Mastering the Comparative Market Analysis (CMA) for the Illinois Real Estate Exam

Last updated: April 2026

For aspiring real estate brokers in the Prairie State, understanding how to accurately evaluate property values is a fundamental skill. As you prepare for your licensing exam, mastering the Comparative Market Analysis (CMA) is non-negotiable. A well-constructed CMA not only fulfills your fiduciary duty of care to your clients but is also heavily tested by the Illinois Department of Financial and Professional Regulation (IDFPR).

This comprehensive guide will break down the regulatory frameworks, mathematical formulas, and practical applications of CMAs in Illinois. For a broader overview of the exam structure, be sure to review our Complete Illinois Exam Guide.

Illinois Law: The CMA vs. The Appraisal

One of the most critical distinctions you will be tested on is the legal difference between a CMA and a formal real estate appraisal. Under the Illinois Real Estate Appraiser Licensing Act, only a licensed or certified appraiser may perform an appraisal. Real estate brokers perform CMAs (or Broker Price Opinions - BPOs).

To remain compliant with Illinois law, any CMA presented to a client must include a specific disclosure. You must clearly state that the document is a comparative market analysis, not an appraisal, and that it was prepared by a licensed real estate broker, not a licensed appraiser. Failing to make this distinction is a violation of the Illinois Real Estate License Act of 2000 and is a frequent trick question on the state exam.

The 3 Core Components of a CMA

A successful CMA relies on comparing a "subject property" (the home you are trying to price) with similar properties ("comparables" or "comps") in the same market area. When selecting comps, Illinois brokers generally look at three categories of listing data:

1. Recently Sold Properties

Sold properties are the strongest indicators of current market value because they represent what a willing buyer actually paid to a willing seller. For exam purposes, ideal comps should have closed within the last three to six months and be located within the same neighborhood (ideally within a 1-mile radius in suburban/urban areas).

2. Active Listings

Active listings represent the current competition. While they do not show what a property will ultimately sell for, they show what buyers are currently comparing your subject property against. Active listings help establish the upper limit or "ceiling" of your pricing strategy.

3. Expired Listings

Expired listings are properties that failed to sell during their listing period. These are incredibly valuable for a CMA because they demonstrate the market's boundaries. They tell a seller, "If we price the home at this level, it will likely be rejected by the market."

Relative Weight of Comparable Types in CMA Pricing (%)

The Golden Rules of CMA Adjustments: CBS and SBA

No two properties are exactly alike. Therefore, when performing a CMA, a broker must make financial adjustments to account for differences in square footage, bedrooms, bathrooms, and amenities.

Crucial Exam Rule: You never adjust the value of the subject property. You only ever adjust the value of the comparable property to make it match the subject.

To remember how to make these adjustments on the exam, memorize these two acronyms:

CBS: Comparable Better, Subtract

If the comparable property has a feature that the subject property lacks, you must subtract the value of that feature from the comparable's price.

Scenario: Your subject property has 3 bedrooms. The comparable property recently sold for $350,000 and has 4 bedrooms. In this market, a bedroom is valued at $10,000.
Action: The Comparable is Better (it has an extra bedroom). Therefore, you Subtract.
Math: $350,000 - $10,000 = $340,000 adjusted value.

SBA: Subject Better, Add

If the subject property has a feature that the comparable property lacks, you must add the value of that feature to the comparable's price.

Scenario: Your subject property has a finished basement. The comparable property recently sold for $350,000 and has an unfinished basement. A finished basement is valued at $20,000.
Action: The Subject is Better. Therefore, you Add.
Math: $350,000 + $20,000 = $370,000 adjusted value.

Integrating the CMA into the Real Estate Transaction

Understanding the CMA extends far beyond just winning a listing presentation. Accurate pricing sets the foundation for the entire transaction lifecycle in Illinois.

For example, if a broker poorly prices a home significantly above market value based on a flawed CMA, the property may face an appraisal shortfall later. This can severely delay the Illinois escrow process timeline, causing panic for both buyers and sellers. Furthermore, accurately priced homes lead to smoother closings, making the final settlement statement walkthrough a stress-free experience rather than a renegotiation battleground.

Illinois CMA Exam Prep Strategy

When studying for the Illinois state exam, expect to see 3 to 5 questions directly related to CMAs, BPOs, and appraisals. You will likely be given a word problem asking you to calculate the adjusted price of a comparable using the CBS/SBA rules.

To ensure you are fully prepared for the math portion of the exam, we highly recommend utilizing practice exams that drill these specific adjustment scenarios. Check out our guide on the best study materials and resources to find practice tests tailored to Illinois real estate math.

Frequently Asked Questions (FAQs)

Can an Illinois real estate broker charge a separate fee for a CMA?

Yes. Under the Illinois Real Estate License Act, a licensed broker may charge a fee for providing a Broker Price Opinion (BPO) or a CMA. However, in practice, CMAs are typically provided for free as a marketing tool to secure a listing agreement.

What mandatory disclaimer must be included on an Illinois CMA?

Illinois law requires that any CMA or BPO include a disclosure stating that the document is an estimate of probable selling price, is not an appraisal, and was not prepared by a state-licensed or certified real estate appraiser.

How far back should I look for sold comps in an Illinois market?

Ideally, you should use properties that have sold within the last three to six months. In rapidly changing markets (like the Chicago suburbs during peak season), 90 days is preferred. In slower, rural Illinois markets, you may need to look back up to 12 months to find adequate comps.

Do I adjust the price of the subject property or the comparable property?

You always adjust the comparable property, never the subject property. The goal is to make the comparable look exactly like the subject property to determine what the comparable would have sold for if it were identical to the subject.

Can an Illinois Residential Leasing Agent perform a CMA?

No. An Illinois Residential Leasing Agent license strictly limits the licensee to residential leasing activities. Performing a CMA to determine the sale value of a property falls outside their scope of practice and requires a Broker or Managing Broker license.