Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$279,031$161 / 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 Jul 14, 2026
Last sold for $37,000 on Feb 28, 1996

645 UNION AVE SE

GRAND RAPIDS, MI 49503
1.5
Baths
1,730 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1905
Year BuiltThe year the home was originally built, according to county records.
2
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

$279K
$269K low$289K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$37,000 · Feb 28, 1996
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$132,031
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$105,625
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.47%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$106,000
AMERICA'S WHOLESALE LENDER · recorded Jun 9, 2004
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$41,000
COUNTRYWIDE BANK

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,916 (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.$177,700 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$155,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$355,400

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.33
1
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.
61
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
74
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
29
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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
CountyKENT
Lot (acres)The size of the land the home sits on, from county records.0.14
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
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 · 270 ft²

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Martin Luther King Leadership AcademyD+
Elementary · Grades PK–8 · 0.3 mi
H
Grand Rapids University Preparatory AcademyB-
High · Grades 6–12 · 0.7 mi

District: Grand Rapids Public Schools

Neighborhood · ZIP 49503These 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.149
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.20

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.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.23%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.40,149
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,306 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$59,548
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$76,334
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.46%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.No

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

645 Union Ave Se 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 more than 83% of homes in Southeast Community / SECA
  • Costs less per square foot than 90% of homes in Kent County
  • Bigger than 72% of homes in Grand Rapids 49503
  • Has a smaller lot than 77% of homes in Kent County
  • Older than 93% of homes in Kent County

What homes are worth in Grand Rapids 49503

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

This home
$125K$741K

This home is worth more than 48% of homes in Grand Rapids 49503.

How it measures up in Grand Rapids 49503

The dot is this home. The mark in the middle is the typical home in Grand Rapids 49503.

Estimated value$279,031
CheaperTypical $284,059Pricier

Pricier than 48% of homes nearby

Price per ft²$161
CheaperTypical $213Pricier

Pricier than 24% of homes nearby

Living area1,730 ft²
SmallerTypical 1,352 ft²Bigger

Bigger than 72% of homes nearby

Lot size0.14 ac
SmallerTypical 0.14 acBigger

Bigger than 52% of homes nearby

Year built1905
OlderTypical 1918Newer

Newer than 36% of homes nearby

How 645 Union Ave Se ranks against every home in each area.
MeasureThis homeSoutheast Community / SECAGrand Rapids 49503Kent County
Estimated valuepricier than$279,03183% of homes48% of homes29% of homes
Price per ft²pricier than$16174% of homes24% of homes10% of homes
Living areabigger than1,730 ft²67% of homes72% of homes68% of homes
Lot sizebigger than0.14 ac73% of homes52% of homes23% of homes
Year builtnewer than190543% of homes36% of homes7% of homes

About 645 Union Ave Se

How much is 645 Union Ave Se, Grand Rapids, MI worth?

The TopHap Estimate for 645 Union Ave Se, Grand Rapids, MI is $279,031 as of Jul 14, 2026. The likely range is $268,867 to $289,195. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 645 Union Ave Se, Grand Rapids, MI last sell?

645 Union Ave Se, Grand Rapids, MI last sold on Feb 28, 1996 for $37,000, according to the county's recorded deed.

How big is 645 Union Ave Se, Grand Rapids, MI?

645 Union Ave Se, Grand Rapids, MI has 1.5 bathrooms, 1,730 square feet of living space and a 0.14-acre lot.

When was 645 Union Ave Se, Grand Rapids, MI built?

645 Union Ave Se, Grand Rapids, MI was built in 1905, making it 121 years old. The building has 2 stories.

What schools serve 645 Union Ave Se, Grand Rapids, MI?

645 Union Ave Se, Grand Rapids, MI is assigned to Martin Luther King Leadership Academy (elementary), rated D+; Grand Rapids University Preparatory Academy (high), rated B-. All sit in Grand Rapids Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 645 Union Ave Se, Grand Rapids, MI compare to other homes in Grand Rapids 49503?

Among the 9,995 homes in Grand Rapids 49503, it is worth more than 48% of them ($279,031 against a typical $284,059), its price per square foot is higher than 24% of them ($161 against a typical $213), it is bigger than 72% of them (1,730 ft² against a typical 1,352 ft²), its lot is bigger than 52% of them (0.14 ac against a typical 0.14 ac) and it is newer than 36% of them (1905 against a typical 1918). Measured against all of Kent County, it is worth more than 29% 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 645 Union Ave Se, Grand Rapids, MI?

The 2025 property tax bill for 645 Union Ave Se, Grand Rapids, MI was $2,916. The county assessed it at $177,700.

Closest homes

More homes in Grand Rapids 49503

Assigned schools

Explore the area

See this home in context

Open 645 Union Ave Se on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map