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Deed-verified record

355 Congress Street Condominium

South Boston, Boston · 355 Congress St

355 Congress Street Condominium in South Boston, Boston has 11 recorded condominium sales dating back to 2020, a median sale price of $1.3M and an average of $1,187 per square foot. Every figure below is drawn from recorded deeds — not listings, not estimates.

11Recorded sales
9Units
$1.3MMedian price
$1,187Avg $/SF

The record

$19.1MTotal volume
$1.7MAvg sale price
$3.9MHighest sale
2Resales
3.7 yrsAvg hold
+4.4%Avg appreciation
4/10/2020First close
5/30/2025Latest close

Sales activity

Recorded sales by year

Every deed recorded in 355 Congress Street Condominium, by year, with that year's median price.

50$2.8M$960K202020222025
Sales recorded
Median price

Sales by price point

How 11 recorded sales distribute across the price ladder.

Under $1M
3
$1M–$3M
7
$3M–$5M
1
11 sales classified

Unit mix sold

Bedroom count across recorded sales.

1 Bed
3
2 Beds
5
3 Beds
2
4 Beds
1

10 most recent sales

UnitDateBedsTypePrice$/SFChange
4035/30/20252 BedsResale 1$1.4M$1,205+5%
6021/4/20243 BedsResale 1$2.8M$1,279+4%
5023/16/20221 BedDeveloper Sale$960K$1,146
6018/31/20214 BedsDeveloper Sale$3.9M$1,371
4028/6/20212 BedsDeveloper Sale$1.6M$1,170
6026/30/20213 BedsDeveloper Sale$2.7M$1,233
5015/27/20211 BedDeveloper Sale$959K$1,118
4015/12/20212 BedsDeveloper Sale$1.3M$1,078
4037/22/20202 BedsDeveloper Sale$1.3M$1,147
5036/11/20202 BedsDeveloper Sale$1.3M$1,125
1 more recorded sales in 355 Congress Street CondominiumPlus every unit's complete resale chain, buyer and seller names, financing, and the deed citation behind each figure.

The full 355 Congress Street Condominium record

You are seeing the summary. Members see the deeds.

All 11 recorded salesEvery unit's resale chainBuyer & seller namesFinancing & deed citationsCondo docs + AIClient-ready reports

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About this record

Where does this data come from?

Every sale shown is a deed recorded with the Boston registry — the legal record of the transaction, not a listing or an estimate. CURVE assembles, verifies and reconciles each one to the building and the unit.

How many sales are in 355 Congress Street Condominium?

11 recorded sales, going back to 2020, of which 2 are resales. This page shows the 10 most recent; members see all of them.

What has 355 Congress Street Condominium done over time?

Resales in the building have changed hands at an average of +4.4% against their prior recorded price, after an average hold of 3.7 years.

What do members see that I don't?

The complete sales table, each unit's full chain of title, buyer and seller names, financing detail, the deed book and page behind every figure, the condo documents, and reports you can send to a client.