House Prices

Old Harbor South Boston, MA House Prices & Home Values 2026


Average Data

average house price$901,274
average size per house1347 ft²
average price per ft²695 $ / ft²

05/23/2026 - The value range (VR) for house prices in Old Harbor South Boston, MA is $660.25/ sqft to $729.75/ sqft. An average home with 1347 sqft costs approximately $923,153 to $1,020,327. South Boston, MA includes 1 ZIP codes and it is located in Suffolk county. The lowest prices are found in ZIP 02127, while the highest are in ZIP 02127. The average price per sqare feet is $695. Our analysis is based on 16 property listings.

Avergage prices by ZIP codes Old Harbor South Boston

02127707 $ / ft²




Historical development of home values in Old Harbor South Boston

Year Estimated value (USD) Change vs. 2025
2010 $418,568 -53.6%
2011 $402,382 -55.4%
2012 $401,299 -55.5%
2013 $416,298 -53.8%
2014 $436,998 -51.5%
2015 $459,426 -49.0%
2016 $483,403 -46.4%
2017 $509,494 -43.5%
2018 $537,661 -40.3%
2019 $562,592 -37.6%
2020 $591,675 -34.4%
2021 $672,967 -25.3%
2022 $784,528 -13.0%
2023 $827,321 -8.2%
2024 $875,183 -2.9%
2025 $901,274 0.0%

Graph: estimated home values in Old Harbor South Boston over time (USD)



Example: 100% financing house in Old Harbor South Boston

Loan amount: $901,274

Interest rate: 6.23%

Fixed monthly payment: $5,536.41

Breakdown in the 1st month:
Interest portion: $4,677.61  –  Principal portion: $858.80

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $55,832.02 $10,604.89 $890,669.11
2 $55,152.37 $11,284.55 $879,384.56
3 $54,429.15 $12,007.76 $867,376.79
4 $53,659.59 $12,777.33 $854,599.47
5 $52,840.70 $13,596.21 $841,003.25
6 $51,969.34 $14,467.58 $826,535.68
7 $51,042.13 $15,394.79 $811,140.89
8 $50,055.49 $16,381.43 $794,759.46
9 $49,005.62 $17,431.29 $777,328.17
10 $47,888.47 $18,548.45 $758,779.72
11 $46,699.72 $19,737.19 $739,042.53
12 $45,434.79 $21,002.13 $718,040.40
13 $44,088.78 $22,348.13 $695,692.27
14 $42,656.52 $23,780.40 $671,911.87
15 $41,132.46 $25,304.46 $646,607.41
16 $39,510.72 $26,926.19 $619,681.21
17 $37,785.05 $28,651.87 $591,029.35
18 $35,948.78 $30,488.13 $560,541.21
19 $33,994.83 $32,442.08 $528,099.13
20 $31,915.66 $34,521.26 $493,577.87
21 $29,703.23 $36,733.69 $456,844.18
22 $27,349.00 $39,087.91 $417,756.27
23 $24,843.90 $41,593.01 $376,163.26
24 $22,178.25 $44,258.66 $331,904.60
25 $19,341.76 $47,095.15 $284,809.44
26 $16,323.49 $50,113.43 $234,696.02
27 $13,111.77 $53,325.14 $181,370.87
28 $9,694.22 $56,742.69 $124,628.18
29 $6,057.65 $60,379.27 $64,248.91
30 $2,188.01 $64,248.91 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Old Harbor South Boston, MA


1500 sqft3900 sqft
Ø selling price$1,309,360$2,785,365
Ø fast selling$1,190,327$2,506,828
Ø high price sale$1,428,392$3,063,901

In 2026, houses in Old Harbor South Boston, MA will be offered at an average price of $695 per square foot. A 1,500 sqft home priced at $1,309,360 is 23.87% more expensive per square foot than a 3,900 sqft home priced at $2,785,365. Home prices in Old Harbor South Boston, MA vary significantly depending on the property’s condition and exact location. For a quick sale, a 2,700 sqft home should be listed at around $1,928,329. Sellers who can wait longer may achieve a higher price of up to $2,356,847.

FAQ – Home Values in Old Harbor South Boston

What is the median home value in Old Harbor South Boston in 2026?

In 2026, the typical home value in Old Harbor South Boston is about $901,274 for an average home size of 1347 square feet. This corresponds to an average price of roughly $695 per square foot.

What is the average cost per square foot in Old Harbor South Boston?

In 2026, homes in Old Harbor South Boston sell for an average of around $695 per square foot, with a typical range between $660.25 and $729.75 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in Old Harbor?

The average home size in Old Harbor South Boston is about 1347 square feet, with an estimated 2026 value around $901,274.



Neighborhoods close to Old Harbor South Boston, MA

Jeffries Point East Boston, MA596 $ / ft²
Navy Yard Charlestown, MA780 $ / ft²
Hyde Square Jamaica Plain, MA452 $ / ft²
Edgewater Mattapan, MA279 $ / ft²
Ashmont Dorchester Center, MA690 $ / ft²
Neponset Dorchester, MA434 $ / ft²
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