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Single Family ResidenceResidential
$333,380$204 / 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 Jul 14, 2026
Last sold for $329,900 on Dec 5, 2025

22171 KNOLLWOOD DR

FLAT ROCK, MI 48134
3
Beds
2.5
Baths
1,636 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1993
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$333K
$312K low$355K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$329,900 · Dec 5, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,111 (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.$142,800 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$134,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$285,600

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Custom Design
CountyWAYNE
Lot (acres)The size of the land the home sits on, from county records.0.15
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 732 ft²Porch · 36 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.

E
Bates Elementary SchoolA-
Elementary · Grades KG–5 · 1.2 mi
H
Woodhaven High SchoolA-
High · Grades 10–12 · 1.5 mi
M
Brownstown Middle SchoolB+
Middle · Grades 6–7 · 1.7 mi

District: Woodhaven-Brownstown School District

Neighborhood · ZIP 48134These 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.69
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.29

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.21,097
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,174 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$87,393
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$98,467
Average tempThe average temperature here across a full year.50°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.53%

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

22171 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 83% of homes in Wayne County
  • Costs more per square foot than 92% of homes in Flat Rock 48134
  • Bigger than 72% of homes in Wayne County
  • Has a smaller lot than 91% of homes in Flat Rock 48134
  • Newer than 89% of homes in Wayne County

What homes are worth in Flat Rock 48134

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

This home
$75K$498K

This home is worth more than 76% of homes in Flat Rock 48134.

How it measures up in Flat Rock 48134

The dot is this home. The mark in the middle is the typical home in Flat Rock 48134.

Estimated value$333,380
CheaperTypical $259,932Pricier

Pricier than 76% of homes nearby

Price per ft²$204
CheaperTypical $148Pricier

Pricier than 92% of homes nearby

Living area1,636 ft²
SmallerTypical 1,728 ft²Bigger

Bigger than 44% of homes nearby

Lot size0.15 ac
SmallerTypical 0.22 acBigger

Bigger than 9% of homes nearby

Year built1993
OlderTypical 1997Newer

Newer than 43% of homes nearby

How 22171 Knollwood Dr ranks against every home in each area.
MeasureThis homeFlat Rock 48134Wayne County
Estimated valuepricier than$333,38076% of homes83% of homes
Price per ft²pricier than$20492% of homes83% of homes
Living areabigger than1,636 ft²44% of homes72% of homes
Lot sizebigger than0.15 ac9% of homes61% of homes
Year builtnewer than199343% of homes89% of homes

About 22171 Knollwood Dr

How much is 22171 Knollwood Dr, Flat Rock, MI worth?

The TopHap Estimate for 22171 Knollwood Dr, Flat Rock, MI is $333,380 as of Jul 14, 2026. The likely range is $311,932 to $354,828. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 22171 Knollwood Dr, Flat Rock, MI last sell?

22171 Knollwood Dr, Flat Rock, MI last sold on Dec 5, 2025 for $329,900, according to the county's recorded deed.

How big is 22171 Knollwood Dr, Flat Rock, MI?

22171 Knollwood Dr, Flat Rock, MI has 3 bedrooms, 2.5 bathrooms, 1,636 square feet of living space and a 0.15-acre lot.

When was 22171 Knollwood Dr, Flat Rock, MI built?

22171 Knollwood Dr, Flat Rock, MI was built in 1993, making it 33 years old. It is a custom design home. The building has 2 stories.

What schools serve 22171 Knollwood Dr, Flat Rock, MI?

22171 Knollwood Dr, Flat Rock, MI is assigned to Bates Elementary School (elementary), rated A-; Woodhaven High School (high), rated A-; Brownstown Middle School (middle), rated B+. All sit in Woodhaven-Brownstown School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 22171 Knollwood Dr, Flat Rock, MI compare to other homes in Flat Rock 48134?

Among the 7,043 homes in Flat Rock 48134, it is worth more than 76% of them ($333,380 against a typical $259,932), its price per square foot is higher than 92% of them ($204 against a typical $148), it is bigger than 44% of them (1,636 ft² against a typical 1,728 ft²), its lot is bigger than 9% of them (0.15 ac against a typical 0.22 ac) and it is newer than 43% of them (1993 against a typical 1997). Measured against all of Wayne County, it is worth more than 83% 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 22171 Knollwood Dr, Flat Rock, MI?

The 2025 property tax bill for 22171 Knollwood Dr, Flat Rock, MI was $2,111. The county assessed it at $142,800.

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