luxury houses for sale Cos Cob, United States

Stunning Colonial, reimagined and rebuilt by Prime Renovations, offering exceptional craftsmanship & sophisticated finishes. This impressive residence features 5 en-suite bedrooms, 6 full and 1 half baths across four finished levels of living space.The gracious floor plan is enhanced by wide hallways, dramatic 5-foot-wide staircases, premium white oak flooring, abundant natural light, & distinctive ceiling details that showcase the builder's attention to detail. Elegant formal spaces include a welcoming living room and private office, while comfortable everyday living unfolds in beautifully designed gathering areas.The chef's kitchen, appointed with top-of-the-line appliances, custom cabinetry, a center island, and a thoughtfully designed built-in dining area for everyday living The inviting family room features a fireplace & a wall of sliding glass doors that open seamlessly to a private terrace & level backyard.The luxurious primary suite serves as a private retreat with a spacious dressing area and an exquisite spa-inspired bath. Three additional en-suite bedrooms & a spacious laundry room complete the 2nd level.The bright third level offers exceptional flexibility with a bonus room, additional bedroom, and full bath. A finished lower level adds approximately 1,250 square feet of living space and includes a recreation room and gym. Completing the property is two-car garage with loft space above. Set on .37 acres with a private terrace, level backyard and possible pool site, this turnkey residence offers a rare combination of luxury and functionality, all conveniently located close to train, parks, schools, and town.

Inviting four-bedroom Tudor enjoys a beautiful, private backyard elevated by bluestone patioand lush, mature plantings on a desirable road near schools, shops and trains. Spacious interior blends exquisite details with modern amenities including wood floors, four updated full baths and new windows. Welcoming front porch leads into living room with wood stove; dining room, chef's kitchen, with Bertazzoni range, patio access; family room, full bath and wonderful sunroom/office with sliders to patio. Primary suite with dressing room and fabulous bath with tub, shower and balcony; bedroom with loft, bedroom and full hall bath comprise second floor. Lower level provides bedroom suite with own entrance, ideal for au-pair/in-laws, laundry/mudroom and attached garage. *Also available for rent*

A unique opportunity awaits the new owner to put their own footprint on this lovely 1911 home. This house is beautifully sited on 2.27 acres in one acre zoning and cannot be subdivided. One can make a family compound here. High ceilings throughout, lovely sunroom which opens to the terrace and spacious yard with mature gardens. Magnificent alee of the most spectacular sycamore trees. Truly special property just a short distance to Greenwich High, YWCA and downtown. Two additional rooms on the third floor are presently used for storage.

Introducing ''The Ledges,'' a timeless 1924 Colonial gracefully set on an extraordinary 2.37-acre park-like property in the R-12 zone! Possible subdivision. Encompassing approximately 5,924 sq. ft., this absolutely charming residence is rich in character with exceptional ceiling height, elegant architectural details, and beautifully scaled public rooms designed for both grand entertaining and comfortable living. Featuring 7 bedrooms, 5 full and 2 half baths, and 6 fireplaces, the home blends classic elegance with warmth and charm throughout. A warm, paneled family room/study was thoughtfully added for former U.S. presidential candidate Wendell Willkie. Magnificently sited amid sweeping lawns and mature landscaping, ''The Ledges'' presents a rare opportunity to create a true legacy estate

Set on a beautifully landscaped property with a coveted Riverside address, 23 Riverside Lane offers 5 bedrooms, 4.1 baths, and approximately 4,300 square feet of thoughtfully designed living space. Built in 2011 & meticulously maintained & updated, the home features a modern, highly functional floorplan with high ceilings, bright and well-proportioned rooms, and an easy flow for everyday living and entertaining. The kitchen includes an incredible walk-in pantry, while the finished lower level provides flexible space for recreation, work, fitness, & guests. Stunning gardens create a private and serene setting, all in an exceptionally convenient Riverside location.

Spacious 2 bedroom, 2 bath corner unit with lots of light and a large oversized terrace. Enjoy the comforts of one level living in a building with a newer heating system and roof. Terrific location in central Greenwich close to shops, restaurants, and library. Garage parking is available for $85/month. One small pet allowed. Buyer pays a one time capital assessment of .5% of sale price at closing. Putnam Hill with an on site superintendent combines comfort and convenience.

