Duplex (2 Units, Any Combination)Residential
Last sold for $449,900 on Dec 21, 2015
25 PORTER ST
BILLERICA, MA 01821
5
Beds
3 / 1
Baths
2,350 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.
0.57 ac
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
16
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.$449,900 · Dec 21, 2015
Tax & Assessment
Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,192 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$720,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$324,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$396,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$720,500
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.9 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.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Split Entry
CountyMiddlesex
Lot (acres)The size of the land the home sits on, from county records.0.57
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.Electric
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.In-Ground Pool
Transaction History(6)
Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.Foreclosure Filings(1)
Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.
MHE
Locke Middle SchoolB
Middle · Grades 5–7 · 0.4 mi
Billerica Memorial High SchoolC+
High · Grades 8–12 · 1.2 mi
John F KennedyB+
Elementary · Grades KG–4 · 1.3 mi
District: Billerica School District
Neighborhood · ZIP 01821These 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.40
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.82
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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.31,495
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,857 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$133,460
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$152,991
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%
Owner Tools
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How this home compares
25 Porter 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 75% of homes in Billerica 01821
- Has a bigger lot than 67% of homes in Middlesex County
- Newer than 65% of homes in Middlesex County
How it measures up in Billerica 01821
The dot is this home. The mark in the middle is the typical home in Billerica 01821.
Living area2,350 ft²
SmallerTypical 1,874 ft²Bigger
Bigger than 75% of homes nearby
Lot size0.57 ac
SmallerTypical 0.57 acBigger
Bigger than 50% of homes nearby
Year built1971
OlderTypical 1970Newer
Newer than 55% of homes nearby
| Measure | This home | Billerica 01821 | Middlesex County |
|---|---|---|---|
| Living areabigger than | 2,350 ft² | 75% of homes | 70% of homes |
| Lot sizebigger than | 0.57 ac | 50% of homes | 67% of homes |
| Year builtnewer than | 1971 | 55% of homes | 65% of homes |
About 25 Porter St
When did 25 Porter St, Billerica, MA last sell?
25 Porter St, Billerica, MA last sold on Dec 21, 2015 for $449,900, according to the county's recorded deed.
How big is 25 Porter St, Billerica, MA?
25 Porter St, Billerica, MA has 5 bedrooms, 3 bathrooms, 2,350 square feet of living space and a 0.57-acre lot.
When was 25 Porter St, Billerica, MA built?
25 Porter St, Billerica, MA was built in 1971, making it 55 years old. It is a split entry home. The building has 1 story.
What schools serve 25 Porter St, Billerica, MA?
25 Porter St, Billerica, MA is assigned to Locke Middle School (middle), rated B; Billerica Memorial High School (high), rated C+; John F Kennedy (elementary), rated B+. All sit in Billerica School District. Attendance boundaries change — confirm with the district before relying on an assignment.
How does 25 Porter St, Billerica, MA compare to other homes in Billerica 01821?
Among the 10,003 homes in Billerica 01821, it is bigger than 75% of them (2,350 ft² against a typical 1,874 ft²), its lot is bigger than 50% of them (0.57 ac against a typical 0.57 ac) and it is newer than 55% of them (1971 against a typical 1970). These shares are recounted nightly from the full county assessor record for each area, not from active listings.
What are the property taxes on 25 Porter St, Billerica, MA?
The 2025 property tax bill for 25 Porter St, Billerica, MA was $8,192. The county assessed it at $720,500.
More homes on Porter St
- 26 Porter St$701K3 bd · 1 ba · 2,210 ft² · Sold Jul 2026
- 19 Porter St$888K3 bd · 1 ba · 1,412 ft² · Sold $875K · Mar 2026
- 37 Porter St$705K3 bd · 2 ba · 2,035 ft² · Sold $691K · Jan 2026
- 30 Porter St$840K3 bd · 2.5 ba · 2,647 ft² · Sold $618K · May 2023
- 8 Porter St$751K4 bd · 1.5 ba · 2,167 ft² · Sold $620K · Jun 2022
- 14 Porter St$837K3 bd · 2.5 ba · 2,262 ft² · Sold $665K · Nov 2021
- 45 Porter St$777K2 bd · 2.5 ba · 1,611 ft² · Sold $620K · May 2021
- 32 Porter St$876K4 bd · 3.5 ba · 2,102 ft² · Sold $569K · Dec 2019
- 31 Porter St$779K3 bd · 2.5 ba · 1,894 ft² · Sold $1.8M · Mar 2019
- 17 Porter St$795K3 bd · 2.5 ba · 2,446 ft² · Sold $530K · Aug 2018
- 4 Porter St$853K3 bd · 2.5 ba · 2,680 ft² · Sold $560K · Jun 2018
- 38 Porter St$701K3 bd · 1.5 ba · 1,506 ft² · Sold $410K · Oct 2016
Closest homes
- 27 Porter St$795K120 ft · 4 bd · 2.5 ba · 2,836 ft² · Sold $204K · Apr 1999
- 23 Porter St$749K129 ft · 3 bd · 1.5 ba · 2,298 ft² · Sold Feb 2013
- 29 Porter St$718K258 ft · 3 bd · 2.5 ba · 2,028 ft² · Sold $325K · Feb 2009
- 24 Porter St$665K252 ft · 3 bd · 1.5 ba · 2,088 ft² · Sold $240K · Aug 1999
- 30 Pratt St$781K257 ft · 3 bd · 2 ba · 2,061 ft² · Sold Dec 2013
- 26 Porter St$701K226 ft · 3 bd · 1 ba · 2,210 ft² · Sold Jul 2026
- 22 Porter St$662K295 ft · 3 bd · 1 ba · 1,649 ft² · Sold Jan 1900
- 28 Pratt St$667K235 ft · 3 bd · 2.5 ba · 2,046 ft² · Sold $600K · Aug 2024
More homes in Billerica 01821
- 11 Governor Saltonstall Rd$614K3 bd · 1 ba · 1,616 ft² · Sold $666K · Sep 2026
- 6 Locke Rd$700K4 bd · 3 ba · 1,918 ft² · Sold $700K · Sep 2026
- 18 South St$580K3 bd · 1.5 ba · 1,932 ft² · Sold $550K · Sep 2026
- 14 Connolly Rd$797K3 bd · 2.5 ba · 2,474 ft² · Sold $150K · Sep 2026
- 5 Strawberry Ln$850K4 bd · 2.5 ba · 2,125 ft² · Sold $838K · Sep 2026
- 4 Robin Rd$620K4 bd · 1.5 ba · 1,176 ft² · Sold $615K · Sep 2026
- 10 Cunningham Ln$585K1.5 ba · 1,500 ft² · Sold $535K · Sep 2026
- 22 Greenleaf St$864K3 bd · 2 ba · 2,616 ft² · Sold Sep 2026
- 3 Bonnie Ln$745K3 bd · 2.5 ba · 2,075 ft² · Sold $745K · Sep 2026
- 2 Woodcrest Cir$1M4 bd · 3.5 ba · 2,948 ft² · Sold $856K · Sep 2026
- 29 Governor Hutchinson Rd$662K3 bd · 1.5 ba · 1,649 ft² · Sold $665K · Sep 2026
- 10 Shawnee Cir$937K4 bd · 2.5 ba · 2,435 ft² · Sold $525K · Sep 2026
Assigned schools
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