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CondominiumResidential

355 Congress St

BOSTON, MA 02210
1910
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.
Built 19106 floors9 units760–2,845 ft²
$14M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$1.4M
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$1231
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-31.1%vs the Boston ZIP median sale $/ft² ($1786)

Sales Performance

—
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
0
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
0.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
2021202220242025
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
2021202220242025

7 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

1 bed
3 units
2 bed
4 units
3 bed
1 unit
4 bed
1 unit

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$947K–$1M
2 units
$1.3M–$1.4M
3 units
$1.7M–$1.7M
1 unit
$2.8M–$2.8M
1 unit
$3.7M–$3.7M
1 unit

Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.

Floor 4
$1220/ft²
Floor 5
$1224/ft²
Floor 6
$1298/ft²

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.67%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.0%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.5.1 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.67%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.75%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$1,200,466
Median tax billThe middle annual property tax bill among the building's units.$15,481
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit 403May 30, 2025$1,350,000Unit 602Jan 4, 2024$2,800,000Unit 502Mar 16, 2022$960,000Unit 402Aug 6, 2021$1,650,000Unit 602Jun 30, 2021$2,700,000Unit 501May 27, 2021$959,000Unit 401May 12, 2021$1,294,000

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.74 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.80%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountySUFFOLK
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2006
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Quincy Upper SchoolD
Middle · Grades 6–12 · 0.8 mi
E
Josiah Quincy Elementary SchoolB
Elementary · Grades PK–5 · 0.8 mi

District: Boston School District

Neighborhood · ZIP 02210These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.172
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.76

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.78%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.41%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.5,452
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,835 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$181,383
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$244,618
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.45 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

355 Congress St Ste 401
2 bd · 2 ba · 1,200 ft²
$1.4M
355 Congress St Ste 402
2 bd · 2 ba · 1,410 ft²
$1.7M
355 Congress St Ste 403
2 bd · 2 ba · 1,120 ft²
$1.3M
355 Congress St # 404
1 bd · 1 ba · 760 ft²
$947K
355 Congress St Ste 501
1 bd · 1 ba · 858 ft²
355 Congress St Ste 502
1 bd · 1 ba · 838 ft²
$1M
355 Congress St Ste 503
2 bd · 2 ba · 1,156 ft²
$1.4M
355 Congress St Ste 601
4 bd · 4 ba · 2,845 ft²
$3.7M
355 Congress St # 602
3 bd · 3.5 ba · 2,189 ft²
$2.8M

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

About 355 Congress St

How many units are in 355 Congress St, Boston, MA?

355 Congress St, Boston, MA has 9 residential units across 6 floors, built in 1910, according to county assessor records.

What is a unit at 355 Congress St, Boston, MA worth?

The median TopHap Estimate across the 9 units at 355 Congress St, Boston, MA is $1,422,553. That works out to $1231 per square foot. Units run from 760 to 2,845 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 355 Congress St, Boston, MA expensive for Boston?

Units at 355 Congress St, Boston, MA carry a median of $1231 per square foot, 31% below the Boston median of $1786 per square foot.

How often do units sell at 355 Congress St, Boston, MA?

0 units at 355 Congress St, Boston, MA sold in the last 12 months, out of 7 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

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