W Observatory Rd, New Berlin, WI Property Records

Waukesha County property records for 76 addresses on W Observatory Rd, New Berlin, WI · Last verified October 2026

W Observatory Rd Highlights

Properties 76
Median Sale Price $490,000
Deeds and Mortgages on File 105
Median Price per Sqft $267
Owner Occupied 84%
Median Annual Tax Bill $5,033
Median Year Built 1973
Median Ownership Tenure 9 years

Properties on W Observatory Rd

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

16700 W Observatory Rd

2 bd · 2.5 ba · 1,732 sqft · built 1996 · 0.476 acres

Last Sale Tax Bill Prior Sale Owner Records
$240,000Jul 2006 $4,2452025 Amount on Record Apr 1998 Owner on Record Owner Occupied AssessorUpdated Oct 2026

16702 W Observatory Rd

2 bd · 2.5 ba · 1,700 sqft · built 1996 · 0.476 acres

Last Sale Tax Bill Prior Sale Owner Records
$425,000Nov 2024 $3,9002025 Amount on Record Feb 2012 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

16705 W Observatory Rd

7 bd · 5.5 ba · 5,017 sqft · built 1998 · 0.539 acres

Last Sale Tax Bill Prior Sale Owner Records
$436,000Oct 2023 $5,9382025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
$4,9222025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

16720 W Observatory Rd

3 bd · 2.5 ba · 1,736 sqft · built 1995

Last Sale Tax Bill Prior Sale Owner Records
$213,000Aug 2012 $4,3142025 Amount on Record Feb 1997 2 Owners on Record AssessorUpdated Jul 2026

16722 W Observatory Rd

4 bd · 3.5 ba · 3,376 sqft · built 1995 · 0.589 acres

Last Sale Tax Bill Prior Sale Owner Records
$355,000Aug 2017 $5,4942025 Amount on Record Mar 2014 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

16725 W Observatory Rd

3 bd · 2 ba · 1,685 sqft · built 1997 · 1.68 acres

Last Sale Tax Bill Prior Sale Owner Records
$165,000Oct 1998 $3,7162025 Amount on Record Jul 1997 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

16727 W Observatory Rd

3 bd · 2 ba · 1,685 sqft · built 1997 · 0.872 acres

Last Sale Tax Bill Prior Sale Owner Records
$450,000Oct 2025 $4,1492025 Amount on Record Mar 2020 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

16805 W Observatory Rd

2 bd · 2 ba · 3,120 sqft · built 1960 · 0.439 acres

Last Sale Tax Bill Prior Sale Owner Records
$270,000Dec 2009 $4,9502025 Amount on Record Oct 2008 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2026

16825 W Observatory Rd

2,506 sqft · built 2003 · 0.539 acres

Last Sale Tax Bill Prior Sale Owner Records
$510,000May 2025 $5,6122025 Amount on Record Nov 2002 Owner on Record Assessor + 1 DocumentUpdated Oct 2026

16855 W Observatory Rd

6,920 sqft · built 1978 · 1.06 acres

Last Sale Tax Bill Prior Sale Owner Records
$520,000Sep 2023 $6,3322025 Amount on Record Jun 2003 Owner on Record Assessor + 2 DocumentsUpdated Jul 2026

16885 W Observatory Rd

1 bd · 1 ba · 3,600 sqft · built 1977 · 0.68 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,0092025 —Mar 2000 Owner on Record AssessorUpdated Jul 2026

16914 W Observatory Rd

2 bd · 2 ba · 2,592 sqft · built 1954 · 4.53 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,7142025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

16915 W Observatory Rd

5 bd · 2 ba · 1,703 sqft · built 1949 · 0.65 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,1712025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

16975 W Observatory Rd

3 bd · 2.5 ba · 1,720 sqft · built 1957 · 2.28 acres

Last Sale Tax Bill Prior Sale Owner Records
$270,000Jun 2017 $5,1272025 Amount on Record Sep 2003 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

