DuPage County property records for 12 addresses on Marian Sq, Oak Brook, IL · Last verified September 2026
| Properties | 12 |
|---|---|
| Median Sale Price | $890,000 |
| Deeds and Mortgages on File | 13 |
| Median Price per Sqft | $216 |
| Owner Occupied | 100% |
| Median Annual Tax Bill | $18,590 |
| Median Year Built | 1985 |
| Median Ownership Tenure | 26 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
601 Marian Sq |
4,003 sqft built 1988 · 0.519 acres | $20,188 2025 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
603 Marian Sq |
3,412 sqft built 1985 · 0.51 acres | $650,000 Jun 1995 | $17,380 2025 | Assessor + 1 Document Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
604 Marian Sq |
3,517 sqft built 1981 · 0.48 acres | $18,391 2025 | Assessor + 2 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
605 Marian Sq |
4,083 sqft built 1984 · 0.5 acres | $333,333 Jun 2017 | $15,780 2025 | Assessor + 2 Documents Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
606 Marian Sq |
4,007 sqft built 1984 · 0.48 acres | $740,000 Jul 1999 | $15,928 2025 | Assessor + 2 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
607 Marian Sq |
4,602 sqft built 1988 · 0.53 acres | $1,050,000 Dec 2000 | $18,590 2025 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
608 Marian Sq |
3,279 sqft built 1984 · 0.46 acres | — Oct 2002 | $18,672 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
610 Marian Sq |
3,365 sqft built 1985 · 0.5 acres | — Oct 1998 | $18,364 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
611 Marian Sq |
4 bd · 4.5 ba · 3,722 sqft built 1985 · 0.5 acres | $890,000 Sep 2004 | $20,229 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
612 Marian Sq |
4,142 sqft built 1985 · 0.53 acres | $897,500 Jun 1998 | $20,329 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
613 Marian Sq |
5 bd · 4.5 ba · 3,492 sqft built 1984 · 0.58 acres | $1,209,000 Jun 2022 | $17,285 2025 | Assessor + 4 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
614 Marian Sq |
5,021 sqft built 1990 · 0.6 acres | $24,822 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |