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Single Family ResidenceResidential
$1,233,269$1,078 / 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 81How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $530,100 on Dec 11, 2017

4 NEPTUNE LN

BIDDEFORD, ME 04005
3
Beds
1.5
Baths
1,144 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.
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.
1949
Year BuiltThe year the home was originally built, according to county records.
1
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

$1.2M
$1M low$1.5M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$530,100 · Dec 11, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,703 (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.$783,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$615,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$167,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$780,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$978,025

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
CountyYORK
Lot (acres)The size of the land the home sits on, from county records.0.12
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Electric
FireplaceWhether the home has a fireplace, and what kind.Yes
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(7)

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
Biddeford Middle SchoolD
Middle · Grades 5–7 · 5.6 mi
E
Biddeford Primary SchoolD-
Elementary · Grades KG–2 · 5.9 mi
H
Biddeford High SchoolF
High · Grades 8–12 · 6.9 mi

District: Biddeford

Neighborhood · ZIP 04005These 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.93
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.89

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
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.26,162
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.486 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$73,803
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$90,161
Average tempThe average temperature here across a full year.46°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.57%

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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

4 Neptune Ln 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 91% of homes in Biddeford 04005
  • Costs more per square foot than 96% of homes in Biddeford 04005
  • Smaller than 74% of homes in Biddeford 04005
  • Has a smaller lot than 92% of homes in Biddeford 04005
  • Older than 78% of homes in York County

What homes are worth in Biddeford 04005

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

This home
$288K$2.5M

This home is worth more than 91% of homes in Biddeford 04005.

How it measures up in Biddeford 04005

The dot is this home. The mark in the middle is the typical home in Biddeford 04005.

Estimated value$1,233,269
CheaperTypical $538,969Pricier

Pricier than 91% of homes nearby

Price per ft²$1078
CheaperTypical $397Pricier

Pricier than 96% of homes nearby

Living area1,144 ft²
SmallerTypical 1,556 ft²Bigger

Bigger than 26% of homes nearby

Lot size0.12 ac
SmallerTypical 0.4 acBigger

Bigger than 8% of homes nearby

Year built1949
OlderTypical 1966Newer

Newer than 38% of homes nearby

How 4 Neptune Ln ranks against every home in each area.
MeasureThis homeBiddeford 04005York County
Estimated valuepricier than$1,233,26991% of homes91% of homes
Price per ft²pricier than$107896% of homes96% of homes
Living areabigger than1,144 ft²26% of homes35% of homes
Lot sizebigger than0.12 ac8% of homes9% of homes
Year builtnewer than194938% of homes22% of homes

About 4 Neptune Ln

How much is 4 Neptune Ln, Biddeford, ME worth?

The TopHap Estimate for 4 Neptune Ln, Biddeford, ME is $1,233,269 as of Oct 21, 2026. The likely range is $1,000,365 to $1,466,173. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4 Neptune Ln, Biddeford, ME last sell?

4 Neptune Ln, Biddeford, ME last sold on Dec 11, 2017 for $530,100, according to the county's recorded deed.

How big is 4 Neptune Ln, Biddeford, ME?

4 Neptune Ln, Biddeford, ME has 3 bedrooms, 1.5 bathrooms, 1,144 square feet of living space and a 0.12-acre lot.

When was 4 Neptune Ln, Biddeford, ME built?

4 Neptune Ln, Biddeford, ME was built in 1949, making it 77 years old. It is a conventional home. The building has 1 story.

What schools serve 4 Neptune Ln, Biddeford, ME?

4 Neptune Ln, Biddeford, ME is assigned to Biddeford Middle School (middle), rated D; Biddeford Primary School (elementary), rated D-; Biddeford High School (high), rated F. All sit in Biddeford. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4 Neptune Ln, Biddeford, ME compare to other homes in Biddeford 04005?

Among the 7,483 homes in Biddeford 04005, it is worth more than 91% of them ($1,233,269 against a typical $538,969), its price per square foot is higher than 96% of them ($1078 against a typical $397), it is bigger than 26% of them (1,144 ft² against a typical 1,556 ft²), its lot is bigger than 8% of them (0.12 ac against a typical 0.4 ac) and it is newer than 38% of them (1949 against a typical 1966). Measured against all of York County, it is worth more than 91% 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 4 Neptune Ln, Biddeford, ME?

The 2025 property tax bill for 4 Neptune Ln, Biddeford, ME was $11,703. The county assessed it at $783,300.

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