17000 W Observatory Rd

3 bd · 2 ba · 1,623 sqft · built 1958 · 2.51 acres

Last Sale Tax Bill Prior Sale Owner Records
$607,500Jun 2026 $4,6952025 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

17001 W Observatory Rd

3 bd · 2 ba · 1,890 sqft · built 1949 · 2.26 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,1072025 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

17020 W Observatory Rd

4 bd · 1.5 ba · 1,561 sqft · built 1941 · 2.51 acres

Last Sale Tax Bill Prior Sale Owner Records
$172,000Aug 2013 $4,6612025 —Jan 1997 Owner on Record Owner Occupied AssessorUpdated Sep 2026

17085 W Observatory Rd

5 bd · 1.5 ba · 2,172 sqft · built 1949 · 2.26 acres

Last Sale Tax Bill Prior Sale Owner Records
$273,500Aug 2018 $6,2622025 Amount on Record Jul 1998 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

17090 W Observatory Rd

4 bd · 2 ba · 2,246 sqft · built 1950 · 2.51 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,8902025 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

17135 W Observatory Rd

3 bd · 2.5 ba · 2,088 sqft · built 1953 · 1.81 acres

Last Sale Tax Bill Prior Sale Owner Records
$189,000Jan 2011 $5,2632025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

17150 W Observatory Rd

3 bd · 1 ba · 1,310 sqft · built 1947 · 1.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,2452025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

17200 W Observatory Rd

3 bd · 1 ba · 1,822 sqft · built 1900 · 0.78 acres

Last Sale Tax Bill Prior Sale Owner Records
$94,000Feb 1998 $4,0352025 2 Owners on Record Assessor + 3 DocumentsUpdated Jul 2026

17201 W Observatory Rd

3 bd · 1.5 ba · 1,504 sqft · built 1966 · 0.56 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,7972025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

17221 W Observatory Rd

4 bd · 1.5 ba · 1,560 sqft · built 1965 · 0.519 acres

Last Sale Tax Bill Prior Sale Owner Records
$135,000Feb 1998 $3,6172025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
$17,800Jun 2004 $1,1672025 2 Owners on Record Assessor + 1 DocumentUpdated Jul 2026

17308 W Observatory Rd

3 bd · 1.5 ba · 1,162 sqft · built 1957 · 0.48 acres

Last Sale Tax Bill Prior Sale Owner Records
$382,000Nov 2025 $3,5772025 —Nov 2024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

17310 W Observatory Rd

3 bd · 1.5 ba · 1,144 sqft · built 1958 · 0.48 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,2072025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

17321 W Observatory Rd

3 bd · 1.5 ba · 1,323 sqft · built 1968 · 0.519 acres

Last Sale Tax Bill Prior Sale Owner Records
$400,000Jun 2026 $3,6022025 Amount on Record Sep 2001 Owner on Record Owner Occupied Assessor + 5 DocumentsUpdated Sep 2026

17326 W Observatory Rd

3 bd · 1.5 ba · 1,162 sqft · built 1959 · 0.51 acres

Last Sale Tax Bill Prior Sale Owner Records
$273,900May 2021 $3,3602025 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
$68,300Oct 2019 $6,6602025 —Nov 2018 Owner on Record Owner Occupied Assessor + 5 DocumentsUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
$166,900Jul 2013 $2152025 —Nov 2006 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

17624 W Observatory Rd

3 bd · 1 ba · 1,080 sqft · built 1951 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$166,900Jul 2013 $3,3742025 —Nov 2006 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

17685 W Observatory Rd

3 bd · 2 ba · 2,221 sqft · built 2009 · 2.55 acres

Last Sale Tax Bill Prior Sale Owner Records
$82,500Oct 2008 $7,8762025 Amount on Record Mar 2007 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

17710 W Observatory Rd

4 bd · 2 ba · 2,542 sqft · built 2017 · 6.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$80,000Oct 2016 $9,5852025 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

