Mt. Sinai Real Estate

Welcome to Mt. Sinai, a charming hamlet nestled in the heart of Suffolk County, New York. With its picturesque landscapes and tight-knit community, Mt. Sinai offers a serene escape from the hustle and bustle of urban life, making it an ideal location for families, retirees, and anyone seeking a tranquil lifestyle.

Located along the beautiful North Shore of Long Island, Mt. Sinai boasts stunning views and easy access to pristine beaches, parks, and recreational activities. The area is rich in natural beauty, with lush greenery, scenic trails, and the nearby Mount Sinai Harbor, where residents can enjoy kayaking, fishing, and breathtaking sunsets.

Mt. Sinai is also known for its excellent school system, providing top-notch education for children of all ages. The community takes pride in its commitment to fostering a supportive environment for families, with numerous local events and activities throughout the year that encourage neighborly connections and camaraderie.

For those who appreciate the arts and culture, Mt. Sinai is conveniently located near vibrant towns like Port Jefferson and Setauket, where you can explore charming boutiques, art galleries, and delightful dining options. Additionally, the proximity to major highways and the Long Island Rail Road makes commuting to New York City a breeze.

Whether you’re looking to buy your first home, downsize, or invest in a vacation property, Mt. Sinai offers a diverse range of real estate options. From cozy single-family homes to spacious estates, there’s something for everyone in this idyllic community. Discover the allure of Mt. Sinai and experience the perfect blend of suburban tranquility and coastal charm!

Newest Listings in Mt. Sinai

$525,000

2 Beds ⋅ 2 Baths ⋅ 1032395 MLS

(INSIDE PHOTOS COMING SOON) Welcome to this meticulously maintained Andover Model, ideally situated in a private location with no neighbors behind you. This beautiful 2-bedroom, 2-bath home features gleaming hardwood floors throughout and two tastefully updated bathrooms. The spacious living room and dining room combination opens through sliding doors to a sunny, south-facing patio complete with a retractable awning, creating the perfect space to relax or entertain in comfort throughout the seasons and all weather. The updated eat-in kitchen boasts granite countertops, while the generous primary suite offers a beautifully renovated bathroom and an oversized walk-in closet. Additional updates and features include a 4-year-old central air conditioning system, new hot water heater, new roof, six-panel doors, crown moldings, high hats throughout, new ceiling fans, Andersen windows, and fresh interior paint. The oversized garage includes a walk-up loft, offering endless possibilities as a private retreat, hobby room, home office, or additional storage. Enjoy a vibrant lifestyle with outstanding community amenities including a clubhouse, fitness center, tennis courts, bocce, and a full calendar of social activities.

18 Chippendale Drive, Mt. Sinai

$3,700,000

1031016 MLS

** RARE AUTO MEGA CENTER OPPORTUNITY ** One of Long Islands largest AUTOMOTIVE SERVICE & SALES MEGA MALL BUILDING available for Sale/Lease, containing multiple separate station(s) with AUTO BODY -TINTING -AUTO REPAIR(S) -AUTO PAINT SPRAYING & AUTO SALES. Property is GRANDFATHERED into its current ZONING position directly on one of Long Islands most heavily traveled EAST/WEST 5-LANE corridors, allowing your SIGNAGE to be viewed by OVER ~43,000 V.P.D. VEHICLES DAILY. Multiple OVERSIZED Signage staging points for unobstructed sight lines from entire highway. State Highway Dedicated TURNING LANE leading to building with ** (2) DUAL EGRESS OVERSIZED CURB CUTS** for easy customer access from highway. Included in sale is newly installed and permitted INTERIOR SPRAY BOOTH with new high efficiency lighting. Building has ** SIX (6) BAY DOORS, spaced into separate BUSINESS OPERATIONS CENTER(S), all remotely operated via door switches. Building has HIGH INTERIOR CEILINGS for lifts, allowing for TRUCK & LARGER VEHICLE service and Expansive, paved and level PARKING LOT for ~28 VEHICLES & SALES. Prime END-USER OPPORTUNITY for a one-stop, AUTOMOTIVE MECCA for talented Automobile Business Operators - or - (Medical/Retail) RE-DEVELOPMENT OPPORTUNITY, located on one of LONG ISLANDS PRIME COMMERCIAL & COMMUTER LONG ISLAND CORRIDORS (Call for Details) *** BRING YOUR BUSINESS HERE FOR 2026 ! ***

