Boulder County property records for 41 units in 850 20th St, Boulder, CO · Last verified October 2026
| Properties | 41 |
|---|---|
| Median Sale Price | $400,000 |
| Deeds and Mortgages on File | 35 |
| Median Price per Sqft | $549 |
| Owner Occupied | 22% |
| Median Annual Tax Bill | $2,558 |
| Median Year Built | 1967 |
| Median Ownership Tenure | 11 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 101 20th St |
1 bd · 1 ba · 571 sqft built 1967 · 0 acres | $279,700 May 2019 | $2,140 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 102 20th St |
2 bd · 1.75 ba · 860 sqft built 1967 · 0 acres | $479,000 Mar 2024 | $3,033 2025 | Assessor + 7 Documents Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 104 20th St |
1 bd · 1 ba · 720 sqft built 1967 · 0 acres | $44,000 Oct 1982 | $2,391 2025 | Assessor Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 105 20th St |
2 bd · 3.5 ba · 962 sqft built 1967 · 0 acres | $345,000 Feb 2016 | $3,292 2025 | Assessor Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 106 20th St |
1 bd · 1 ba · 584 sqft built 1967 · 0 acres | — May 1992 | $2,239 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 201 20th St |
1 bd · 1 ba · 728 sqft built 1967 · 0 acres | $400,000 Jul 2025 | $2,564 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 202 20th St |
2 bd · 1.75 ba · 930 sqft built 1967 · 0 acres | $245,000 Mar 2014 | $3,202 2025 | Assessor Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 203 20th St |
1 bd · 1 ba · 672 sqft built 1967 · 0 acres | $320,000 Jul 2026 | $2,411 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 204 20th St |
1 bd · 1 ba · 720 sqft built 1967 · 0 acres | $245,000 Jun 2015 | $2,458 2025 | Assessor Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 205 20th St |
2 bd · 1.75 ba · 995 sqft built 1967 · 0 acres | $449,900 Dec 2019 | $3,400 2025 | Assessor + 4 Documents Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 206 20th St |
1 bd · 1 ba · 709 sqft built 1967 · 0 acres | $43,000 Oct 1987 | $2,482 2025 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 301 20th St |
1 bd · 1 ba · 728 sqft built 1967 · 0 acres | $159,000 Apr 2003 | $2,575 2025 | Assessor Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 302 20th St |
2 bd · 1.75 ba · 930 sqft built 1967 · 0 acres | $71,000 Feb 1983 | $2,682 2025 | Assessor Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 303 20th St |
1 bd · 1 ba · 672 sqft built 1967 · 0 acres | $405,000 Mar 2022 | $2,386 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 304 20th St |
1 bd · 1 ba · 720 sqft built 1967 · 0 acres | $298,500 Apr 2018 | $2,674 2025 | Assessor + 2 Documents Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 305 20th St |
2 bd · 1.75 ba · 995 sqft built 1967 · 0 acres | $114,850 Apr 1997 | $3,479 2025 | Assessor Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 306 20th St |
1 bd · 1 ba · 709 sqft built 1967 · 0 acres | $54,000 Mar 1992 | $2,540 2025 | Assessor Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 401 20th St |
1 bd · 1 ba · 728 sqft built 1967 · 0 acres | $295,000 Jun 2016 | $2,575 2025 | Assessor Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 402 20th St |
2 bd · 1.75 ba · 930 sqft built 1967 · 0 acres | $475,000 Aug 2021 | $3,386 2025 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 403 20th St |
1 bd · 1 ba · 672 sqft built 1967 · 0 acres | $390,000 Aug 2025 | $2,386 2025 | Assessor Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 404 20th St |
1 bd · 1 ba · 720 sqft built 1967 · 0 acres | $315,000 Jan 2019 | $2,558 2025 | Assessor + 3 Documents Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 405 20th St |
2 bd · 1.75 ba · 995 sqft built 1967 · 0 acres | $65,300 Sep 1979 | $3,479 2025 | Assessor Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 406 20th St |
1 bd · 1 ba · 709 sqft built 1967 · 0 acres | $48,500 Oct 1979 | $2,459 2025 | Assessor Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 501 20th St |
1 bd · 1 ba · 728 sqft built 1967 · 0 acres | $130,000 Jul 2024 | $2,494 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 502 20th St |
2 bd · 1.75 ba · 930 sqft built 1967 · 0 acres | $490,000 May 2021 | $3,414 2025 | Assessor + 4 Documents Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 503 20th St |
1 bd · 1 ba · 672 sqft built 1967 · 0 acres | $375,000 Mar 2024 | $2,386 2025 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 504 20th St |
1 bd · 1 ba · 720 sqft built 1967 · 0 acres | $165,150 Jul 2004 | $2,558 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 505 20th St |
2 bd · 1.75 ba · 995 sqft built 1967 · 0 acres | $290,000 May 2012 | $3,052 2025 | Assessor Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 506 20th St |
1 bd · 1 ba · 709 sqft built 1967 · 0 acres | $300,000 May 2016 | $2,459 2025 | Assessor Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 601 20th St |
1 bd · 1 ba · 728 sqft built 1967 · 0 acres | $125,000 Aug 1999 | $2,575 2025 | Assessor Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 602 20th St |
2 bd · 1.75 ba · 995 sqft built 1967 · 0 acres | $140,000 Aug 1999 | $3,401 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 603 20th St |
1 bd · 1 ba · 672 sqft built 1967 · 0 acres | $180,000 Jun 2005 | $2,386 2025 | Assessor Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 604 20th St |
1 bd · 1 ba · 720 sqft built 1967 · 0 acres | $300,000 Feb 2017 | $2,558 2025 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 605 20th St |
2 bd · 1.75 ba · 995 sqft built 1967 · 0 acres | $580,000 Sep 2024 | $3,399 2025 | Assessor Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 606 20th St |
1 bd · 1 ba · 709 sqft built 1967 · 0 acres | $61,500 Sep 1985 | $2,540 2025 | Assessor Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 701 20th St |
1 bd · 1 ba · 728 sqft built 1967 · 0 acres | $68,500 Apr 1984 | $2,575 2025 | Assessor Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 702 20th St |
2 bd · 1.75 ba · 995 sqft built 1967 · 0 acres | $88,000 Aug 1985 | $3,481 2025 | Assessor Updated Sep 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 703 20th St |
1 bd · 1 ba · 672 sqft built 1967 · 0 acres | $147,500 Sep 2000 | $2,386 2025 | Assessor Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 704 20th St |
1 bd · 1 ba · 720 sqft built 1967 · 0 acres | $378,000 Jul 2025 | $2,477 2025 | Assessor Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 705 20th St |
2 bd · 1.75 ba · 995 sqft built 1967 · 0 acres | $425,000 Apr 2016 | $3,479 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
850, Apt 706 20th St |
1 bd · 1 ba · 709 sqft built 1967 · 0.58 acres | — Apr 1993 | $2,459 2025 | Assessor + 2 Documents Updated Sep 2026 | Owner on File |