY in May 2025 were sold above asking price, there were more than 0 listings sold at asking price, and more than 2 were sold below. The number of listings in Nissequogue, NY increased by 6.3% between April and May 2025. The median list price of listings available in May 2025 was $1,200,000, while the average time on the real estate market was 75 days.

From Rocket Homes Real Estate and based on county public records data.

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