Mt. Sinai

$919,000

4 Beds ⋅ 3 Baths ⋅ 1027854 MLS

Tucked away at the end of a long private driveway on a beautifully manicured acre, this custom farmhouse-inspired colonial offers timeless charm with today's most sought-after finishes. A welcoming wraparound front porch sets the tone before stepping inside to rich hardwood floors, custom millwork, oversized Andersen windows, and beautifully designed living spaces that blend warmth with sophistication. The heart of the home is an absolutely stunning chef's kitchen featuring granite countertops, stainless steel Samsung appliances, quality cabinetry, and an effortless flow into the main living areas—perfect for everyday living and entertaining alike. Upstairs you'll find four spacious bedrooms, including an exceptional primary suite with triple closets and a beautifully renovated spa-inspired bath featuring dual vanities and an oversized dual rain shower. Every bathroom has been thoughtfully updated with timeless finishes. One of the home's most unforgettable features is the hidden bookcase passage leading to the unfinished third-floor attic—a rare space with unlimited potential. The unfinished lower level offers approximately 8 foot ceilings, outside entry, and endless possibilities for recreation, fitness, hobbies, or future expansion. Outside, enjoy nearly an acre of level property with a patio, underground sprinklers, intentional landscaping, and plenty of room to relax or entertain. Additional highlights include a NEW Biasi boiler and Riello burner, 2-zone central air, central vacuum, oversized garage, newer 50-year roof and gutters, and countless custom details throughout. All mechanical systems are young creating a completely move-in ready home. Located within the Mount Sinai School District, this is a home that combines privacy, craftsmanship, and everyday comfort in one exceptional package.

93 Chestnut Street, Mt. Sinai

$829,999

5 Beds ⋅ 4 Baths ⋅ 1024713 MLS

Welcome to 5 Fowler Lane, a beautifully maintained 4-bedroom, 3.5-bath Center Hall Colonial offering timeless style and modern updates in the heart of Mount Sinai. This spacious home features hardwood floors throughout, extensive crown molding, an inviting den with a fireplace, and a beautifully appointed eat-in kitchen with cherry wood cabinetry, granite countertops, an oversized center island, and a premium Rinnai exhaust fan. French doors lead to a private backyard with a deck, perfect for entertaining. Recent updates include a new roof, premium siding, and replacement windows. Additional highlights include natural gas heating, a cobblestone-lined driveway, an attached two-car garage, and elegant two-tone PVC fencing surrounding the expansive backyard. The neighborhood is walking distance to the Mount Sinai schools, and to Heritage Park as well as perfectly situated between Port Jefferson Village and Cedar Beach where you can enjoy fishing boating and swimming. North Shore Rail trail, 10 miles long, for biking or walking is just steps from the house. Combining classic charm with thoughtful improvements, this exceptional home offers comfort, style, and convenience in a highly desirable Mount Sinai location.

5 Fowler Lane, Mt. Sinai

$729,888

3 Beds ⋅ 2 Baths ⋅ 1025105 MLS

Welcome to this stunning expanded ranch situated on 0.82 acres, featuring a pristine in ground pool! The brand new updated kitchen boasts soft close cabinets, granite countertops and brand new appliances, highlighted by a SPACIOUS island. Enjoy the comfort of central AC, along with a new Roth oil tank and a 40 Gallon Buderus water heater and boiler. The property includes updated 200 amp electrical service and a six zone in ground sprinkler system. The expanded driveway leads to a generous four car garage, ensuring ample storage space. Inside, you'll find three bedrooms and two bathrooms, with the primary bathroom being newly updated. There’s also room for a home office or the potential for additional bedrooms. Conveniently located just three miles from the Port Jeff train station and ferry, this home is minutes away from Heritage Park, Trader Joe’s, Uncle Giuseppe’s, and the new Whole Foods coming soon. It’s also part of the highly regarded Mount Sinai School District. This gem won't last long!

