25 Bay Street
City Island | William Avenue & William Avenue
Ownership
Single Family
Lot Size
75'x100'
Floors/Apts
1/1
Status
Active
Real Estate Taxes
[Per Annum]
$ 7,013
Building Type
House
Building Size
16'x30'
Year Built
1940
ASF/ASM
1,500/139
Property Description
ESTATE SALE — Offered is an exceptional 7,500 SQFT DOUBLE LOT with 5,625 SQFT of buildable FAR, located just steps from the water and offering beautiful views (including water views).
BACK ON THE MARKET.
This serene property presents extraordinary potential and undeniable value. Opportunities of this size are exceptionally rare on City Island, made even more compelling by its prime Bay Street location, with private beach access.
Do not let the current footprint deceive you — this home feels spacious, airy, and contemporary. The layout features three generously sized bedrooms, a large living room with bay windows and lovely water views, and an open-plan kitchen ideally suited for transformation into a chef’s kitchen. The adjoining bright and spacious dining room opens directly onto a large deck, creating an ideal setting for indoor-outdoor entertainment.
The potential is substantial; envision a second-story addition with sweeping water views, an additional deck, and even the possibility of a pool beneath the beautiful mulberry tree (inspirational only; all plans subject to DOB approval).
Not included in the square footage is a full basement with high ceilings, along with a finished den—perfect as a family room, home office, or guest suite—with the opportunity to add a full bathroom.
Estate sale — sold as is.
Additional Highlights:
• Low annual taxes: $7,013
• No flood insurance required
• Central HVAC
• Hardwood floors
• Private driveway
Contact the listing broker directly for additional information or to schedule a private showing. A walk-through video is available upon request.
_______________________________________________________________________________________________________________
The City Island Lifestyle
City Island is a rare coastal enclave within New York City — a close-knit village known for its yacht clubs, private beaches, art galleries, boutique shops, and celebrated waterfront dining.
Residents enjoy:
• A true beach-town atmosphere
• Low taxes with full city services
• Easy access to Manhattan by car or public transportation
• Local amenities including a library, post office, galleries, cafes, restaurants, and P.S. 175 City Island School
• A vibrant boating, social, and cultural community
It’s no surprise City Islanders rarely want to leave.
(As featured in recent New York Times coverage: “City Island, Bronx — A Seaside Enclave Within the City.”)
BACK ON THE MARKET.
This serene property presents extraordinary potential and undeniable value. Opportunities of this size are exceptionally rare on City Island, made even more compelling by its prime Bay Street location, with private beach access.
Do not let the current footprint deceive you — this home feels spacious, airy, and contemporary. The layout features three generously sized bedrooms, a large living room with bay windows and lovely water views, and an open-plan kitchen ideally suited for transformation into a chef’s kitchen. The adjoining bright and spacious dining room opens directly onto a large deck, creating an ideal setting for indoor-outdoor entertainment.
The potential is substantial; envision a second-story addition with sweeping water views, an additional deck, and even the possibility of a pool beneath the beautiful mulberry tree (inspirational only; all plans subject to DOB approval).
Not included in the square footage is a full basement with high ceilings, along with a finished den—perfect as a family room, home office, or guest suite—with the opportunity to add a full bathroom.
Estate sale — sold as is.
Additional Highlights:
• Low annual taxes: $7,013
• No flood insurance required
• Central HVAC
• Hardwood floors
• Private driveway
Contact the listing broker directly for additional information or to schedule a private showing. A walk-through video is available upon request.
_______________________________________________________________________________________________________________
The City Island Lifestyle
City Island is a rare coastal enclave within New York City — a close-knit village known for its yacht clubs, private beaches, art galleries, boutique shops, and celebrated waterfront dining.
Residents enjoy:
• A true beach-town atmosphere
• Low taxes with full city services
• Easy access to Manhattan by car or public transportation
• Local amenities including a library, post office, galleries, cafes, restaurants, and P.S. 175 City Island School
• A vibrant boating, social, and cultural community
It’s no surprise City Islanders rarely want to leave.
(As featured in recent New York Times coverage: “City Island, Bronx — A Seaside Enclave Within the City.”)
ESTATE SALE — Offered is an exceptional 7,500 SQFT DOUBLE LOT with 5,625 SQFT of buildable FAR, located just steps from the water and offering beautiful views (including water views).
