The two numbers are $640,000 and $515,000, and each spouse is sure of theirs. Disputed property value in an Illinois divorce usually starts this way. One side quotes a listing site, the other a neighbor’s sale. Before anyone pays for an expert, three records already exist. They will tell you which number is closer, and whether either one is worth defending.
- Which three records to request, where each one lives in Cook County, and what each can and cannot prove
- The tells inside each record that point to a soft number on the other side
- When the file needs an independent appraisal, and what a broker should hand over in the meantime
Why Disputed Property Value Gets Settled on Paper First
Illinois divides marital property in just proportions, not an automatic half. That comes from 750 ILCS 5/503, and the court applies it asset by asset. The house is often the largest line on the marital balance sheet, and the court has to land on a value before it can divide anything.
When spouses ask the judge to decide property, each one completes a financial affidavit with supporting documents, as Illinois Legal Aid Online explains. The value on that affidavit has to come from somewhere. Your job, early, is to find out where.
Three records answer that question at almost no cost. Each was created for a different purpose, so none is a value opinion you can take to trial. But together they show you the shape of the dispute. And they do it before you spend a dollar on an independent divorce appraisal.
Record One: The Assessor’s Property Record
Start with the Cook County Assessor. The office values about 1.8 million parcels, and it says plainly that it does not value them one at a time. It uses mass appraisal, a regression model that relates your client’s house to the sales around it. One-third of the county gets reassessed each year on a three-year cycle. The Board of Review then finalizes values after appeals.
Pull the property detail page by PIN. It shows the estimated market value, the assessed value, the property class, and the year of the next reassessment. It also shows an exemption history and a characteristics table: square footage, baths, basement, garage, age. Read the market value line, not the assessed line. For most homes the assessed figure is a fraction of the market estimate. A spouse who quotes it as the value misread the page.
A value reduced at the Board of Review means someone argued, in writing, that the house is worth less. If that same spouse now claims it is worth more, you have the exhibit. A table showing three baths and a full basement when the house has two and a crawl space means the record is wrong. An unpermitted addition or a finished lower level can push the gap the other way. Two homeowner exemptions across two properties is a separate problem your client should hear about now.
Consider a hypothetical Evanston bungalow. The Assessor’s estimated market value reads $480,000. One spouse claims $640,000 and the other claims $515,000. The record proves neither number, but it puts the burden where it belongs. The $640,000 figure sits $160,000 above a model built on nearby sales, so that spouse owes you a report.
Record Two: Any Prior Appraisal on the Property
If either spouse bought, refinanced, or opened a home equity line during the marriage, a lender appraisal exists. Ask for it in discovery, and ask the lender if the spouse cannot find it. It answers a lender’s question as of a lender’s date, so the value itself is stale. The rest of the report is not.
A prior appraisal gives you a measured square footage, a sketch, and interior photos. It also gives a condition rating, the updates the owner claimed at the time, and the comparable sales an independent appraiser chose back then. If one spouse says the kitchen was gutted in 2019, the 2021 refinance photos settle it. Under USPAP, the standard every licensed appraiser works to, the report must state its effective date and intended use. Hold it to that date. Then it is a record of what the house was, not an argument about what it is worth today. Our piece on the date of value in a divorce appraisal explains why that distinction moves settlements.
Three things deserve a second look. A value that lands exactly at the number the loan needed. A property described differently than it stands today, which can mean work done since, or work never done. And a report dated after a deed changed hands, because a quitclaim transfer mid-case changes which date the court cares about. When I get a prior appraisal in a new assignment, I do not adopt its value. I use it to check what changed and to confirm the square footage.
Record Three: Broker Price Opinions and Market Analyses
A broker price opinion, or the comparative market analysis most sellers see, is an agent’s estimate of what a home could list or sell for. In a divorce file they show which comparables each side leans on and whether a range is a listing range or a value. A pricing tool built to win a listing will not survive an opposing expert, which is why a divorce home appraisal and a price opinion land so differently in front of a judge.