4 Missouri Avenue, Mt. Sinai

$1,300,000

5 Beds ⋅ 3 Baths ⋅ 1025468 MLS

Welcome to this beautifully maintained 5 Bedroom, 2.5 Bath Colonial nestled on over 3 private acres, offering the perfect combination of classic charm, modern comfort, and exceptional space. The main level features a sun-filled living room with a fireplace, a warm and inviting den with a second fireplace, a formal dining room for entertaining, and a spacious eat-in kitchen designed for everyday living. A first-floor bedroom, private home office, and convenient half bath provide added flexibility for guests, remote work, or multigenerational living. Upstairs, the generous primary suite offers a walk-in closet and private full bath, while three additional bedrooms and another full bath provide plenty of space for family and guests. The fully finished basement adds even more versatility with a kitchenette, dining area, family room, and laundry area, making it ideal for extended living, recreation, or entertaining. Step outside to your own private backyard oasis featuring a fully fenced in-ground pool, an elegant stone patio, and expansive open grounds perfect for outdoor entertaining, recreation, or simply enjoying the peaceful surroundings. Complete with ample parking and a desirable blend of privacy and convenience to local amenities, this exceptional property offers the space, comfort, and lifestyle you've been searching for.

77 Shore Road, Mt. Sinai

$949,990

4 Beds ⋅ 3 Baths ⋅ 1024841 MLS

Welcome to 83 Shore Road, a beautifully maintained colonial set on over an acre of property in the heart of Mount Sinai with an adjacent buildable 1.35 acre lot available if desired. This recently renovated property offers many opportunities for expansion and development to fulfill any vision! This spacious 4-bedroom, 2.5-bathroom home offers a bright and inviting layout with multiple living spaces perfect for both everyday comfort and entertaining. Some features include hardwood and vinyl floors throughout the home, recessed lighting throughout the first floor, stainless steel appliances in the kitchen, fireplace, 200 amp electric, oil heating and central air conditioning. The oversized primary en suite offers high ceilings, walk-in closet and a full bathroom. Additionally, there is a partially finished basement and 2 car garage. The dining room and great room boast huge windows overlooking the inground pool, lush landscaping and mature trees that are complemented by a long driveway and private setting. Enjoy peaceful surroundings while being just minutes from beaches and the amenities of Port Jefferson Village. Don't miss out on this unique opportunity to own a beautiful home in one of Mount Sinai’s most desirable communities!

83 Shore Road, Mt. Sinai

$1,500,000

4 Beds ⋅ 4 Baths ⋅ 1024683 MLS

Exceptional luxury meets timeless elegance in this meticulously updated Colonial, nestled very privately within the prestigious South Harbor Woods community, in the award-winning Mount Sinai School District. Designed for those who appreciate both refined living and unforgettable entertaining, this remarkable residence offers more than 4,000 square feet of thoughtfully curated living space where every room has been crafted with comfort, sophistication, and functionality in mind. The heart of the home is an impressive chef's kitchen appointed with premium Thermador appliances, abundant custom cabinetry, an oversized center island, and an expansive dining area designed for effortless entertaining in addition to a formal dining room. Beautifully proportioned formal and casual living spaces flow seamlessly throughout, enhanced by integrated surround sound and exceptional attention to detail. The crown jewel of this remarkable residence is the spectacular primary suite addition, thoughtfully constructed in 2022—a feature that would be extraordinarily difficult to find elsewhere. Designed as a true private sanctuary, this magnificent retreat showcases 9 foot ceilings, a dramatic floor-to-ceiling dual-sided fireplace, an expansive custom walk-in closet, and a spa-inspired ensuite featuring a timeless rolled rim clawfoot soaking tub and oversized walk-in shower, creating the ambiance of a five-star luxury resort. The finished lower level offers exceptional versatility with a spacious recreation room, dedicated fitness room, full bath, abundant storage, and sliding glass doors providing direct access to the backyard. Outside, discover your own private resort where professionally designed landscaping, extensive paver patios, multiple outdoor entertaining and relaxation areas, an outdoor kitchen, hot tub, sparkling in-ground pool, and mature specimen plantings create an extraordinary setting for entertaining or quiet enjoyment. Additional premium features include a high-end integrated security camera system, new roof, gutters, heating system, exterior doors, garage doors, pool liner, and much more. Beautifully maintained and completely move-in ready, this exceptional South Harbor Woods residence offers luxury living at its finest. Thoughtfully priced based on current comparable sales and the home's extensive 2022 expansion, premium upgrades, and overall condition. A must see in person to truly appreciate.

