Hans Nagrath
Compass
(888) 604-7140
167 Total Sales
2 in Downtown Boston
$1.1M - $1.9M Price Range
21 Beacon St, Unit 6K Floor 6 Boston, MA 02108
Downtown Boston NeighborhoodEstimated Value: $442,150
1
Bed
1
Bath
265
Sq Ft
1899
Built
Highlights
- Clubhouse
- 3-minute walk to Park Street Station
- Elevator
- Beethoven Elementary School Rated A-
- Deck
- 3-minute walk to Temple Street Park
About This Home
As of February 2026Rarely available under $500k in prestigious concierge building! Beautifully Renovated Beacon Hill Pied-à-Terre! Welcome home to this stylish and functional city retreat, updated with premium finishes and designer details. Step off the elevator into your bright, well-designed flat featuring Viking & Blomberg appliances, custom cabinetry, and clever space-saving details throughout. Enjoy a versatile layout that easily transitions from day to night — with custom closet systems, built-in shelving, and flexible living zones. The spa-inspired bath and premium finishes add a touch of luxury to your everyday routine. Unwind at the end of the day on the spectacular roof deck, where you’ll take in sweeping views of Boston Common and the Charles River. Ideal as a primary residence, city escape, or investment, this turnkey unit offers the perfect blend of Beacon Hill charm and modern convenience.
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Property Details
Home Type
- Condominium
Est. Annual Taxes
- $4,469
Year Built
- Built in 1899
Home Design
- Entry on the 6th floor
Interior Spaces
- 1 Full Bathroom
- 265 Sq Ft Home
- 1-Story Property
Outdoor Features
- Deck
Utilities
- Cooling System Mounted In Outer Wall Opening
- Hot Water Heating System
- Heating System Uses Steam
Listing and Financial Details
- Assessor Parcel Number 3364986
Community Details
Overview
- Association fees include heat, electricity, gas, water, sewer, insurance, security, maintenance structure, snow removal, reserve funds
- 163 Units
- Mid-Rise Community
Amenities
- Clubhouse
- Laundry Facilities
- Elevator
Ownership History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
Date
Name
Owned For
Owner Type
Purchase Details
Listed on
Oct 21, 2025
Closed on
Feb 12, 2026
Sold by
21-6K Beacon Street Rt and Frattini
Bought by
Seller's Agent
Ally Forbes
Forbes Real Estate
Buyer's Agent
Ally Forbes
Forbes Real Estate
List Price
$469,999
Sold Price
$450,000
Premium/Discount to List
-$19,999
-4.26%
Views
98
Current Estimated Value
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
-$7,850
Avg. Annual Appreciation
-2.94%
Original Mortgage
$315,000
Outstanding Balance
$313,434
Interest Rate
6.06%
Mortgage Type
New Conventional
Estimated Equity
$128,716
Purchase Details
Closed on
Nov 1, 2024
Sold by
Frattini William
Bought by
21-6K Beacon Street Rt and Frattini
Purchase Details
Closed on
Mar 29, 2024
Sold by
Holahan Richard
Bought by
Frattini William
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$336,750
Interest Rate
6.77%
Mortgage Type
Purchase Money Mortgage
Purchase Details
Listed on
Aug 20, 2020
Closed on
Oct 31, 2020
Sold by
John Littman-Quinn Lt and Littman-Quinn
Bought by
Holahan Richard
Seller's Agent
Seth Williams
Reference Real Estate
Buyer's Agent
Scott Jones
RE/MAX Platinum
List Price
$399,900
Sold Price
$369,000
Premium/Discount to List
-$30,900
-7.73%
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
3.13%
Purchase Details
Listed on
Jun 9, 2014
Closed on
Aug 14, 2014
Sold by
Perroncello Joseph
Bought by
John Littman Quinn Lt and Littman-Quinn
Seller's Agent
Maureen O'Hara
Coldwell Banker Realty - Boston
Buyer's Agent
Sarah Plant
Luxury Residential Group, LLC
List Price
$279,000
Sold Price
$274,900
Premium/Discount to List
-$4,100
-1.47%
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
4.85%
Purchase Details
Closed on
Mar 6, 2009
Sold by
Orange Rt and Perroncello
Bought by
Perroncello Joseph
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$200,000
Interest Rate
5.14%
Home Values in the Area
Average Home Value in this Area
Agents Specializing in Downtown Boston, MA
-
Hans Nagrath
-
Alexander Koziakov
Alexander Koziakov
Compass
(781) 417-5576
88 Total Sales
1 in Downtown Boston
