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Single Family ResidenceResidential
$358,449$93 / 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 97How 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 $100,000 on Mar 16, 2015

21 NATIONAL AVE SW

GRAND RAPIDS, MI 49504
5
Baths
3,868 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1895
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$358K
$347K low$370K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$100,000 · Mar 16, 2015
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.$275,876
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$220,701
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.21%
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.$81,573
CLAIR BOSMA · recorded Mar 16, 2015
3rd 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.$1,000

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,643 (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.$244,600 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$210,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$489,200

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.44
53
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.
62
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
75
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.
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.51%
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.0.2 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 Residence
CountyKENT
Lot (acres)The size of the land the home sits on, from county records.0.18
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 117 ft²Porch · 33 ft²

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
Grand Rapids University Preparatory AcademyB-
Middle · Grades 6–12 · 1.1 mi
E
Shawmut Hills SchoolD+
Elementary · Grades PK–8 · 2.3 mi

District: Grand Rapids Public Schools

Neighborhood · ZIP 49504These 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.139
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.75
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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
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.41,462
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,686 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,371
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,253
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.Yes

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

21 National Ave Sw 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 85% of homes in John Ball Park
  • Among the lowest price per square foot in Grand Rapids 49504
  • Among the largest homes in John Ball Park
  • Has a bigger lot than 79% of homes in John Ball Park
  • Older than 96% of homes in Kent County

What homes are worth in Grand Rapids 49504

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

This home
$143K$549K

This home is worth more than 82% of homes in Grand Rapids 49504.

How it measures up in Grand Rapids 49504

The dot is this home. The mark in the middle is the typical home in Grand Rapids 49504.

Estimated value$358,449
CheaperTypical $276,392Pricier

Pricier than 82% of homes nearby

Price per ft²$93
CheaperTypical $203Pricier

Cheaper than almost all homes nearby

Living area3,868 ft²
SmallerTypical 1,384 ft²Bigger

Bigger than almost all homes nearby

Lot size0.18 ac
SmallerTypical 0.15 acBigger

Bigger than 61% of homes nearby

Year built1895
OlderTypical 1930Newer

Newer than 13% of homes nearby

How 21 National Ave Sw ranks against every home in each area.
MeasureThis homeJohn Ball ParkGrand Rapids 49504Kent County
Estimated valuepricier than$358,44985% of homes82% of homes54% of homes
Price per ft²pricier than$932% of homesalmost no homesalmost no homes
Living areabigger than3,868 ft²almost all homesalmost all homesalmost all homes
Lot sizebigger than0.18 ac79% of homes61% of homes31% of homes
Year builtnewer than189524% of homes13% of homes4% of homes

About 21 National Ave Sw

How much is 21 National Ave Sw, Grand Rapids, MI worth?

The TopHap Estimate for 21 National Ave Sw, Grand Rapids, MI is $358,449 as of Jul 14, 2026. The likely range is $346,931 to $369,967. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 National Ave Sw, Grand Rapids, MI last sell?

21 National Ave Sw, Grand Rapids, MI last sold on Mar 16, 2015 for $100,000, according to the county's recorded deed.

How big is 21 National Ave Sw, Grand Rapids, MI?

21 National Ave Sw, Grand Rapids, MI has 5 bathrooms, 3,868 square feet of living space and a 0.18-acre lot.

When was 21 National Ave Sw, Grand Rapids, MI built?

21 National Ave Sw, Grand Rapids, MI was built in 1895, making it 131 years old. The building has 1 story.

What schools serve 21 National Ave Sw, Grand Rapids, MI?

21 National Ave Sw, Grand Rapids, MI is assigned to Grand Rapids University Preparatory Academy (middle), rated B-; Shawmut Hills School (elementary), rated D+. All sit in Grand Rapids Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 National Ave Sw, Grand Rapids, MI compare to other homes in Grand Rapids 49504?

Among the 13,437 homes in Grand Rapids 49504, it is worth more than 82% of them ($358,449 against a typical $276,392), its price per square foot is higher than almost none of them ($93 against a typical $203), it is bigger than almost all of them (3,868 ft² against a typical 1,384 ft²), its lot is bigger than 61% of them (0.18 ac against a typical 0.15 ac) and it is newer than 13% of them (1895 against a typical 1930). Measured against all of Kent County, it is worth more than 54% 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 21 National Ave Sw, Grand Rapids, MI?

The 2025 property tax bill for 21 National Ave Sw, Grand Rapids, MI was $4,643. The county assessed it at $244,600.

More homes on National Ave Sw

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Assigned schools

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