401 W 4th St, South Boston, MA, 02127
About This Home
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.
Getting Around
Walker's Paradise
Very Limited Transit
BikeableSchools
Construction
Condition
- New construction: Yes
- Year built: 1900
Materials
- Foundation: Other
- Roof: Shingle,Rubber
Type & Style
- Home type: SingleFamily
- Architectural style: Contemporary
- Property subType: Single Family Residence
Interior
Appliances
- Appliances included: Gas Water Heater
Basement
- Has basement: Yes
- Basement: Partially Finished
Bedrooms & Bathrooms
- Bedrooms: 5
- Bathrooms: 5
- Full bathrooms: 5
Features
- Flooring: Hardwood
- Finished area below ground: 573
- Finished area above ground: 2,222
Heating & Cooling
- Heating features: Hot Water,Natural Gas
- Cooling features: None
Interior Area
- Total structure area: 2,795
- Total interior livable area: 2,795 sqft
Property
Details
- Parcel number: W:06 P:01094 S:000,1412683
- Zoning: R1
Features
- Patio & porch: Porch - Enclosed,Patio
- Exterior features: Porch - Enclosed,Patio
- Has view: Yes
- View description: City View(s)
- Waterfront features: Bay,1/2 to 1 Mile To Beach
Lot
- Lot size: 1,488 sqft
Climate Risk is Financial Risk
Every home has a financial story beyond the listing price. Below, you’ll see the climate risks that could affect this property — and in Bills & Affordability, how those risks may influence repairs, insurance, utilities, and long-term value.
Biggest Threats for This Home
- Heat Wave
- Tsunami
How This Home’s Risks Compare
FEMA Declared Disasters Across Massachusetts Counties
Understanding the Costs
Financial advisors generally recommend spending no more than 30% of your gross household income on housing costs. In practice, many households stretch to 35% or beyond — especially in high-cost markets.
Estimated Costs Today
| Monthly | Annual | |
|---|---|---|
| Mortgage | $6,062 | $72,744 |
| Home Insurance * | $298 | $3,576 |
| Property Taxes | $1,160 | $13,920 |
| Electricity | $551 | $6,613 |
| Total | $8,071 | $96,852 |
Income You'd Need if You Spent...
Massachusetts FAIR Plan Programs
How Costs Could Change Over Time
Climate risk is quickly impacting all of the major home ownership costs. Adjust the growth rates and percentage of income spent on housing below to see how your housing costs could change over the next 10 years — and what income you'd need to keep up.
Comparing Against the Market
Price Per Sq Ft
vs Other Active Listings
Avg $/sqft
vs Homes Sold Last Month
Median $/sqft
Current Market Trends
Median Price Per Square Foot
The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.
Historicals for This Listing
Zestimate History ($/sqft)
Price History
| Date | Event | Price |
|---|---|---|
| 2026-08-18 | Listed for rent | $5,000 |
| 2026-08-13 | Listed for sale | $1,199,000 |
| 2026-08-10 | Listing removed | $5,000 |
| 2026-08-09 | Listing removed | $1,199,000 |
| 2026-08-08 | Listed for rent | $5,000 |
| 2026-07-14 | Price change | $1,199,000 |
| 2026-06-09 | Listed for sale | $1,249,000 |
| 2024-07-24 | Listing removed | -- |
| 2024-07-17 | Listed for rent | $5,000 |
| 2023-07-21 | Listing removed | -- |
| 2023-06-26 | Listed for rent | $5,400 |
| 2022-05-04 | Listing removed | -- |
| 2022-05-02 | Listed for rent | $5,000 |
| 2022-04-25 | Listing removed | -- |
| 2022-04-12 | Listed for rent | $5,000 |
| 2019-03-15 | Sold | $650,000 |
| 2019-02-08 | Pending sale | $729,000 |
| 2018-10-26 | Listed for sale | $729,000 |
| 2018-09-25 | Listing removed | $759,999 |
| 2018-09-20 | Price change | $759,999 |
| 2018-08-01 | Listed for sale | $780,000 |
| 1992-05-01 | Sold | $75,000 |
| 1991-11-14 | Sold | $94,350 |
| 1990-06-22 | Sold | $195,000 |
| 1988-10-27 | Sold | $144,000 |
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