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 quartzite 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.
Sold for $2,799,000
$2,799,000
317 Old Mill Road, Nissequogue, NY 11780
4beds
4,250sqft
Single Family Residence, Residential
Built in 2023
2.66 Acres Lot
$2,911,000 Zestimate®
$659/sqft
$-- Estimated rent
Home value
$2,911,000
$2.62M - $3.23M
Not available
Zestimate® history
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Zillow last checked: 7 hours ago
Listing updated: September 25, 2025 at 09:45am
Listed by:
Bonnie Glenn 631-921-1494,
Daniel Gale Sothebys Intl Rlty 631-584-6600
Bought with:
Lawrence J. Burkhard, 10401325304
Serhant LLC
Source: OneKey® MLS as distributed by MLS GRID,MLS#: 878416
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 5
- Full bathrooms: 4
- 1/2 bathrooms: 1
Primary bedroom
- Description: Beautiful Primary Bedroom Suite with Wall of Windows Overlooking the Backyard and Pool, Large Walk In Closet
- Level: First
Primary bathroom
- Description: Spa Like Full Primary Ensuite with Custom Vanity, Tub, Huge Walk In Shower
- Level: First
Other
- Description: Entry foyer, formal dining room, Great Room with gas fireplace, Eat-in-Kitchen with center island & dinette, office, .5 bath, laundry
- Level: First
Other
- Description: 3 Additional Bedrooms- Each with their Own Private Bathrooms (3), Entertainment/Coffee Bar Lounge Area, Office or Walk in Storage Area. Small Private Deck
- Level: Second
Basement
- Description: Full Basement with 10' Ceilings- gym, storage room, huge unfinished area, utilities
- Level: Basement
Heating
- Electric, ENERGY STAR Qualified Equipment, Forced Air, Heat Pump, Propane, Solar
Cooling
- Central Air
Appliances
- Included: 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 Owned, Wine Refrigerator
- Laundry: Washer/Dryer Hookup, Electric Dryer Hookup, Inside, Laundry Room, Washer Hookup
Features
- 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, Entrance Foyer, Formal Dining, Granite Counters, 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, Wired for Sound
- Flooring: Ceramic Tile, Hardwood
- Doors: ENERGY STAR Qualified Doors
- Windows: Double Pane Windows, ENERGY STAR Qualified Windows, Insulated Windows
- Basement: Full,Partially Finished,Storage Space
- Attic: Partial,Pull Stairs
- Number of fireplaces: 1
- Fireplace features: Gas, Living Room
Interior area
- Total structure area: 5,203
- Total interior livable area: 4,250 sqft
Property
Parking
- Total spaces: 3
- Parking features: Driveway, Garage, Garage Door Opener, Private
- Garage spaces: 3
- Has uncovered spaces: Yes
Features
- Levels: Three Or More
- Patio & porch: Covered, Patio, Porch, Screened
- Exterior features: Fire Pit, Mailbox, Rain Gutters
- Has private pool: Yes
- Pool features: Fenced, In Ground, Outdoor Pool, Pool Cover, Salt Water, Vinyl
- Fencing: Back Yard,Partial
Lot
- Size: 2.66 Acres
- Features: Back Yard, Front Yard, Landscaped, Level, Private, Sprinklers In Front
- Residential vegetation: Partially Wooded
Details
- Parcel number: 0802012000100004004
- Special conditions: None
- Other equipment: Fuel Tank(s), Pool Equip/Cover
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Colonial
- Property subtype: Single Family Residence, Residential
Materials
- Advanced Framing Technique, Cedar, HardiPlank Type
- Foundation: Concrete Perimeter
Condition
- Actual
- Year built: 2023
Utilities & green energy
- Sewer: Septic Tank
- Water: Public
- Utilities for property: Cable Available, Propane, Trash Collection Public, Water Available
Green energy
- Energy generation: Solar
Community & neighborhood
Security
- Security features: Security System, Smoke Detector(s), Video Cameras
Location
- Region: Saint James
Other
Other facts
- Listing agreement: Exclusive Right To Sell
Price history
| Date | Event | Price |
|---|---|---|
| 9/24/2025 | Sold | $2,799,000$659/sqft |
Source:  OneKey® MLS as distributed by MLS GRID #878416 Report a problem | ||
| 7/9/2025 | Pending sale | $2,799,000$659/sqft |
Source: OneKey® MLS as distributed by MLS GRID #878416 Report a problem | ||
| 6/25/2025 | Listing removed | $2,799,000$659/sqft |
Source: OneKey® MLS as distributed by MLS GRID #878416 Report a problem | ||
| 6/16/2025 | Listed for sale | $2,799,000$659/sqft |
Source: OneKey® MLS as distributed by MLS GRID #878416 Report a problem | ||
Public tax history
Tax history is unavailable.
Neighborhood: 11780
Nearby schools
GreatSchools rating
- 5/10Saint James Elementary SchoolGrades: K-5Distance: 1.4 mi
- 6/10Nesaquake Middle SchoolGrades: 6-8Distance: 1 mi
- 9/10Smithtown High School EastGrades: 9-12Distance: 1.5 mi
Schools provided by the listing agent
- Elementary: St James Elementary School
- Middle: Nesaquake Middle School
- High: Smithtown High School-East
Source: OneKey® MLS as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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Estimated market value
$2,911,000
Get a cash offer in 3 minutes
Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
Estimated market value
$2,911,000
- New York
- Suffolk County
- Nissequogue
- 11780
- 317 Old Mill Road