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MLS ID KEY1056432Last updated Nov 2, 2026

Single Family

1 Bay Avenue

Active · Mamaroneck · Westchester County, NY 10538

Bedrooms
7 Beds
Bathrooms
7 Baths
Year built
1956
Est. monthly taxes
$14,613.06
Property gallery0 / 50
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About this home

An extraordinary waterfront estate in coveted Larchmont Manor, commanding breathtaking 270-degree panoramic views of Larchmont Harbor and the open waters of Long Island Sound. Beautifully positioned on 1.40 acres with expansive lawns, exquisite private gardens, a deep-water dock, and a charming waterfront gazebo, this stately brick seven-bedroom, seven-bath residence offers a rare combination of architectural elegance, exceptional privacy, and extraordinary coastal living. A gracious circular driveway introduces the home’s timeless architecture and impressive setting, surrounded by water and spectacular vistas. The beautifully landscaped grounds extend to the shoreline, where a charming waterfront gazebo, stone seawall, and private dock that easily accommodates a 50-foot boat create an exceptional setting for boating and waterfront recreation. The expansive, columned covered porches with rich wood-paneled ceilings offer generous outdoor living and dining spaces, perfectly positioned to enjoy the magnificent views and ever-changing scenery of the harbor. Inside, a dramatic two-story entrance foyer with a curved staircase sets the tone for the home’s gracious interiors, immediately drawing the eye to the water beyond. Generously proportioned, light-filled rooms feature walls of windows framing panoramic water views, elegant architectural millwork, beautifully refinished white oak floors, and multiple fireplaces. Designed for both sophisticated entertaining and comfortable everyday living, the main level offers multiple living and gathering spaces, a formal dining room, a contemporary kitchen with a sun-filled breakfast area, and an inviting family room opening directly to the waterfront porch and grounds. The second level is highlighted by a luxurious primary suite with spectacular water views, a private balcony, generous closets, and a beautifully appointed spa-inspired bath. Six additional bedrooms, a dedicated home office, and thoughtfully arranged bedroom wings provide exceptional space and flexibility. The renovated lower level extends the living and entertaining areas with spacious recreation rooms, a gym, and a billiards room with bar and direct access to the grounds. The home’s history is as remarkable as its setting. In 1934, Frederick Maximilian Emile Schaefer, former president of the F. & M. Schaefer Brewing Company, and his wife, Helene Hollis Schaefer, transformed the property into the stately Georgian-inspired brick Colonial that stands today. Avid sailors, Frederick and his brother Rudolph commuted by boat from the property’s private dock to the family’s Brooklyn brewery. Helene’s daily tradition of raising the American flag became a beloved landmark for sailors entering Larchmont Harbor, a legacy that still defines the home’s connection to the water. Just moments from Larchmont Manor Park and Beach, and an easy walk to the village shops and restaurants, the train, Chatsworth Avenue Elementary School, and the area’s beach and yacht clubs, 1 Bay Avenue pairs a private waterfront retreat with the convenience of village life. With its remarkable waterfront setting, private boating access, storied maritime heritage, and coveted Larchmont Manor address, it presents a rare opportunity to experience waterfront living at its finest.

Listing snapshot

Days on site
6 days
Listed on MLS
Oct 30, 2026
Full baths
6
Half baths
1
Annual property tax (MLS)
$175,356.73
Tax year
2026
Area source (MLS)
Public Records
Listing brokerage
Compass Greater NY, LLC
MLS ID
KEY1056432
Last updated
Nov 2, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
1956
Garage
Yes
Garage spaces
3
Parking
Attached, Garage
Water source
Public
Sewer
Public Sewer
Utilities
Cable Connected, Electricity Connected, Natural Gas Connected, Sewer Connected, Water Connected

Interior features

Basement
Finished, Full, Storage Space, Walk-Out Access
Heating
Forced Air, Radiant, Radiant Floor
Cooling
Central Air
Interior
Built-in Features, Cathedral Ceiling(s), Chandelier, Chefs Kitchen, Crown Molding, Double Vanity, Eat-in Kitchen, Entertainment Cabinets, Entrance Foyer, Formal Dining, His and Hers Closets, Kitchen Island, Marble Counters, Open Floorplan, Open Kitchen, Original Details, Pantry, Primary Bathroom, Recessed Lighting, Soaking Tub, Sound System, Speakers, Stone Counters, Storage, Tray Ceiling(s), Walk-In Closet(s)
Appliances
Cooktop, Dishwasher, Dryer, Freezer, Gas Oven, Gas Range, Microwave, Range, Refrigerator, Stainless Steel Appliance(s), Washer
Flooring
Hardwood, Tile
Fireplace
Yes
Fireplaces
5

Exterior features

Architectural style
Colonial
Construction materials
Brick
Exterior
Dock, Fire Pit, Garden, Juliet Balcony, Lighting
Private pool
No

Schools (MLS)

Elementary school
Chatsworth Avenue
Elementary school district
Mamaroneck
Middle school
Hommocks School
Middle school district
Mamaroneck
High school
Mamaroneck High School
High school district
Mamaroneck

School information is provided by the MLS. Confirm attendance eligibility with the school district.

Recent activity

  1. Listing updated from MLS
  2. MLS status changed
  3. First seen on this site

Location

Mamaroneck · Westchester County, NY 10538Show interactive map
1 Bay Avenue

Mamaroneck · Westchester County, NY 10538

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Estimate monthly payment

Loan detailsFixed-rate, fully amortizing loan. Edit the assumptions below; no market rate is supplied.
Property expenses (USD)
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Estimated monthly principal & interest—

Monthly property taxNot provided

Monthly association / maintenance feesNot provided

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Listing data is supplied by the MLS and may change without notice.