Condominium at 139 Sycamore St. # 139, Belmont MA 02478
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29 photos

$850,000

139 Sycamore St. # 139, Belmont MA 02478
Belmont, MA 02478
Listed by Wilson Group
Bedrooms
4
Bathrooms
2
Living area
1,832 sqft
Year built
1923

About this home

Spacious and impeccably maintained, this sun-filled 4 bed, 2 bath offers exceptional value in sought-after Belmont. Spanning the top two floors, the home features a flexible layout with an additional office/sunroom, private patio, rear deck, and rare attached garage parking. The expansive main level includes an open kitchen with stone counters, stainless steel appliances, gas cooking, abundant storage, and flows seamlessly into oversized living and dining rooms plus two bedrooms. Upstairs offers two additional bedrooms, in-unit laundry, and bonus space ideal for a home office or custom closet. Prime location near Waverley Square shops and dining, commuter rail, Harvard bus, and easy access to Routes 2 & 128/95.

Property details

MLS
MLS Property Information Network
MLS #
73514860
Property type
Condominium
Subdivision
N/A
Status
Active
Days on market
171
On market date
May 7, 2026
Stories
3
Total bathrooms
2
Garage spaces
1
Parking spaces
3
Lot size
N/A
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Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card.

Elementary
Daniel Butler
0.27 mi away · Grades 0-4
Nearest school -- attendance-zone data not available here
4.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
332
Student:teacher ratio
14.4:1
District
Belmont
Middle
Watertown Middle
0.87 mi away · Grades 6-8
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
531
Student:teacher ratio
9.8:1
District
Watertown
High
Watertown High
1.31 mi away · Grades 9-12
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
705
Student:teacher ratio
9.5:1
District
Watertown

Walkability

Blended score for Belmont's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).

81
Highly walkable
out of 100
EPA National Walkability Index
13.7 / 20 -- Above average walkable
Google Places amenity density
100 / 100
Restaurants & cafes20
Grocery stores5
Parks17
Schools20
Transit stops20
Pharmacies5

Market position

How this listing compares to current activity in Belmont, from live MLS data.

On the market 171 days -- 76 more days than Belmont's current average of 95 days.
For reference, the median list price across 206 active listings in Belmont right now is $844,700.

Mortgage calculator

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Est. monthly payment
$5,269/mo
$170,000 down
$680,000 loan
Principal & interest$4,410
Property tax (est.)$708
Home insurance (est.)$150

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Data source: Listing information provided by MLS Property Information Network via Trestle/CoreLogic. Last updated June 3, 2026.

Information herein deemed reliable but not guaranteed; all measurements, school assignments, HOA fees, taxes, and feature lists are approximate and should be independently verified. Equal Housing Opportunity.