Boone County property records for 30 addresses on S Union St, Madrid, IA · Last verified October 2026
| Properties | 30 |
|---|---|
| Median Sale Price | $205,000 |
| Deeds and Mortgages on File | 32 |
| Median Price per Sqft | $158 |
| Owner Occupied | 83% |
| Median Annual Tax Bill | $3,424 |
| Median Year Built | 1920 |
| Median Ownership Tenure | 11 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
103 S Union St |
4 bd · 2 ba · 2,110 sqft built 1910 · 0.2 acres | $120,000 Aug 1999 | $4,676 2024 | Assessor + 1 Document Updated Oct 2025 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
106 S Union St |
3 bd · 1 ba · 1,476 sqft built 1920 · 0.2 acres | $135,000 Aug 2016 | $3,406 2024 | Assessor + 1 Document Updated Oct 2025 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
107 S Union St |
3 bd · 2.5 ba · 2,480 sqft built 1900 · 0.212 acres | $5,000 2025 | Assessor Updated Apr 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
109 S Union St |
2 bd · 2 ba · 816 sqft built 1920 · 0.075 acres | $92,000 Jan 2015 | $2,634 2024 | Assessor Updated Oct 2025 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
110 S Union St |
3 bd · 1.5 ba · 1,811 sqft built 1907 · 0.151 acres | $310,000 May 2026 | $2,436 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
209 S Union St |
5 bd · 1 ba · 2,970 sqft built 1880 · 0.2 acres | — Sep 1985 | $294 2024 | Assessor Updated Oct 2025 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
304 S Union St |
1,632 sqft built 2015 · 0.31 acres | $20,000 Mar 2007 | $1,088 2024 | Assessor Updated Oct 2025 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
309 S Union St |
3 bd · 5 ba · 2,016 sqft built 2000 · 1.06 acres | — Apr 2002 | $6,474 2024 | Assessor + 1 Document Updated Oct 2025 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
310 S Union St |
3,696 sqft built 1990 · 0.371 acres | — Mar 2007 | $1,884 2024 | Assessor Updated Oct 2025 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
403 S Union St |
3 bd · 7 ba · 1,950 sqft built 1998 · 3.65 acres | — Jul 2024 | $8,052 2024 | Assessor Updated Jan 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
404 S Union St |
4 bd · 7 ba · 2,024 sqft built 2002 · 0.389 acres | $25,000 May 2002 | $6,414 2024 | Assessor + 1 Document Updated Oct 2025 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
408 S Union St |
3 bd · 5 ba · 1,927 sqft built 2002 · 0.569 acres | $25,000 May 2002 | $7,146 2024 | Assessor + 1 Document Updated Oct 2025 | 3 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
412 S Union St |
3 bd · 4 ba · 2,159 sqft built 2001 · 0.569 acres | $210,000 Apr 2015 | $5,876 2024 | Assessor Updated Oct 2025 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
416 S Union St |
3 bd · 4 ba · 1,279 sqft built 2002 · 0.55 acres | $246,000 Jun 2020 | $5,706 2024 | Assessor + 2 Documents Updated Oct 2025 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
501 S Union St |
3 bd · 4 ba · 1,596 sqft built 1999 · 0.509 acres | $205,000 Jan 2025 | Assessor Updated Oct 2025 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
505 S Union St |
3 bd · 1 ba · 904 sqft built 1900 · 0.2 acres | $105,000 Oct 2024 | $1,564 2024 | Assessor + 1 Document Updated Jan 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
508 S Union St |
6 bd · 2 ba · 2,304 sqft built 1999 · 0.244 acres | — Aug 2012 | $3,152 2024 | Assessor Updated Oct 2025 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
603 S Union St |
6 bd · 2 ba · 2,280 sqft built 1999 · 0.289 acres | — Aug 2012 | $4,036 2024 | Assessor Updated Oct 2025 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
609 S Union St |
2 bd · 1 ba · 912 sqft built 1890 · 0.425 acres | $138,000 Nov 2019 | $2,584 2024 | Assessor + 5 Documents Updated Feb 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
610 S Union St |
2 bd · 1 ba · 1,005 sqft built 1875 · 0.2 acres | $1,310 2025 | Assessor + 1 Document Updated Apr 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
614 S Union St |
2 bd · 1 ba · 924 sqft built 1901 · 0.2 acres | $97,500 May 2017 | $2,138 2024 | Assessor + 1 Document Updated Jan 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
615 S Union St |
2 bd · 1 ba · 852 sqft built 1890 · 0.173 acres | $125,000 Apr 2020 | $2,482 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
618 S Union St |
1 bd · 1 ba · 1,118 sqft built 1936 · 0.2 acres | $92,000 Jun 2009 | $2,612 2024 | Assessor + 3 Documents Updated Mar 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
619 S Union St |
3 bd · 1 ba · 1,040 sqft built 1898 · 0.173 acres | $165,000 Jul 2021 | $2,716 2024 | Assessor + 4 Documents Updated Oct 2025 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
624 S Union St |
2 bd · 1 ba · 925 sqft built 1918 · 0.292 acres | $189,500 Sep 2023 | $3,516 2024 | Assessor + 3 Documents Updated Jan 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
805 S Union St |
3 bd · 2 ba · 1,152 sqft built 1920 · 0.206 acres | $125,500 May 2007 | $3,424 2024 | Assessor Updated Oct 2025 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
806 S Union St |
3 bd · 2 ba · 1,092 sqft built 1956 · 0.227 acres | $131,000 Jul 2013 | $3,852 2024 | Assessor Updated Oct 2025 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
809 S Union St |
3 bd · 2.5 ba · 2,107 sqft built 1902 · 0.224 acres | $224,500 Jun 2024 | $3,938 2025 | Assessor + 4 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
815 S Union St |
3 bd · 2 ba · 1,740 sqft built 1925 · 0.2 acres | $4,626 2024 | Assessor Updated Oct 2025 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
901 S Union St |
2 bd · 2 ba · 1,513 sqft built 1912 · 0.2 acres | $120,000 Jun 2016 | $3,906 2025 | Assessor Updated Sep 2026 | 2 Owners on File Owner Occupied |