If you are the broker being asked for that CMA, here is what makes yours useful instead of a liability. Date it. State on the first page that it is a pricing analysis and not an appraisal. List every comparable with its closed date, closed price, and any seller concessions you know about. Say whether you walked the interior or worked from photos. Then keep your file. In a contested case you may get a subpoena for it, and a range you stretched for one spouse is a bad afternoon under oath. A CMA that shows its work gets read alongside the appraisal. One that does not gets read against you.
For counsel, the practical move is to request both sides’ opinions at once and lay the comparables next to each other. If both agents used the same four sales and landed $90,000 apart, the difference is in the adjustments. That is an appraisal question. If they used different sales, someone is shopping for comps.
When the Paper Runs Out and the File Needs an Appraisal
The three records frame the dispute. They rarely end it. Order an independent appraisal when the gap survives the paper. Order one when the equity is large enough that a five percent error costs real money, or when a buyout or refinance depends on the number. The same goes for an unusual property, a rental unit, or a case likely to reach a hearing. A retrospective date, such as the date of marriage for a premarital equity claim, is its own reason. None of the records will give you one.
Online estimates do not fill the gap. In April 2026 the Appraisal Standards Board adopted Advisory Opinion 41 on automated valuation models, regression software, and generative AI in appraisal work. An appraiser who uses those tools still owns the result and has to support it. A spouse citing a website estimate has none of that behind the number.
Cook County adds a local wrinkle. A block in Oak Park, a two-flat in Hyde Park, and a bungalow in Norwood Park each sit in a market that moves on its own schedule. A report built for Cook County reads those markets and supports each adjustment. Our article on what makes an appraisal defensible on the witness stand goes through that test in detail.
Pull the Records Before the First Settlement Conference
The sequence is simple. Pull the Assessor’s property record on day one; it costs nothing and needs only a PIN. Put prior appraisals and any broker opinions in your first document request. Ask the lender directly if the spouse comes up empty. Lay the three records side by side and see where the gap lives: the square footage, the condition, the comparables, or the date. Then decide whether an appraisal is needed, and if so, agree the effective date with opposing counsel before either side orders one.
Two Numbers on the Table and No Way to Choose?
PahRoo prepares independent divorce appraisals for contested marital property across Cook County and the Chicago area, built to be disclosed, deposed, and defended.
Frequently Asked Questions
What documents should a family lawyer request when property value is disputed?
Request the county assessor’s property record, any prior purchase, refinance, or home equity appraisal, and any broker price opinion or comparative market analysis either spouse relied on. Together they show where the two numbers came from and whether an independent appraisal is needed.
Can a Cook County assessment be used as market value in a divorce?
Not as a value opinion. The Cook County Assessor values property by mass appraisal for tax purposes and does not inspect the individual home. The estimated market value is useful background, and the characteristics table and appeal history can expose errors, but it should not replace an appraisal when value is contested.
Is a broker price opinion the same as an appraisal?
No. A broker price opinion or comparative market analysis is a pricing tool prepared by a real estate agent, usually to set a listing price. An appraisal is an independent opinion of value developed under USPAP by a licensed or certified appraiser, with a stated effective date, intended use, and supported adjustments.
Can a prior refinance appraisal set the value in a divorce?
Rarely. The value in a refinance appraisal applies to the lender’s effective date, which is usually well before the divorce. The report is still valuable for its measured square footage, sketch, photos, condition notes, and comparable sales, which document what the house was on that date.
When should a divorce attorney order an independent appraisal?
When the gap between the spouses survives the three records, when the equity is large, when a buyout or refinance depends on the number, when the property is unusual or includes a rental unit, when a past effective date is needed, or when the case is likely to reach a hearing.
Appraisal Support for Contested Marital Property in Cook County
The records above are where PahRoo starts too. Since 1999 the firm has prepared divorce, estate, and litigation appraisals across Cook County and the wider Chicago area, along with Dallas-Fort Worth, Philadelphia, Phoenix, and Naples. Michael Hobbs, MAI, SRA, signs every report and is available for deposition and testimony. See our residential appraisal services, or contact us with the PIN and the records you already have.