River Forest Was Reassessed in 2026. Here's Where Your Appeal Stands.

River Forest is a small, established village of larger older homes, condominiums, and a compact commercial corridor along Lake Street and Madison Street. 2026 is its reassessment year — the most consequential point in the three-year cycle, when the Assessor sets a fresh value for every property that generally rides until the next reassessment in 2029. Even though the first-level filing window has closed, understanding where you stand and what comes next can still protect you from years of overpayment.

River Forest Was Reassessed in 2026

Cook County reassesses each township once every three years, on a three-section "triad" rotation — the City of Chicago, the north suburbs, and the south and west suburbs. River Forest is in the south and west suburban group, last reassessed in 2023 and reassessed again now in 2026. Whatever value was set this year generally carries forward until the next reassessment in 2029, which is why getting it corrected matters well beyond a single tax bill.

The Assessor Window Has Closed — Here's What's Still Open

River Forest's 2026 Assessor appeal window ran from the reassessment notice on April 20 to the filing deadline on June 2, 2026, and is now closed. That's not the end of the road for either homeowners or commercial owners:

1. If you filed with the Assessor, check your decision on the Assessor's site; the Board of Review is a separate, independent second look.
2. The Board of Review ran its River Forest window August 3 to September 1, 2026, after the Assessor stage. It opens every year, even to owners who didn't file with the Assessor, and the Board reviews the evidence fresh.
3. Annual appeals remain available every year. If 2026 has passed you by, you can still challenge your value in a future year.

Residential: What the Last Reassessment Showed

The clearest guide to what a River Forest home appeal can achieve is the 2023 reassessment — and the results were strong. That year, 1,723 appeals were filed townwide, counting each appeal once (a condo building's units, decided together, are one appeal). Among residential properties, 38.3% won a reduction — 648 of 1,690 — one of the higher residential success rates in Cook County, with a typical (median) assessed-value cut of about $7,690 (larger than most townships, reflecting River Forest's higher home values).

What stands out is how consistently strong the results were — most home types landed between the mid-30s and 40s percent, with the village's signature large older homes (Class 2-06) making up the bulk of the appeals. Condo appeals (Class 2-99) won less often, 28.0%; *a condo appeal often covers a whole building, so 50 appeals covered 750 units. The large typical reduction reflects River Forest's larger home values: when the assessed value moves, it tends to move by a lot.

Commercial: Your Income Is the Argument

River Forest's commercial base is small — a compact mix of storefronts, mixed-use buildings, and a handful of larger properties — but income-property owners did well in the last reassessment. In 2023, 51.9% of commercial (Class 5) appeals won a reduction — 14 of 27, counting each appeal once — with a typical (median) assessed-value cut of about $13,690. Because the commercial pool is modest, those figures are best read as the overall picture rather than a class-by-class science; one-story commercial buildings were the most common category.

For commercial and multi-family property, the Assessor leans on the income approach — estimating value from the net income a building generates. That's an advantage for owners, because your appeal can rest on hard financial evidence:

• Actual rents (the rent roll). If your building earns less than the Assessor assumed, that gap supports a lower value.
• Operating expenses and vacancy. Real expenses and genuine vacancy reduce net income — and value.
• Capitalization rate. The right cap rate for your property type and risk can move the number meaningfully.

Commercial property is also assessed at 25% of market value (versus 10% for homes), so the assessed-value stakes per property are higher — which is why a documented income-and-expense package is worth assembling for the Board of Review.

What a Reduction Is Worth in River Forest

River Forest applies a single composite tax rate townwide — about 9.4%, on the lower end for Cook County thanks to a strong tax base. The rate is modest, but because values (and the cuts won on appeal) are high, the dollars are still meaningful:

For commercial property the dollars are larger: at the 2023 typical winning commercial cut of about $13,690, the annual saving would be roughly $3,900. At the typical residential cut (~$7,690), closer to $2,190. Estimates exclude exemptions; because the 2026 value generally holds for three years, a reduction compounds across the cycle.

What Wins an Appeal

For a home, a successful appeal usually rests on correct property characteristics (square footage, room and bath counts, age, condition), comparable values (similar nearby homes or sales that don't support your number), and uniformity (comparable homes assessed more favorably than yours). For commercial property, the core is a complete income-and-expense package — rent roll, leases, operating statements — plus vacancy evidence and support for the right capitalization rate.

In both cases, document condition issues with photos, and make sure you're receiving every exemption you qualify for (Homeowner, Senior, Senior Freeze, Veterans, Disabled Persons); exemptions don't change your assessment, but they lower what you owe.

How to File at the Board of Review

1. Watch for River Forest's 2027 windows — confirm the dates on the deadlines page.
2. Gather your evidence — comparable sales or assessments for a home; rent roll, leases, and operating statements for commercial.
3. File your River Forest appeal with the Board of Review before its deadline. You can pre-file to be notified when the window opens.
4. Plan ahead for annual appeals if you'd rather act in a future year.

Not sure whether your number is out of line? Review the signs your property is overassessed, or confirm your window on our deadlines page.