621 East Fourth Street Boston — Photo 1 of 36
Beds
3
Baths
2.5
SqFt
1,341
Style
Single Family
Built
1905
Rare opportunity to own on a premier Southie block! This home perfectly bridges quiet residential comfort with immediate urban access. Enjoy being steps away from East Broadway's dynamic dining and shopping scene, while living just five blocks from the sprawling South Boston waterfront. From coastal runs on William J. Day Boulevard to beach days at M Street and Carson, the ideal coastal city lifestyle awaits.
Key facts
It was listed on October 5, 2026. The annual property taxes are $4,161 (2027 tax year). It sits on a 0.03-acre (1,372 sq ft) lot.
Market Value Analysis
* Analysis is based on 24 actively listed and recently sold comparable properties strictly within Boston, MA.
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Gas Water Heater • Range • Microwave • Refrigerator • Washer • Dryer
Neighborhood
Public Transportation • Shopping • Park • Walk/Jog Trails • Private School • Public School
Geography
Questions about this home
When was 621 East Fourth Street, Boston listed?
621 East Fourth Street, Boston was listed on October 5, 2026.
Has the price of 621 East Fourth Street, Boston changed?
The price hasn't changed since it was listed at $1,295,000.
What are the property taxes for 621 East Fourth Street, Boston?
The annual property taxes for 621 East Fourth Street, Boston are $4,161 (2027 tax year).
How big is the lot at 621 East Fourth Street, Boston?
621 East Fourth Street, Boston sits on a 0.03-acre (1,372 sq ft) lot.
What is the status of 621 East Fourth Street, Boston?
621 East Fourth Street, Boston is actively listed for sale.
Population
36,769
U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)
Median Household Income
$164K
U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)
Renter-Occupied Homes
54.7%
U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)
New Construction Permits — Suffolk County
2,337 housing units permitted in the last 12 months (+13% vs the prior 12 months) — 2,062 in 5+ unit buildings
U.S. Census Bureau, Building Permits Survey (through Jul '26)
ADU Potential
Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 671 sq ft (the lesser of 900 sq ft or half the 1,341 sq ft principal dwelling). Lot size: 1,372 sq ft.
Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.
Listing Agent: Paul Gannon
Listing Office: Law Offices of Paul J. Gannon
MLS® Number: 73586635