17725 W Observatory Rd

3 bd · 1.5 ba · 2,057 sqft · built 1971 · 2.81 acres

Last Sale Tax Bill Prior Sale Owner Records
$285,000Sep 2006 $5,2062025 —Sep 2006 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Sep 2026

17825 W Observatory Rd

1 bd · 600 sqft · built 1934 · 25.7 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,2652025 2 Owners on Record Assessor + 4 DocumentsUpdated Aug 2026

17910 W Observatory Rd

6 bd · 1 ba · 2,259 sqft · built 1867 · 2.08 acres

Last Sale Tax Bill Prior Sale Owner Records
$50,000Feb 2007 $3,9582025 Amount on Record Jul 2006 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

18045 W Observatory Rd

2 bd · 1 ba · 786 sqft · built 1900 · 5.38 acres

Last Sale Tax Bill Prior Sale Owner Records
$94,100May 2016 $3,4602025 Amount on Record Aug 2014 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Sep 2026

18065 W Observatory Rd

2 bd · 1 ba · 1,267 sqft · built 1900 · 5.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$165,000Aug 2017 $2,2562025 —Jul 2017 Owner on Record Assessor + 2 DocumentsUpdated Jul 2026

18120 W Observatory Rd

3 bd · 2.5 ba · 2,302 sqft · built 2014 · 5.01 acres

Last Sale Tax Bill Prior Sale Owner Records
$850,000Aug 2022 $10,2132025 Amount on Record Mar 2014 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Sep 2026

18200 W Observatory Rd

3 bd · 2.5 ba · 2,390 sqft · built 2015 · 5.01 acres

Last Sale Tax Bill Prior Sale Owner Records
$816,000May 2022 $9,7922025 Amount on Record Nov 2015 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
$1,5182025 —Feb 2026 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

18300 W Observatory Rd

3 bd · 2.5 ba · 3,217 sqft · built 2011 · 10 acres

Last Sale Tax Bill Prior Sale Owner Records
$340,000May 2010 $11,1822025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

18405 W Observatory Rd

3 bd · 2 ba · 1,406 sqft · built 1992 · 5.73 acres

Last Sale Tax Bill Prior Sale Owner Records
$425,000Jun 2020 $6,2862025 Amount on Record Jul 2008 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

18420 W Observatory Rd

4 bd · 2.5 ba · 2,719 sqft · built 1970 · 6.15 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,8712025 —Dec 2002 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

18451 W Observatory Rd

5 bd · 3.5 ba · 3,188 sqft · built 2017 · 5.81 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,0942025 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

18511 W Observatory Rd

5 bd · 4.5 ba · 5,873 sqft · built 2017 · 10.8 acres

Last Sale Tax Bill Prior Sale Owner Records
$16,7482025 2 Owners on Record Owner Occupied Assessor + 7 DocumentsUpdated Aug 2026

18550 W Observatory Rd

3 bd · 3.5 ba · 1,966 sqft · built 1975 · 22.9 acres

Last Sale Tax Bill Prior Sale Owner Records
$560,000Sep 2021 $8,5872025 —Mar 2017 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

18590 W Observatory Rd

3 bd · 2.5 ba · 2,605 sqft · built 1977 · 4.26 acres

Last Sale Tax Bill Prior Sale Owner Records
$425,000Aug 2002 $6,9662025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

18600 W Observatory Rd

3 bd · 2 ba · 1,729 sqft · built 1977 · 1.5 acres

Last Sale Tax Bill Prior Sale Owner Records
$279,000Jul 2017 $4,9582025 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

18625 W Observatory Rd

3 bd · 2 ba · 1,772 sqft · built 1974 · 3.48 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,5352025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

18650 W Observatory Rd

3 bd · 2 ba · 1,846 sqft · built 1973 · 1.15 acres

Last Sale Tax Bill Prior Sale Owner Records
$435,000Jan 2024 $4,4712025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

18700 W Observatory Rd

4 bd · 2 ba · 2,336 sqft · built 1972 · 2.06 acres

Last Sale Tax Bill Prior Sale Owner Records
$140,000Apr 1999 $5,1412025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

