Active
555 Days on market
172 Brattle Street Cambridge — Photo 1 of 42

172 Brattle Street Cambridge — Photo 1 of 42

Recent Drop: $1,100,000

$16,800,000
$15,700,000

$15,700,000

172 Brattle Street, Cambridge, MA 02138

Cambridge, MA 02138

Investor Analysis

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

Market Value Analysis

This Property
Size (SqFt) →Price →
This Property$2029/sqft
Local Avg (Cambridge)$884/sqft
130% AboveMarket Average

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

Property Details

Financials

Original Price$16,800,000
Annual Taxes$71,477.77

Parking

Garage2
Off-Street4

Interior Specifications

Total Rooms17
Fireplaces1
FlooringWood, Tile, Carpet, Marble, Hardwood, Stone / Slate, Engineered Hardwood
BasementFull, Finished

Climate & Utilities

HeatingCentral, Forced Air, Radiant, Heat Pump, Hydro Air, Hydronic Floor Heat(Radiant), ENERGY STAR Qualified Equipment, Air Source Heat Pumps (ASHP)
CoolingCentral Air, 3 or More, High Seer Heat Pump (12+), ENERGY STAR Qualified Equipment, Air Source Heat Pumps (ASHP), Whole House Fan
WaterPublic
SewerPublic Sewer

Building & Exterior

ConstructionConventional (2x4-2x6)
RoofShingle, Rubber, Metal
FoundationConcrete Perimeter, Block
ZoningA-1

Property & Lot

Acres0.34
SqFt Lot14,826
Lot FeaturesCorner Lot, Level

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

Price Drop
$15,700,000

Was $16,800,000

Sep 26, 2025

MLS® 73342079

Listed
$16,800,000

Mar 6, 2025

MLS® 73342079

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 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 Provided By

Listing Agent: Maggie Gold Seelig

Listing Office: MGS Group Real Estate LTD

MLS® Number: 73342079

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