Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$857,868$422 / 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 94How 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
Last sold for $442,900 on May 13, 2005

40 DARTMOUTH DR

SMITHTOWN, NY 11787
4
Beds
1.5
Baths
2,033 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.
0.3 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$858K
$808K low$907K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$442,900 · May 13, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,171 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$5,760 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$320
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$5,440
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$720,000

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.Split Level
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.30
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
ViewThe type of view from the property, or another feature of the site that affects value.Suburban
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Shed · 128 ft²

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.

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

E
Dogwood Elementary SchoolB+
Elementary · Grades KG–5 · 0.5 mi
H
Smithtown High School EastA-
High · Grades 9–12 · 0.6 mi
M
Nesaquake Middle SchoolA+
Middle · Grades 6–8 · 0.8 mi

District: Smithtown Central School District

Neighborhood · ZIP 11787These 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.44
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.69

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
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.34,997
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,227 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$138,428
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$168,182
Average tempThe average temperature here across a full year.52°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.58%

Owner Tools

Do you own this home?
Claim this home

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

40 Dartmouth 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 more than 71% of homes in Suffolk County
  • Costs less per square foot than 66% of homes in St. James
  • Bigger than 68% of homes in Suffolk County
  • Older than 75% of homes in Smithtown 11787

What homes are worth in Smithtown 11787

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

This home
$529K$1.7M

This home is worth more than 65% of homes in Smithtown 11787.

How it measures up in Smithtown 11787

The dot is this home. The mark in the middle is the typical home in Smithtown 11787.

Estimated value$857,868
CheaperTypical $794,169Pricier

Pricier than 65% of homes nearby

Price per ft²$422
CheaperTypical $444Pricier

Pricier than 40% of homes nearby

Living area2,033 ft²
SmallerTypical 1,907 ft²Bigger

Bigger than 60% of homes nearby

Lot size0.3 ac
SmallerTypical 0.38 acBigger

Bigger than 39% of homes nearby

Year built1959
OlderTypical 1965Newer

Newer than 25% of homes nearby

How 40 Dartmouth Dr ranks against every home in each area.
MeasureThis homeSt. JamesSmithtown 11787Suffolk County
Estimated valuepricier than$857,86870% of homes65% of homes71% of homes
Price per ft²pricier than$42234% of homes40% of homes53% of homes
Living areabigger than2,033 ft²61% of homes60% of homes68% of homes
Lot sizebigger than0.3 ac56% of homes39% of homes54% of homes
Year builtnewer than195930% of homes25% of homes29% of homes

About 40 Dartmouth Dr

How much is 40 Dartmouth Dr, Smithtown, NY worth?

The TopHap Estimate for 40 Dartmouth Dr, Smithtown, NY is $857,868 as of Sep 24, 2026. The likely range is $808,419 to $907,317. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 40 Dartmouth Dr, Smithtown, NY last sell?

40 Dartmouth Dr, Smithtown, NY last sold on May 13, 2005 for $442,900, according to the county's recorded deed.

How big is 40 Dartmouth Dr, Smithtown, NY?

40 Dartmouth Dr, Smithtown, NY has 4 bedrooms, 1.5 bathrooms, 2,033 square feet of living space and a 0.30-acre lot.

When was 40 Dartmouth Dr, Smithtown, NY built?

40 Dartmouth Dr, Smithtown, NY was built in 1959, making it 67 years old. It is a split level home. The building has 1 story.

What schools serve 40 Dartmouth Dr, Smithtown, NY?

40 Dartmouth Dr, Smithtown, NY is assigned to Dogwood Elementary School (elementary), rated B+; Smithtown High School East (high), rated A-; Nesaquake Middle School (middle), rated A+. All sit in Smithtown Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 40 Dartmouth Dr, Smithtown, NY compare to other homes in Smithtown 11787?

Among the 11,486 homes in Smithtown 11787, it is worth more than 65% of them ($857,868 against a typical $794,169), its price per square foot is higher than 40% of them ($422 against a typical $444), it is bigger than 60% of them (2,033 ft² against a typical 1,907 ft²), its lot is bigger than 39% of them (0.3 ac against a typical 0.38 ac) and it is newer than 25% of them (1959 against a typical 1965). Measured against all of Suffolk County, it is worth more than 71% 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 40 Dartmouth Dr, Smithtown, NY?

The 2024 property tax bill for 40 Dartmouth Dr, Smithtown, NY was $14,171. The county assessed it at $5,760.

More homes on Dartmouth Dr

Closest homes

More homes in Smithtown 11787

Assigned schools

Explore the area

See this home in context

Open 40 Dartmouth Dr on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map