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Single Family ResidenceResidential
$326,636$239 / 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 80How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $280,000 on May 26, 2023

21 FREDERICK ST

ROCKLAND, ME 04841
3
Beds
2
Baths
1,367 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$327K
$260K low$393K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$280,000 · May 26, 2023
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$60,636
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$48,509
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.82%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$266,000
CMG MORTGAGE INC · P · recorded May 26, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,357 (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.$323,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$72,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$250,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$181,300

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.Conventional
CountyKNOX
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1977
Lot (acres)The size of the land the home sits on, from county records.0.22
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(2)

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(3)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

H
Oceanside High SchoolD
High · Grades 9–12 · 0.3 mi
E
South SchoolC+
Elementary · Grades KG–5 · 1.5 mi
M
Oceanside Middle SchoolB-
Middle · Grades 6–8 · 4.6 mi

District: Regional School Unit 13

Neighborhood · ZIP 04841These 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.135
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.50

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.88%
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.17%
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.6,960
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.526 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$53,416
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$65,512
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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 Frederick 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.

  • Costs less per square foot than 66% of homes in Knox County
  • Has a smaller lot than 90% of homes in Knox County
  • Older than 65% of homes in Knox County

What homes are worth in Rockland 04841

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

This home
$162K$930K

This home is worth more than 44% of homes in Rockland 04841.

How it measures up in Rockland 04841

The dot is this home. The mark in the middle is the typical home in Rockland 04841.

Estimated value$326,636
CheaperTypical $345,677Pricier

Pricier than 44% of homes nearby

Price per ft²$239
CheaperTypical $245Pricier

Pricier than 46% of homes nearby

Living area1,367 ft²
SmallerTypical 1,461 ft²Bigger

Bigger than 44% of homes nearby

Lot size0.22 ac
SmallerTypical 0.27 acBigger

Bigger than 39% of homes nearby

Year built1950
OlderTypical 1925Newer

Newer than 58% of homes nearby

How 21 Frederick St ranks against every home in each area.
MeasureThis homeRockland 04841Knox County
Estimated valuepricier than$326,63644% of homes37% of homes
Price per ft²pricier than$23946% of homes34% of homes
Living areabigger than1,367 ft²44% of homes42% of homes
Lot sizebigger than0.22 ac39% of homes10% of homes
Year builtnewer than195058% of homes35% of homes

About 21 Frederick St

How much is 21 Frederick St, Rockland, ME worth?

The TopHap Estimate for 21 Frederick St, Rockland, ME is $326,636 as of Jul 14, 2026. The likely range is $259,933 to $393,339. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Frederick St, Rockland, ME last sell?

21 Frederick St, Rockland, ME last sold on May 26, 2023 for $280,000, according to the county's recorded deed.

How big is 21 Frederick St, Rockland, ME?

21 Frederick St, Rockland, ME has 3 bedrooms, 2 bathrooms, 1,367 square feet of living space and a 0.22-acre lot.

When was 21 Frederick St, Rockland, ME built?

21 Frederick St, Rockland, ME was built in 1950, making it 76 years old. It is a conventional home. The building has 2 stories.

What schools serve 21 Frederick St, Rockland, ME?

21 Frederick St, Rockland, ME is assigned to Oceanside High School (high), rated D; South School (elementary), rated C+; Oceanside Middle School (middle), rated B-. All sit in Regional School Unit 13. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Frederick St, Rockland, ME compare to other homes in Rockland 04841?

Among the 2,704 homes in Rockland 04841, it is worth more than 44% of them ($326,636 against a typical $345,677), its price per square foot is higher than 46% of them ($239 against a typical $245), it is bigger than 44% of them (1,367 ft² against a typical 1,461 ft²), its lot is bigger than 39% of them (0.22 ac against a typical 0.27 ac) and it is newer than 58% of them (1950 against a typical 1925). Measured against all of Knox County, it is worth more than 37% 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 Frederick St, Rockland, ME?

The 2025 property tax bill for 21 Frederick St, Rockland, ME was $5,357. The county assessed it at $323,100.

More homes on Frederick St

Closest homes

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Assigned schools

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