Google street view image for 18625 W Observatory Rd, New Berlin, WI 53146

OFF MARKET

$543,079

•

2 ba

•

1,772

sq ft

18625 W Observatory Rd, New Berlin, WI 53146

About this home

18625 W Observatory Rd is a 1,772 square foot house on a 3.48 acre lot with 3 bedrooms and 2 bathrooms. Based on Redfin's New Berlin data, we estimate the home's value is $543,079.

Single-familyProperty Type

1974Year Built

3.48 acresLot Size

$306Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$543,079

$1,000 since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 6.5% higher than the average sale price ($510K) of 6 comparable homes.

SOLD JUN 18, 2026
$607,500
A
3 beds2 baths1,939 sq ft
17000 W Observatory Rd, New Berlin, WI 53151
SOLD AUG 18, 2026
$570,000
B
3 beds2 baths2,070 sq ft
4450 S Hearthside Dr, New Berlin, WI 53151
SOLD JUL 17, 2026
$426,500
C
3 beds2 baths2,044 sq ft
4585 S Harland Dr, New Berlin, WI 53151
SOLD AUG 5, 2026
$480,000
D
3 beds1.5 baths1,736 sq ft
18260 W Willow Rd, New Berlin, WI 53146
SOLD AUG 14, 2026
$485,000
E
3 beds2 baths1,904 sq ft
15449 W Mayflower Dr, New Berlin, WI 53151
SOLD JUL 15, 2026
$490,000
F
3 beds2 baths1,800 sq ft
5235 S Oak Ridge Dr, New Berlin, WI 53146

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Earn from this home

Sell

$509,822

Est. take-home

List your home with Redfin and save $5,431

Rent

$2,712/mo

Redfin rental estimate

List your home for rent

Market trends in 53146, WI

Last updated July 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

102.4%

+0.7% MoM

Median sale price

$426K

$26K MoM

Avg. days on market

39d

1 days MoM

Recently sold homes

6 MoM

New listings for sale

$269,500
2 beds2 baths1,514 sq ft
17835 W Radam Dr #17835, New Berlin, WI 53146
Hoffmann Team* • RE/MAX Lakeside-Central
$1,495,000
4 beds3.5 baths4,434 sq ft
2850 S Amor Dr, New Berlin, WI 53146
Lisa Reinecke • RE/MAX Lakeside-West
See all

Provided by Redfin

Sale history for 18625 W Observatory Rd

As the MLS and public records start to fill up, we'll list the details here.

Year

Property tax

Land + Additions

Assessment*

2025

$5,536 (+6.4%)

$108,200 + $341,700

$449,900

2024

$5,203 (+15.3%)

$108,200 + $341,700

$449,900

2023

$4,514 (−3.0%)

$67,155 + $237,400

$304,555

2022

$4,654 (+5.8%)

$67,155 + $237,400

$304,555

2021

$4,400 (−1.3%)

$67,155 + $237,400

$304,555

2020

$4,457 (−2.7%)

$67,155 + $237,400

$304,555

2019

$4,582 (−1.6%)

$67,200 + $237,400

$304,600

2018

$4,656 (−3.2%)

$67,200 + $237,400

$304,600

2017

$4,810 (−1.0%)

$61,000 + $222,700

$283,700

2016

$4,858

$61,000 + $222,700

$283,700

2014

$4,856 (−1.4%)

$59,700 + $209,000

$268,700

2013

$4,927

$59,700 + $209,000

$268,700

Tax history for 18625 W Observatory Rd

Year

Property tax

Land + Additions

Assessment*

2025

$5,536 (+6.4%)

$108,200 + $341,700

$449,900

2024

$5,203 (+15.3%)

$108,200 + $341,700

$449,900

2023

$4,514 (−3.0%)

$67,155 + $237,400

$304,555

2022

$4,654 (+5.8%)

$67,155 + $237,400

$304,555

2021

$4,400 (−1.3%)

$67,155 + $237,400

$304,555

2020

$4,457 (−2.7%)

$67,155 + $237,400

$304,555

2019

$4,582 (−1.6%)

$67,200 + $237,400

$304,600

2018

$4,656 (−3.2%)

$67,200 + $237,400

$304,600

2017

$4,810 (−1.0%)

$61,000 + $222,700

$283,700

2016

$4,858

$61,000 + $222,700

$283,700

2014

$4,856 (−1.4%)

$59,700 + $209,000

$268,700

2013

$4,927

$59,700 + $209,000

$268,700

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Zoning

C-1

Upland Resource Conservancy District

The C-1 Conservancy District is intended to prevent the destruction of valuable natural and man-made resources and, in particular, woodlands, wetlands, wildlife habitat areas, perennial and intermittent streams, major lakes, floodlands and shorelands, significant water recharge and discharge areas, prairies, recreational and scenic areas, natural scientific areas, areas with poor soils or high groundwater, and areas of steep slopes, including primary environmental corridor, secondary environmental corridor and isolated natural resource areas. Regulation of these areas, including environmental corridors, should serve to control erosion and sedimentation and to protect the natural resource base and promote and maintain the natural beauty of the area as well as the health, safety, and welfare of City residents.

