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Single Family ResidenceResidential
$120,083$150 / 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 87How 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

640 MASON ST

MASON, MI 48854
2
Beds
1
Baths
800 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.
0.64 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$120K
$105K low$136K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$915 (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.$51,990 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$27,480
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$24,510
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$50,380
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$103,980

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyINGHAM
Lot (acres)The size of the land the home sits on, from county records.0.64
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.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.Porch · 24 ft²

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
Mason High SchoolB-
High · Grades 9–12 · 1.4 mi
M
Mason Middle SchoolB
Middle · Grades 6–8 · 1.4 mi
E
Alaiedon Elementary SchoolB-
Elementary · Grades PK–5 · 3.2 mi

District: Mason Public Schools

Neighborhood · ZIP 48854These 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.59
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.25

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.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.22,123
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.198 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$87,329
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,956
Average tempThe average temperature here across a full year.48°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.51%

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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 Mason 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 92% of homes in Mason 48854
  • Costs less per square foot than 77% of homes in Mason 48854
  • Smaller than 98% of homes in Mason 48854
  • Has a bigger lot than 78% of homes in Ingham County
  • Older than 81% of homes in Mason 48854

What homes are worth in Mason 48854

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

This home
$45K$614K

This home is worth more than 8% of homes in Mason 48854.

How it measures up in Mason 48854

The dot is this home. The mark in the middle is the typical home in Mason 48854.

Estimated value$120,083
CheaperTypical $268,357Pricier

Pricier than 8% of homes nearby

Price per ft²$150
CheaperTypical $179Pricier

Pricier than 23% of homes nearby

Living area800 ft²
SmallerTypical 1,580 ft²Bigger

Bigger than 2% of homes nearby

Lot size0.64 ac
SmallerTypical 1 acBigger

Bigger than 41% of homes nearby

Year built1940
OlderTypical 1977Newer

Newer than 19% of homes nearby

How 640 Mason St ranks against every home in each area.
MeasureThis homeMason 48854Ingham County
Estimated valuepricier than$120,0838% of homes21% of homes
Price per ft²pricier than$15023% of homes45% of homes
Living areabigger than800 ft²2% of homes8% of homes
Lot sizebigger than0.64 ac41% of homes78% of homes
Year builtnewer than194019% of homes27% of homes

About 640 Mason St

How much is 640 Mason St, Mason, MI worth?

The TopHap Estimate for 640 Mason St, Mason, MI is $120,083 as of Aug 30, 2026. The likely range is $104,579 to $135,587. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 Mason St, Mason, MI last sell?

640 Mason St, Mason, MI last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 640 Mason St, Mason, MI?

640 Mason St, Mason, MI has 2 bedrooms, 1 bathrooms, 800 square feet of living space and a 0.64-acre lot.

When was 640 Mason St, Mason, MI built?

640 Mason St, Mason, MI was built in 1940, making it 86 years old. The building has 1 story.

What schools serve 640 Mason St, Mason, MI?

640 Mason St, Mason, MI is assigned to Mason High School (high), rated B-; Mason Middle School (middle), rated B; Alaiedon Elementary School (elementary), rated B-. All sit in Mason Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 640 Mason St, Mason, MI compare to other homes in Mason 48854?

Among the 7,232 homes in Mason 48854, it is worth more than 8% of them ($120,083 against a typical $268,357), its price per square foot is higher than 23% of them ($150 against a typical $179), it is bigger than 2% of them (800 ft² against a typical 1,580 ft²), its lot is bigger than 41% of them (0.64 ac against a typical 1 ac) and it is newer than 19% of them (1940 against a typical 1977). Measured against all of Ingham County, it is worth more than 21% 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 Mason St, Mason, MI?

The 2025 property tax bill for 640 Mason St, Mason, MI was $915. The county assessed it at $51,990.

More homes on Mason St

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