BACK ON THE MARKET.
This serene property presents extraordinary potential and undeniable value. Opportunities of this size are exceptionally rare on City Island, made even more compelling by its prime Bay Street location, with private beach access.
Do not let the current footprint deceive you — this home feels spacious, airy, and contemporary. The layout features three generously sized bedrooms, a large living room with bay windows and lovely water views, and an open-plan kitchen ideally suited for transformation into a chef’s kitchen. The adjoining bright and spacious dining room opens directly onto a large deck, creating an ideal setting for indoor-outdoor entertainment.
The potential is substantial; envision a second-story addition with sweeping water views, an additional deck, and even the possibility of a pool beneath the beautiful mulberry tree (inspirational only; all plans subject to DOB approval).
Not included in the square footage is a full basement with high ceilings, along with a finished den—perfect as a family room, home office, or guest suite—with the opportunity to add a full bathroom.
Estate sale — sold as is.
Additional Highlights:
• Low annual taxes: $7,013
• No flood insurance required
• Central HVAC
• Hardwood floors
• Private driveway
Contact the listing broker directly for additional information or to schedule a private showing. A walk-through video is available upon request.
_______________________________________________________________________________________________________________
The City Island Lifestyle
City Island is a rare coastal enclave within New York City — a close-knit village known for its yacht clubs, private beaches, art galleries, boutique shops, and celebrated waterfront dining.
Residents enjoy:
• A true beach-town atmosphere
• Low taxes with full city services
• Easy access to Manhattan by car or public transportation
• Local amenities including a library, post office, galleries, cafes, restaurants, and P.S. 175 City Island School
• A vibrant boating, social, and cultural community
It’s no surprise City Islanders rarely want to leave.
(As featured in recent New York Times coverage: “City Island, Bronx — A Seaside Enclave Within the City.”)
BACK ON THE MARKET.
This serene property presents extraordinary potential and undeniable value. Opportunities of this size are exceptionally rare on City Island, made even more compelling by its prime Bay Street location, with private beach access.
Do not let the current footprint deceive you — this home feels spacious, airy, and contemporary. The layout features three generously sized bedrooms, a large living room with bay windows and lovely water views, and an open-plan kitchen ideally suited for transformation into a chef’s kitchen. The adjoining bright and spacious dining room opens directly onto a large deck, creating an ideal setting for indoor-outdoor entertainment.
The potential is substantial; envision a second-story addition with sweeping water views, an additional deck, and even the possibility of a pool beneath the beautiful mulberry tree (inspirational only; all plans subject to DOB approval).
Not included in the square footage is a full basement with high ceilings, along with a finished den—perfect as a family room, home office, or guest suite—with the opportunity to add a full bathroom.
Estate sale — sold as is.
Additional Highlights:
• Low annual taxes: $7,013
• No flood insurance required
• Central HVAC
• Hardwood floors
• Private driveway
Contact the listing broker directly for additional information or to schedule a private showing. A walk-through video is available upon request.
_______________________________________________________________________________________________________________
The City Island Lifestyle
City Island is a rare coastal enclave within New York City — a close-knit village known for its yacht clubs, private beaches, art galleries, boutique shops, and celebrated waterfront dining.
Residents enjoy:
• A true beach-town atmosphere
• Low taxes with full city services
• Easy access to Manhattan by car or public transportation
• Local amenities including a library, post office, galleries, cafes, restaurants, and P.S. 175 City Island School
• A vibrant boating, social, and cultural community
It’s no surprise City Islanders rarely want to leave.
(As featured in recent New York Times coverage: “City Island, Bronx — A Seaside Enclave Within the City.”)
Listing Courtesy of R New York
Care to take a look at this property?
Apartment Features
A/C [Central]
Outdoor
Patio
Building Details [25 Bay Street]
Ownership
Single Family
Service Level
None
Access
Walk-up
Block/Lot
5632/53
Building Size
16'x30'
Zoning
R3A
Building Type
House
Year Built
1940
Floors/Apts
1/1
Lot Size
75'x100'
Building Amenities
Driveway
Pool
Mortgage Calculator in [US Dollars]
This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market.
©2026 REBNY Listing Service, Inc. All rights reserved.
Additional building data provided by On-Line Residential [OLR].
All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer.
Fair Housing