$1,260,000 Price
-
Brett Castellano
Brett Castellano
Real Broker CT, LLC
(508) 665-2091
63 Total Sales
1 in Downtown Boston
$639,000 Price
-
Vena Priestly
Vena Priestly
Rise Signature Homes
(857) 666-8458
52 Total Sales
1 in Downtown Boston
$1,250,000 Price
-
Franklin Knotts
Franklin Knotts
Coldwell Banker Realty - Boston
(781) 752-4079
21 Total Sales
1 in Downtown Boston
$910,000 Price
-
Barbara Wales
Barbara Wales
Engel & Volkers Newton
(781) 512-8233
103 Total Sales
2 in Downtown Boston
$508K - $920K Price Range
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Buyer | Sale Price | Title Company |
|---|---|---|---|
| $450,000 | -- | ||
| 21-6K Beacon Street Rt | -- | None Available | |
| Frattini William | $449,000 | None Available | |
| Holahan Richard | $369,000 | None Available | |
| John Littman Quinn Lt | $274,900 | -- | |
| Perroncello Joseph | -- | -- |
Source: Public Records
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Borrower | Loan Amount |
|---|---|---|---|
| Open | $315,000 | ||
| Closed | -- | $336,750 | |
| Previous Owner | Holahan Richard J | $221,400 | |
| Closed | Perroncello Joseph F | $200,000 |
Source: Public Records
Property History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Event | Price | List to Sale | Price per Sq Ft | Prior Sale |
|---|---|---|---|---|---|
| 02/12/2026 02/12/26 | Sold | $450,000 | -4.3% | $1,698 / Sq Ft | |
| 12/31/2025 12/31/25 | Pending | -- | -- | -- | |
| 10/21/2025 10/21/25 | For Sale | $469,999 | 0.0% | $1,774 / Sq Ft | |
| 08/13/2022 08/13/22 | Rented | $2,300 | 0.0% | -- | |
| 08/01/2022 08/01/22 | Under Contract | -- | -- | -- | |
| 07/23/2022 07/23/22 | For Rent | $2,300 | +21.1% | -- | |
| 06/06/2021 06/06/21 | Rented | $1,900 | 0.0% | -- | |
| 05/29/2021 05/29/21 | Under Contract | -- | -- | -- | |
| 04/24/2021 04/24/21 | For Rent | $1,900 | 0.0% | -- | |
| 11/02/2020 11/02/20 | Sold | $369,000 | -4.1% | $1,408 / Sq Ft | View Prior Sale |
| 10/14/2020 10/14/20 | Pending | -- | -- | -- | |
| 09/17/2020 09/17/20 | Price Changed | $384,900 | -3.8% | $1,469 / Sq Ft | |
| 08/20/2020 08/20/20 | For Sale | $399,900 | -- | $1,526 / Sq Ft |
Source: MLS Property Information Network (MLS PIN)
Tax History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $4,469 | $385,900 | $385,900 | |
| 2024 | $4,086 | $374,900 | $0 | $374,900 |
| 2023 | $4,026 | $374,900 | $0 | $374,900 |
| 2022 | $4,001 | $367,700 | $0 | $367,700 |
| 2021 | $4,296 | $402,600 | $0 | $402,600 |
| 2020 | $3,903 | $369,600 | $0 | $369,600 |
| 2019 | $3,675 | $348,700 | $0 | $348,700 |
| 2018 | $3,446 | $328,800 | $0 | $328,800 |
| 2017 | $3,316 | $313,100 | $0 | $313,100 |
| 2016 | $3,455 | $314,100 | $0 | $314,100 |
| 2015 | $2,386 | $197,037 | $0 | $197,037 |
| 2014 | $2,317 | $184,147 | $0 | $184,147 |
Source: Public Records
Agents Affiliated with this Home
-
Ally Forbes
Seller's Agent in 2026
Ally Forbes
Forbes Real Estate
(617) 763-4476
1 in this area
9 Total Sales
-
Anne Sasser
Seller's Agent in 2022
Anne Sasser
Gibson Sotheby's International Realty
(617) 799-3644
3 in this area
50 Total Sales
-
Seth Williams
Seller's Agent in 2020
Seth Williams
Reference Real Estate
(617) 680-9322
130 Total Sales
-
Scott Jones
Buyer's Agent in 2020
Scott Jones
RE/MAX
(781) 844-5070
32 Total Sales
-
Maureen O'Hara
Seller's Agent in 2014
Maureen O'Hara
Coldwell Banker Realty - Boston
(617) 733-4377
34 Total Sales
-
Sarah Plant
SP
Buyer's Agent in 2014
Sarah Plant
Luxury Residential Group, LLC
(908) 310-1840
1 in this area
10 Total Sales
About This Building
Map
Source: MLS Property Information Network (MLS PIN)
MLS Number: 73446196
APN: CBOS-000000-000003-002807-000164
Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.
The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. from third party sources, including sellers, lessors and public records, and were compiled by MLS Property Information Network, Inc. The property listing data and information, and the Images, are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLS Property Information Network, Inc. and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.
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