- 2026 FHA loan limit, DuPage County (one-unit home)
- $541,287
- 2026 conforming loan limit, DuPage County (one-unit home)
- $832,750
- DuPage County median sale price, Q2 2026 · Illinois REALTORS
- $460,000
FHA limit: HUD FHA mortgage limits, checked October 8, 2026. Conforming limit: FHFA conforming loan limits, checked October 8, 2026. Sale price: Illinois REALTORS Q2 2026 report, checked October 8, 2026. This price covers all of DuPage County. It is not an Oak Brook price.
Mortgage loans in Oak Brook, IL
- Corporate headquarters campuses and golf-course subdivisions.
Where income arrives as distributions, K-1s, or asset draws rather than a W-2, the constraint is documentation method, not creditworthiness. Bank statement and asset depletion programs exist for exactly that gap.
Part of the village extends into Cook County.
Programs commonly used in Oak Brook
This is what tends to fit the price point and property type here, not a list of everything that exists. Which one is right for you depends on your file.
Have an offer on a property in Oak Brook?
Send the Loan Estimate. You will get back what is worth questioning on it, including “nothing, this is a good offer,” when that is the answer.