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CondominiumResidential

333 River St

WALTHAM, MA 02453
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.
Built 20032 units1,850–1,850 ft²
$1.6M
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.
$797K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$431
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+0.5%vs the Waltham ZIP median sale $/ft² ($429)

Sales Performance

$774K
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.
1
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
50.0%
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
200920122026

4 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.

3 bed
2 units
Recurring 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.
3 bd · 2.5 ba · 1,850 ft²
2 units

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.100%
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.5.4 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.0%
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.59%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$784,691
Median tax billThe middle annual property tax bill among the building's units.$6,450
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 1Feb 9, 2026$774,383Unit 1Dec 17, 2012$399,000Unit 2Sep 24, 2012$400,000Unit 1Feb 26, 2009$390,000

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

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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
John W. McDevitt Middle SchoolB
Middle · Grades 6–8 · 0.4 mi
E
James Fitzgerald Elementary SchoolB-
Elementary · Grades KG–5 · 1.1 mi
H
Waltham Sr High SchoolC
High · Grades 9–12 · 1.4 mi

District: Waltham School District

Neighborhood · ZIP 02453These 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.106
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.73

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.32,080
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,464 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$106,981
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$136,606
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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.

333 River St # 1
3 bd · 2.5 ba · 1,850 ft²
$781K
333 River St # 2
3 bd · 2.5 ba · 1,850 ft²
$814K

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

About 333 River St

How many units are in 333 River St, Waltham, MA?

333 River St, Waltham, MA has 2 residential units across built in 2003, according to county assessor records.

What is a unit at 333 River St, Waltham, MA worth?

The median TopHap Estimate across the 2 units at 333 River St, Waltham, MA is $797,441. That works out to $431 per square foot. Units run from 1,850 to 1,850 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 333 River St, Waltham, MA expensive for Waltham?

Units at 333 River St, Waltham, MA carry a median of $431 per square foot, 0% above the Waltham median of $429 per square foot.

How often do units sell at 333 River St, Waltham, MA?

1 units at 333 River St, Waltham, MA sold in the last 12 months, out of 4 recorded arms-length sales all time. That is a turnover rate of 50.0% of the building per year. The median sale over that period was $774K.

What floor plans does 333 River St, Waltham, MA have?

The most common plan at 333 River St, Waltham, MA is a 3-bedroom of 1,850 square feet, repeated 2 times, with a median estimate of $797,441. TopHap identifies 1 recurring plans in the building.

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