Primary bedroom
- Level
- Second
- Features
- Bathroom - Full · Walk-In Closet(s) · Flooring - Hardwood · Balcony - Exterior · Recessed Lighting · Slider
21 Keith St #2 · Watertown
For sale
FOR SALE · MLS #73579006
$1,249,000
- beds
- 3
- baths
- 3.5
- sqft
- 2,136
21 Keith St #2
Watertown, MA 02472
LOCATION
Property location
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21 Keith St #2, Watertown, MA 02472Open Street View
Belmont St to Arlington St, to Keith St, 1 mile to Watertown Mall, 2.3 mile to Harvard Square.
- Home type
- Condominium
- Interior living area
- 2,136 sqft
- Year built
- 2026
- Lot size
- 6,098 sqft (about 0.14 acres)
- Parking spaces
- 3
- Price per sqft
- $585/sqft
- HOA fee
- $1 · Monthly
About this home
Experience modern living in this newly constructed townhouse located in the highly sought-after Mount Auburn/East Watertown neighborhood, just steps from the Cambridge line. Enjoy easy access to Harvard Sq., Arsenal Yards, &public transportation, w #73 bus to Harvard Sq. only moments away. Nestled on a quiet residential street, this three-level home offers a bright, open, & thoughtfully designed floor plan. The main level features a spacious open-concept kitchen, dining, and living area. The living room opens directly to a rear porch and private backyard. The upper level includes two luxurious primary suites, each w walk-in closets. The rear suite boasts a private balcony overlooking the backyard. A versatile bonus room & convenient laundry room complete this floor. The lower level provides additional living space with a generously sized bedroom, a full bathroom featuring vanities, and a comfortable family room.
Listed by Nathan Long · Coldwell Banker Realty - Cambridge
MLS PIN #73579006 · Updated 9/21/2026, 3:05:00 AM ET
Building & association
- Total units
- 2
- Building stories
- 3
- Entry level
- 1
- Owner-occupied units
- 2
- HOA fee includes
- Insurance
- Pets allowed
- Yes
From MLS fields in this listing. Confirm association rules and fees with the association documents.
Facts & features
Home overview
- Property subtype
- Condominium
- Property category
- Residential
- MLS status
- Active
- Bedrooms
- 3
- Full bathrooms
- 3
- Half bathrooms
- 1
- Total bathrooms
- 3.5
- Total rooms
- 8
- Living area
- 2,136 sqft
- Living area source
- Unit Floor Plan
- Above grade finished area
- 1,457 sqft
- Below grade finished area
- 679 sqft
- Building area
- 2,136
- Building area units
- Square Feet
- Building area source
- Plans
- Area includes basement
- Yes
- Area disclosures
- Living area is in approximation. Buyer and buyer's agent do their own due diligence.
- Stories
- 3
- Building stories
- 3
- Entry level
- 1
- Entry location
- Unit Placement(Street)
- Unit building
- 2
Interior & systems
- Heating
- Central · Forced Air · Electric
- Heating available
- Yes
- Heating zones
- 3
- Cooling
- Central Air
- Cooling available
- Yes
- Cooling zones
- 3
- Appliances
- Dishwasher · Disposal · Microwave · Refrigerator · Freezer · Washer · Dryer
- Flooring
- Vinyl · Hardwood · Flooring - Hardwood
- Interior features
- Recessed Lighting · Bonus Room
- Laundry
- Flooring - Hardwood · Electric Dryer Hookup · Recessed Lighting · Second Floor · In Unit
- Basement
- Y
- Fireplace
- No
- Fireplaces
- 0
- Electrical service
- 110 Volts
- Accessibility
- No
Room details
Bedroom 2
- Level
- Second
- Features
- Bathroom - Full · Walk-In Closet(s) · Flooring - Hardwood · Recessed Lighting
Bedroom 3
- Level
- Basement
- Features
- Closet · Flooring - Vinyl · Recessed Lighting
Living room
- Level
- First
- Features
- Flooring - Hardwood · Balcony - Exterior · Exterior Access · Open Floorplan · Recessed Lighting · Slider
Dining room
- Level
- First
- Features
- Flooring - Hardwood · Recessed Lighting
Family room
- Level
- Basement
- Features
- Flooring - Vinyl · Recessed Lighting
Kitchen
- Level
- First
- Features
- Flooring - Hardwood · Countertops - Stone/Granite/Solid · Recessed Lighting · Peninsula
Bathroom 1
- Level
- First
Construction & condition
- Year built
- 2026
- Year built source
- Owner
- Year built details
- Actual,Finished, Never Occupied
- Structure type
- Townhouse
- Construction materials
- Stone
- Roof
- Shingle
- Total units
- 2
