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Single Family ResidenceResidential
$277,306$151 / 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 Oct 21, 2026
Last sold for $200,000 on Jul 29, 2020

4233 KNOLLWOOD DR

GRAND BLANC, MI 48439
4
Beds
2.5
Baths
1,839 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.
0.51 ac
Lot SizeThe size of the land the home sits on, from county records.
1964
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$277K
$261K low$293K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$200,000 · Jul 29, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,461 (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.$124,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$40,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$83,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$113,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$248,000

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.25
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
12
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
54
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
58
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
2
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
CountyGENESEE
Lot (acres)The size of the land the home sits on, from county records.0.51
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.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
Cook Elementary School
Elementary · Grades KG–2 · 0.4 mi
H
Grand Blanc Community High SchoolB-
High · Grades 8–12 · 1.0 mi
M
Grand Blanc Middle School EastA
Middle · Grades 4–8 · 2.4 mi

District: Grand Blanc Community Schools

Neighborhood · ZIP 48439These 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.48
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.23

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.49,271
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.927 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$90,517
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,066
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.32 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

Owner Tools

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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

4233 Knollwood Dr 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 75% of homes in Genesee County
  • Costs less per square foot than 73% of homes in Grand Blanc 48439
  • Bigger than 78% of homes in Genesee County
  • Has a bigger lot than 68% of homes in Grand Blanc 48439
  • Older than 78% of homes in Grand Blanc 48439

What homes are worth in Grand Blanc 48439

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

This home
$145K$702K

This home is worth more than 45% of homes in Grand Blanc 48439.

How it measures up in Grand Blanc 48439

The dot is this home. The mark in the middle is the typical home in Grand Blanc 48439.

Estimated value$277,306
CheaperTypical $291,846Pricier

Pricier than 45% of homes nearby

Price per ft²$151
CheaperTypical $170Pricier

Pricier than 27% of homes nearby

Living area1,839 ft²
SmallerTypical 1,766 ft²Bigger

Bigger than 55% of homes nearby

Lot size0.51 ac
SmallerTypical 0.4 acBigger

Bigger than 68% of homes nearby

Year built1964
OlderTypical 1986Newer

Newer than 22% of homes nearby

How 4233 Knollwood Dr ranks against every home in each area.
MeasureThis homeGrand Blanc 48439Genesee County
Estimated valuepricier than$277,30645% of homes75% of homes
Price per ft²pricier than$15127% of homes57% of homes
Living areabigger than1,839 ft²55% of homes78% of homes
Lot sizebigger than0.51 ac68% of homes67% of homes
Year builtnewer than196422% of homes51% of homes

About 4233 Knollwood Dr

How much is 4233 Knollwood Dr, Grand Blanc, MI worth?

The TopHap Estimate for 4233 Knollwood Dr, Grand Blanc, MI is $277,306 as of Oct 21, 2026. The likely range is $261,322 to $293,290. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4233 Knollwood Dr, Grand Blanc, MI last sell?

4233 Knollwood Dr, Grand Blanc, MI last sold on Jul 29, 2020 for $200,000, according to the county's recorded deed.

How big is 4233 Knollwood Dr, Grand Blanc, MI?

4233 Knollwood Dr, Grand Blanc, MI has 4 bedrooms, 2.5 bathrooms, 1,839 square feet of living space and a 0.51-acre lot.

When was 4233 Knollwood Dr, Grand Blanc, MI built?

4233 Knollwood Dr, Grand Blanc, MI was built in 1964, making it 62 years old. The building has 2 stories.

What schools serve 4233 Knollwood Dr, Grand Blanc, MI?

4233 Knollwood Dr, Grand Blanc, MI is assigned to Cook Elementary School (elementary); Grand Blanc Community High School (high), rated B-; Grand Blanc Middle School East (middle), rated A. All sit in Grand Blanc Community Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4233 Knollwood Dr, Grand Blanc, MI compare to other homes in Grand Blanc 48439?

Among the 17,483 homes in Grand Blanc 48439, it is worth more than 45% of them ($277,306 against a typical $291,846), its price per square foot is higher than 27% of them ($151 against a typical $170), it is bigger than 55% of them (1,839 ft² against a typical 1,766 ft²), its lot is bigger than 68% of them (0.51 ac against a typical 0.4 ac) and it is newer than 22% of them (1964 against a typical 1986). Measured against all of Genesee County, it is worth more than 75% 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 4233 Knollwood Dr, Grand Blanc, MI?

The 2025 property tax bill for 4233 Knollwood Dr, Grand Blanc, MI was $4,461. The county assessed it at $124,000.

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