Contra Costa County property records for 63 addresses on Castle Rock Rd, Walnut Creek, CA · Last verified October 2026
| Properties | 63 |
|---|---|
| Median Sale Price | $1,590,000 |
| Deeds and Mortgages on File | 109 |
| Median Price per Sqft | $687 |
| Owner Occupied | 73% |
| Median Annual Tax Bill | $12,399 |
| Median Year Built | 1967 |
| Median Ownership Tenure | 15 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
53 Castle Rock Rd |
4 bd · 2 ba · 2,120 sqft built 1967 · 0.278 acres | $2,300 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
63 Castle Rock Rd |
3 bd · 2.5 ba · 2,366 sqft built 1967 · 0.283 acres | $1,110,000 May 2017 | $14,932 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
73 Castle Rock Rd |
3 bd · 2 ba · 1,692 sqft built 1967 · 0.274 acres | $455,000 Apr 2000 | $8,528 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
83 Castle Rock Rd |
4 bd · 3 ba · 2,606 sqft built 1967 · 0.274 acres | $6,245 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
93 Castle Rock Rd |
4 bd · 2 ba · 2,484 sqft built 1967 · 0.274 acres | $453,000 Nov 2024 | $7,468 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
103 Castle Rock Rd |
5 bd · 3 ba · 2,366 sqft built 1967 · 0.274 acres | $2,462 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
108 Castle Rock Rd |
3 bd · 2 ba · 2,574 sqft built 1959 · 0.459 acres | $725,000 Sep 2009 | $11,138 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
135 Castle Rock Rd |
5 bd · 3 ba · 2,459 sqft built 1967 · 0.274 acres | $285,000 Jan 1991 | $7,863 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
145 Castle Rock Rd |
4 bd · 3 ba · 1,920 sqft built 1967 · 0.274 acres | $1,590,000 Aug 2023 | $18,787 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
207 Castle Rock Rd |
4 bd · 3 ba · 2,325 sqft built 1967 · 0.274 acres | $1,250,000 Jun 2019 | $16,534 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
217 Castle Rock Rd |
5 bd · 3 ba · 2,366 sqft built 1967 · 0.274 acres | $2,955 2025 | Assessor + 1 Document Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
227 Castle Rock Rd |
4 bd · 2 ba · 2,120 sqft built 1967 · 0.274 acres | $378,000 Apr 1998 | $7,706 2025 | Assessor + 3 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
309 Castle Rock Rd |
3 bd · 2 ba · 1,692 sqft built 1967 · 0.274 acres | $1,100,000 Jul 2018 | $14,474 2025 | Assessor + 4 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
319 Castle Rock Rd |
4 bd · 3 ba · 2,211 sqft built 1967 · 0.274 acres | $1,520,000 Nov 2024 | $17,665 2025 | Assessor + 3 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
322 Castle Rock Rd |
4 bd · 2 ba · 2,120 sqft built 1969 · 0.272 acres | $355,000 Jan 1998 | $7,142 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
329 Castle Rock Rd |
3 bd · 2 ba · 1,692 sqft built 1967 · 0.274 acres | $1,805,000 Feb 2025 | $20,733 2025 | Assessor + 6 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
332 Castle Rock Rd |
4 bd · 4 ba · 3,221 sqft built 1969 · 0.282 acres | $1,895,000 Nov 2022 | $22,645 2025 | Assessor + 3 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
339 Castle Rock Rd |
3.64 acres | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
400 Castle Rock Rd |
4 bd · 2 ba · 2,192 sqft built 1969 · 0.25 acres | $1,350,000 Sep 2021 | $16,700 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
404 Castle Rock Rd |
5 bd · 3 ba · 2,366 sqft built 1969 · 0.253 acres | — Dec 2013 | $6,926 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
408 Castle Rock Rd |
4 bd · 3 ba · 1,920 sqft built 1969 · 0.247 acres | $313,000 Mar 1990 | $7,163 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
412 Castle Rock Rd |
3 bd · 2 ba · 1,709 sqft built 1969 · 0.253 acres | $935,000 Nov 2018 | $12,399 2025 | Assessor + 6 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
416 Castle Rock Rd |
4 bd · 3 ba · 2,676 sqft built 1969 · 0.247 acres | $338,500 Feb 1994 | $7,158 2025 | Assessor + 2 Documents Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
425 Castle Rock Rd |
33.5 acres | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
431 Castle Rock Rd |
4 bd · 4 ba · 3,946 sqft built 1960 · 1 acre | $340,000 Apr 1988 | $9,389 2025 | Assessor Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
443 Castle Rock Rd |
3 bd · 2 ba · 2,546 sqft built 1962 · 1.15 acres | $1,450,000 Sep 2015 | $16,511 2025 | Assessor Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
610 Castle Rock Rd |
4 bd · 4 ba · 4,033 sqft built 1989 · 0.917 acres | $1,450,000 Apr 2010 | $21,491 2025 | Assessor + 2 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
630 Castle Rock Rd |
5 bd · 5 ba · 4,241 sqft built 1989 · 0.878 acres | $19,014 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
638 Castle Rock Rd |
