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Single Family ResidenceResidential
$244,181$242 / 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

640 E LOOS ST

HARTFORD, WI 53027
3
Beds
1.5
Baths
1,008 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1954
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$244K
$230K low$259K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,271 (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.$191,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$41,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$150,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$232,645

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.Ranch
CountyWASHINGTON
Lot (acres)The size of the land the home sits on, from county records.0.22
RoofThe main material covering the roof, such as asphalt shingle or tile.Shingle
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
Lincoln Elementary SchoolB-
Elementary · Grades PK–5 · 0.6 mi
H
Hartford High SchoolC+
High · Grades 9–12 · 1.0 mi
M
Central Middle SchoolC-
Middle · Grades 6–8 · 1.2 mi

District: Hartford Union High School District

Neighborhood · ZIP 53027These 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.100
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.81
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.21

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.4%
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.24,479
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.258 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,697
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,318
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.33 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

640 E Loos 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 Hartford 53027
  • Smaller than 96% of homes in Hartford 53027
  • Has a smaller lot than 86% of homes in Washington County
  • Older than 84% of homes in Washington County

What homes are worth in Hartford 53027

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

This home
$216K$1M

This home is worth more than 4% of homes in Hartford 53027.

How it measures up in Hartford 53027

The dot is this home. The mark in the middle is the typical home in Hartford 53027.

Estimated value$244,181
CheaperTypical $417,464Pricier

Pricier than 4% of homes nearby

Price per ft²$242
CheaperTypical $222Pricier

Pricier than 64% of homes nearby

Living area1,008 ft²
SmallerTypical 1,698 ft²Bigger

Bigger than 4% of homes nearby

Lot size0.22 ac
SmallerTypical 0.33 acBigger

Bigger than 21% of homes nearby

Year built1954
OlderTypical 1997Newer

Newer than 23% of homes nearby

How 640 E Loos St ranks against every home in each area.
MeasureThis homeHartford 53027Washington County
Estimated valuepricier than$244,1814% of homes10% of homes
Price per ft²pricier than$24264% of homes61% of homes
Living areabigger than1,008 ft²4% of homes5% of homes
Lot sizebigger than0.22 ac21% of homes14% of homes
Year builtnewer than195423% of homes16% of homes

About 640 E Loos St

How much is 640 E Loos St, Hartford, WI worth?

The TopHap Estimate for 640 E Loos St, Hartford, WI is $244,181 as of Sep 24, 2026. The likely range is $229,839 to $258,523. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 E Loos St, Hartford, WI last sell?

640 E Loos St, Hartford, WI last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 640 E Loos St, Hartford, WI?

640 E Loos St, Hartford, WI has 3 bedrooms, 1.5 bathrooms, 1,008 square feet of living space and a 0.22-acre lot.

When was 640 E Loos St, Hartford, WI built?

640 E Loos St, Hartford, WI was built in 1954, making it 72 years old. It is a ranch home. The building has 1 story.

What schools serve 640 E Loos St, Hartford, WI?

640 E Loos St, Hartford, WI is assigned to Lincoln Elementary School (elementary), rated B-; Hartford High School (high), rated C+; Central Middle School (middle), rated C-. All sit in Hartford Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 640 E Loos St, Hartford, WI compare to other homes in Hartford 53027?

Among the 8,610 homes in Hartford 53027, it is worth more than 4% of them ($244,181 against a typical $417,464), its price per square foot is higher than 64% of them ($242 against a typical $222), it is bigger than 4% of them (1,008 ft² against a typical 1,698 ft²), its lot is bigger than 21% of them (0.22 ac against a typical 0.33 ac) and it is newer than 23% of them (1954 against a typical 1997). Measured against all of Washington County, it is worth more than 10% 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 640 E Loos St, Hartford, WI?

The 2025 property tax bill for 640 E Loos St, Hartford, WI was $2,271. The county assessed it at $191,300.

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