Skip to content
Skip to content
TopHapOpen in map
Duplex (2 Units, Any Combination)Residential
Last sold for $3,000 on Oct 18, 2016

21 PERHAM ST

CHELMSFORD, MA 01824
5
Beds
3
Baths
2,120 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.
0.74 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$3,000 · Oct 18, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,667 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$728,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$339,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$389,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$580,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$710,860

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.10 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.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.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.74
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Baseboard
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

Transaction History(4)

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
Center Elementary SchoolB+
Elementary · Grades KG–4 · 0.3 mi
M
McCarthy Middle SchoolB+
Middle · Grades 7–8 · 1.9 mi
H
Chelmsford High SchoolA-
High · Grades 9–12 · 2.3 mi

District: Chelmsford School District

Neighborhood · ZIP 01824These 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.68
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 100.81

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.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.9%
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.27,961
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,525 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$133,207
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$151,835
Average tempThe average temperature here across a full year.48°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%

Owner Tools

Do you own this home?
Claim this home

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

21 Perham 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.

  • Bigger than 72% of homes in Chelmsford 01824
  • Has a bigger lot than 73% of homes in Middlesex County
  • Newer than 68% of homes in Chelmsford 01824

How it measures up in Chelmsford 01824

The dot is this home. The mark in the middle is the typical home in Chelmsford 01824.

Living area2,120 ft²
SmallerTypical 1,662 ft²Bigger

Bigger than 72% of homes nearby

Lot size0.74 ac
SmallerTypical 0.8 acBigger

Bigger than 47% of homes nearby

Year built1972
OlderTypical 1965Newer

Newer than 68% of homes nearby

How 21 Perham St ranks against every home in each area.
MeasureThis homeChelmsford 01824Middlesex County
Living areabigger than2,120 ft²72% of homes61% of homes
Lot sizebigger than0.74 ac47% of homes73% of homes
Year builtnewer than197268% of homes66% of homes

About 21 Perham St

When did 21 Perham St, Chelmsford, MA last sell?

21 Perham St, Chelmsford, MA last sold on Oct 18, 2016 for $3,000, according to the county's recorded deed.

How big is 21 Perham St, Chelmsford, MA?

21 Perham St, Chelmsford, MA has 5 bedrooms, 3 bathrooms, 2,120 square feet of living space and a 0.74-acre lot.

When was 21 Perham St, Chelmsford, MA built?

21 Perham St, Chelmsford, MA was built in 1972, making it 54 years old. It is a duplex single home. The building has 2 stories.

What schools serve 21 Perham St, Chelmsford, MA?

21 Perham St, Chelmsford, MA is assigned to Center Elementary School (elementary), rated B+; McCarthy Middle School (middle), rated B+; Chelmsford High School (high), rated A-. All sit in Chelmsford School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Perham St, Chelmsford, MA compare to other homes in Chelmsford 01824?

Among the 8,861 homes in Chelmsford 01824, it is bigger than 72% of them (2,120 ft² against a typical 1,662 ft²), its lot is bigger than 47% of them (0.74 ac against a typical 0.8 ac) and it is newer than 68% of them (1972 against a typical 1965). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 21 Perham St, Chelmsford, MA?

The 2026 property tax bill for 21 Perham St, Chelmsford, MA was $9,667. The county assessed it at $728,500.

More homes on Perham St

Closest homes

More homes in Chelmsford 01824

Assigned schools

Explore the area

See this home in context

Open 21 Perham St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map