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Single Family ResidenceResidential
$399,816$463 / 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 89How 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

21 HARBORVIEW AVE

SOUTH PORTLAND, ME 04106
3
Beds
1
Baths
864 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$400K
$357K low$443K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,049 (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.$369,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$166,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$203,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$361,300

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.Ranch
CountyCUMBERLAND
Lot (acres)The size of the land the home sits on, from county records.0.11
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
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(3)

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
Frank I. Brown Elementary SchoolA
Elementary · Grades KG–4 · 0.6 mi
H
South Portland High SchoolC-
High · Grades 9–12 · 0.8 mi
M
South Portland Middle SchoolB-
Middle · Grades 5–8 · 2.3 mi

District: South Portland

Neighborhood · ZIP 04106These 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.94
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.84

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.4.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.26,989
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,953 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$87,445
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$107,811
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

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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

21 Harborview Ave 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 86% of homes in Cumberland County
  • Costs more per square foot than 76% of homes in Pleasantdale
  • Smaller than 90% of homes in South Portland 04106
  • Has a smaller lot than 94% of homes in Cumberland County
  • Older than 67% of homes in Cumberland County

What homes are worth in South Portland 04106

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

This home
$266K$1.5M

This home is worth more than 15% of homes in South Portland 04106.

How it measures up in South Portland 04106

The dot is this home. The mark in the middle is the typical home in South Portland 04106.

Estimated value$399,816
CheaperTypical $535,933Pricier

Pricier than 15% of homes nearby

Price per ft²$463
CheaperTypical $425Pricier

Pricier than 64% of homes nearby

Living area864 ft²
SmallerTypical 1,350 ft²Bigger

Bigger than 10% of homes nearby

Lot size0.11 ac
SmallerTypical 0.18 acBigger

Bigger than 15% of homes nearby

Year built1959
OlderTypical 1953Newer

Newer than 57% of homes nearby

How 21 Harborview Ave ranks against every home in each area.
MeasureThis homePleasantdaleSouth Portland 04106Cumberland County
Estimated valuepricier than$399,81615% of homes15% of homes14% of homes
Price per ft²pricier than$46376% of homes64% of homes67% of homes
Living areabigger than864 ft²14% of homes10% of homes10% of homes
Lot sizebigger than0.11 ac27% of homes15% of homes6% of homes
Year builtnewer than195963% of homes57% of homes33% of homes

About 21 Harborview Ave

How much is 21 Harborview Ave, South Portland, ME worth?

The TopHap Estimate for 21 Harborview Ave, South Portland, ME is $399,816 as of Oct 21, 2026. The likely range is $356,574 to $443,058. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Harborview Ave, South Portland, ME last sell?

21 Harborview Ave, South Portland, ME last sold on Sep 30, 2013, according to the county's recorded deed.

How big is 21 Harborview Ave, South Portland, ME?

21 Harborview Ave, South Portland, ME has 3 bedrooms, 1 bathrooms, 864 square feet of living space and a 0.11-acre lot.

When was 21 Harborview Ave, South Portland, ME built?

21 Harborview Ave, South Portland, ME was built in 1959, making it 67 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Harborview Ave, South Portland, ME?

21 Harborview Ave, South Portland, ME is assigned to Frank I. Brown Elementary School (elementary), rated A; South Portland High School (high), rated C-; South Portland Middle School (middle), rated B-. All sit in South Portland. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Harborview Ave, South Portland, ME compare to other homes in South Portland 04106?

Among the 8,919 homes in South Portland 04106, it is worth more than 15% of them ($399,816 against a typical $535,933), its price per square foot is higher than 64% of them ($463 against a typical $425), it is bigger than 10% of them (864 ft² against a typical 1,350 ft²), its lot is bigger than 15% of them (0.11 ac against a typical 0.18 ac) and it is newer than 57% of them (1959 against a typical 1953). Measured against all of Cumberland County, it is worth more than 14% 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 21 Harborview Ave, South Portland, ME?

The 2025 property tax bill for 21 Harborview Ave, South Portland, ME was $5,049. The county assessed it at $369,900.

More homes on Harborview Ave

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