Charming, colorful 1874 Victorian just a short walk to Harvard Sq. Preserved details include original wd fls, period mouldings, +hi ceilings blended w/contemporary features such as AC+ EV charging capability. LR has bay windows, crown moulding, built-ins. DR has wall of sliding glass doors to patio+fenced yard. EIK has black soapstone+white marble counters; built-in Canadian birch plywood banquette+cabinetry; tile backsplash; ss induction range, refrigerator, vent hood, + dw. Second fl has lg front bdrm, once occupied by W.E.B. DuBois while at Harvard; full tiled bath off hall; primary bdrm w/custom closets; hall linen+storage closets; laundry; + sunken office w/yd view. Top fl has small bdrm, flex room, + full bath w/spa tub+skylight. Pollinator garden + meandering grape arbor make the yard feel private + bucolic. Unfinished basement has systems + storage/workshop space. Just 1 block from the Charles River + 2 blocks from Harvard Sq., this is an ideal location with great walkability.
Property Details
Price:
$2,495,000
MLS #:
73438031
Status:
Pending
Beds:
3
Baths:
2.5
Type:
Single Family
Subtype:
Single Family Residence
Neighborhood:
riverside
Listed Date:
Oct 1, 2025
Finished Sq Ft:
2,130
Total Sq Ft:
2,130
Lot Size:
3,600 sqft / 0.08 acres (approx)
Year Built:
1874
See this Listing
Schools
Interior
Appliances
Range, Dishwasher, Refrigerator, Washer, Dryer, Range Hood
Bathrooms
2 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Fireplaces Total
1
Flooring
Wood, Tile
Heating
Forced Air, Natural Gas
Laundry Features
Second Floor
Exterior
Architectural Style
Victorian
Community Features
Public Transportation, Shopping, Park, Walk/Jog Trails, Bike Path, Highway Access, T-Station, University
Exterior Features
Porch, Deck, Patio, Fenced Yard, Garden
Parking Features
Off Street, Driveway
Parking Spots
1
Roof
Shingle
Financial
Tax Year
2025
Taxes
$17,212
Map
Community
- Address20 Flagg Street Cambridge MA
- CityCambridge
- CountyMiddlesex
- Zip Code02138
Subdivisions in Cambridge
Market Summary
Current real estate data for Single Family in Cambridge as of Nov 18, 2025
53
Single Family Listed
74
Avg DOM
1,100
Avg $ / SqFt
$4,121,920
Avg List Price
Property Summary
- 20 Flagg Street Cambridge MA is a Single Family for sale in Cambridge, MA, 02138. It is listed for $2,495,000 and features 3 beds, 3 baths, and has approximately 2,130 square feet of living space, and was originally constructed in 1874. The current price per square foot is $1,171. The average price per square foot for Single Family listings in Cambridge is $1,100. The average listing price for Single Family in Cambridge is $4,121,920. To schedule a showing of MLS#73438031 at 20 Flagg Street in Cambridge, MA, contact your Cornerstone Real Estate agent at 617-238-7400.
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Courtesy of Thalia Tringo & Associates Real Estate, Inc.. The property listing data and information set forth herein were provided to MLS Property Information Network, Inc. from third party sources, including sellers, lessors and public records, and were compiled by MLS Property Information Network, Inc. The property listing data and information are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLS Property Information Network, Inc. and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information set forth herein.
20 Flagg Street
Cambridge, MA