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Single Family ResidenceResidential
$303,383$287 / 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 86How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $250,000 on Jul 10, 2024

21 MAINEWOOD AVE

ORONO, ME 04473
3
Beds
2.5
Baths
1,056 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.
1955
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$303K
$261K low$346K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$250,000 · Jul 10, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,611 (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.$231,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$47,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$184,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$212,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$236,645

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
CountyPENOBSCOT
Lot (acres)The size of the land the home sits on, from county records.0.40
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

Transaction History(5)

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.

M
Orono Middle SchoolA-
Middle · Grades 6–8 · 0.4 mi
H
Orono High SchoolB
High · Grades 9–12 · 0.5 mi
E
Asa C Adams SchoolA+
Elementary · Grades PK–5 · 0.6 mi

District: Regional School Unit 26

Neighborhood · ZIP 04473These 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.76
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.76
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.59

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.90%
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.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.11,793
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.602 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,243
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$91,508
Average tempThe average temperature here across a full year.44°F
Annual precipHow much rain and melted snow falls here in a typical year.41 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

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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 Mainewood 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.

  • Costs more per square foot than 80% of homes in Orono 04473
  • Smaller than 80% of homes in Orono 04473
  • Has a smaller lot than 68% of homes in Penobscot County

What homes are worth in Orono 04473

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

This home
$131K$713K

This home is worth more than 36% of homes in Orono 04473.

How it measures up in Orono 04473

The dot is this home. The mark in the middle is the typical home in Orono 04473.

Estimated value$303,383
CheaperTypical $342,824Pricier

Pricier than 36% of homes nearby

Price per ft²$287
CheaperTypical $226Pricier

Pricier than 80% of homes nearby

Living area1,056 ft²
SmallerTypical 1,540 ft²Bigger

Bigger than 20% of homes nearby

Lot size0.4 ac
SmallerTypical 0.49 acBigger

Bigger than 42% of homes nearby

Year built1955
OlderTypical 1957Newer

Newer than 49% of homes nearby

How 21 Mainewood Ave ranks against every home in each area.
MeasureThis homeOrono 04473Penobscot County
Estimated valuepricier than$303,38336% of homes57% of homes
Price per ft²pricier than$28780% of homes76% of homes
Living areabigger than1,056 ft²20% of homes23% of homes
Lot sizebigger than0.4 ac42% of homes32% of homes
Year builtnewer than195549% of homes40% of homes

About 21 Mainewood Ave

How much is 21 Mainewood Ave, Orono, ME worth?

The TopHap Estimate for 21 Mainewood Ave, Orono, ME is $303,383 as of Sep 24, 2026. The likely range is $260,688 to $346,078. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Mainewood Ave, Orono, ME last sell?

21 Mainewood Ave, Orono, ME last sold on Jul 10, 2024 for $250,000, according to the county's recorded deed.

How big is 21 Mainewood Ave, Orono, ME?

21 Mainewood Ave, Orono, ME has 3 bedrooms, 2.5 bathrooms, 1,056 square feet of living space and a 0.40-acre lot.

When was 21 Mainewood Ave, Orono, ME built?

21 Mainewood Ave, Orono, ME was built in 1955, making it 71 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Mainewood Ave, Orono, ME?

21 Mainewood Ave, Orono, ME is assigned to Orono Middle School (middle), rated A-; Orono High School (high), rated B; Asa C Adams School (elementary), rated A+. All sit in Regional School Unit 26. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Mainewood Ave, Orono, ME compare to other homes in Orono 04473?

Among the 1,809 homes in Orono 04473, it is worth more than 36% of them ($303,383 against a typical $342,824), its price per square foot is higher than 80% of them ($287 against a typical $226), it is bigger than 20% of them (1,056 ft² against a typical 1,540 ft²), its lot is bigger than 42% of them (0.4 ac against a typical 0.49 ac) and it is newer than 49% of them (1955 against a typical 1957). Measured against all of Penobscot County, it is worth more than 57% 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 Mainewood Ave, Orono, ME?

The 2025 property tax bill for 21 Mainewood Ave, Orono, ME was $4,611. The county assessed it at $231,700.

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