TOWNSHIP 31 · TAX YEAR 2026Proviso: 2,081 homes assessed above their comparables
Out of 34,513 homes the Assessor valued in Proviso for 2026, 2,081 sit at least 10% above the median of their comparables. Together they could save their owners about $2,696,073 a year if reduced to that median.
- Flagged homes
- 2,081
- Total gap
- $12,711,329
- Est. savings a year
- $2,696,073
- Status
- 2026 values published; Board dates not yet announced
tax year 2026
assessed value above the comparables
if every gap were closed
Board of Review calendar
Free sample: 25 homes from the list
Spread evenly from the top of the list to the bottom, not the best rows. The paid list has every flagged home in the same format. Open any evidence PDF to see what you would file.
| PIN | Address | Sq ft | Assessed | Comps | Gap | Est. saving | Evidence |
|---|---|---|---|---|---|---|---|
| 15324100320000 | 441 MALDEN AVE, LA GRANGE PARK | 3,766 | $125,000 | 17 | $46,588 (37.3%) | $9,881 | |
| 15124350020000 | 304 MARENGO AVE, FOREST PARK | 1,011 | $48,000 | 36 | $12,924 (26.9%) | $2,741 | |
| 15162110240000 | 1014 S 30TH AVE, BELLWOOD | 1,000 | $28,000 | 247 | $10,857 (38.8%) | $2,303 | |
| 15033070070000 | 1403 N 18TH AVE, MELROSE PARK | 1,534 | $44,000 | 50 | $9,677 (22.0%) | $2,052 | |
| 15151140410000 | 1438 S 21ST AVE, MAYWOOD | 720 | $24,000 | 17 | $8,659 (36.1%) | $1,837 | |
| 15333210040000 | 431 N CATHERINE AVE, LA GRANGE PARK | 1,810 | $73,000 | 103 | $8,107 (11.1%) | $1,719 | |
| 15161070560000 | 3905 ADAMS ST, BELLWOOD | 1,201 | $27,000 | 105 | $7,480 (27.7%) | $1,587 | |
| 15091140270000 | 302 RICE AVE, BELLWOOD | 1,162 | $27,000 | 76 | $6,884 (25.5%) | $1,460 | |
| 15134160230000 | 1005 FERDINAND AVE, FOREST PARK | 1,662 | $45,000 | 40 | $6,298 (14.0%) | $1,336 | |
| 15041100150000 | 1717 N 39TH AVE 1, STONE PARK | 1,224 | $28,000 | 135 | $5,935 (21.2%) | $1,259 | |
| 15041140550000 | 1704 N 34TH AVE, STONE PARK | 616 | $19,000 | 19 | $5,609 (29.5%) | $1,190 | |
| 15071130160000 | 1516 HARDING AVE, BERKELEY | 2,000 | $38,000 | 73 | $5,249 (13.8%) | $1,113 | |
| 15083120680000 | 519 MAPLE LN, HILLSIDE | 1,140 | $29,001 | 39 | $5,009 (17.3%) | $1,062 | |
| 15092040340000 | 226 S 30TH AVE, BELLWOOD | 840 | $20,000 | 23 | $4,809 (24.0%) | $1,020 | |
| 15073170010000 | 5821 PROSPECT AVE, BERKELEY | 718 | $24,000 | 11 | $4,618 (19.2%) | $979 | |
| 15143170190000 | 2010 S 7TH AVE, MAYWOOD | 946 | $29,000 | 357 | $4,429 (15.3%) | $939 | |
| 15344180010000 | 9147 SHERIDAN AVE, BROOKFIELD | 988 | $27,001 | 27 | $4,216 (15.6%) | $894 | |
| 15213170110000 | 1951 PORTSMOUTH AVE, WESTCHESTER | 820 | $29,000 | 135 | $4,043 (13.9%) | $858 | |
| 15341290540000 | 9305 JEFFERSON AVE, BROOKFIELD | 854 | $34,000 | 220 | $3,886 (11.4%) | $824 | |
| 15143310090000 | 2121 S 2ND AVE, MAYWOOD | 889 | $27,000 | 395 | $3,757 (13.9%) | $797 | |
| 15334170080000 | 436 KEMMAN AVE, LA GRANGE PARK | 1,066 | $36,000 | 440 | $3,609 (10.0%) | $765 | |
| 15341290530000 | 9317 JEFFERSON AVE, BROOKFIELD | 768 | $33,000 | 71 | $3,461 (10.5%) | $734 | |
| 15051030460000 | 1522 S HAROLD AVE, MELROSE PARK | 1,100 | $28,000 | 157 | $3,336 (11.9%) | $708 | |
| 15041050290000 | 1822 N 35TH AVE, STONE PARK | 984 | $22,000 | 45 | $3,162 (14.4%) | $671 | |
| 15111140070000 | 501 N 3RD AVE, MAYWOOD | 1,618 | $30,000 | 115 | $3,033 (10.1%) | $643 |
Download the sample as a spreadsheet
Buy the Proviso list
The spreadsheet arrives by email within the hour, with a link for evidence PDFs on any home in it. At most 5 firms can buy this township for 2026.
Fee figures assume a 7% composite tax rate, the 3.03 state multiplier and a contingency fee of 25% to 40% of first-year savings. They are estimates, not county figures.