18715 W Observatory Rd

3 bd · 2 ba · 1,802 sqft · built 1993 · 4.73 acres

Last Sale Tax Bill Prior Sale Owner Records
—Dec 2011 $5,2382025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

18725 W Observatory Rd

3 bd · 2 ba · 1,680 sqft · built 1977 · 3.16 acres

Last Sale Tax Bill Prior Sale Owner Records
$245,000Nov 2009 $4,9452025 —Aug 2008 Owner on Record AssessorUpdated Sep 2026

18750 W Observatory Rd

4 bd · 1.5 ba · 1,934 sqft · built 1974 · 2 acres

Last Sale Tax Bill Prior Sale Owner Records
$209,000Nov 1999 $5,0332025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

18760 W Observatory Rd

3 bd · 2.5 ba · 1,920 sqft · built 1975 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$249,700Jul 2007 $5,2102025 Amount on Record May 2000 2 Owners on Record Owner Occupied AssessorUpdated Oct 2026

18775 W Observatory Rd

3 bd · 1.5 ba · 1,828 sqft · built 1977 · 1.5 acres

Last Sale Tax Bill Prior Sale Owner Records
$475,000Jun 2026 $4,9842025 Amount on Record May 2010 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Oct 2026

18815 W Observatory Rd

4 bd · 1.5 ba · 2,158 sqft · built 1977 · 1.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$490,000Sep 2025 $4,5432025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026
Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
$1602025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

18875 W Observatory Rd

5 bd · 2.5 ba · 2,721 sqft · built 1972 · 3.11 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 2003 $5,6622025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

19000 W Observatory Rd

4 bd · 2.5 ba · 2,249 sqft · built 1975 · 21.8 acres

Last Sale Tax Bill Prior Sale Owner Records
$234,000Jul 1996 $6,2822025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

19019 W Observatory Rd

4 bd · 3.5 ba · 4,706 sqft · built 1972 · 21.8 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,125,000Dec 2023 $13,0802025 Amount on Record Apr 2023 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

19025 W Observatory Rd

3 bd · 2.5 ba · 1,702 sqft · built 1970 · 1.01 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,3072025 —Jun 2007 Owner on Record AssessorUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
—Nov 2025 $4,6302025 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

19155 W Observatory Rd

5 bd · 2.5 ba · 2,415 sqft · built 1995 · 1.53 acres

Last Sale Tax Bill Prior Sale Owner Records
$343,900Jul 2011 $6,1842025 —Mar 2011 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
$5,1662025 Owner on Record AssessorUpdated Jul 2026

19300 W Observatory Rd

2 bd · 2.5 ba · 1,952 sqft · built 1972 · 38.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$725,000Aug 2022 $24,3582025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

19450 W Observatory Rd

3 bd · 1 ba · 1,302 sqft · built 1923 · 38.1 acres

Last Sale Tax Bill Prior Sale Owner Records
$550,000Oct 2021 $16,7042025 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

19455 W Observatory Rd

4 bd · 2.5 ba · 2,044 sqft · built 1971 · 4.98 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,000Apr 2023 $6,1592025 2 Owners on Record Assessor + 1 DocumentUpdated Aug 2026

19685 W Observatory Rd

4 bd · 2.5 ba · 2,870 sqft · built 1992 · 5.16 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,0382025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

19700 W Observatory Rd

3 bd · 1.5 ba · 1,506 sqft · built 1976 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,6142025 —Aug 2017 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

19750 W Observatory Rd

2 bd · 2.5 ba · 2,868 sqft · built 1976 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$560,000Apr 2005 $8,5282025 Amount on Record Feb 2004 Owner on Record Owner Occupied AssessorUpdated Jul 2026

19820 W Observatory Rd

2 bd · 1 ba · 864 sqft · built 1900 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$190,000Feb 2018 $2,9862025 Amount on Record Mar 2017 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

Property Records in Nearby Streets