Active
4 Days on market
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 with tenants in place until August 2026. 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.
Market Value Analysis
This Property
Size (SqFt) →Price →This Property$429/sqft
Local Avg (Boston)$551/sqft
22% BelowMarket Average
* Analysis is based on 24 actively listed and recently sold comparable properties strictly within Boston, MA.
Property Details
Financials
Original Price$1,199,000
Annual Taxes$10,222
Parking
Garage0
Off-Street0
Interior Specifications
Total Rooms11
FireplacesNone
FlooringHardwood
BasementPartially Finished
Climate & Utilities
HeatingHot Water, Natural Gas
CoolingNone
WaterPublic
SewerPublic Sewer
Building & Exterior
Construction--
RoofShingle, Rubber
FoundationOther
ZoningR1
Property & Lot
Acres0.03
SqFt Lot1,488
Lot Features--
Amenities & Appliances
Gas Water Heater
Geography
Property History
Listed
$1,199,000
Aug 13, 2026
MLS® 73563435
Listed
$1,199,000
Aug 13, 2026
MLS® 73563437
Expired
$1,199,000
Aug 8, 2026
MLS® 73532773
Expired
$1,199,000
Aug 8, 2026
MLS® 73532774
Listed
$1,199,000
Jun 9, 2026
MLS® 73532773
Listed
$1,199,000
Jun 9, 2026
MLS® 73532774
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
2,527 housing units permitted in the last 12 months (+37% vs the prior 12 months) — 2,269 in 5+ unit buildings
U.S. Census Bureau, Building Permits Survey (through Jun '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 Provided By
Listing Agent: Calder Billings
Listing Office: Keller Williams Realty
MLS® Number: 73563435
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