18045 W Observatory 1ty71j5k1sty, New Berlin, WI 53146

Listed by Peter Promersberger • Ogden & Company, Inc. Bought with Century 21 Affiliated-Wauwatosa.

Off Market Apr 2007 for $214K

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Est. refi paymentEst. refi $1,515/mo

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— ba

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sq ft

18045 W Observatory 1ty71j5k1sty, New Berlin, WI 53146

About this home

Single-familyProperty Type

1 garage spacesParking

Listed by Peter Promersberger • Ogden & Company, Inc.

Bought with Michelle Genaw • Century 21 Affiliated-Wauwatosa

Redfin checked: 2 minutes ago

•Source:METROMLS #848038

Redfin Estimate

Unfortunately, we don't have enough data to generate an accurate Estimate at this time.

Earn from this home

Rent

$1,608/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 18045 W Observatory 1ty71j5k1sty

Year

Property tax

Land + Additions

Assessment*

2025

$3,460 (+6.5%)

$95,300 + $181,200

$276,500

2024

$3,249 (+7.9%)

$95,300 + $181,200

$276,500

2023

$3,011 (−2.6%)

$67,500 + $132,600

$200,100

2022

$3,092 (+5.9%)

$67,500 + $132,600

$200,100

2021

$2,920 (−1.1%)

$67,500 + $132,600

$200,100

2020

$2,953 (−3.0%)

$67,500 + $132,600

$200,100

2019

$3,044 (−1.6%)

$67,500 + $132,600

$200,100

2018

$3,095 (−4.5%)

$67,500 + $132,600

$200,100

2017

$3,241 (−0.5%)

$59,400 + $128,700

$188,100

2016

$3,258 (+1.5%)

$59,400 + $128,700

$188,100

2014

$3,211

$55,700 + $120,700

$176,400

Tax history for 18045 W Observatory 1ty71j5k1sty

Year

Property tax

Land + Additions

Assessment*

2025

$3,460 (+6.5%)

$95,300 + $181,200

$276,500

2024

$3,249 (+7.9%)

$95,300 + $181,200

$276,500

2023

$3,011 (−2.6%)

$67,500 + $132,600

$200,100

2022

$3,092 (+5.9%)

$67,500 + $132,600

$200,100

2021

$2,920 (−1.1%)

$67,500 + $132,600

$200,100

2020

$2,953 (−3.0%)

$67,500 + $132,600

$200,100

2019

$3,044 (−1.6%)

$67,500 + $132,600

$200,100

2018

$3,095 (−4.5%)

$67,500 + $132,600

$200,100

2017

$3,241 (−0.5%)

$59,400 + $128,700

$188,100

2016

$3,258 (+1.5%)

$59,400 + $128,700

$188,100

2014

$3,211

$55,700 + $120,700

$176,400

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

Public record

Public record
Zoning

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

5.39 Acres

Year renovated

1960

Sq. Ft.

786

Year built

1900

Style

Single Family Residential

County

Waukesha County

APN

NBC 1234993

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jun 15, 2026.

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

Parking

Parking Information
Parking: 1 Space

Garage Information
# of Garage Parking Spaces (Total): 2.5
Garage: Opener Included, Detached, 2 Car

Interior

Bedroom Information
Master Bedroom Dimensions: 11 x 9
Bedroom 2 Dimensions: 8 x 7

Bathroom Information
Bath Description(s): Full Bath on Main Level, Shower Over Tub, Vanity

Interior Features
Laundry Facility, Living Room, Other Room, 220 Volts, Bay Window, Cable/Satellite Available, Circuit Breakers, Gas Appliance Hookup, Skylight(s), Smoke Detector(s), Cathedral/Vaulted Ceiling, Walk-In Closet(s)

Room Information
Block, Full
Living Room Dimensions: 14 x 11
Kitchen Dimensions: 13 x 8
Dining Room Dimensions: 13 x 10
Den/Office Dimension: 13 x 9

Equipment
Appliances: Dryer, Range/Oven, Range, Refrigerator, Washer

Exterior

Building Information
Building Type: 1 Story
Roofing: Composition/Fiberglass
Estimated Sq. Ft. Range: Not Available

Exterior
Exterior Features: Deck, Patio
Exterior: Wood

Property Information
Single-Family

Property Features
Water Features: Creek

Lot Information
Outbuildings: Garden Shed
Lot Description: Hobby Farm, Wooded
Zoning: RES

Financial

Tax Information
Total Taxes: $2,995.46
Tax Year: 2005

Utilities

Utility Information
Well, Private Septic System
Heating/Cooling: Central Air, Forced Air
Natural Gas

Location

Neighborhood Information
Municipality: NEW BERLIN
Municipality Type: City

School Information
School District: New Berlin

Public facts

Beds: 2
Baths: 1.0
Sq. Ft.: 786
Stories: 1.0
Lot Size: 5.39 acres
Style: Single Family Residential
Year Built: 1900
Year Renovated: 1960
County: Waukesha County
APN: NBC 1234993

Home facts updated by county records on Jun 15, 2026

Around this home

Schools

Ronald Reagan Elementary School

Public PreK-6 • Assigned • 0.4mi

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

1/10 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

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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 18045 W Observatory 1ty71j5k1sty

Data from public records.

Address	Redfin Estimate
18405 W Observatory Road, New Berlin, WI 3 Beds \| 2 Baths \| 1406 Sq. Ft.	$651,847
17910 W Observatory Road, New Berlin, WI 6 Beds \| 1 Baths \| 2259 Sq. Ft.	$374,799

Address	Redfin Estimate
18200 W Observatory Road, New Berlin, WI 4 Beds \| 3.5 Baths \| 3315 Sq. Ft.	$1,015,785
17624 W Observatory Road, New Berlin, WI 3 Beds \| 1 Baths \| 1080 Sq. Ft.	$337,163

Address	Redfin Estimate
18420 W Observatory Road, New Berlin, WI 4 Beds \| 2.5 Baths \| 2719 Sq. Ft.	$702,416
18120 W Observatory Road, New Berlin, WI 3 Beds \| 2.5 Baths \| 2302 Sq. Ft.	$980,099

Property information provided by METROMLS when last listed in 2006. This data may not match . Learn more.

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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 18045 W Observatory 1ty71j5k1sty

Tax history for 18045 W Observatory 1ty71j5k1sty

Public record

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 18045 W Observatory 1ty71j5k1sty

More real estate resources