Skip to content
Skip to content
TopHapOpen in map
Residential (General/Single)Residential
$356,126$212 / 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 91How 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 $231,200 on Oct 10, 2017

4220 S MARY ROSS DR

NEW BERLIN, WI 53151
3
Beds
2.5
Baths
1,682 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.
0.52 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.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$356K
$325K low$387K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$231,200 · Oct 10, 2017
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.$85,126
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$68,101
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.66%
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.$271,000
MORTGAGE CENTER LLC · 5.38% 2 · recorded Apr 14, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,312 (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.$337,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$74,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$263,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$381,300

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.Split Level
CountyWAUKESHA
Lot (acres)The size of the land the home sits on, from county records.0.52
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
Ronald Reagan Elementary SchoolB
Elementary · Grades PK–6 · 0.6 mi
M
Eisenhower Middle/HighA+
Middle · Grades 7–12 · 1.4 mi

District: New Berlin School District

Neighborhood · ZIP 53151These 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.78
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.76
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.30

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.3.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.33,202
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,856 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$98,242
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$127,485
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.34 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
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

4220 S Mary Ross 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 less than 79% of homes in Waukesha County
  • Costs less per square foot than 73% of homes in Waukesha County
  • Older than 77% of homes in New Berlin 53151

What homes are worth in New Berlin 53151

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

This home
$205K$824K

This home is worth more than 31% of homes in New Berlin 53151.

How it measures up in New Berlin 53151

The dot is this home. The mark in the middle is the typical home in New Berlin 53151.

Estimated value$356,126
CheaperTypical $398,426Pricier

Pricier than 31% of homes nearby

Price per ft²$212
CheaperTypical $230Pricier

Pricier than 32% of homes nearby

Living area1,682 ft²
SmallerTypical 1,756 ft²Bigger

Bigger than 45% of homes nearby

Lot size0.52 ac
SmallerTypical 0.47 acBigger

Bigger than 58% of homes nearby

Year built1959
OlderTypical 1977Newer

Newer than 23% of homes nearby

How 4220 S Mary Ross Dr ranks against every home in each area.
MeasureThis homeNew Berlin 53151Waukesha County
Estimated valuepricier than$356,12631% of homes21% of homes
Price per ft²pricier than$21232% of homes27% of homes
Living areabigger than1,682 ft²45% of homes43% of homes
Lot sizebigger than0.52 ac58% of homes51% of homes
Year builtnewer than195923% of homes28% of homes

About 4220 S Mary Ross Dr

How much is 4220 S Mary Ross Dr, New Berlin, WI worth?

The TopHap Estimate for 4220 S Mary Ross Dr, New Berlin, WI is $356,126 as of Jul 14, 2026. The likely range is $324,832 to $387,420. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4220 S Mary Ross Dr, New Berlin, WI last sell?

4220 S Mary Ross Dr, New Berlin, WI last sold on Oct 10, 2017 for $231,200, according to the county's recorded deed.

How big is 4220 S Mary Ross Dr, New Berlin, WI?

4220 S Mary Ross Dr, New Berlin, WI has 3 bedrooms, 2.5 bathrooms, 1,682 square feet of living space and a 0.52-acre lot.

When was 4220 S Mary Ross Dr, New Berlin, WI built?

4220 S Mary Ross Dr, New Berlin, WI was built in 1959, making it 67 years old. It is a split level home.

What schools serve 4220 S Mary Ross Dr, New Berlin, WI?

4220 S Mary Ross Dr, New Berlin, WI is assigned to Ronald Reagan Elementary School (elementary), rated B; Eisenhower 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 4220 S Mary Ross Dr, New Berlin, WI compare to other homes in New Berlin 53151?

Among the 11,204 homes in New Berlin 53151, it is worth more than 31% of them ($356,126 against a typical $398,426), its price per square foot is higher than 32% of them ($212 against a typical $230), it is bigger than 45% of them (1,682 ft² against a typical 1,756 ft²), its lot is bigger than 58% of them (0.52 ac against a typical 0.47 ac) and it is newer than 23% of them (1959 against a typical 1977). Measured against all of Waukesha County, it is worth more than 21% 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 4220 S Mary Ross Dr, New Berlin, WI?

The 2025 property tax bill for 4220 S Mary Ross Dr, New Berlin, WI was $4,312. The county assessed it at $337,800.

More homes on S Mary Ross Dr

Closest homes

More homes in New Berlin 53151

Assigned schools

Explore the area

See this home in context

Open 4220 S Mary Ross Dr 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