6 Maureen Drive, Mt. Sinai

$1,250,000

4 Beds ⋅ 4 Baths ⋅ 1020327 MLS

Magnificent Custom Built Colonial in the Highly Sought After "Orchards" Community of Mount Sinai. This Meticulously Maintained Home Boasts; a Bright and Airy Open Floor Plan with a Gourmet Chefs Kitchen, Granite & Stainless High End Appliances, Wine Fridge, Hardwoods, Marble Fireplace, Main level Office/ 5th BR, 2nd floor Laundry room, Country Club Backyard, Heated Salt IG Pool with Slide, Built-in Fire Pit, Pavers, Oversized Deck Overlooking Very Private, Professionally Landscaped Grounds. CAC, Sprinklers, Oversized Driveway fits 8-10 vehicles. Needs nothing, Move in ready...*Truly a MUST SEE Diamond home!! *Taxes do not reflect STAR*

47 Grassland Circle, Mt. Sinai

$1,499,000

5 Beds ⋅ 3 Baths ⋅ 1020184 MLS

Welcome to 141 Harbor Beach Road in the desirable Harbor Beach community of Mount Sinai. This spacious 5-bedroom, 3-bath Colonial offers a rare opportunity to own a generously sized home in one of the area's most sought-after beachside neighborhoods. Featuring two kitchens, multiple living areas, a private office, a sun-filled sunroom, and a cozy fireplace, this home provides exceptional flexibility for extended family living, entertaining, or creating the lifestyle you've always envisioned. The thoughtful layout offers abundant space and endless possibilities to customize and make it your own. Enjoy the benefits of Harbor Beach living with beach rights and access to two private pathways leading directly to the beach, allowing you to take full advantage of the beautiful waterfront setting and coastal lifestyle. While the home awaits your personal updates and modern touches. Don't miss this chance to transform a spacious Colonial into the home you've always imagined, just moments from the beach, local parks, shopping, dining, and all that Mount Sinai has to offer.

141 Harbor Beach Road, Mt. Sinai

$599,000

2 Beds ⋅ 2 Baths ⋅ 1014871 MLS

Welcome to this beautiful Dover Lower End Unit! Offers an open floor plan that seamlessly blends the formal dining room and living room area, highlighted by a tray ceiling, crown molding, and a cozy fireplace with double sliding doors that lead to a private back yard. The eat-in kitchen is adorned with granite countertops and custom cabinetry. First-floor master bedroom with a master bath, an additional bedroom, and one full bath, Laundry room, and one-car garage. Enjoy the luxury condo living in the desirable 24-hour gated community, which includes an indoor/outdoor in-ground pool, tennis, bocce, playground, clubhouse w/gym, and a dog run. This home is located close to shops, schools, restaurants, and a park.

99 Constantine Way, Mt. Sinai

$995,000

4 Beds ⋅ 3 Baths ⋅ 1019194 MLS

You're just in time to customize your Long Island dream home! Located in the Mount Sinai School District, set back on a beautiful piece of property, just shy of an acre. This new construction home is waiting for you to make it your own.

58 Miller Place Middle Island Road, Mt. Sinai

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Listings courtesy of OneKey® MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of . 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.