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11 Brown Street, Cambridge MA 02138

Cambridge, MA 02138 • Harvard Square
$12,995,000
Est. $72,514/month
6
Beds
6.5
Baths
7,258
Sq Ft
$1,790
Price/Sq Ft
0.34
Acres
2024
Year Built
Single Family Residence
Type
40
Days on Market
Active Listed May 11, 2026 • MLS# 73516411 Copied!

About this home

A masterpiece by Cafasso Design Group, this architectural work of art redefines luxury living. Tucked within a coveted enclave off Brattle Street, this home unfolds across lush, sculpted grounds framed by mature trees, offering an unparalleled serene retreat. A striking sculptural staircase serves as the dramatic centerpiece, while interiors masterfully blend contemporary Japanese, Scandinavian, Italian, and French influences.The eat-in chef’s kitchen features custom Italian walnut cabinetry, Calacatta Gold marble counters, dual sinks & dishwashers, a Gaggenau 400 Series double oven, and walls of glass. Generous bedrooms and spa-inspired baths deliver sanctuary, complemented by a glass-enclosed office and a family room featuring a floating gas fireplace. A dedicated lifestyle level boasts a gym, guest suite, and inviting spa with a Western Red Cedar sauna & steam shower. Outside, manicured grounds surround an outdoor kitchen, expansive deck, and inviting patio perfect for entertaining.

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Public Records

Current Owner

Owner 11 BROWN STREET LLC
Mailing Address 15 FRANCIS AVE, CAMBRIDGE, MA, 02138

Land Use

Use Code 101
Description Single Family
Zoning A-2
Style COLONIAL

Tax Information

Assessed Value $11,881,900

Assessment History

Year Land Building Total Change
FY2026 $3,214,600 $8,667,300 $11,881,900 —

Sale History

Date Price Book/Page
Dec 29, 2016 $10 68680/0402

Building Permit History

Issued Type / Work Status Value
Oct 24, 2021 Building: Alteration and Addition
One-Family
Complete renovation of existing single family home with addition in accordance with plans submitted with this application dated September7,…
By Martin Cafasso Designs
Permit #qu2z-8suj:143341 		Closed $1,675,000
Jul 11, 2021 Building: Alteration and Addition
One-Family
Interior Demolition  to studs. No structural alteration
By Martin Cafasso Designs LLC
Permit #qu2z-8suj:130036 		Closed $24,500
Data: City of Cambridge Open Data (data.cambridgema.gov)

Municipal Context: CAMBRIDGE

Property Data Comparison

Discrepancies found between MLS and assessor records.

Field Assessor MLS Match
Sqft 8,386 7,258 ✗
Year built 1,916 2,024 ✗
Match: address_exact (95.0% confidence) · Data as of Jun 1, 2026

Property Overview

Property Type
Single Family Residence
Listing Type
For Sale
Year Built
2024
Bedrooms
6
Full Bathrooms
6
Half Bathrooms
1
Living Area
7,258 sq ft
Total Rooms
10

Facts & Features

2 Car Garage

Home Facts

Type Residential
Style Single Family Residence
Year Built 2024
Living Area 7,258 sq ft
Lot Size 0.34 acres
Bedrooms 6
Full Baths 6
Half Baths 1
Total Rooms 10

Interior

Heating Forced Air, Heat Pump, Natural Gas, Hydro Air
Cooling Heat Pump
Flooring None
Appliances None
Fireplace None
Fireplaces 2
Basement Full, Finished, Walk-out Access, Interior Entry
Laundry None
Features Exercise Room, Game Room, Media Room, Sauna/steam/hot Tub, Wet Bar, Wired For Sound

Exterior

Construction None
Architecture Colonial, Contemporary
Roof Slate, Rubber
Features Deck, Patio, Professional Landscaping, Sprinkler System, Fenced Yard, Garden
Pool None
Spa None
Fencing Fenced/enclosed, Fenced
Patio/Porch Deck, Patio

Parking

Garage Spaces 2
Has Garage Yes
Features Detached, Paved Drive, Off Street, Paved
Total Spaces 6

Utilities

Electric None
Water Public
Sewer Public Sewer
Gas None
Other None

Financial

Annual Tax $79,252
Assessed Value $11,881,900

Interior Features

Flooring:
Appliances:
Interior Features: Exercise Room, Game Room, Media Room, Sauna/Steam/Hot Tub, Wet Bar, Wired for Sound
Windows:
Basement: Full, Finished, Walk-Out Access, Interior Entry
Laundry:
Security:

Construction & Materials

Style: Colonial, Contemporary
Year Built: 2024
Structure Type:
Exterior Materials:
Roof: Slate, Rubber
Foundation: Concrete Perimeter

Heating, Cooling & Utilities

Heating: Forced Air, Heat Pump, Natural Gas, Hydro Air
Cooling: Heat Pump
Hot Water:
Water Source: Public
Sewer: Public Sewer
Energy Features:

Exterior & Lot

Exterior Features: Deck, Patio, Professional Landscaping, Sprinkler System, Fenced Yard, Garden
Patio & Porch: Deck, Patio
Fencing: Fenced/Enclosed, Fenced
Other Structures:
Lot Features: Cul-De-Sac, Level
Road Surface: Paved

