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Single Family ResidenceResidential
$547,629$316 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $435,000 on Apr 8, 2020

18 PORTER RD

LITTLETON, MA 01460
5
Beds
4.5
Baths
1,734 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.
3 ac
Lot SizeThe size of the land the home sits on, from county records.
1975
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$548K
$526K low$569K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$435,000 · Apr 8, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,533 (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.$608,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$298,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$310,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$538,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$612,277

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.160 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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Contemporary
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.3.00
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.Forced Air With Air Conditioning
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(9)

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.

H
Littleton High SchoolA
High · Grades 9–12 · 0.9 mi
M
Littleton Middle SchoolA
Middle · Grades 6–8 · 1.8 mi
E
Shaker Lane Elementary School
Elementary · Grades PK–2 · 2.9 mi

District: Littleton School District

Neighborhood · ZIP 01460These 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.53
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 100.77

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
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.10,435
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.593 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$145,801
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$165,869
Average tempThe average temperature here across a full year.48°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%

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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

18 Porter Rd 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.

  • Worth less than 80% of homes in Middlesex County
  • Costs less per square foot than 88% of homes in Middlesex County
  • Smaller than 65% of homes in Littleton 01460
  • Has a bigger lot than 92% of homes in Littleton 01460
  • Newer than 68% of homes in Middlesex County

What homes are worth in Littleton 01460

Each bar is how many homes fall in that price range. The marker is this home.

This home
$347K$1.3M

This home is worth more than 23% of homes in Littleton 01460.

How it measures up in Littleton 01460

The dot is this home. The mark in the middle is the typical home in Littleton 01460.

Estimated value$547,629
CheaperTypical $713,555Pricier

Pricier than 23% of homes nearby

Price per ft²$316
CheaperTypical $357Pricier

Pricier than 22% of homes nearby

Living area1,734 ft²
SmallerTypical 2,053 ft²Bigger

Bigger than 35% of homes nearby

Lot size3 ac
SmallerTypical 0.92 acBigger

Bigger than 92% of homes nearby

Year built1975
OlderTypical 1977Newer

Newer than 49% of homes nearby

How 18 Porter Rd ranks against every home in each area.
MeasureThis homeLittleton 01460Middlesex County
Estimated valuepricier than$547,62923% of homes20% of homes
Price per ft²pricier than$31622% of homes12% of homes
Living areabigger than1,734 ft²35% of homes46% of homes
Lot sizebigger than3 ac92% of homes90% of homes
Year builtnewer than197549% of homes68% of homes

About 18 Porter Rd

How much is 18 Porter Rd, Littleton, MA worth?

The TopHap Estimate for 18 Porter Rd, Littleton, MA is $547,629 as of Oct 21, 2026. The likely range is $525,761 to $569,497. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Porter Rd, Littleton, MA last sell?

18 Porter Rd, Littleton, MA last sold on Apr 8, 2020 for $435,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 18 Porter Rd, Littleton, MA?

18 Porter Rd, Littleton, MA has 5 bedrooms, 4.5 bathrooms, 1,734 square feet of living space and a 3.00-acre lot.

When was 18 Porter Rd, Littleton, MA built?

18 Porter Rd, Littleton, MA was built in 1975, making it 51 years old. It is a contemporary home. The building has 3 stories.

What schools serve 18 Porter Rd, Littleton, MA?

18 Porter Rd, Littleton, MA is assigned to Littleton High School (high), rated A; Littleton Middle School (middle), rated A; Shaker Lane Elementary School (elementary). All sit in Littleton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Porter Rd, Littleton, MA compare to other homes in Littleton 01460?

Among the 3,400 homes in Littleton 01460, it is worth more than 23% of them ($547,629 against a typical $713,555), its price per square foot is higher than 22% of them ($316 against a typical $357), it is bigger than 35% of them (1,734 ft² against a typical 2,053 ft²), its lot is bigger than 92% of them (3 ac against a typical 0.92 ac) and it is newer than 49% of them (1975 against a typical 1977). Measured against all of Middlesex County, it is worth more than 20% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 18 Porter Rd, Littleton, MA?

The 2026 property tax bill for 18 Porter Rd, Littleton, MA was $8,533. The county assessed it at $608,600.

More homes on Porter Rd

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