- Home warranty
- No
- Insulation
- Full · Spray Foam
- Year round use
- No
Garage & parking
- Total parking spaces
- 3
- Parking features
- Off Street · On Street
- Garage
- No
- Garage spaces
- 0
- Covered spaces
- 0
- Open parking
- Yes
- Open parking spaces
- 3
Lot & outdoor features
- Lot area
- 6,098 sqft (about 0.14 acres)
- Lot size
- 0.14 acres
- Reported lot area
- 0.14
- Lot size units
- Acres
- Exterior features
- Balcony · Rain Gutters
- Fencing
- Security
- Spa
- No
- Waterfront
- No
- Beachfront
- No
- Water views
- No
- Outdoor space available
- Yes - Common
Utilities & infrastructure
- Water source
- Public
- Sewer
- Public Sewer
- Utilities
- for Electric Range · for Electric Oven · for Electric Dryer
HOA & community
- Association fee
- $1
- Fee frequency
- Monthly
- Fee includes
- Insurance
- Community features
- Public Transportation · Shopping · Pool · Tennis Court(s) · Park · Walk/Jog Trails · Golf · Medical Facility · Bike Path · Highway Access · Private School · Public School · T-Station · University
- Senior community
- No
- Management
- Owner Association
- Development completion
- No
- Owner occupied units
- 2
Taxes & property records
- Annual property tax
- $7,268
- Tax year
- 2025
- Assessed value
- $534,400
- Zoning
- T
- Registry book
- 83468
- Registry page
- 587
Rental terms
- Pets allowed
- Yes
Location & listed schools
- City
- Watertown
- County
- Middlesex
- State
- MA
- ZIP code
- 02472
- MLS area
- Mount Auburn
- Directions
- Belmont St to Arlington St, to Keith St, 1 mile to Watertown Mall, 2.3 mile to Harvard Square.
Listing & disclosures
- MLS number
- 73579006
- Listing date
- 2026-09-17
- Original entry date
- 2026-09-17
- Status changed
- 2026-09-17
- Listing modified
- 2026-09-21
- Original list price
- $1,249,000
- Current list price
- $1,249,000
- List price per sqft
- $584.74
- Days on market
- 4
- Property market time
- 4
- Disclosures
- Final inspection is done · CO is not issued yet. Condo related docs will be provided after offer is accepted. Buyer and buyer's agent do their own due diligence.
- Disclosure indicator
- Y
- Lead paint
- None
- Documents available
- Floor Plans
Price & tax details
Current asking price$1,249,000
Original asking price$1,249,000
Listed on2026-09-17
Days on market4
| Year | Property tax | Assessed value |
|---|---|---|
| 2025 | $7,268 | $534,400 |
These records are supplied by the current listing. Assessed value is not market value; confirm taxes with the local assessor.
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SCHOOLS & EDUCATION
Schools & performance
School names, grades and state-reported measures are listed below.
This listing does not name individual schools. Public school information below is context, not an attendance assignment for this address.
Watertown public school profiles
Schools in the same-named district, alphabetically; these are not assigned schools for this address.
70DESE percentile
City public school · not assigned
Cunniff
Grades PK · K · 1 · 2 · 3 · 4 · 5
Progress toward targets 63%
76DESE percentile
City public school · not assigned
Hosmer
Grades PK · K · 1 · 2 · 3 · 4 · 5
Progress toward targets 61%
87DESE percentile
City public school · not assigned
James Russell Lowell
Grades PK · K · 1 · 2 · 3 · 4 · 5
Progress toward targets 68%
50DESE percentile
City public school · not assigned
Watertown High
Grades 9 · 10 · 11 · 12
Progress toward targets 30%
57DESE percentile
City public school · not assigned
Watertown Middle
Grades 6 · 7 · 8
Progress toward targets 68%
MLS school names do not guarantee attendance. Assignment can vary by school year, grade and admissions policy; confirm with the district before committing.
What do these numbers mean?
DESE accountability percentiles (1–99) compare schools administering similar assessments, using up to two years of indicators. These are not test scores out of 100 or GreatSchools 1–10 ratings. Progress toward targets is a separate state measure. Consider programs, support services and your child’s needs as well.
School names link to available school or district websites.
Information is deemed reliable but is not guaranteed. © 2026 MLS Property Information Network, Inc. All rights reserved.
Listings updated