4 bd · 3.5 ba · 4,033 sqft built 1988 · 0.879 acres | $1,399,000 Nov 2002 | $23,718 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
645 Castle Rock Rd |
4 bd · 3 ba · 3,326 sqft built 1980 · 1.19 acres | $2,467,000 Feb 2022 | $25,056 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
650 Castle Rock Rd |
4 bd · 3 ba · 3,253 sqft built 1988 · 0.886 acres | $1,370,000 Sep 2019 | $17,447 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
685 Castle Rock Rd |
6 bd · 3.5 ba · 3,534 sqft built 1985 · 1.38 acres | $1,390,000 Dec 2011 | $20,174 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
695 Castle Rock Rd |
0.314 acres | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
700 Castle Rock Rd |
2,312 sqft built 1970 · 4.9 acres | $3,734 2025 | Assessor + 2 Documents Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
705 Castle Rock Rd |
6 bd · 4.5 ba · 5,447 sqft built 1989 · 2.35 acres | $1,500,000 Nov 2008 | $22,215 2025 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
715 Castle Rock Rd |
4 bd · 3.5 ba · 5,070 sqft built 1986 · 1.87 acres | $2,910,000 Oct 2026 | $19,059 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
725 Castle Rock Rd |
4 bd · 3 ba · 3,661 sqft built 1985 · 1.8 acres | $1,750,000 Feb 2007 | $26,688 2025 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
747 Castle Rock Rd |
4 bd · 5 ba · 4,222 sqft built 2019 · 0.959 acres | $585,000 Mar 2015 | $21,783 2025 | Assessor + 3 Documents Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
750 Castle Rock Rd |
1,142 sqft built 1944 · 1.03 acres | $1,355,000 Dec 2024 | $14,428 2025 | Assessor + 7 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
777 Castle Rock Rd |
3 bd · 3 ba · 2,934 sqft built 1978 · 1.48 acres | $1,120,000 Jul 2015 | $15,869 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
822 Castle Rock Rd |
3,353 sqft built 1963 · 0.9 acres | $6,782 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
825 Castle Rock Rd |
4 bd · 3 ba · 4,207 sqft built 1997 · 3.17 acres | $73,000 May 2012 | $12,614 2025 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
888 Castle Rock Rd |
2,369 sqft built 1962 · 1.09 acres | $1,550,000 Oct 2019 | $18,783 2025 | Assessor + 5 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
971 Castle Rock Rd |
4.87 acres | $1,832 2025 | Assessor + 1 Document Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
980 Castle Rock Rd |
2 bd · 2 ba · 780 sqft built 1989 · 2.33 acres | $103 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
981 Castle Rock Rd |
2,418 sqft built 1961 · 1.16 acres | $414,000 Dec 1997 | $7,372 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1000 Castle Rock Rd |
7 bd · 4.5 ba · 5,058 sqft built 2005 · 2.49 acres | $540,000 Jul 1999 | $16,497 2025 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1001 Castle Rock Rd |
3 bd · 2 ba · 1,958 sqft built 1951 · 2 acres | $4,223 2025 | Assessor + 4 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1025 Castle Rock Rd |
1,613 sqft built 1938 · 2 acres | — Nov 2000 | $1,702 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1030 Castle Rock Rd |
1,909 sqft built 1941 · 0.95 acres | $807,500 Mar 2004 | $12,813 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1035 Castle Rock Rd |
93.3 acres | — Jul 1984 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1045 Castle Rock Rd |
2,963 sqft built 1930 · 1.22 acres | $67 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1100 Castle Rock Rd |
2,028 sqft built 1945 · 0.6 acres | $2,521 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1150 Castle Rock Rd |
1,800 sqft built 1957 · 0.929 acres | $4,954 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1250 Castle Rock Rd |
3,740 sqft built 1970 · 1.23 acres | $3,859 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1300 Castle Rock Rd |
2,307 sqft built 1958 · 1.01 acres | — Jan 1999 | $7,482 2025 | Assessor Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1314 Castle Rock Rd |
2,660 sqft built 1965 · 2.53 acres | $1,100,000 Sep 2010 | $15,632 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1330 Castle Rock Rd |
1,626 sqft built 1963 · 3.8 acres | $1,034,500 Dec 2020 | $20,791 2025 | Assessor + 5 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1350 Castle Rock Rd |
1,828 sqft built 1957 · 1.4 acres | $2,323 2025 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1400 Castle Rock Rd |
2,391 sqft built 1957 · 1.75 acres | $3,389 2025 | Assessor + 4 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1550 Castle Rock Rd |
6.1 acres | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1600 Castle Rock Rd |
109 acres | — Jul 2002 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1700 Castle Rock Rd |
1,240 sqft built 1938 · 12.7 acres | — Nov 1985 | Assessor Updated Jul 2026 | Owner on File |