Now live: BerwynBerwyn: this year's window has closed

Berwyn homeowners: see if your assessment is too high.

Type your address and see, for free, if your home is assessed higher than the homes around it. Every number comes from Cook County’s own records.

Covers Berwyn. Free to check. Free to file.

The 2026 dates for Berwyn

Cook County sets one window per township. Miss it and you wait a year.

Assessor opened
May 20, 2026
Assessor: file by
July 6, 2026
Evidence due
With filing
Board of Review opened
August 31, 2026
Board of Review: file by
September 29, 2026
Evidence due
October 9, 2026

Source: Cook County Board of Review 2026 published schedule (group 2), checked 2026-09-20.

A real Berwyn home

3442 MAPLE AVE, BERWYN, IL 60402

$4,890

estimated saving per year

County’s value
$390,010
Evidence
Neighbors’ records
Launch price

$50flat for the full filing-ready packet, one time.

The Berwyn streets where the most homes are assessed above similar homes

Share of homes on each street that our free check flags for 2026, streets with 150 or more homes. Is yours one of them?

  • Wisconsin Ave44%of 462 homes
  • Kenilworth Ave43%of 557 homes
  • Maple Ave43%of 461 homes
  • East Ave41%of 547 homes
  • Elmwood Ave41%of 479 homes
  • Gunderson Ave41%of 470 homes
  • Oak Park Ave39%of 519 homes
  • Home Ave39%of 507 homes

How to appeal in Berwyn, step by step

  1. Step 1

    Type your address

    We find your home in the county's records. No account, no card.

  2. Step 2

    See if you have a case

    We compare your assessment with similar homes nearby. If it's fair, we say so.

  3. Step 3

    Get your packet

    Comparable homes, the numbers, a filing checklist. One flat price, shown first.

  4. Step 4

    File in your window

    On the county's website. Free. We'll show the date when the county publishes it.

  • No lawyer needed
  • You keep every dollar you save
  • Every number from Cook County records

Berwyn appeal questions

The short answers. If yours isn’t here, email us and a person replies the same day.

When is the Berwyn property tax appeal deadline?

This year's Berwyn window has closed. Watch your address and we'll email you before next year's opens.

Do I need a lawyer to appeal?

No. Homeowners appealing their own home can file themselves, for free, on the county's website, and it's easy: every Morganwell report includes a step-by-step filing guide. Morganwell is not a law firm; we build the evidence and guide you, and you file it in your own name.

What does it cost?

The check is free. While we launch Berwyn, every full packet is $50 flat, one time. Never a share of your savings. Filing with the county is free. No outcome is guaranteed.

What's the difference between Morganwell and filing with the county?

Filing is the county's process and it's free. Morganwell is the evidence: we read the county's own records and show whether comparable homes are assessed lower than yours, in the form the county asks for, plus a step-by-step guide so filing it yourself is easy.

Ten seconds to check.

Ten seconds to check. Five minutes to file. Then you wait for the letter.