172 Brattle Street Cambridge — Photo 1 of 42
Recent Drop: $1,100,000
$15,700,000
172 Brattle Street, Cambridge, MA 02138
Cambridge, MA 02138
Beds
7
Baths
8.5
SqFt
7,737
Style
Single Family
Built
1880
Modern luxury meets history in this completely renovated home on coveted Brattle St in Harvard Square. Completely transformed by a local respected builder, this property seamlessly blends historic charm w/ modern convenience in its impeccable design and finishes. The main floor offers a grand staircase, high ceilings, spacious living and dining rooms, chef's kitchen w/ top appliances and adjacent family room, an oversized mudroom off the attached garage and 2 half baths. The 2nd level has a luxurious primary suite w/ spa-like bath and gracious dressing room, 5 ensuite bedrooms (or offices) and a large laundry room. The top floor hosts a versatile office/loft space and a half bath. The lower level is fully equipped w/ a gym, game room, family room, full bath, ample storage and guest suite w/ direct exterior access. The outdoor and indoor spaces blend seamlessly for easy living, w/ a spacious patio and beautiful yard designed by a celebrated landscape architect. A true Harvard Square gem
Key facts
It was listed on March 6, 2025. The price has come down from an original $16,800,000 to $15,700,000, most recently on September 26, 2025. The annual property taxes are $71,478 (2025 tax year). It sits on a 0.34-acre (14,826 sq ft) lot.
Market Value Analysis
* Analysis is based on 24 actively listed and recently sold comparable properties strictly within Cambridge, MA.
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Gas Water Heater • Range • Dishwasher • Disposal • Microwave • Refrigerator • ENERGY STAR Qualified Refrigerator • Wine Refrigerator • ENERGY STAR Qualified Dishwasher • Range Hood • Instant Hot Water
Neighborhood
Public Transportation • Shopping • Tennis Court(s) • Park • Walk/Jog Trails • Sidewalks
Geography
Property History
$15,700,000
Was $16,800,000
Sep 26, 2025
MLS® 73342079
$16,800,000
Mar 6, 2025
MLS® 73342079
Questions about this home
When was 172 Brattle Street, Cambridge listed?
172 Brattle Street, Cambridge was listed on March 6, 2025.
Has the price of 172 Brattle Street, Cambridge changed?
The price has come down from an original $16,800,000 to $15,700,000, most recently on September 26, 2025.
What are the property taxes for 172 Brattle Street, Cambridge?
The annual property taxes for 172 Brattle Street, Cambridge are $71,478 (2025 tax year).
How big is the lot at 172 Brattle Street, Cambridge?
172 Brattle Street, Cambridge sits on a 0.34-acre (14,826 sq ft) lot.
What is the status of 172 Brattle Street, Cambridge?
172 Brattle Street, Cambridge is actively listed for sale.
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
2,698 housing units permitted in the last 12 months (+3% vs the prior 12 months) — 1,713 in 5+ unit buildings
U.S. Census Bureau, Building Permits Survey (through Jul '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 7,737 sq ft principal dwelling). Lot size: 14,826 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 Agent: Maggie Gold Seelig
Listing Office: MGS Group Real Estate LTD
MLS® Number: 73342079