Classic four bedroom Colonial in a convenient Riverside location has been thoughtfully renovated and expanded over the years. Entertain in the spacious living room with fireplace and the sun-filled dining room leading to the open plan kitchen, breakfast area, and family room. Step out from both main rooms through French doors to the beautiful covered deck with fireplace and flagstone surround leading out to the professionally landscaped English country grounds. Primary suite with walk-in closet, large bath, gas fireplace, and expansive windows. Three additional bedrooms, three additional full baths, and laundry room complete the second level. Special features include new Marvin windows and exterior doors throughout, new chimney, noise reduction exterior walls, and updated electrical and plumbing. Exterior painting of the house and oversized two-car garage completed in 2025.

HIGHEST & BEST Monday 6/29 by 11AM. First time on the market in over 50 years, this exceptional 1.08-acre property offers a rare opportunity. Set high on an elevated site with desirable east-west exposures, the property is home to the historic Laurence McGuire House, one of the few remaining examples of Spanish Eclectic architecture in Greenwich. The existing 4,366-square-foot residence features 4 bedrooms and presents an extraordinary opportunity to restore, renovate, or expand a significant architectural landmark. Alternatively, the premier setting, served by all town utilities, offers an exceptional canvas for a new custom estate in a highly sought after location. BEING SOLD ''AS IS''.

Nestled within the sought-after Putnam Park community in the heart Greenwich, this sun-drenched 2-bedroom, 2-bathroom co-op offers effortless, single-level living in a serene, park-like setting. Spanning over 1,200 square feet, the residence features three exposures, filling the home with natural light throughout the day. The open floor plan creates a seamless flow between living and dining spaces, complemented by an updated kitchen outfitted with stainless steel appliances--ideal for both everyday living and entertaining. Thoughtfully renovated bathrooms add a modern touch, while an oversized in-unit washer and dryer provide everyday convenience. Step outside to a private bluestone terrace--perfect for morning coffee or evening relaxation. Set on 13 beautifully landscaped acres, Putnam Park is a 194-unit community just moments from Greenwich Avenue's shops, dining, and transportation, with Manhattan approximately 45 minutes away. With no stairs and true one-floor living, this home offers the perfect blend of comfort, style, and convenience in one of Greenwich's most desirable locations.

A rare waterfront estate of true scale and presence, this reimagined coastal masterpiece commands 1.6 acres on the Long Island Sound with sweeping, unobstructed horizon views. Rebuilt from the foundation up, the home delivers level beachfront living with powerful architectural lines, floor-to-ceiling glass, and a seamless connection to the water at every turn. The approach opens to a 19-foot entry and a 21-foot great room that presents the Sound as a moving canvas of light and color. Terraces, manicured grounds, and a heated Gunite pool extend the living space outdoors, creating a private resort environment ideal for year-round enjoyment. Six ensuite bedrooms and two half baths include a serene primary wing with balcony, steam shower, and sauna. Savant smart-home systems geothermal efficiency, and refined materials anchor the residence in modern comfort and longevity. A sandy private beach, deep-water dock, and protected cove support boating, paddleboarding, kayaking, swimming, and quiet waterfront mornings. This is coastal living without compromise. Infinity by the Sea. A legacy property where luxury meets the horizon.

Located minutes from schools, parks, and shopping in the North Mianus school district, this home delivers on both location and livability. The open floor plan centers around a vaulted-ceiling living room, with hardwood flooring flowing throughout and a kitchen outfitted with brand-new stainless steel appliances. Three bedrooms plus a flexible office/nursery and a family room make for room to spread out. Outside, an oversized deck overlooking a lush, expansive yard is tailor-made for entertaining -- and with .35 acres, the potential for expansion is very real.

Well-built classic w/ a fresh, dramatic addition and renovation completed in 2006. This sun-filled home features a formal living room w/ fireplace, generous formal dining room, and a fabulous family room w/ double height ceiling, adjacent to the large, bright eat-in kitchen. Spectacular primary bedroom suite w/ great closets & bath. Four additional bedrooms and 3 baths. Oversized 2-car garage enters into a mudroom/pantry with generous built-ins. Partially finished basement w/bath offers great opportunity for additional recreation space. A large, level backyard with stone wall and terrace provides lovely, private entertaining space. Top it off with a full-house generator, central location near Binney Park, train stations, Riverside and Eastern Middle Schools, this is a true gem for a family

