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Governmental / Public Use (General)Public Works

20 DEMEREST ST

WALTHAM, MA 02452
2
Beds
1.5
Baths
1,229 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.4 ac
Lot SizeThe size of the land the home sits on, from county records.
1952
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$109,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$109,400

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.23 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.Governmental / Public Use (General)
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.40
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

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

E
Northeast Elementary SchoolC+
Elementary · Grades KG–5 · 1.2 mi
H
Waltham Sr High SchoolC
High · Grades 9–12 · 1.5 mi
M
John F. Kennedy Middle SchoolA-
Middle · Grades 6–8 · 1.6 mi

District: Waltham School District

Neighborhood · ZIP 02452These 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.93
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 100.77

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.95%
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.10.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.17,229
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,328 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,289
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$131,985
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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

How this home compares

20 Demerest St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Smaller than 79% of homes in Middlesex County
  • Older than 73% of homes in Waltham 02452

How it measures up in Waltham 02452

The dot is this home. The mark in the middle is the typical home in Waltham 02452.

Living area1,229 ft²
SmallerTypical 1,886 ft²Bigger

Bigger than 24% of homes nearby

Lot size0.4 ac
SmallerTypical 0.34 acBigger

Bigger than 55% of homes nearby

Year built1952
OlderTypical 1977Newer

Newer than 27% of homes nearby

How 20 Demerest St ranks against every home in each area.
MeasureThis homeWaltham 02452Middlesex County
Living areabigger than1,229 ft²24% of homes21% of homes
Lot sizebigger than0.4 ac55% of homes57% of homes
Year builtnewer than195227% of homes43% of homes

About 20 Demerest St

When did 20 Demerest St, Waltham, MA last sell?

20 Demerest St, Waltham, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 20 Demerest St, Waltham, MA?

20 Demerest St, Waltham, MA has 2 bedrooms, 1.5 bathrooms, 1,229 square feet of living space and a 0.40-acre lot.

When was 20 Demerest St, Waltham, MA built?

20 Demerest St, Waltham, MA was built in 1952, making it 74 years old. The building has 2 stories.

What schools serve 20 Demerest St, Waltham, MA?

20 Demerest St, Waltham, MA is assigned to Northeast Elementary School (elementary), rated C+; Waltham Sr High School (high), rated C; John F. Kennedy Middle School (middle), rated A-. All sit in Waltham School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Demerest St, Waltham, MA compare to other homes in Waltham 02452?

Among the 3,442 homes in Waltham 02452, it is bigger than 24% of them (1,229 ft² against a typical 1,886 ft²), its lot is bigger than 55% of them (0.4 ac against a typical 0.34 ac) and it is newer than 27% of them (1952 against a typical 1977). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

Closest homes

More homes in Waltham 02452

Assigned schools

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