401 W 4th St Boston — Photo 1 of 11
$1,199,000
401 W 4th St, Boston, MA 02127
Boston, MA 02127 — South Boston
Beds
5
Baths
5
SqFt
2,795
Style
Single Family
Built
1900
Amazing opportunity to develop a single family to a 4 floor two family with approved plans included in the sale. The building currently features 3 floors of living space, 4 bedrooms, and a partially finished walk out basement delivered vacant. The plans have both units being coveted duplexes with generous square footage and the ability to extend the living area even further by maximizing the by right FAR of 2.0. Buyer has the ability to flip as condos or hold for great rental returns.
Key facts
It was listed on August 13, 2026. The annual property taxes are $10,222 (2025 tax year). It sits on a 0.03-acre 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
Geography
Property History
$1,199,000
Aug 13, 2026
MLS® 73563435
$1,199,000
Aug 8, 2026
MLS® 73532773
$1,199,000
Aug 8, 2026
MLS® 73532774
$1,199,000
Jun 9, 2026
MLS® 73532773
$1,199,000
Jun 9, 2026
MLS® 73532774
Questions about this home
When was 401 W 4th St, Boston listed?
401 W 4th St, Boston was listed on August 13, 2026.
Has the price of 401 W 4th St, Boston changed?
The price hasn't changed since it was listed at $1,199,000.
What are the property taxes for 401 W 4th St, Boston?
The annual property taxes for 401 W 4th St, Boston are $10,222 (2025 tax year).
How big is the lot at 401 W 4th St, Boston?
401 W 4th St, Boston sits on a 0.03-acre lot.
What is the status of 401 W 4th St, Boston?
401 W 4th St, 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: 900 sq ft (the lesser of 900 sq ft or half the 2,795 sq ft principal dwelling). Lot size: 1,488 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: Calder Billings
Listing Office: Keller Williams Realty
MLS® Number: 73563435