Presenting a rare Riverside home, this SBP Homes masterpiece, custom-built in 2009, is now on the market for the first time. Designed to capture breathtaking water views and stunning sunsets. Situated in a peaceful private association within the desirable 1-acre zone off Indian Head Road. Manhattan skyline in the distance, regular Summer firework displays can be seen from Rye Playland as the perfect dinner or outside fireplace back drop. Egrets, herons and duck will share your view year round! The main level boasts a spacious eat-in kitchen and family room, leading to a butler's pantry, dining room, and light filled formal living room. A beautifully appointed oak-paneled office with Long Island Sound views adds a touch of sophistication. Upstairs, the primary suite offers panoramic view accompanied by three family bedrooms and a convenient laundry room. The third floor features an additional office, guest space, and a full bathroom. The finished basement includes a wine room, playroom/bunk room, gym, full bath, and sports storage, all with no flood history. Additionally, this home includes a 2-car garage and a generator, making this Riverside residence a perfect blend of luxury and functionality. Conte and Conte designed landscaping and hardscaping enhances the gardens and entertaining areas.

Tucked within the secluded Indian Point Association, this 1.55-acre waterfront sanctuary in coveted Riverside invites you to imagine the lifestyle that you have always wanted. From its sweeping southwestern vantage point, the property opens to mesmerizing views of Long Island Sound-a living canvas that shifts with every season, every tide, every change of light. A charming 1949 built house sits on the site: 5 beds/3.1 baths, 4,324 sq ft renovated in 2013, with abundant light throughout. New elevation certificate and survey marking septic and wetlands. First floor bed/bath and family room are actually up about 6 steps from the first floor, off the kitchen. Mudroom/laundry room and garage are about 6 steps down from the kitchen. Also listed for rent, $16,000 per month, GMLS# 125258

Perfectly designed and built to meet the needs of today's buyer. Move right into this brand new 6,500 SF luxury home on Bella Lane a new private cul-de-sac off Sheephill Road, built by renowned builder Lino Marcal. This high-design residence features 6 bedrooms plus office, 6.1 baths, high ceilings throughout, 4 fireplaces, wine cellar, media room, and a beautiful three-season porch. Primary suite- dual walk-in closets; all closets fully outfitted. A truly unique opportunity. Don't miss this exceptional home.

Unlock the potential of this diamond in the rough in this PRIME Riverside location! Spacious and sun-filled 4 bedroom home overlooking Binney Park. Living room with fireplace, eat-in-kitchen, large family room adjacent to kitchen. Sun-room overlooks the generous slate patio and fenced-in yard. Three bedrooms on the first floor, with Primary suite on the second floor. Huge family room in the walkout lower level with fireplace and bathroom. Close to everything....schools, train, stores and Perot Library. The plot is .38 of an acre -16,553 square feet- which allows the construction of a new house of 5,269 square feet.

Extraordinary property. Exceptional location. A once-in-a- generation offering in one of Greenwich's most desirable in-town neighborhoods. Magnificently sited on 1.17 park-like acres along the sweeping curve of one Greenwich's most coveted cul-de-sacs, this custom-built residence offers an unparalleled combination of privacy, scale and convenience, just moments from top-rated schools, downtown Greenwich, fine dining, shopping, and Metro-North. Designed with timeless architecture and gracious proportions, this elegant six-bedroom, five-bath home showcases exceptional craftsmanship and remarkable flexibility for today's lifestyle. A distinctive feature is the private suite with its own driveway, entrance, and parking area--ideal for an in-law or nanny suite, home office, or multigenerational living. The breathtaking grounds are equally impressive, featuring sweeping lawns and an expansive, level backyard perfectly suited for entertaining, recreation, or future enhancements. An exceptional opportunity to own a legacy property where timeless elegance, extraordinary grounds and limitless potential converge in the heart of Greenwich.

Set on 1.21 acres, this beautifully maintained home has exceptional indoor and outdoor living designed for entertaining. Home was completely taken down to the studs in 2017. The freshly painted interior offers top-of-the-line finishes and a flexible floor plan. The main level features a private office with Murphy bed, dining room with soaring ceilings, and a cozy living room with wet bar and fireplace. Open-plan gourmet kitchen, breakfast area, and family room flow seamlessly to an expansive terrace with multiple seating areas, an outdoor kitchen, and fire pit, creating an ideal setting for gatherings throughout the year. The gorgeous primary suite features a spa bath with sauna, walk-in closet, and floor-to-ceiling windows overlooking the property. Two additional bedrooms share a full bath, while two versatile bonus rooms can be customized to fit your needs. They would make a great nursery, playroom, second office, or gym. Other highlights include an outdoor shower, space for a climbing frame and golf net, and an attached two-car garage. This property provides privacy and convenience to everything Greenwich has to offer.

