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Single Family ResidenceResidential
$322,184$173 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $58,200 on Jul 22, 2010

18 UNION ST

FARMINGTON, NH 03835
4
Beds
1
Baths
1,860 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.
3,920 ft²
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$322K
$310K low$334K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$58,200 · Jul 22, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,471 (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.$221,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$83,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$138,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$280,535

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
CountySTRAFFORD
Lot (acres)The size of the land the home sits on, from county records.0.09
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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
Henry Wilson Memorial SchoolB+
Middle · Grades 4–8 · 0.2 mi
H
Farmington Senior High SchoolF
High · Grades 9–12 · 0.4 mi
E
Valley View Community SchoolD
Elementary · Grades PK–3 · 0.6 mi

District: Farmington School District

Neighborhood · ZIP 03835These 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.136
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.109

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.7,033
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.189 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$62,726
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$77,442
Average tempThe average temperature here across a full year.44°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.54%

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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

18 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 less than 91% of homes in Strafford County
  • Costs less per square foot than 98% of homes in Strafford County
  • Among the smallest lots in Farmington 03835
  • Older than 89% of homes in Strafford County

What homes are worth in Farmington 03835

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

This home
$216K$789K

This home is worth more than 16% of homes in Farmington 03835.

How it measures up in Farmington 03835

The dot is this home. The mark in the middle is the typical home in Farmington 03835.

Estimated value$322,184
CheaperTypical $418,240Pricier

Pricier than 16% of homes nearby

Price per ft²$173
CheaperTypical $239Pricier

Pricier than 8% of homes nearby

Living area1,860 ft²
SmallerTypical 1,687 ft²Bigger

Bigger than 62% of homes nearby

Lot size3,920 ft²
SmallerTypical 1.05 acBigger

Smaller than almost all homes nearby

Year built1900
OlderTypical 1983Newer

Newer than 21% of homes nearby

How 18 Union St ranks against every home in each area.
MeasureThis homeFarmington 03835Strafford County
Estimated valuepricier than$322,18416% of homes9% of homes
Price per ft²pricier than$1738% of homes2% of homes
Living areabigger than1,860 ft²62% of homes61% of homes
Lot sizebigger than3,920 ft²almost no homesalmost no homes
Year builtnewer than190021% of homes11% of homes

About 18 Union St

How much is 18 Union St, Farmington, NH worth?

The TopHap Estimate for 18 Union St, Farmington, NH is $322,184 as of Aug 30, 2026. The likely range is $310,200 to $334,168. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Union St, Farmington, NH last sell?

18 Union St, Farmington, NH last sold on Jul 22, 2010 for $58,200, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 18 Union St, Farmington, NH?

18 Union St, Farmington, NH has 4 bedrooms, 1 bathrooms, 1,860 square feet of living space and a 0.09-acre lot.

When was 18 Union St, Farmington, NH built?

18 Union St, Farmington, NH was built in 1900, making it 126 years old. It is a conventional home. The building has 2 stories.

What schools serve 18 Union St, Farmington, NH?

18 Union St, Farmington, NH is assigned to Henry Wilson Memorial School (middle), rated B+; Farmington Senior High School (high), rated F; Valley View Community School (elementary), rated D. All sit in Farmington School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Union St, Farmington, NH compare to other homes in Farmington 03835?

Among the 2,535 homes in Farmington 03835, it is worth more than 16% of them ($322,184 against a typical $418,240), its price per square foot is higher than 8% of them ($173 against a typical $239), it is bigger than 62% of them (1,860 ft² against a typical 1,687 ft²), its lot is bigger than almost none of them (3,920 ft² against a typical 1.05 ac) and it is newer than 21% of them (1900 against a typical 1983). Measured against all of Strafford County, it is worth more than 9% 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 Union St, Farmington, NH?

The 2025 property tax bill for 18 Union St, Farmington, NH was $3,471. The county assessed it at $221,900.

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