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Single Family ResidenceResidential
$803,593
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 74How 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

18 MAIN ST

CASTINE, ME 04421
0
Baths
0.51 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$804K
$593K low$1M 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.$803,593
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$642,874

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,961 (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.$922,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$252,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$669,400

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyHANCOCK
Lot (acres)The size of the land the home sits on, from county records.0.51
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
Adams School
Elementary · Grades PK–8 · 0.2 mi

District: Castine

Neighborhood · ZIP 04421These 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.70
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 100.53

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.55%
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.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.1,245
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.65 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,417
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,357
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

18 Main 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 85% of homes in Hancock County
  • Has a smaller lot than 82% of homes in Hancock County

What homes are worth in Castine 04421

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

This home
$136K$2M

This home is worth more than 71% of homes in Castine 04421.

How it measures up in Castine 04421

The dot is this home. The mark in the middle is the typical home in Castine 04421.

Estimated value$803,593
CheaperTypical $578,201Pricier

Pricier than 71% of homes nearby

Lot size0.51 ac
SmallerTypical 1.25 acBigger

Bigger than 30% of homes nearby

How 18 Main St ranks against every home in each area.
MeasureThis homeCastine 04421Hancock County
Estimated valuepricier than$803,59371% of homes85% of homes
Lot sizebigger than0.51 ac30% of homes18% of homes

About 18 Main St

How much is 18 Main St, Castine, ME worth?

The TopHap Estimate for 18 Main St, Castine, ME is $803,593 as of Jul 14, 2026. The likely range is $592,988 to $1,014,198. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Main St, Castine, ME last sell?

18 Main St, Castine, ME last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 18 Main St, Castine, ME?

18 Main St, Castine, ME is assigned to Adams School (elementary). All sit in Castine. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Main St, Castine, ME compare to other homes in Castine 04421?

Among the 341 homes in Castine 04421, it is worth more than 71% of them ($803,593 against a typical $578,201) and its lot is bigger than 30% of them (0.51 ac against a typical 1.25 ac). Measured against all of Hancock County, it is worth more than 85% 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 18 Main St, Castine, ME?

The 2025 property tax bill for 18 Main St, Castine, ME was $9,961. The county assessed it at $922,300.

Closest homes

More homes in Castine 04421

Assigned schools

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