129 M St #1, South Boston, MA, 02127
About This Home
Turnkey South Boston investment opportunity or ideal owner-occupant home. This renovated 4-bedroom, 1.5-bath lower duplex sits between M Street Beach and the shops, restaurants, and energy of E Broadway retail options. Offering over 1,000 square feet across two levels, the home features a smart, flexible layout with two bedrooms and a bathroom on each floor, making it well-suited for investors, roommates, or buyers looking for extra work-from-home space. The updated kitchen features stainless steel appliances, granite countertops, and excellent functionality. A true standout is the private deck and exclusive backyard, creating rare outdoor space for summer barbecues, gardening, entertaining, or relaxing after the beach. In-unit laundry, hardwood floors throughout, central air conditioning, and move-in-ready condition complete this South Boston gem.
Getting Around
Very Walkable
Very Limited Transit
Very BikeableSchools
Construction
Condition
- Year built: 1890
Materials
- Construction materials: Frame
Type & Style
- Home type: Condo
- Property subType: Condominium
Interior
Appliances
- Appliances included: Dishwasher,Disposal,Microwave,Refrigerator,Washer,Dryer
- Laundry features: In Unit
Basement
- Has basement: Yes
Bedrooms & Bathrooms
- Bedrooms: 4
- Bathrooms: 2
- Full bathrooms: 1
- 1/2 bathrooms: 1
Features
- Flooring: Wood,Tile
- Number of fireplaces: 1
- Fireplace: Yes
- Finished area below ground: 500
- Finished area above ground: 574
Heating & Cooling
- Heating features: Forced Air
- Cooling features: Central Air
Interior Area
- Total structure area: 1,074
- Total interior livable area: 1,074 sqft
Property
Details
- Parcel number: W:06 P:02551 S:002,4394794
- Zoning: CD
Features
- Patio & porch: Deck - Wood
- Exterior features: Deck - Wood,Fenced Yard,Garden
- Fencing: Fenced
- Waterfront features: Bay,Harbor,Ocean,Direct Access,Walk to,3/10 to 1/2 Mile To Beach,Beach Ownership(Public)
Lot
- Lot size: 1,074 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 | $4,424 | $53,088 |
| Home Insurance * | $217 | $2,604 |
| Property Taxes | $846 | $10,152 |
| Electricity | $354 | $4,259 |
| Total | $5,841 | $70,092 |
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 |
|---|---|---|
| 2026-06-09 | Listed for sale | $875,000 |
| 2023-05-24 | Listing removed | -- |
| 2023-05-23 | Listed for rent | $5,300 |
| 2022-11-16 | Listing removed | $850,000 |
| 2022-09-22 | Listed for sale | $850,000 |
| 2022-09-20 | Listing removed | -- |
| 2022-08-29 | Price change | $5,000 |
| 2022-08-02 | Price change | $5,300 |
| 2022-06-03 | Listing removed | -- |
| 2022-06-01 | Listed for rent | $5,500 |
| 2021-03-12 | Sold | $791,500 |
| 2021-02-10 | Pending sale | $799,000 |
| 2021-02-09 | Listed for sale | $799,000 |
| 2015-08-07 | Sold | $535,000 |
| 2015-07-01 | Pending sale | $499,900 |
| 2015-07-01 | Listed for sale | $499,900 |
| 2012-08-15 | Sold | $498,000 |
| 2005-06-03 | Sold | $432,000 |
| 2003-05-23 | Sold | $375,000 |
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