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Single Family ResidentialResidential
$108,118
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 66How 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

643 PROSPECT AVE

GRAFTON, ND 58237
0
Baths
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1915
Year BuiltThe year the home was originally built, according to county records.

Valuation

$108K
$71K low$145K high

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$32,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$26,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$23,850
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$65,000

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.27
40
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
47
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
34
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
15
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.8 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.1 percent flood zone

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 Residential
CountyWALSH
Lot (acres)The size of the land the home sits on, from county records.0.24
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.

H
Grafton High SchoolC-
High · Grades 9–12 · 1.2 mi
M
Grafton Junior High SchoolD-
Middle · Grades 7–8 · 1.3 mi
E
Century Elementary SchoolD-
Elementary · Grades PK–6 · 1.3 mi

District: Grafton Public School District 18

Neighborhood · ZIP 58237These 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.125
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.8

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.86%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.4,992
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.20 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$60,351
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$91,787
Average tempThe average temperature here across a full year.39°F
Annual precipHow much rain and melted snow falls here in a typical year.19 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

643 Prospect Ave 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.

  • Has a smaller lot than 75% of homes in Walsh County
  • Older than 86% of homes in Walsh County

What homes are worth in Grafton 58237

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

This home
$29K$477K

This home is worth more than 39% of homes in Grafton 58237.

How it measures up in Grafton 58237

The dot is this home. The mark in the middle is the typical home in Grafton 58237.

Estimated value$108,118
CheaperTypical $133,432Pricier

Pricier than 39% of homes nearby

Lot size0.24 ac
SmallerTypical 0.31 acBigger

Bigger than 36% of homes nearby

Year built1915
OlderTypical 1959Newer

Newer than 15% of homes nearby

How 643 Prospect Ave ranks against every home in each area.
MeasureThis homeGrafton 58237Walsh County
Estimated valuepricier than$108,11839% of homes40% of homes
Lot sizebigger than0.24 ac36% of homes25% of homes
Year builtnewer than191515% of homes14% of homes

About 643 Prospect Ave

How much is 643 Prospect Ave, Grafton, ND worth?

The TopHap Estimate for 643 Prospect Ave, Grafton, ND is $108,118 as of Sep 24, 2026. The likely range is $70,848 to $145,388. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 643 Prospect Ave, Grafton, ND last sell?

643 Prospect Ave, Grafton, ND last sold on Jul 10, 2023, according to the county's recorded deed.

When was 643 Prospect Ave, Grafton, ND built?

643 Prospect Ave, Grafton, ND was built in 1915, making it 111 years old.

What schools serve 643 Prospect Ave, Grafton, ND?

643 Prospect Ave, Grafton, ND is assigned to Grafton High School (high), rated C-; Grafton Junior High School (middle), rated D-; Century Elementary School (elementary), rated D-. All sit in Grafton Public School District 18. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 643 Prospect Ave, Grafton, ND compare to other homes in Grafton 58237?

Among the 1,681 homes in Grafton 58237, it is worth more than 39% of them ($108,118 against a typical $133,432), its lot is bigger than 36% of them (0.24 ac against a typical 0.31 ac) and it is newer than 15% of them (1915 against a typical 1959). Measured against all of Walsh County, it is worth more than 40% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on Prospect Ave

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Assigned schools

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