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MLS ID KEY1044020Last updated Sep 27, 2026

Single Family

138 Knollwood Avenue

Pending · Mamaroneck · Westchester County, NY 10543

Bedrooms
4 Beds
Bathrooms
3 Baths
Year built
1927
Est. monthly taxes
$1,542.17
Property gallery0 / 25
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About this home

Classic Tudor charm meets an easy, flexible layout in this character-filled Harbor Heights home. The main level is anchored by a dramatic living room with soaring cathedral ceilings, abundant natural light, and a wood-burning fireplace - the kind of space that immediately feels special. An adjoining dining area creates an easy flow for dinners and entertaining, while a separate den offers the perfect spot for a home office, cozy TV room, playroom, or reading lounge. Just off the dining room, the St. Charles kitchen features a sunny breakfast nook and full bath. A generous screened porch extends the living space outdoors and is ideal for morning coffee, summer dinners, or relaxed weekends at home. Direct access to the attached garage makes everyday life that much easier. Upstairs, the primary suite features a renovated ensuite bath and direct walk-up access to the attic, offering convenient additional storage. Three additional bedrooms and a full bath complete the second floor. Downstairs, the unfinished basement currently used for laundry, storage and as a workspace, could transform into a home gym or rec space. With its distinctive Tudor architecture, cathedral ceilings, fireplace, screened porch, and versatile spaces throughout, this is a home with the character that’s hard to recreate - and the opportunity to update in your own style is endless! Harbor Heights is a quiet, bike-riding neighborhood. Warren Park with playground, ball fields, tennis and pickleball is nearby, and train, school and town are nearby, too. Mamaroneck also enjoys Harbor Island Park on the sound with beach, boating, playground, bait shop, ball fields, dog park and numerous village events including concerts, fireworks, Sportime's clay tennis courts, pickleball courts, beach volleyball, softball and street parties. Enjoy!

Listing snapshot

Days on site
45 days
Listed on MLS
Sep 15, 2026
Full baths
3
Half baths
0
Annual property tax (MLS)
$18,506
Tax year
2025
Listing brokerage
Stetson Real Estate
MLS ID
KEY1044020
Last updated
Sep 27, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
1927
Garage
Yes
Garage spaces
2
Total parking
2
Parking
Driveway, Garage
Water source
Public
Sewer
Public Sewer
Utilities
Trash Collection Public

Interior features

Basement
Unfinished
Heating
Natural Gas
Cooling
Wall/Window Unit(s)
Interior
First Floor Full Bath, Beamed Ceilings, Cathedral Ceiling(s), Eat-in Kitchen, High Ceilings, Pantry, Washer/Dryer Hookup
Appliances
Dishwasher, Dryer, Electric Range, Refrigerator, Washer
Flooring
Carpet, Hardwood
Fireplace
Yes
Fireplaces
1

Exterior features

Architectural style
Tudor
Construction materials
Brick, Stucco
Private pool
No

Schools (MLS)

Elementary school
Mamaroneck 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 10543Show interactive map
138 Knollwood Avenue

Mamaroneck · Westchester County, NY 10543

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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)
MLS amounts are prefilled when available and can be edited. Confirm what fees include. Unknown fee frequencies cannot be converted automatically.Property expenses: MLS values where available; missing values stay blank.

Estimated monthly principal & interest—

Monthly property taxNot provided

Monthly association / maintenance feesNot provided

Estimated monthly total of entered costs—

Excludes insurance, mortgage insurance, special assessments and lender fees. MLS taxes may reflect abatements or exemptions and can change.

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