For sale

$2,575,000

9-9A Mount Auburn St #A, Cambridge, MA 02138

4beds

2,668sqft

$15,069/mo

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Condominium, Townhouse

Built in 2026

-- sqft lot

$-- Zestimate^®

$965/sqft

$325/mo HOA

What's special

Behind a storied exterior, this 2,668 sq. ft. preservation-award-winning townhouse, designed by world-renowned Graham Gund, blends modern refinement with understated elegance in the heart of Harvard Square. This sun-filled 4+ bedroom, 4.5-bath residence unfolds across an open-concept main level with oversized windows. Bespoke millwork and a fireplace anchor the space, alongside a stunning kitchen centered on a Taj Mahal quartz island with Thermador appliances and a tucked-away powder room. The primary spans the entire third floor, with vaulted ceilings, two custom closets, and a spa-inspired ensuite with tile-surround shower by Porcelanosa Boston. A second primary sits on the second level with a third bedroom, laundry, and full bath. A flexible lower level offers a fourth bedroom or guest suite with full bath, heated floors, and a media room. Exclusive-use side patio, parking for one, hardwired Sonos and CCTV. Minutes to the Charles and the T, with Harvard Square right out your door.

2 days

212

8

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 4
Bathrooms: 5
Full bathrooms: 4
1/2 bathrooms: 1

Primary bedroom

Features: Bathroom - Full, Skylight, Beamed Ceilings, Vaulted Ceiling(s), Walk-In Closet(s), Closet, Closet/Cabinets - Custom Built, Flooring - Hardwood, Window(s) - Picture, Recessed Lighting, Remodeled, Decorative Molding, Pocket Door
Level: Third
Area: 340
Dimensions: 15 x 22.67

Bedroom 2

Features: Bathroom - Full, Closet, Flooring - Hardwood, Recessed Lighting, Remodeled, Lighting - Overhead
Level: Second
Area: 163.49
Dimensions: 12.42 x 13.17

Bedroom 3

Features: Closet, Flooring - Hardwood, Recessed Lighting, Lighting - Overhead
Level: Second
Area: 259.51
Dimensions: 15.42 x 16.83

Bedroom 4

Features: Bathroom - Full, Closet, Flooring - Stone/Ceramic Tile, Window(s) - Picture, Recessed Lighting, Remodeled, Lighting - Overhead
Level: Basement
Area: 136.35
Dimensions: 13.75 x 9.92

Bathroom 1

Features: Bathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - With Tub, Skylight, Cathedral Ceiling(s), Beamed Ceilings, Flooring - Stone/Ceramic Tile, Countertops - Stone/Granite/Solid, Countertops - Upgraded, Double Vanity, Recessed Lighting, Remodeled, Lighting - Overhead, Soaking Tub
Level: Third
Area: 70.89
Dimensions: 9.67 x 7.33

Bathroom 2

Features: Bathroom - Full, Bathroom - Tiled With Tub & Shower, Flooring - Stone/Ceramic Tile, Countertops - Stone/Granite/Solid, Recessed Lighting, Remodeled, Lighting - Overhead
Level: Second
Area: 50.63
Dimensions: 7.5 x 6.75

Bathroom 3

Features: Bathroom - Full, Bathroom - Tiled With Shower Stall, Flooring - Stone/Ceramic Tile, Countertops - Stone/Granite/Solid, Recessed Lighting, Lighting - Overhead
Level: Second
Area: 45
Dimensions: 7.5 x 6

Dining room

Features: Closet/Cabinets - Custom Built, Flooring - Hardwood, Window(s) - Picture, Open Floorplan, Recessed Lighting, Remodeled, Lighting - Overhead, Flooring - Engineered Hardwood
Level: Main,First
Area: 137.81
Dimensions: 15.75 x 8.75

Kitchen

Features: Closet/Cabinets - Custom Built, Flooring - Hardwood, Window(s) - Bay/Bow/Box, Window(s) - Picture, Dining Area, Countertops - Stone/Granite/Solid, Countertops - Upgraded, Kitchen Island, Cabinets - Upgraded, Exterior Access, Open Floorplan, Recessed Lighting, Remodeled, Pot Filler Faucet, Lighting - Pendant
Level: Main,First
Area: 153.33
Dimensions: 19.17 x 8

Living room

Features: Bathroom - Half, Closet, Flooring - Hardwood, Window(s) - Picture, Cable Hookup, Exterior Access, High Speed Internet Hookup, Open Floorplan, Recessed Lighting, Remodeled
Level: Main,First
Area: 186.77
Dimensions: 13.75 x 13.58

Heating

Central, Electric, Ductless

Cooling

Heat Pump, Ductless

Appliances

Included: Microwave, Refrigerator, ENERGY STAR Qualified Refrigerator, ENERGY STAR Qualified Dishwasher, Range Hood, Cooktop, Oven, Other
Laundry: In Unit, Electric Dryer Hookup, Washer Hookup

Features

Bathroom - Full, Closet, Cable Hookup, Recessed Lighting, Lighting - Overhead, Game Room, Wet Bar, Wired for Sound, Other
Flooring: Tile, Hardwood, Other, Flooring - Stone/Ceramic Tile
Doors: Insulated Doors, Storm Door(s)
Windows: Insulated Windows
Has basement: Yes
Number of fireplaces: 1
Fireplace features: Living Room

Interior area

Total structure area: 2,668
Total interior livable area: 2,668 sqft
Finished area above ground: 2,668
Finished area below ground: 667

Property

Parking

Total spaces: 1
Parking features: Off Street, Assigned, Driveway, Exclusive Parking
Uncovered spaces: 1

Features

Entry location: Unit Placement(Street,Front,Walkout)
Patio & porch: Deck
Exterior features: Deck, Decorative Lighting, Fenced Yard, Garden, Rain Gutters, Professional Landscaping, Other
Fencing: Security,Fenced

Details

Zoning: O-2

Construction

Type & style

Home type: Townhouse
Property subtype: Condominium, Townhouse

Materials

Frame
Roof: Shingle,Metal,Other

Condition

Year built: 2026

Utilities & green energy

Electric: Circuit Breakers, 200+ Amp Service
Sewer: Public Sewer
Water: Public
Utilities for property: for Electric Range, for Electric Oven, for Electric Dryer, Washer Hookup

Green energy

Energy efficient items: Thermostat, Other (See Remarks)
Energy generation: Solar

Community & HOA

Community

Features: Public Transportation, Shopping, Park, Medical Facility, Laundromat, House of Worship, Private School, Public School, T-Station, University
Security: Other, Security System

HOA

Services included: Insurance, Maintenance Structure, Snow Removal, Reserve Funds
HOA fee: $325 monthly

Location

Region: Cambridge

Financial & listing details

Price per square foot: $965/sqft
Tax assessed value: $10,000
Annual tax amount: $9,999
Date on market: 7/22/2026
Exclusions: Staging Furniture Will Not Convey.

Estimated market value

Not available

Estimated sales range

Not available

Price history

Date	Event	Price
7/21/2026	Listed for sale	$2,575,000$965/sqft
Source: MLS PIN #73552987 Report a problem

Public tax history

Tax history is unavailable.

Monthly payment

Est. payment

Payment breakdown

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Principal & interest
$1,547
Mortgage insurance
$0
Property taxes
$170
Home insurance
$105
HOA fees
$0
Utilities
Not included

All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.

HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.

Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.

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