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Single Family ResidenceResidential
$498,188$565 / 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 77How 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

123 UNION ST

BELFAST, ME 04915
3
Beds
2
Baths
881 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
2017
Year BuiltThe year the home was originally built, according to county records.
2
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

$498K
$384K low$612K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,123 (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.$435,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$161,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$274,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$434,800

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
CountyWALDO
Lot (acres)The size of the land the home sits on, from county records.0.19
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Heat Pump
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.

Neighborhood · ZIP 04915These 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.124
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 100.56

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.85%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
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.0.7%
PopulationHow many people live in this area.9,507
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.119 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$55,225
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,885
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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

123 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 82% of homes in Waldo County
  • Costs more per square foot than 85% of homes in Waldo County
  • Smaller than 75% of homes in Waldo County
  • Has a smaller lot than 97% of homes in Waldo County
  • Newer than 98% of homes in Belfast 04915

What homes are worth in Belfast 04915

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

This home
$81K$1.1M

This home is worth more than 74% of homes in Belfast 04915.

How it measures up in Belfast 04915

The dot is this home. The mark in the middle is the typical home in Belfast 04915.

Estimated value$498,188
CheaperTypical $361,303Pricier

Pricier than 74% of homes nearby

Price per ft²$565
CheaperTypical $399Pricier

Pricier than 72% of homes nearby

Living area881 ft²
SmallerTypical 960 ft²Bigger

Bigger than 39% of homes nearby

Lot size0.19 ac
SmallerTypical 1.2 acBigger

Bigger than 7% of homes nearby

Year built2017
OlderTypical 1973Newer

Newer than 98% of homes nearby

How 123 Union St ranks against every home in each area.
MeasureThis homeBelfast 04915Waldo County
Estimated valuepricier than$498,18874% of homes82% of homes
Price per ft²pricier than$56572% of homes85% of homes
Living areabigger than881 ft²39% of homes25% of homes
Lot sizebigger than0.19 ac7% of homes3% of homes
Year builtnewer than201798% of homes96% of homes

About 123 Union St

How much is 123 Union St, Belfast, ME worth?

The TopHap Estimate for 123 Union St, Belfast, ME is $498,188 as of Sep 24, 2026. The likely range is $384,282 to $612,094. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 123 Union St, Belfast, ME last sell?

123 Union St, Belfast, ME last sold on Apr 8, 2016, according to the county's recorded deed.

How big is 123 Union St, Belfast, ME?

123 Union St, Belfast, ME has 3 bedrooms, 2 bathrooms, 881 square feet of living space and a 0.19-acre lot.

When was 123 Union St, Belfast, ME built?

123 Union St, Belfast, ME was built in 2017, making it 9 years old. It is a conventional home. The building has 2 stories.

How does 123 Union St, Belfast, ME compare to other homes in Belfast 04915?

Among the 3,841 homes in Belfast 04915, it is worth more than 74% of them ($498,188 against a typical $361,303), its price per square foot is higher than 72% of them ($565 against a typical $399), it is bigger than 39% of them (881 ft² against a typical 960 ft²), its lot is bigger than 7% of them (0.19 ac against a typical 1.2 ac) and it is newer than 98% of them (2017 against a typical 1973). Measured against all of Waldo County, it is worth more than 82% 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 123 Union St, Belfast, ME?

The 2025 property tax bill for 123 Union St, Belfast, ME was $7,123. The county assessed it at $435,900.

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