Cook County property records for 63 units in 435 William St, River Forest, IL · Last verified October 2026
| Properties | 63 |
|---|---|
| Median Sale Price | $350,000 |
| Deeds and Mortgages on File | 58 |
| Median Price per Sqft | $193 |
| Owner Occupied | 90% |
| Median Annual Tax Bill | $7,887 |
| Median Year Built | 2001 |
| Median Ownership Tenure | 11 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 201 William St |
1 bd · 1 ba · 1,499 sqft built 2001 · 0.741 acres | $250,000 Jun 2021 | $7,576 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 202 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $345,000 Aug 2006 | $9,521 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 203 William St |
3 bd · 3 ba · 2,905 sqft built 2001 · 0.741 acres | $500,000 Apr 2021 | $13,773 2023 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 204 William St |
2 bd · 2 ba · 1,560 sqft built 2001 · 0.741 acres | $129,000 Aug 2012 | $6,975 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 205 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | $325,000 Jan 2026 | $6,567 2024 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 206 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | $385,000 Jul 2022 | $6,303 2023 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 207 William St |
2 bd · 2 ba · 1,563 sqft built 2001 · 0.741 acres | $252,000 Mar 2007 | $6,263 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 208 William St |
3 bd · 3 ba · 2,905 sqft built 2001 · 0.741 acres | $575,000 Apr 2024 | $15,272 2024 | Assessor + 2 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 209 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $368,000 Aug 2007 | $9,521 2023 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 210 William St |
1 bd · 1 ba · 1,444 sqft built 2001 · 0.741 acres | $355,000 Apr 2024 | $7,540 2024 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 301 William St |
1 bd · 1 ba · 1,499 sqft built 2001 · 0.741 acres | $5,942 2023 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 302 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $300,000 Oct 2020 | $7,887 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 303 William St |
2 bd · 2 ba · 2,581 sqft built 2001 · 0.741 acres | $540,000 Mar 2022 | $13,044 2023 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 304 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $365,000 Mar 2023 | $9,904 2024 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 305 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | $4,545 2023 | Assessor + 1 Document Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 306 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | $270,000 Aug 2002 | $6,303 2023 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 307 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $350,000 Apr 2021 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 308 William St |
3 bd · 3 ba · 2,581 sqft built 2001 · 0.741 acres | $357,000 Nov 2001 | $11,410 2023 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 309 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $350,000 Apr 2024 | $9,904 2024 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 310 William St |
1 bd · 1 ba · 1,444 sqft built 2001 · 0.741 acres | $247,500 Sep 2002 | $5,615 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 401 William St |
1 bd · 1 ba · 1,499 sqft built 2001 · 0.741 acres | $120,000 Jul 2012 | $7,576 2023 | Assessor Updated Jun 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 402 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $180,500 Dec 2011 | $7,887 2023 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 403 William St |
3 bd · 3 ba · 2,581 sqft built 2001 · 0.741 acres | $385,000 Jul 2021 | $13,569 2024 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 404 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $249,500 Sep 2010 | $3,056 2023 | Assessor + 1 Document Updated Jun 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 405 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | $200,000 Apr 2015 | $2,276 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 406 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | — Oct 2001 | $7,029 2023 | Assessor Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 407 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $390,000 Mar 2023 | $9,904 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 408 William St |
3 bd · 3 ba · 2,581 sqft built 2001 · 0.741 acres | $13,044 2023 | Assessor + 2 Documents Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 409 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $265,000 Jun 2017 | $8,613 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 410 William St |
1 bd · 1 ba · 1,444 sqft built 2001 · 0.741 acres | $181,500 Aug 2016 | $6,341 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 501 William St |
1 bd · 1 ba · 1,435 sqft built 2001 · 0.741 acres | — Oct 2001 | $6,343 2023 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 502 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $285,000 Apr 2018 | $7,887 2023 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 503 William St |
3 bd · 3 ba · 2,581 sqft built 2001 · 0.741 acres | $300,000 Jun 2016 | $5,116 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 504 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $350,000 Mar 2021 | $9,521 2023 | Assessor + 1 Document Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 505 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | $233,000 Nov 2016 | $8,255 2024 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 506 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | $260,000 Nov 2009 | $7,029 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 507 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $310,000 May 2004 | $7,887 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 508 William St |
3 bd · 3 ba · 2,581 sqft built 2001 · 0.741 acres | $380,000 Aug 2002 | $11,880 2024 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 509 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $200,000 Aug 2012 | $3,056 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 510 William St |
1 bd · 1 ba · 1,444 sqft built 2001 · 0.741 acres | — Oct 2001 | $7,540 2024 | Assessor Updated Aug 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 601 William St |
1 bd · 1 ba · 1,499 sqft built 2001 · 0.741 acres | $245,000 Feb 2022 | $4,437 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 602 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $325,000 Oct 2020 | $7,887 2023 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 603 William St |
3 bd · 3 ba · 2,581 sqft built 2001 · 0.741 acres | — Aug 2004 | $11,410 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 604 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | — Dec 2025 | $9,904 2024 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 605 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | $230,000 Nov 2011 | $6,303 2023 | Assessor + 1 Document Updated Jun 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 606 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | $350,000 Dec 2024 | $8,255 2024 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 607 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $440,000 Jan 2026 | $8,215 2024 | Assessor + 1 Document Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 608 William St |
3 bd · 3 ba · 2,581 sqft built 2001 · 0.741 acres | $422,500 Mar 2006 | $11,410 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 609 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $332,000 Nov 2024 | $8,215 2024 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 610 William St |
1 bd · 1 ba · 1,444 sqft built 2001 · 0.741 acres | $274,000 Jul 2021 | $7,248 2023 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 701 William St |
1 bd · 1 ba · 1,499 sqft built 2001 · 0.741 acres | $155,000 Sep 2013 | $5,942 2023 | Assessor Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 702 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $275,000 Oct 2014 | $8,215 2024 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 704 William St |
3 bd · 4 ba · 4,475 sqft built 2001 · 0.741 acres | $611,000 Mar 2002 | $23,528 2024 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 706 William St |
2 bd · 2 ba · 1,570 sqft built 2001 · 0.741 acres | — Nov 2001 | $6,303 2023 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 707 William St |
3 bd · 4 ba · 4,475 sqft built 2001 · 0.741 acres | $605,000 Feb 2002 | $21,839 2024 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 709 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $385,000 Oct 2021 | $7,887 2023 | Assessor + 3 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 710 William St |
1 bd · 1 ba · 1,444 sqft built 2001 · 0.741 acres | $240,000 Dec 2001 | $5,615 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 801 William St |
2 bd · 2 ba · 1,592 sqft built 2001 · 0.741 acres | $220,000 Dec 2008 | $6,407 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 802 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | $435,000 Jul 2026 | $8,215 2024 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 804 William St |
3 bd · 4 ba · 4,475 sqft built 2001 · 0.741 acres | $805,500 Oct 2010 | $20,984 2023 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 807 William St |
3 bd · 4 ba · 4,475 sqft built 2001 · 0.741 acres | $737,500 Dec 2001 | $20,984 2023 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 809 William St |
2 bd · 2 ba · 1,884 sqft built 2001 · 0.741 acres | — Nov 2001 | $7,887 2023 | Assessor Updated Jun 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435, Unit 810 William St |
2 bd · 2 ba · 1,555 sqft built 2001 · 0.741 acres | $350,000 Mar 2022 | $6,950 2023 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |