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CondominiumResidential

51 Warren St

WALTHAM, MA 02453
5.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1982
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
Built 198211 units705–732 ft²
$4.7M
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.
$427K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$586
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+23.7%vs the Waltham ZIP median sale $/ft² ($474)

Sales Performance

$420K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
-1.8%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
1
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
9.1%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19931994199520122021202220252026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19931994199520122021202220252026

11 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.

Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
$402K$415K$428K$441K705 ft²710 ft²716 ft²721 ft²727 ft²732 ft²
2 bd
2 bed
11 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.
2 bd · 1 ba · 726 ft²
2 units
2 bd · 1 ba · 729 ft²
2 units
One-off layouts
7 units

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.

$402K–$402K
1 unit
$415K–$415K
1 unit
$417K–$420K
2 units
$425K–$425K
1 unit
$427K–$430K
4 units
$432K–$432K
1 unit
$441K–$441K
1 unit

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.64%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.27%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.4.3 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.40%
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.30%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$454,971
Median tax billThe middle annual property tax bill among the building's units.$3,937
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.1

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

Unit 1-3Apr 28, 2026$420,000Unit 1-4Sep 8, 2025$415,000Unit 2-2Jul 15, 2025$440,000Unit B-1May 16, 2022$316,000Unit B-3Dec 20, 2021$369,000Unit 1-1May 16, 2018$320,000Unit 2-2May 11, 2012$192,000Unit B-1Aug 2, 1995$74,500Unit 2-3Aug 30, 1994$83,000Unit 2-3Dec 7, 1993$77,000

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

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.44
40
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
58
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
89
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
32
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.minimal

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
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyMIDDLESEX
ConstructionThe main material the home's frame and walls are built from.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
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.

E
James Fitzgerald Elementary SchoolB-
Elementary · Grades KG–5 · 0.4 mi
M
John W. McDevitt Middle SchoolB
Middle · Grades 6–8 · 1.3 mi
H
Waltham Sr High SchoolC
High · Grades 9–12 · 1.7 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.

51 Warren St # B-1
2 bd · 1 ba · 719 ft²
$417K
51 Warren St # B-2
2 bd · 1 ba · 705 ft²
$402K
51 Warren St # B-3
2 bd · 1 ba · 710 ft²
$432K
51 Warren St # 1-1
2 bd · 1 ba · 726 ft²
$425K
51 Warren St # 1-2
2 bd · 1 ba · 726 ft²
$428K
51 Warren St # 1-3
2 bd · 1 ba · 730 ft²
$420K
51 Warren St # 1-4
2 bd · 1 ba · 725 ft²
$415K
51 Warren St # 2-1
2 bd · 1 ba · 729 ft²
$428K
51 Warren St # 2-2
2 bd · 1 ba · 732 ft²
$441K
51 Warren St # 2-3
2 bd · 1 ba · 728 ft²
$427K
51 Warren St # 2-4
2 bd · 1 ba · 729 ft²
$430K

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

About 51 Warren St

How many units are in 51 Warren St, Waltham, MA?

51 Warren St, Waltham, MA has 11 residential units across built in 1982, according to county assessor records.

What is a unit at 51 Warren St, Waltham, MA worth?

The median TopHap Estimate across the 11 units at 51 Warren St, Waltham, MA is $426,783. That works out to $586 per square foot. Units run from 705 to 732 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 51 Warren St, Waltham, MA expensive for Waltham?

Units at 51 Warren St, Waltham, MA carry a median of $586 per square foot, 24% above the Waltham median of $474 per square foot.

How often do units sell at 51 Warren St, Waltham, MA?

1 units at 51 Warren St, Waltham, MA sold in the last 12 months, out of 11 recorded arms-length sales all time. That is a turnover rate of 9.1% of the building per year. The median sale over that period was $420K.

What floor plans does 51 Warren St, Waltham, MA have?

The most common plan at 51 Warren St, Waltham, MA is a 2-bedroom of 726 square feet, repeated 2 times, with a median estimate of $426,096. TopHap identifies 2 recurring plans in the building.

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Assigned schools

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