Contra Costa County property records for 31 addresses on Key West Way, Discovery Bay, CA · Last verified October 2026
| Properties | 31 |
|---|---|
| Median Sale Price | $730,000 |
| Deeds and Mortgages on File | 70 |
| Median Price per Sqft | $326 |
| Owner Occupied | 90% |
| Median Annual Tax Bill | $7,985 |
| Median Year Built | 2013 |
| Median Ownership Tenure | 8 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9800 Key West Way |
3 bd · 2 ba · 1,886 sqft built 2013 · 0.194 acres | $422,000 Mar 2014 | $7,560 2025 | Assessor + 2 Documents Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9803 Key West Way |
3 bd · 2 ba · 1,886 sqft built 2013 · 0.173 acres | $409,000 May 2014 | $7,467 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9806 Key West Way |
3 bd · 3 ba · 2,342 sqft built 2013 · 0.151 acres | $449,500 Dec 2014 | $7,806 2025 | Assessor + 3 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9809 Key West Way |
3 bd · 2 ba · 2,063 sqft built 2013 · 0.132 acres | $535,000 Apr 2019 | $8,403 2025 | Assessor + 5 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9812 Key West Way |
4 bd · 3 ba · 2,063 sqft built 2013 · 0.137 acres | $474,000 Mar 2014 | $6,394 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9815 Key West Way |
3 bd · 2 ba · 1,869 sqft built 2013 · 0.12 acres | $640,000 Jul 2021 | $9,348 2025 | Assessor + 2 Documents Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9818 Key West Way |
3 bd · 3 ba · 2,342 sqft built 2013 · 0.137 acres | $775,000 Oct 2022 | $10,363 2025 | Assessor + 3 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9821 Key West Way |
4 bd · 3 ba · 2,063 sqft built 2013 · 0.12 acres | $720,000 Apr 2021 | $9,769 2025 | Assessor + 2 Documents Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9824 Key West Way |
4 bd · 3 ba · 2,063 sqft built 2013 · 0.137 acres | $465,000 May 2016 | $7,985 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9827 Key West Way |
4 bd · 3 ba · 2,342 sqft built 2013 · 0.12 acres | $426,500 Aug 2014 | $7,510 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9830 Key West Way |
3 bd · 2 ba · 1,869 sqft built 2013 · 0.137 acres | $420,000 Sep 2015 | $7,425 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9833 Key West Way |
3 bd · 2 ba · 2,063 sqft built 2013 · 0.12 acres | $640,000 Dec 2022 | $9,932 2025 | Assessor + 5 Documents Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9836 Key West Way |
3 bd · 3 ba · 2,342 sqft built 2013 · 0.137 acres | $750,000 Jun 2021 | $10,926 2025 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9839 Key West Way |
3 bd · 2 ba · 1,869 sqft built 2013 · 0.12 acres | $523,500 Mar 2018 | $8,466 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9842 Key West Way |
3 bd · 2 ba · 2,063 sqft built 2013 · 0.137 acres | $416,500 Nov 2013 | $7,489 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9845 Key West Way |
3 bd · 3 ba · 2,342 sqft built 2013 · 0.12 acres | $765,000 Mar 2022 | $4,792 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9848 Key West Way |
3 bd · 3 ba · 2,342 sqft built 2013 · 0.137 acres | $550,000 Nov 2019 | $8,528 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9851 Key West Way |
3 bd · 2 ba · 2,063 sqft built 2013 · 0.12 acres | $409,500 Jun 2014 | $7,397 2025 | Assessor + 2 Documents Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9854 Key West Way |
3 bd · 2 ba · 1,869 sqft built 2013 · 0.137 acres | $397,000 Nov 2013 | $7,238 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9857 Key West Way |
4 bd · 3 ba · 2,342 sqft built 2013 · 0.12 acres | $445,000 Sep 2015 | $7,738 2025 | Assessor + 1 Document Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9860 Key West Way |
3 bd · 3 ba · 2,342 sqft built 2013 · 0.137 acres | $710,000 May 2021 | $10,292 2025 | Assessor + 7 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9863 Key West Way |
4 bd · 3 ba · 2,063 sqft built 2013 · 0.12 acres | $537,000 Jun 2018 | $8,628 2025 | Assessor + 3 Documents Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9866 Key West Way |
4 bd · 3 ba · 2,063 sqft built 2013 · 0.137 acres | $540,000 Jul 2019 | $8,412 2025 | Assessor + 3 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9869 Key West Way |
3 bd · 2 ba · 1,869 sqft built 2013 · 0.12 acres | $418,500 Nov 2013 | $7,589 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9872 Key West Way |
3 bd · 3 ba · 2,342 sqft built 2013 · 0.137 acres | $765,000 Aug 2023 | $10,417 2025 | Assessor + 3 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9875 Key West Way |
3 bd · 2 ba · 2,063 sqft built 2013 · 0.12 acres | $525,000 Oct 2019 | $8,239 2025 | Assessor + 5 Documents Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9878 Key West Way |
3 bd · 2 ba · 1,869 sqft built 2013 · 0.137 acres | $730,000 Jul 2022 | $7,143 2025 | Assessor + 6 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9881 Key West Way |
3 bd · 3 ba · 2,342 sqft built 2013 · 0.121 acres | $520,000 Jan 2020 | $8,181 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9884 Key West Way |
3 bd · 3 ba · 2,342 sqft built 2013 · 0.137 acres | $775,000 Jun 2022 | $10,001 2025 | Assessor + 5 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9887 Key West Way |
3 bd · 2 ba · 1,886 sqft built 2013 · 0.163 acres | $389,500 Mar 2014 | $7,142 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
9890 Key West Way |
4 bd · 3 ba · 2,063 sqft built 2013 · 0.137 acres | — Oct 2013 | $7,670 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |