Claflin Building

19–23 Beacon St, Boston, MA 02108

Claflin Building is an 11-story condominium building at 19–23 Beacon St in Beacon Hill, Boston, MA 02108, with 155 condos, built in 1899.

At a glance

• 155 condos (the City of Boston assessor)
• Built in 1899
• 11 floors
• Units from 262 to 929 sq ft (median 508)
• Bedrooms: 17 studio, 131 1-bedroom, 7 2-bedroom
• Units assessed $261,200–$970,000, median $526,700 (FY2026)

Homes for sale in Claflin Building

• 21 Beacon St #3K — $409,900 · 1 ba, 262 sq ft
• 21 Beacon Street #6B — $525,000 · 1 bd, 1 ba, 438 sq ft
• 21 Beacon St #4T — $599,000 · 1 bd, 1 ba, 591 sq ft
• 21 Beacon St #3N — $675,000 · 1 bd, 1 ba, 565 sq ft

Homes for rent in Claflin Building

• 21 Beacon St. #9L — $2,500/mo · 1 bd, 1 ba, 325 sq ft
• 21 Beacon St #3R — $3,400/mo · 1 bd, 1 ba, 560 sq ft
• 21 Beacon St #3H — $5,000/mo · 2 bd, 2 ba, 929 sq ft
• 22 Beacon St. #2 — $8,600/mo · 3 bd, 3 ba, 1,800 sq ft

Getting around

Walkability: 100 out of 100, from how close everyday places are.

Closest train and subway stops:

• Park Street (MBTA Red Line Green Line B·C·D·E), 0.1 mi
• State (MBTA Blue Line Orange Line Green Line B·C·D·E), 0.2 mi
• Bowdoin (MBTA Blue Line), 0.2 mi

Closest bus stops:

• Beacon St @ Park St (MBTA 43), under 0.1 mi
• Cambridge St @ Government Ctr Sta (MBTA 354), 0.2 mi
• Congress St @ Haymarket Sta (MBTA 4 92 93), 0.3 mi

Public schools nearby

• Eliot K-8 Innovation School (elementary, grades PK–8), 0.7 mi
• Boston Adult Tech Academy (high, grades 11–12), 0.7 mi

The district decides which school serves an address. Distances are straight-line.

Questions about Claflin Building

How many units are in Claflin Building?

Claflin Building has 155 condos, according to the City of Boston assessor.

When was Claflin Building built?

Claflin Building was built in 1899 and has 11 floors.

Are there homes for sale or rent in Claflin Building right now?

Yes: 4 for sale from $409,900 and 4 for rent from $2,500 a month, listed on this page. Benjamin Realty can show any of them.

What are condos in Claflin Building worth?

Units are assessed from $261,200 to $970,000 (median $526,700) for fiscal year 2026. Assessed values are set for taxes and can differ from market value.

How big are the units in Claflin Building?

Units run from 262 to 929 square feet, with a median of 508.

What is the closest T or train station to Claflin Building?

Park Street (MBTA Red Line Green Line B·C·D·E) is 0.1 miles away, in a straight line.

Buildings near Claflin Building

• Bostonview Apartments — 140 Bowdoin St, 146 apartments · built 1965 · 18 floors, 0 mi
• Bowdoin Manor — 10 Bowdoin St, 75 apartments · built 2003 · 22 floors · 4 listed now, 0.2 mi
• Beacon House — 19 Myrtle St, 135 apartments, 0.2 mi
• The Stearns — 10 Temple Pl, 140 apartments, 0.2 mi
• Millennium Tower — 1 Franklin St, 442 condos · built 2013 · 60 floors · 20 listed now, 0.2 mi
• Tremont on the Common — 151–162 Tremont St, 372 condos · built 1968 · 28 floors · 11 listed now, 0.3 mi
• The Sudbury — 100 Sudbury St, 368 apartments · built 2017 · 46 floors · 31 listed now, 0.3 mi
• The Ritz-Carlton Residences — 1 Avery St, 132 condos · built 2000 · 39 floors · 4 listed now, 0.3 mi

More: all 300 large buildings in Boston · Boston homes for sale and rent · Beacon Hill neighborhood guide

Sources

• MassGIS Standardized Assessors’ Parcels (municipal assessors)
• City of Boston FY2026 Property Assessment
• OpenStreetMap contributors (ODbL)

Assessed values and sales are public records from municipal assessors. An assessed value is set for taxation and may differ from market value. Listing information from MLS Property Information Network (MLS PIN), deemed reliable but not guaranteed. Data checked 2026-11-02.

To ask about homes in Claflin Building or book a showing, call Benjamin Realty at (617) 734-5050 or email [email protected].