$2,495,000
OPEN THU 12PM - 1:30PM

20 Flagg St Cambridge, MA 02138

Riverside Neighborhood

Estimated payment $14,662/month

3 Beds
2.5 Baths
2,130 Sq Ft
$1,171 Price per Sq Ft

Highlights

  • Deck
  • Wood Flooring
  • 1 Fireplace
  • Property is near public transit
  • Victorian Architecture
  • 2-minute walk to Corporal Burns Park

About This Home

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.

Listing Agent

Thalia Tringo

Thalia Tringo & Associates Real Estate, Inc. Listed on: 10/01/2025

Open House Schedule

Home Details

Home Type

  • Single Family

Est. Annual Taxes

  • $17,212

Year Built

  • Built in 1874

Lot Details

  • 3,600 Sq Ft Lot
  • Fenced Yard
  • Garden
  • Property is zoned C-1

Home Design

  • Victorian Architecture
  • Brick Foundation
  • Stone Foundation
  • Shingle Roof

Interior Spaces

  • 2,130 Sq Ft Home
  • 1 Fireplace
  • Home Office

Kitchen

  • Range with Range Hood
  • Dishwasher

Flooring

  • Wood
  • Tile

Bedrooms and Bathrooms

  • 3 Bedrooms
  • Primary bedroom located on second floor

Laundry

  • Laundry on upper level
  • Dryer
  • Washer

Unfinished Basement

  • Basement Fills Entire Space Under The House
  • Interior Basement Entry

Parking

  • 1 Car Parking Space
  • Driveway
  • Open Parking
  • Off-Street Parking

Outdoor Features

  • Bulkhead
  • Deck
  • Patio
  • Porch

Location

  • Property is near public transit
  • Property is near schools

Utilities

  • Forced Air Heating and Cooling System
  • Heating System Uses Natural Gas

Listing and Financial Details

  • Assessor Parcel Number M:00130 L:00087,408347

Community Details

Recreation

  • Park
  • Jogging Path
  • Bike Trail

Additional Features

  • No Home Owners Association
  • Shops

Home Details

Home Type

Single Family

Est. Annual Taxes

$17,212

Year Built

Built in 1874

Lot Details

0

Listing Details

  • Property Type: Residential
  • Property Sub Type: Single Family Residence
  • Architectural Style: Victorian
  • Year Built: 1874
  • Year Built Details: Approximate
  • Special Features: 257

Interior Features

  • Flooring: Wood, Tile
  • Interior Amenities: Home Office
  • Fireplace YN: Yes
  • Fireplaces: 1
  • Appliances: Range, Dishwasher, Refrigerator, Washer, Dryer, Range Hood
  • Total Bedrooms: 3
  • Room Bedroom2 Level: Second
  • Room Bedroom3 Level: Third
  • Full Bathrooms: 2
  • Half Bathrooms: 1
  • Total Bathrooms: 3
  • Room Master Bedroom Level: Second
  • Bathroom 1 Level: First
  • Bathroom 2 Level: Second
  • Bathroom 3 Level: Third
  • Room Dining Room Level: First
  • Room Kitchen Level: First
  • Laundry Features: Second Floor
  • Room Living Room Level: First
  • Room Office Level: Second
  • Basement: Full, Interior Entry, Bulkhead, Unfinished
  • Above Grade Finished Sq Ft: 2130
  • Living Area: 2130
  • Spa YN: No
  • MAIN LO: AC1102

Exterior Features

  • Exterior Features: Porch, Deck, Patio, Fenced Yard, Garden
  • Fencing: Fenced
  • Foundation Details: Stone, Brick/Mortar
  • Home Warranty YN: No
  • Patio And Porch Features: Porch, Deck, Patio
  • Roof: Shingle
  • Waterfront YN: No

Garage/Parking

  • Garage YN: No
  • Open Parking YN: Yes
  • Parking Features: Off Street, Driveway
  • Total Parking Spaces: 1

Utilities

  • Sewer: Public Sewer
  • Cooling: Central Air
  • Heating: Forced Air, Natural Gas
  • Cooling Y N: Yes
  • Electric: Circuit Breakers
  • Heating YN: Yes
  • Water Source: Public

Condo/Co-op/Association

  • Association YN: No
  • Community Features: Public Transportation, Shopping, Park, Walk/Jog Trails, Bike Path, Highway Access, T-Station, University
  • Senior Community YN: No

Lot Info

  • Parcel Number: M:00130 L:00087,408347
  • Zoning: C-1
  • Farm Land Area Units: Square Feet
  • Lot Features: Other
  • Lot Size Acres: 0.08
  • Lot Size Sq Ft: 3600
  • Lot Size Units: Acres
  • Property Attached YN: No

Tax Info

  • Tax Year: 2025
  • Tax Annual Amount: 17212

Multi Family

  • Basement Included Sq Ft: No

Map

Range of Values:

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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $17,212 $2,710,500 $1,257,200 $1,453,300
2024 $15,989 $2,700,800 $1,309,300 $1,391,500
2023 $14,959 $2,552,700 $1,333,600 $1,219,100
2022 $14,236 $2,404,700 $1,325,400 $1,079,300
2021 $13,478 $2,304,000 $1,300,400 $1,003,600
2020 $12,655 $2,200,800 $1,249,500 $951,300
2019 $11,535 $1,942,000 $1,063,100 $878,900
2018 $11,312 $1,798,400 $959,600 $838,800
2017 $11,030 $1,699,600 $914,700 $784,900
2016 $10,343 $1,479,700 $762,800 $716,900
2015 $10,140 $1,296,700 $655,800 $640,900
2014 $10,360 $1,236,300 $604,000 $632,300
Source: Public Records

Property History

Date Event Price Change Sq Ft Price
10/01/2025 10/01/25 For Sale $2,495,000 -- $1,171 / Sq Ft
Source: MLS Property Information Network (MLS PIN)

Purchase History

Date Type Sale Price Title Company
Deed $1,258,150 --
Deed -- --
Deed $1,218,600 --
Deed $490,000 --
Deed $405,000 --
Deed $245,700 --
Source: Public Records

Mortgage History

Date Status Loan Amount Loan Type
Open $1,000,000 Purchase Money Mortgage
Previous Owner $974,880 Purchase Money Mortgage
Previous Owner $340,000 No Value Available
Previous Owner $324,000 Purchase Money Mortgage
Previous Owner $191,250 No Value Available
Previous Owner $195,000 Purchase Money Mortgage
Source: Public Records

Source: MLS Property Information Network (MLS PIN)

MLS Number: 73438031

MLS Property Information Network (MLS PIN)

APN: CAMB-000130-000000-000087

Massachusetts Middlesex County Cambridge 02138 Riverside

20 Flagg St, Cambridge, MA

This home is located at 20 Flagg St, Cambridge, MA 02138 and is currently priced at $2,495,000, approximately $1,171 per square foot. This property was built in 1874. 20 Flagg St is a home located in Middlesex County with nearby schools including Prospect Hill Academy Charter School and Saint Paul's Choir School.

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

MLS Property Information Network (MLS PIN) The property listing data and information, or the Images, 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, and the Images, 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, or as to the accuracy of any of the Images, set forth herein.

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Thalia Tringo
Listing Agent
Thalia Tringo
Section Image
Thalia Tringo & Associates Real Estate, Inc.
(508) 665-2548