Active
150 Days on market
6 Mercer Circle Cambridge — Photo 1 of 37

6 Mercer Circle Cambridge — Photo 1 of 37

Recent Drop: $700,000

$5,500,000
$4,800,000

$4,800,000

6 Mercer Circle, Cambridge, MA 02138

Cambridge, MA 02138 — West Cambridge

Investor Analysis

Beds

4

Baths

4

SqFt

4,292

Style

Single Family

Built

1885

Tucked along one of the most sought-after streets in West Cambridge, between Harvard Square & the Charles River, this beautifully proportioned home blends historic character with everyday convenience. Mercer Circle, originally called Telephone Street, is part of a storied enclave developed by Gardiner G. Hubbard, founder of the National Geographic Society and 1st president of Bell Telephone Company. The property showcases a 29' covered wrap-around porch overlooking specimen plantings. Inside, gracious rooms are defined by tall windows & ceilings, fireplaces, and custom built-ins. Outside, the irrigated fruit gardens yield plums, blueberries, apples, and vegetables. Ideally located just 0.2 miles from BB&N’s Lower and Middle Schools and approximately one mile from Shady Hill School & BB&N’s Upper School. Properties on Mercer Circle are rarely offered, as residents tend to stay for generations, drawn by the tranquil setting, community, & enduring curb appeal.

Market Value Analysis

This Property
Size (SqFt) →Price →
This Property$1118/sqft
Local Avg (Cambridge)$908/sqft
23% AboveMarket Average

* Analysis is based on 23 actively listed and recently sold comparable properties strictly within Cambridge, MA.

Property Details

Financials

Original Price$5,500,000
Annual Taxes$29,805.79

Parking

Garage0
Off-Street2

Interior Specifications

Total Rooms13
Fireplaces2
Flooring--
BasementFull, Partially Finished, Walk-Out Access, Interior Entry

Climate & Utilities

HeatingForced Air, Natural Gas
CoolingCentral Air, Whole House Fan
WaterPublic
SewerPublic Sewer

Building & Exterior

Construction--
Roof--
FoundationStone, Brick/Mortar
Zoningres

Property & Lot

Acres0.22
SqFt Lot9,454
Lot FeaturesCorner Lot

Neighborhood

Public Transportation • Shopping • Tennis Court(s) • Park • Walk/Jog Trails • Medical Facility

Geography

Floorplan Breakdown

Structural Layout

Third
Bedroom 3Bedroom 4
Second
OfficeMaster BedroomBedroom 2
First
Living RoomDining RoomKitchen
Living Room
Lvl First
Dining Room
Lvl First
Kitchen
Lvl First
Office
Lvl Second
Master Bedroom
Lvl Second
Bedroom 2
Lvl Second
Bedroom 3
Lvl Third
Bedroom 4
Lvl Third

Property History

Price Drop
$4,800,000

Was $5,500,000

May 26, 2026

MLS® 73502038

Listed
$5,500,000

Apr 15, 2026

MLS® 73502038

Population

38,509

U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)

Median Household Income

$120K

U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)

Renter-Occupied Homes

58.1%

U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)

New Construction Permits — Middlesex County

2,667 housing units permitted in the last 12 months (-2% vs the prior 12 months) — 1,709 in 5+ unit buildings

U.S. Census Bureau, Building Permits Survey (through Jun '26)

ADU Potential

Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 900 sq ft (the lesser of 900 sq ft or half the 4,292 sq ft principal dwelling). Lot size: 9,454 sq ft.

Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.

Listing Provided By

Listing Agent: Gail Roberts, Ed Feijo & Team

Listing Office: Coldwell Banker Realty - Cambridge

MLS® Number: 73502038

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