21 Tremont St # A, Boston MA 02129
Boston, MA 02129 • Charlestown
$699,000
$635,000
Est. $4,012/month
About this home
Located just off Monument Square, this oversized 1 Bed/1 Bath home boasts a coveted corner exposure and exceptional natural light throughout. The thoughtfully renovated kitchen features granite countertops, stainless appliances with gas cooking and is open to an elegant dining room with exposed brick wall, perfect for entertaining. The spacious living room with beautiful crown moldings, ceiling medallion and oversized windows overlooks the shared garden, while french doors lead to the spacious bedroom with sunny corner exposure and double closets. The recently renovated bathroom offers a walk-in shower and sleek floating vanity. Additional highlights include high ceilings, Brazilian cherry hardwood floors throughout, on-site laundry, and extra basement storage with exterior access. A fantastic opportunity to own a beautifully appointed home in a prime location.
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Recently Sold Nearby
Property History
Market Insights
Property Timeline
Status: Active under contract
Jun 27, 2026
Active → Active Under Contract
Pending Sale
Jun 26, 2026
Offer accepted, sale pending
Listed for Sale
Apr 9, 2026
$699,000
Original listing
Agent: Phillip MacArthur
Office: Windrift Real Estate, LLC
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 06/27/2026 | 📋 Status: Active under contract | - | - | - | Active → Active Under Contract |
| 06/26/2026 | ⏳ Pending Sale | - | - | - | Offer accepted, sale pending |
| 04/09/2026 | 🏠 Listed for Sale | $699,000 | - | - | Original listing |
Tax History
| Year | Taxes | Assessment |
|---|---|---|
| 2026 | $2,941 | $586,900 |
Financial Details
Annual Property Tax
$2,941
Tax Year 2026
HOA Fee
$356
Monthly
Assessed Value
$586,900
Facts & Features
Home Facts
Type
Residential
Style
Condominium
Year Built
1860
Living Area
681 sq ft
Bedrooms
1
Full Baths
1
Total Rooms
4
Interior
Heating
Baseboard
Cooling
Window Unit(s)
Flooring
Hardwood
Appliances
Range, Dishwasher, Refrigerator, Freezer
Fireplace
None
Basement
Y
Laundry
In Building
Features
None
Exterior
Construction
Frame
Architecture
None
Roof
Shingle
Features
Patio, Fenced Yard, Garden
Pool
None
Spa
None
Fencing
Fenced
Patio/Porch
Patio
Parking
Features
On Street
Utilities
Electric
None
Water
Public
Sewer
Public Sewer
Gas
None
Other
None
Financial
Annual Tax
$2,941
Assessed Value
$586,900
HOA & Community
HOA Fee
$356 Monthly
Fee Includes
Heat, Water, Sewer, Insurance
Amenities
None
Optional Fee Includes
None
Down Payment Resource
Eligible
Pets
Yes
MA Disclosures
Seller Disclosures
Tenant Has Agreed To Move Out 45 Days From An Accepted Offer. Taxes Include Residential Exemption.
Additional Details
Possession
None
Accepted Financing
None
Structure Type
["Detached"]
Unit/Building
A
Sq Ft Source
Master Deed
Documents
None
County
Suffolk
Total market time (incl. prior listings)
87 days
Property Overview
Property Type
Condominium
Listing Type
For Sale
Year Built
1860
Bedrooms
1
Full Bathrooms
1
Living Area
681 sq ft
Total Rooms
4
Stories
1
Entry Level
1
Floor Layout
Interactive room guide
Floor Layout
Finished Area
681 sq ft above grade
Display Options
Outdoor Areas
Patio & porchPatio
Room Markers
BABathroom (4)
BRBedroom (5)
DDining (1)
KKitchen (1)
LLiving (2)
OOffice (1)
Conceptual diagram based on MLS room data. It is not to scale and is not a substitute for architectural plans or on-site measurements.
Interior Features
Flooring:
Hardwood
Appliances:
Range, Dishwasher, Refrigerator, Freezer
Interior Features:
Windows:
Basement:
Y
Laundry:
In Building
Security:
Construction & Materials
Year Built:
1860
Effective Year (Renovated):
1984
Structure Type:
Detached
Exterior Materials:
Frame
Roof:
Shingle
Foundation:
Stories:
1
Heating, Cooling & Utilities
Heating:
Baseboard
Cooling:
Window Unit(s)
Hot Water:
Water Source:
Public
Sewer:
Public Sewer
Energy Features:
Exterior & Lot
Exterior Features:
Patio, Fenced Yard, Garden
Patio & Porch:
Patio
Fencing:
Fenced
Other Structures:
Lot Features:
Road Surface:
Parking & Garage
Parking Features:
On Street
Nearby Schools
School District
Boston School District local
C-
Where Graduates Go
Class of 2021
52%
attend college
38%
4-Year
14%
2-Year
7%
Out of State
7%
Working
School Safety
2024-25
3.7%
Above Average
3.2%
Suspensions
0.3%
In-School
0.5%
Emergency
1.8% below state avg
Elementary Schools
3 schools
C
Harvard-Kent Elementary School
< 0.1 mi
|
#589 of 824
|
Score: 41.5
Dropped 181 spots from last year
-16.7 below state avg
334 students
Very Diverse
Diverse Student Body
Grades PK-06
Harvard/Kent Elem
< 0.1 mi
A-
Warren-Prescott K-8 School
0.3 mi
|
#85 of 352
|
Score: 51.3
Improved 4 spots from last year
-7 below state avg
507 students
Diverse
Grades PK-08
Middle Schools
1 school
Edwards Middle
0.5 mi
High Schools
3 schools
Charlestown High
0.3 mi
D
Charlestown High School
0.3 mi
|
#322 of 346
|
Score: 31.0
Improved 49 spots from last year
-27.2 below state avg
754 students
Diverse
11 sports
• 488 athletes
Early College Program
Rising School
Grades 07-12
Seaport Academy School
1.1 mi
Grades 07-12
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Monthly Payment
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Loan Amount
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Total Interest
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Over life of loan
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Including down payment
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Down: $0
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Monthly Payment Breakdown
Principal & Interest
$0
Property Tax
$245
Homeowners Insurance
$200
HOA Fee
$356/mo
PMI (if <20% down)
$0
Loan Summary
Total of 360 payments
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Payment Over Time
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.
Location
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Neighborhood
Charlestown
21 Tremont St # A, Boston MA 02129
Boston, MA 02129
Listing Information
Listing Agent
Phillip MacArthur
Listing Office
Windrift Real Estate, LLC
Office Phone
978-999-2714
Agent MLS ID
CT009553
Office MLS ID
AN8933
Listing Data Updated
Jul 14, 2026 3:30 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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