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Single Family ResidenceResidential
$216,618$224 / 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 90How 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

521 RIVERSIDE DR

AUBURN, ME 04210
3
Beds
1
Baths
965 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.
2.4 ac
Lot SizeThe size of the land the home sits on, from county records.
1925
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$217K
$196K low$237K high
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.$155,093
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$124,074
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.29%
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.$61,525
WELLS FARGO MORTGAGE · recorded Jun 27, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,050 (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.$133,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$43,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$90,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$119,000

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.12 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.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.Cape Cod
CountyANDROSCOGGIN
Lot (acres)The size of the land the home sits on, from county records.2.40
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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.

Foreclosure Filings(3)

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

E
Walton SchoolC-
Elementary · Grades PK–6 · 0.7 mi
H
Edward Little High SchoolC-
High · Grades 9–12 · 1.9 mi
M
Auburn Middle SchoolC
Middle · Grades 7–8 · 2.4 mi

District: Auburn

Neighborhood · ZIP 04210These 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.116
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 100.92

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.25,276
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.384 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,499
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$88,888
Average tempThe average temperature here across a full year.45°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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
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

521 Riverside Dr 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 88% of homes in Auburn 04210
  • Costs less per square foot than 65% of homes in Androscoggin County
  • Smaller than 88% of homes in Auburn 04210
  • Has a bigger lot than 87% of homes in Auburn 04210
  • Older than 78% of homes in Androscoggin County

What homes are worth in Auburn 04210

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

This home
$160K$712K

This home is worth more than 12% of homes in Auburn 04210.

How it measures up in Auburn 04210

The dot is this home. The mark in the middle is the typical home in Auburn 04210.

Estimated value$216,618
CheaperTypical $309,235Pricier

Pricier than 12% of homes nearby

Price per ft²$224
CheaperTypical $222Pricier

Pricier than 51% of homes nearby

Living area965 ft²
SmallerTypical 1,536 ft²Bigger

Bigger than 12% of homes nearby

Lot size2.4 ac
SmallerTypical 0.39 acBigger

Bigger than 87% of homes nearby

Year built1925
OlderTypical 1948Newer

Newer than 37% of homes nearby

How 521 Riverside Dr ranks against every home in each area.
MeasureThis homeAuburn 04210Androscoggin County
Estimated valuepricier than$216,61812% of homes13% of homes
Price per ft²pricier than$22451% of homes35% of homes
Living areabigger than965 ft²12% of homes22% of homes
Lot sizebigger than2.4 ac87% of homes76% of homes
Year builtnewer than192537% of homes22% of homes

About 521 Riverside Dr

How much is 521 Riverside Dr, Auburn, ME worth?

The TopHap Estimate for 521 Riverside Dr, Auburn, ME is $216,618 as of Jul 14, 2026. The likely range is $196,016 to $237,220. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Riverside Dr, Auburn, ME last sell?

521 Riverside Dr, Auburn, ME last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 521 Riverside Dr, Auburn, ME?

521 Riverside Dr, Auburn, ME has 3 bedrooms, 1 bathrooms, 965 square feet of living space and a 2.40-acre lot.

When was 521 Riverside Dr, Auburn, ME built?

521 Riverside Dr, Auburn, ME was built in 1925, making it 101 years old. It is a cape cod home. The building has 2 stories.

What schools serve 521 Riverside Dr, Auburn, ME?

521 Riverside Dr, Auburn, ME is assigned to Walton School (elementary), rated C-; Edward Little High School (high), rated C-; Auburn Middle School (middle), rated C. All sit in Auburn. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Riverside Dr, Auburn, ME compare to other homes in Auburn 04210?

Among the 7,288 homes in Auburn 04210, it is worth more than 12% of them ($216,618 against a typical $309,235), its price per square foot is higher than 51% of them ($224 against a typical $222), it is bigger than 12% of them (965 ft² against a typical 1,536 ft²), its lot is bigger than 87% of them (2.4 ac against a typical 0.39 ac) and it is newer than 37% of them (1925 against a typical 1948). Measured against all of Androscoggin County, it is worth more than 13% 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 521 Riverside Dr, Auburn, ME?

The 2025 property tax bill for 521 Riverside Dr, Auburn, ME was $3,050. The county assessed it at $133,300.

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