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CondominiumResidential

31 Pond St

WALTHAM, MA 02451
0.7 ac
Lot SizeThe size of the land the home sits on, from county records.
1981
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
Built 198129 units211–569 ft²
$8.6M
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.
$317K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$569
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+27.6%vs the Waltham ZIP median sale $/ft² ($446)

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.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+5.2%per yeartypical hold 8.8 yrsfrom 26 same-unit resales
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
19871993199720032006200920212025
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
19871993199720032006200920212025

48 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.
$238K$272K$307K$341K211 ft²283 ft²354 ft²426 ft²497 ft²569 ft²
1 bd
1 bed
29 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.
1 bd · 1 ba · 542 ft²
5 units
1 bd · 1 ba · 553 ft²
4 units
1 bd · 1 ba · 368 ft²
2 units
1 bd · 1 ba · 373 ft²
2 units
1 bd · 1 ba · 540 ft²
2 units
1 bd · 1 ba · 551 ft²
2 units
1 bd · 1 ba · 559 ft²
2 units
1 bd · 1 ba · 564 ft²
2 units
1 bd · 1 ba · 567 ft²
2 units
1 bd · 1 ba · 568 ft²
2 units
One-off layouts
4 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.

$238K–$247K
3 units
$286K–$286K
1 unit
$299K–$301K
2 units
$302K–$315K
6 units
$315K–$327K
13 units
$335K–$341K
3 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.45%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.17%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.17.0 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.57%
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.29%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$309,945
Median tax billThe middle annual property tax bill among the building's units.$2,896
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 2Sep 2, 2025$300,000Unit 20Aug 7, 2025$298,900Unit 26Jun 27, 2025$205,000Unit 17Apr 30, 2025$315,000Unit 6Feb 28, 2025$280,000Unit 1Sep 3, 2024$295,000Unit 8Jun 21, 2022$299,900Unit 23Sep 8, 2021$277,000Unit 25Jul 28, 2021$260,000Unit 14Jun 30, 2021$300,000

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.35 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
HeatingThe type of heating system in the home.Hot Water
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
Thomas R Plympton Elementary SchoolC
Elementary · Grades KG–5 · 0.3 mi
H
Waltham Sr High SchoolC
High · Grades 9–12 · 1.1 mi
M
John F. Kennedy Middle SchoolA-
Middle · Grades 6–8 · 1.2 mi

District: Waltham School District

Neighborhood · ZIP 02451These 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.84
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
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.96%
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.7.7%
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.16,966
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,036 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,384
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$156,140
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.

31 Pond St
1 bd · 1 ba · 542 ft²
$302K
31 Pond St # 2
1 bd · 1 ba · 542 ft²
$304K
31 Pond St
1 bd · 1 ba · 542 ft²
$327K
31 Pond St # 4
1 bd · 1 ba · 536 ft²
$299K
31 Pond St # 5
1 bd · 1 ba · 540 ft²
$306K
31 Pond St # 6
1 bd · 1 ba · 542 ft²
$286K
31 Pond St # 7
1 bd · 1 ba · 542 ft²
$301K
31 Pond St # 8
1 bd · 1 ba · 540 ft²
$327K
31 Pond St # 9
1 bd · 1 ba · 564 ft²
$319K
31 Pond St # 10
1 bd · 1 ba · 551 ft²
$318K
31 Pond St # 11
1 bd · 1 ba · 373 ft²
$247K
31 Pond St # 12
1 bd · 1 ba · 553 ft²
$315K
31 Pond St # 13
1 bd · 1 ba · 568 ft²
$341K
31 Pond St # 14
1 bd · 1 ba · 567 ft²
$322K
31 Pond St # 15
1 bd · 1 ba · 559 ft²
$317K
31 Pond St # 16
1 bd · 1 ba · 368 ft²
$242K
31 Pond St # 17
1 bd · 1 ba · 553 ft²
$321K
31 Pond St # 18
1 bd · 1 ba · 564 ft²
$321K
31 Pond St # 19
1 bd · 1 ba · 565 ft²
$327K
31 Pond St # 20
1 bd · 1 ba · 551 ft²
$303K
31 Pond St # 21
1 bd · 1 ba · 373 ft²
$238K
31 Pond St # 22
1 bd · 1 ba · 553 ft²
$315K
31 Pond St # 23
1 bd · 1 ba · 568 ft²
$310K
31 Pond St # 24
1 bd · 1 ba · 567 ft²
$335K
31 Pond St # 25
1 bd · 1 ba · 559 ft²
$318K
31 Pond St # 26
1 bd · 1 ba · 368 ft²
31 Pond St # 27
1 bd · 1 ba · 553 ft²
$326K
31 Pond St # 28
1 bd · 1 ba · 569 ft²
$321K
31 Pond St # 29
1 bd · 1 ba · 211 ft²
$340K

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

About 31 Pond St

How many units are in 31 Pond St, Waltham, MA?

31 Pond St, Waltham, MA has 29 residential units across built in 1981, according to county assessor records.

What is a unit at 31 Pond St, Waltham, MA worth?

The median TopHap Estimate across the 29 units at 31 Pond St, Waltham, MA is $317,354. That works out to $569 per square foot. Units run from 211 to 569 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 31 Pond St, Waltham, MA expensive for Waltham?

Units at 31 Pond St, Waltham, MA carry a median of $569 per square foot, 28% above the Waltham median of $446 per square foot.

How often do units sell at 31 Pond St, Waltham, MA?

0 units at 31 Pond St, Waltham, MA sold in the last 12 months, out of 48 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

Have units at 31 Pond St, Waltham, MA appreciated?

Across 26 repeat sales of the same unit, 31 Pond St, Waltham, MA returned a median 5.2% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 8.8 years.

What floor plans does 31 Pond St, Waltham, MA have?

The most common plan at 31 Pond St, Waltham, MA is a 1-bedroom of 542 square feet, repeated 5 times, with a median estimate of $302,450. TopHap identifies 10 recurring plans in the building.

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Assigned schools

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