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Residential (General/Single)Residential
$449,703$276 / 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 Sep 24, 2026
Last sold for $345,000 on Apr 5, 2019

21730 W MAC GREGOR DR

NEW BERLIN, WI 53146
4
Beds
2.5
Baths
1,629 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.
1959
Year BuiltThe year the home was originally built, according to county records.
1
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.

Valuation

$450K
$432K low$468K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$345,000 · Apr 5, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,296 (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.$417,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$101,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$315,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$471,100

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyWAUKESHA
Lot (acres)The size of the land the home sits on, from county records.0.51
RoofThe main material covering the roof, such as asphalt shingle or tile.Tile
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.DeckPorch · 15 ft²

Transaction History(3)

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
Ronald Reagan Elementary SchoolB
Elementary · Grades PK–6 · 3.3 mi
M
New Berlin West Middle/HighA
Middle · Grades 7–12 · 3.9 mi

District: New Berlin School District

Neighborhood · ZIP 53146These 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.64
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.79
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.28

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.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.8,342
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.462 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$101,156
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$129,175
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.35 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

21730 W Mac Gregor 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 66% of homes in New Berlin 53146
  • Costs more per square foot than 80% of homes in New Berlin 53146
  • Has a smaller lot than 80% of homes in New Berlin 53146
  • Older than 72% of homes in Waukesha County

What homes are worth in New Berlin 53146

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

This home
$233K$1.2M

This home is worth more than 66% of homes in New Berlin 53146.

How it measures up in New Berlin 53146

The dot is this home. The mark in the middle is the typical home in New Berlin 53146.

Estimated value$449,703
CheaperTypical $402,966Pricier

Pricier than 66% of homes nearby

Price per ft²$276
CheaperTypical $242Pricier

Pricier than 80% of homes nearby

Living area1,629 ft²
SmallerTypical 1,728 ft²Bigger

Bigger than 43% of homes nearby

Lot size0.51 ac
SmallerTypical 0.81 acBigger

Bigger than 20% of homes nearby

Year built1959
OlderTypical 1966Newer

Newer than 33% of homes nearby

How 21730 W Mac Gregor Dr ranks against every home in each area.
MeasureThis homeNew Berlin 53146Waukesha County
Estimated valuepricier than$449,70366% of homes44% of homes
Price per ft²pricier than$27680% of homes70% of homes
Living areabigger than1,629 ft²43% of homes40% of homes
Lot sizebigger than0.51 ac20% of homes51% of homes
Year builtnewer than195933% of homes28% of homes

About 21730 W Mac Gregor Dr

How much is 21730 W Mac Gregor Dr, New Berlin, WI worth?

The TopHap Estimate for 21730 W Mac Gregor Dr, New Berlin, WI is $449,703 as of Sep 24, 2026. The likely range is $431,612 to $467,794. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21730 W Mac Gregor Dr, New Berlin, WI last sell?

21730 W Mac Gregor Dr, New Berlin, WI last sold on Apr 5, 2019 for $345,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21730 W Mac Gregor Dr, New Berlin, WI?

21730 W Mac Gregor Dr, New Berlin, WI has 4 bedrooms, 2.5 bathrooms, 1,629 square feet of living space and a 0.51-acre lot.

When was 21730 W Mac Gregor Dr, New Berlin, WI built?

21730 W Mac Gregor Dr, New Berlin, WI was built in 1959, making it 67 years old. It is a ranch home. The building has 1 story.

What schools serve 21730 W Mac Gregor Dr, New Berlin, WI?

21730 W Mac Gregor Dr, New Berlin, WI is assigned to Ronald Reagan Elementary School (elementary), rated B; New Berlin West Middle/High (middle), rated A. All sit in New Berlin School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21730 W Mac Gregor Dr, New Berlin, WI compare to other homes in New Berlin 53146?

Among the 3,068 homes in New Berlin 53146, it is worth more than 66% of them ($449,703 against a typical $402,966), its price per square foot is higher than 80% of them ($276 against a typical $242), it is bigger than 43% of them (1,629 ft² against a typical 1,728 ft²), its lot is bigger than 20% of them (0.51 ac against a typical 0.81 ac) and it is newer than 33% of them (1959 against a typical 1966). Measured against all of Waukesha County, it is worth more than 44% 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 21730 W Mac Gregor Dr, New Berlin, WI?

The 2025 property tax bill for 21730 W Mac Gregor Dr, New Berlin, WI was $5,296. The county assessed it at $417,300.

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