Permitted uses

Include but are not limited to:

Agriculture
Housing-Single unit
Infrastructure
Agriculture-Cropland
Park & open space
Wilderness

Property details

Interior

Basement Information
Basement Sq. Ft: 1,772
Basement Type: Full

Bathroom Information
# of Full Baths: 1
# of 1/2 Baths: 2

Heating & Cooling
Heating Fuel Type: Gas
Heating Type: Forced Air

Fireplace Information
# of Fireplaces: 2
Has Fireplace

Room Information
# of Rooms: 6

Exterior

Exterior Information
Floor Construction Type: Plywood
Foundation Type: Continuous Footing
Building Style Type: Ranch
Exterior Wall: Frame
Roof Covering Type: Clay Tile
Roof Shape Type: Clay Tile
Building Improvement Type: Single Family

Property Information
Living Sq. Ft: 1,772
Ground Floor Sq. Ft: 1,772
Building Sq. Ft: 4,250
# of Stories: 1
Legal Description: PT OF LOT C OF CSM V12/165 COM AT A PT ON S LI 107.55 FT W OF SE COR OF SD LOT,TH S 89 DGR 19'20" W 192.45 FT,TH N 0 DGR 40'40" W 567.35 FT,TH N 40 DGR 24'57" W 139.02 FT TO S LI RD,TH N 49 DGR 35'3" E 110.31 FT,TH S 40 DGR 24'57" E 15.25 FT,TH 109.29 FT N 58 DGR 2'12" E ALG ARC,TH S 23 DGR 30'38" E 241.20 FT,TH S 0 DGR 40'40" E 567.35 FT TO BGN DOC #3944315 08/23/2012 EASE DOC #4278524 REC 05/22/2017

Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 706
Garage / Carport Type: Attached

Lot Information
# of Buildings: 1
Land Sq. Ft: 151,589
Legal Lot Number: C
Municipality Name: NEW BERLIN CITY
Acres: 3.48
Zoning Code: R2
State Use Description: RESIDENTIAL

Utility Information
Sewer Type: Septic
Water Service Type: Well
Utility Type: Gas Public

Financial

Assessor Information
Assessment Year: 2025
Tax District County: NEW BERLIN CITY

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 1,772
Stories: 1.0
Lot Size: 3.48 acres
Style: Single Family Residential
Year Built: 1974
Year Renovated: 1985
County: Waukesha County
APN: NBC 1234998003

Home facts updated by county records on Jun 15, 2026

Around this home

Schools

Ronald Reagan Elementary School

Public PreK-6 • Assigned • 0.7mi

6/10

New Berlin Middle/High School

Public 7-12 • Assigned • 1.4mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

3/10 Fire Factor

0.31% chance of being in a wildfire in next 30 years

2/10 Heat Factor

7 days above 100° expected this year, 13 days in 30 years

2/10 Wind Factor

Minor risk of severe winds over next 30 years

2/10 Air Factor

1 unhealthy days expected this year, 1 days in 30 years

Provided by First Street

Historical weather

New Berlin, WI • 53146

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 10 hours in June and 3.4 hours in December, placing it below the U.S. average for solar exposure.

10 hrs

3.4 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$516,000 – $625,000

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Jennifer Durand • Bielinski Homes, Inc.

3D WALKTHROUGH

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Karla Maldonado • Smart Asset Realty Inc

New listings for sale in 53146

$269,500

2 beds2 baths1,514 sq ft

17835 W Radam Dr #17835, New Berlin, WI 53146

Hoffmann Team* • RE/MAX Lakeside-Central

$1,495,000

4 beds3.5 baths4,434 sq ft

2850 S Amor Dr, New Berlin, WI 53146

Lisa Reinecke • RE/MAX Lakeside-West

Home values near 18625 W Observatory Rd

Data from public records.

Address	Redfin Estimate
18725 West Observatory Rd, New Berlin, WI 3 Beds \| 2 Baths \| 1680 Sq. Ft.	$521,192
18775 West Observatory Rd, New Berlin, WI 3 Beds \| 1.5 Baths \| 2712 Sq. Ft.	$532,270

Address	Redfin Estimate
18405 West Observatory Rd, New Berlin, WI 3 Beds \| 2 Baths \| 1406 Sq. Ft.	$651,847
18200 West Observatory Rd, New Berlin, WI 4 Beds \| 3.5 Baths \| 3315 Sq. Ft.	$1,015,785

Address	Redfin Estimate
18760 West Observatory Rd, New Berlin, WI 3 Beds \| 2 Baths \| 1920 Sq. Ft.	$497,974
18590 West Observatory Rd, New Berlin, WI 3 Beds \| 2.5 Baths \| 2650 Sq. Ft.	$742,501

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 53146, WI

Sale history for 18625 W Observatory Rd

Tax history for 18625 W Observatory Rd

Zoning

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 53146

Home values near 18625 W Observatory Rd

More real estate resources