Parking & Garage

Garage Spaces: 2
Total Parking Spaces: 6
Parking Features: Detached, Paved Drive, Off Street, Paved

Special Features

Fireplaces: 2
Fireplace Type:
Community Amenities: Public Transportation, Shopping, Tennis Court(s), Park, Walk/Jog Trails, Medical Facility, Bike Path, Conservation Area, Highway Access, House of Worship, Marina, Private School, Public School, T-Station, University

Location

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Neighborhood

Harvard Square

11 Brown Street, Cambridge MA 02138

Cambridge, MA 02138

Walkability

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Nearby Schools

School District
Cambridge School District local
A-
🎓 Where Graduates Go Class of 2021
65% attend college
58% 4-Year 7% 2-Year 23% Out of State 7% Working
✓ School Safety 2024-25
1.2% Low
0.8% Suspensions 0.2% In-School 0.4% Emergency
↓ 4.3% below state avg
E

Elementary Schools

10 schools
St. Peter Elementary School
0.3 mi
Grades PK-08
Shady Hill School
0.6 mi
Grades PK-08
Cambridge Montessori School
0.7 mi
Grades PK-06
Cambridge Friends School
0.8 mi
Grades PK-08
A
Benjamin Banneker Charter Public School
1.1 mi | #100 of 824 | Score: 59.4
Dropped 79 spots from last year
+1.2 above state avg
352 students Less Diverse
Grades PK-06
A
Amigos School
1.4 mi | #45 of 352 | Score: 57.8
Improved 14 spots from last year
-0.5 below state avg
413 students Diverse
Diverse Student Body
Grades PK-08
C
Prospect Hill Academy Charter School
1.6 mi | #253 of 346 | Score: 45.9
Improved 29 spots from last year
-12.3 below state avg
890 students Diverse
High Graduation Rate Rising School College Ready Curriculum Diverse Student Body
Grades PK-12
Fayerweather Street School
1.6 mi
Grades PK-08
Lycee International de Boston/International School of Boston, Inc.
1.8 mi
Grades 01-12
A-
Graham and Parks School
0.5 mi | #242 of 824 | Score: 52.7
Improved 3 spots from last year
-5.5 below state avg
367 students Very Diverse
Diverse Student Body
Grades PK-05
M

Middle Schools

5 schools
Allium Montessori School
0.5 mi
Grades 01-06
A-
Putnam Avenue Upper School
1.1 mi | #103 of 352 | Score: 49.1
Dropped 24 spots from last year
-9.1 below state avg
283 students Very Diverse
Diverse Student Body
Grades 06-08
A
Rindge Avenue Upper School
1.1 mi | #67 of 352 | Score: 54.3
Dropped 2 spots from last year
-3.9 below state avg
292 students Diverse
Diverse Student Body
Grades 06-08
C+
Cambridge Street Upper School
2.0 mi | #214 of 352 | Score: 39.8
Dropped 26 spots from last year
-18.4 below state avg
301 students Very Diverse
Diverse Student Body
Grades 06-08
B+
Darby Vassall Upper School
2.2 mi | #118 of 352 | Score: 47.5
Improved 26 spots from last year
-10.7 below state avg
298 students Very Diverse
Rising School Diverse Student Body
Grades 06-08
H

High Schools

3 schools
Farr Academy School
1.6 mi
Grades 07-12
NuVu Innovation School
1.7 mi
Grades 08-12
B-
Community Charter School of Cambridge
2.3 mi | #178 of 346 | Score: 53.1
Dropped 57 spots from last year
-5.2 below state avg
251 students Diverse
7 sports • 202 athletes
High Graduation Rate College Ready Curriculum
Grades 06-12
Learn about these ratings
School data provided by BMN Schools

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Monthly Payment Breakdown

Principal & Interest $0
Property Tax $6,604
Homeowners Insurance $200
PMI (if <20% down) $0

Loan Summary

Total of 360 payments $0
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Payment Over Time

Interest
Principal
Year 1
95% Interest
Year 15
50/50
Year 30
95% Principal
* Estimates only. Actual payments may vary. Consult with a lender for accurate figures.

Property History

Property Timeline

🏠
Listed for Sale
May 11, 2026
$12,995,000
Original listing
Agent: Beth Dickerson Office: Gibson Sotheby's International Realty

Price & Status History

Date Event Price Change
May 11, 2026 New Listing Added $12,995,000 —

Market Statistics

Days on Market
40 days
Price per Sq Ft
$1,790

Tax History

Year Taxes Assessment
2026 $79,252 $11,881,900

Financial Details

Annual Property Tax
$79,252
Tax Year 2026
Assessed Value
$11,881,900

Listing Information

Listing Agent Beth Dickerson
Listing Office Gibson Sotheby's International Realty
Agent MLS ID BB904055
Office MLS ID BB5919
Listing Data Updated Jun 10, 2026 8:25 AM EDT
Listing information is deemed reliable but not guaranteed. Data provided by MLS Property Information Network, Inc. All information should be independently verified.

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