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Single Family ResidenceResidential
$258,485$249 / 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 93How 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 $114,000 on Feb 15, 2008

20 UNION ST

FARMINGTON, NH 03835
3
Beds
1
Baths
1,037 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.
0.45 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
2
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

$258K
$242K low$275K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$114,000 · Feb 15, 2008

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,048 (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.$258,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$124,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$134,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$199,310

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.42 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

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.Cape Cod
CountySTRAFFORD
Lot (acres)The size of the land the home sits on, from county records.0.45
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.Metal
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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(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.

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

20 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 96% of homes in Farmington 03835
  • Costs less per square foot than 76% of homes in Strafford County
  • Smaller than 88% of homes in Farmington 03835
  • Has a smaller lot than 68% of homes in Farmington 03835
  • Older than 84% 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 4% 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$258,485
CheaperTypical $417,605Pricier

Pricier than 4% of homes nearby

Price per ft²$249
CheaperTypical $239Pricier

Pricier than 58% of homes nearby

Living area1,037 ft²
SmallerTypical 1,689 ft²Bigger

Bigger than 12% of homes nearby

Lot size0.45 ac
SmallerTypical 1.04 acBigger

Bigger than 32% of homes nearby

Year built1930
OlderTypical 1983Newer

Newer than 26% of homes nearby

How 20 Union St ranks against every home in each area.
MeasureThis homeFarmington 03835Strafford County
Estimated valuepricier than$258,4854% of homes4% of homes
Price per ft²pricier than$24958% of homes24% of homes
Living areabigger than1,037 ft²12% of homes16% of homes
Lot sizebigger than0.45 ac32% of homes38% of homes
Year builtnewer than193026% of homes16% of homes

About 20 Union St

How much is 20 Union St, Farmington, NH worth?

The TopHap Estimate for 20 Union St, Farmington, NH is $258,485 as of Aug 30, 2026. The likely range is $241,595 to $275,375. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Union St, Farmington, NH last sell?

20 Union St, Farmington, NH last sold on Feb 15, 2008 for $114,000, according to the county's recorded deed.

How big is 20 Union St, Farmington, NH?

20 Union St, Farmington, NH has 3 bedrooms, 1 bathrooms, 1,037 square feet of living space and a 0.45-acre lot.

When was 20 Union St, Farmington, NH built?

20 Union St, Farmington, NH was built in 1930, making it 96 years old. It is a cape cod home. The building has 2 stories.

What schools serve 20 Union St, Farmington, NH?

20 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 20 Union St, Farmington, NH compare to other homes in Farmington 03835?

Among the 2,535 homes in Farmington 03835, it is worth more than 4% of them ($258,485 against a typical $417,605), its price per square foot is higher than 58% of them ($249 against a typical $239), it is bigger than 12% of them (1,037 ft² against a typical 1,689 ft²), its lot is bigger than 32% of them (0.45 ac against a typical 1.04 ac) and it is newer than 26% of them (1930 against a typical 1983). Measured against all of Strafford County, it is worth more than 4% 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 20 Union St, Farmington, NH?

The 2025 property tax bill for 20 Union St, Farmington, NH was $4,048. The county assessed it at $258,800.

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