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Single Family ResidenceResidential
$1,540,274$428 / 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 73How 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

137 UNION ST

ROCKPORT, ME 04856
5
Beds
3.5
Baths
3,602 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.
5.39 ac
Lot SizeThe size of the land the home sits on, from county records.
1929
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1.5M
$1.1M low$2M 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.$1,540,274
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$1,232,219

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$16,641 (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.$1,219,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$181,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,037,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,219,100

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.Historical
CountyKNOX
Lot (acres)The size of the land the home sits on, from county records.5.39
RoofThe main material covering the roof, such as asphalt shingle or tile.Slate
HeatingThe type of heating system in the home.Steam
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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(1)

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
Camden-Rockport Middle SchoolA
Middle · Grades 5–8 · 1.1 mi
E
Camden-Rockport Elementary SchoolA
Elementary · Grades PK–4 · 1.3 mi
H
Camden Hills Regional High SchoolA
High · Grades 9–12 · 1.5 mi

District: School Administrative District 28

Neighborhood · ZIP 04856These 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.111
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.77
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.53

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.81%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.7%
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.3,784
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.158 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$82,890
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,265
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.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

137 Union 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.

  • Worth more than 95% of homes in Knox County
  • Costs more per square foot than 81% of homes in Knox County
  • Bigger than 96% of homes in Knox County
  • Has a bigger lot than 87% of homes in Rockport 04856
  • Older than 77% of homes in Rockport 04856

What homes are worth in Rockport 04856

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

This home
$202K$2M

This home is worth more than 88% of homes in Rockport 04856.

How it measures up in Rockport 04856

The dot is this home. The mark in the middle is the typical home in Rockport 04856.

Estimated value$1,540,274
CheaperTypical $632,611Pricier

Pricier than 88% of homes nearby

Price per ft²$428
CheaperTypical $356Pricier

Pricier than 68% of homes nearby

Living area3,602 ft²
SmallerTypical 1,818 ft²Bigger

Bigger than 94% of homes nearby

Lot size5.39 ac
SmallerTypical 1.4 acBigger

Bigger than 87% of homes nearby

Year built1929
OlderTypical 1982Newer

Newer than 23% of homes nearby

How 137 Union St ranks against every home in each area.
MeasureThis homeRockport 04856Knox County
Estimated valuepricier than$1,540,27488% of homes95% of homes
Price per ft²pricier than$42868% of homes81% of homes
Living areabigger than3,602 ft²94% of homes96% of homes
Lot sizebigger than5.39 ac87% of homes84% of homes
Year builtnewer than192923% of homes28% of homes

About 137 Union St

How much is 137 Union St, Rockport, ME worth?

The TopHap Estimate for 137 Union St, Rockport, ME is $1,540,274 as of Jul 14, 2026. The likely range is $1,122,383 to $1,958,165. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 137 Union St, Rockport, ME last sell?

137 Union St, Rockport, ME last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 137 Union St, Rockport, ME?

137 Union St, Rockport, ME has 5 bedrooms, 3.5 bathrooms, 3,602 square feet of living space and a 5.39-acre lot.

When was 137 Union St, Rockport, ME built?

137 Union St, Rockport, ME was built in 1929, making it 97 years old. It is a historical home. The building has 2 stories.

What schools serve 137 Union St, Rockport, ME?

137 Union St, Rockport, ME is assigned to Camden-Rockport Middle School (middle), rated A; Camden-Rockport Elementary School (elementary), rated A; Camden Hills Regional High School (high), rated A. All sit in School Administrative District 28. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 137 Union St, Rockport, ME compare to other homes in Rockport 04856?

Among the 5,514 homes in Rockport 04856, it is worth more than 88% of them ($1,540,274 against a typical $632,611), its price per square foot is higher than 68% of them ($428 against a typical $356), it is bigger than 94% of them (3,602 ft² against a typical 1,818 ft²), its lot is bigger than 87% of them (5.39 ac against a typical 1.4 ac) and it is newer than 23% of them (1929 against a typical 1982). Measured against all of Knox County, it is worth more than 95% 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 137 Union St, Rockport, ME?

The 2025 property tax bill for 137 Union St, Rockport, ME was $16,641. The county assessed it at $1,219,100.

More homes on Union St

Closest homes

More homes in Rockport 04856

Assigned schools

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