Positioned along the crest of the hill to capture southern exposure and serene treetop views, this mid-century residence was thoughtfully designed by noted architect Walther Prokosch as his family home. Prokosch is perhaps best known as one of the architects behind the iconic JFK Pan Am Terminal, and his vision is evident throughout this distinctive property. The vaulted living and dining room is wrapped in walls of glass, flooding the interiors with natural light and creating a seamless connection to the surrounding landscape.The updated galley kitchen features modern appliances, a built-in banquet and sliders opening to a bluestone terrace, providing effortless indoor-outdoor living and entertaining. A private first-floor primary suite opens directly to the gardens, while additional first-floor rooms, ideal as bedrooms or home offices, share a full bath. The second floor offers two spacious double bedrooms and an additional full bath, creating a private retreat for family or guests. Mature natural gardens frame the property, enhancing the sense of privacy and tranquility. Set on an oversized .41-acre lot in an R-7 zone and only steps to Old Greenwich's parks, library, train, and village amenities. A rare opportunity to own an architecturally significant Mid-Century Modern home in one of Old Greenwich's most coveted neighborhoods.

Welcome to Stone Heron Farm, an extraordinary 74+ acre estate offered as five parcels, creating one of the most versatile and rare compound opportunities in Connecticut. Tucked away on a quiet country road, 12 Jackson Road combines timeless New England charm with exceptional land value, privacy and multi-use potential. The main residence, an updated 1806 Cape, features exposed beams, rich wide-plank flooring, 3 bedrooms, 3 baths, a main level master suite, 4 fireplaces and a wraparound deck creating a warm, inviting atmosphere with a sophisticated farmhouse flair. The chef's kitchen is a culinary dream with handcrafted cabinetry, granite countertops, and top-of-the-line SubZero and Wolf appliances. A separate guest cottage with kitchen and bath offers private accommodations for visitors, extended family, or creative studio use. A large workshop adds further utility for hobbyists, artists, or equipment needs. Across the estate, enjoy scenic walking trails, stone walls, open meadows and wooded acreage. A beautifully sited pond house overlooking the water provides a peaceful retreat for year-round enjoyment and breathtaking views. Multiple barns, paddocks, and cleared pastures offer ideal conditions for horses, small livestock, gardening, or future agricultural use. Possibilities include a multi-home compound, expanded equestrian facilities, conservation strategies, or simply a private sanctuary. A truly exceptional offering with endless potential. Convenient to the Connecticut shoreline, New Haven, Middletown, Route 9 and commuter routes, yet wonderfully secluded, this estate is perfect for buyers seeking privacy, creativity, and a lifestyle deeply connected to nature. A private hangar at an FBO may be included.

DEER PARK WOODSIDE: This distinguished 1930's brick Georgian is set on a serene, oversized lot within Deer Park Association, embodying the timeless architectural presence of a classic pre-war brick manor. Originally designed as an elegant six-bedroom, six-bath residence, the home offers an exciting opportunity to be reimagined for its next chapter. The exceptional grounds unfold across expansive, manicured lawns with desirable western exposure, framed by stone walls, mature trees, and a pool. Completing the estate is a three-bedroom cottage, providing additional flexibility. Ideally serviced by public gas, water, and sewer allowing for ease of development. Perfectly positioned near schools, clubs, houses of worship, and Greenwich Avenue. Lot is 2.02 acres in RA-1. FAR = 11,878+/-

Beautifully designed & maintained, this stylish home is tucked away on a quiet street in Old Greenwich. An inviting front porch welcomes you into well appointed interiors featuring soaring 12 foot ceilings in the living/dining rooms, a fireplace, custom built-ins, and abundant natural light. A gourmet chef's kitchen outfitted with high-end appliances, quartz countertops & a generous center island. The family room/playroom just off the kitchen creates the perfect setting for everyday living. Upstairs offers a primary BR along with 3 additional BRs & 2 full baths. Enjoy entertaining on the back deck or around the stone fire pit all surrounded by mature landscaping. Fenced yard & finished garage. Ideally located close to town, beach & schools. Move right in & enjoy the best of Old Greenwich!