Schaumburg Township 2025 Appeal Results: 17.3% of Home Appeals Won — Commercial Led, Condos Lagged

Schaumburg Township — Schaumburg, Hoffman Estates, Streamwood, Hanover Park, Roselle, and parts of Elk Grove Village — pairs large single-family and condominium neighborhoods with one of the densest commercial cores in the suburbs, anchored by Woodfield Mall and the Woodfield office corridor. That split shows up clearly in the 2025 reassessment results: residential filings dominated by volume, but the biggest dollar reductions came from commercial property.

Overall Results

For the 2025 tax year — Schaumburg's reassessment year — the Cook County Assessor decided 8,796 homeowner appeals in the township, counting each appeal once (a condo building's units, decided together, are one appeal). Of those, 1,522 received a "Change" (the assessed value or classification was adjusted in the owner's favor), a success rate of 17.3%. Across the winning appeals of every property type, assessed values fell by roughly $88.3 million in total.

The Average vs. the Median

Two numbers frame the real story. Among winning appeals, the average reduction was about $48,600 in assessed value — but the median was only about $2,800. That large gap means most winning appeals (mostly homes) produced modest cuts, while a small number of very large commercial reductions pulled the average sharply upward. In a regional commercial hub like Schaumburg, the biggest wins are concentrated in income property.

Success Rate by Property Type

The township-wide average masks a wide spread — from 6.9% for condo appeals to 42.5% for commercial (multi-family reached 47.6%, but on just 21 appeals):

Counted by appeal: the county decides a condo building's units, or a multi-parcel commercial filing, together, and each such case counts once. "Avg AV cut" is the average assessed-value reduction among winning appeals in each group; *a condo appeal usually covers a whole building, so its cut is the building's (about 6.7% of its value). Multi-family is a very small sample (21 appeals), so its rate is directional only. A small commercial-condominium class (5-99, 27 appeals) showed an unusually high success rate, likely reflecting a blanket adjustment, and isn't representative of commercial appeals generally.

The Condo Paradox — Sharp in Schaumburg

Condo appeals won the least often of any property type: 11 of 160, just 6.9%. (Most of Schaumburg's condo filings came building by building, so its many thousands of condo units added up to 160 appeals.) Condo values are typically set consistently building-by-building, which leaves little room for a single unit to argue it's mispriced relative to its neighbors. The condo appeals that succeed almost always lean on sales within the same association and documented unit-specific differences — floor, view, condition — rather than broad neighborhood comparisons. Townhomes (Class 2-95) also lagged, at 10.4%.

Commercial Led — and the Reductions Were Large

The strongest robust result came from commercial property: 42.5% of commercial appeals won (243 of 572), with an average winning cut of about $294,461 in assessed value — by far the largest of any property type, reflecting Schaumburg's concentration of regional retail, big-box, and office property. Within that group, industrial property (Class 5-93) won 56.1% on 148 appeals and one-story commercial (5-17) won 34.8% on 164. Income property is valued largely on what it earns, so a documented income-and-expense case — rent roll, expenses, vacancy, and the right capitalization rate — gives the Assessor concrete grounds to lower the value. Multi-family owners won a similar share, but on just 21 appeals, so that figure is directional.

Homes Landed in the Middle

Single-family homes — 8,636 appeals — won 17.5%, about the homeowner average, with an average cut of about $3,221. By home type, the spread was wide: one-story houses (Class 2-03) won 21.0% and split-levels (2-34) 18.5%, while the larger two-story classes landed in the mid-teens. For homes, the winning evidence is comparable sales and accurate property characteristics: confirm the Assessor's record of your home's size, age, and condition, and line up recent sales of similar nearby houses.

What These Results Mean for You

• Reductions happen, but they're not automatic. About 1 in 6 homeowner appeals won, and the spread by property type is wide.
• Commercial owners have the strongest case to make — the highest rate of any large group and, by far, the largest dollar reductions.
• Condo owners need a sharp, association-specific case. The 6.9% rate means a generic filing almost never lands.
• Don't read "No Change" as the final word. The Board of Review offers a separate, second-level appeal after the Assessor.

You Can Appeal Every Year — the 2026 Window Is Open

2025 was Schaumburg's reassessment year, so its values were freshly set and generally carry forward until the next reassessment in 2028. But you don't have to wait — Cook County lets you appeal your assessed value every year. Schaumburg's 2026 Assessor window is open October 6 to November 19, 2026, and filing again is especially worth doing if you didn't appeal in 2025 or your result didn't go far enough. Track the township's current window on our deadlines page.

For context on dollars: Schaumburg's composite tax rate runs around 10%. As a rough guide, a $5,000 assessed-value cut translates to roughly $1,500 a year in tax savings; a large commercial reduction can mean tens of thousands. Estimates exclude exemptions and vary by tax code.