Harrison Vaughn Development Advisory & Execution

Harrison Vaughn Development Advisory & Execution

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I work with municipalities, developers, and owners who are serious about ex*****on—not ideas—to deliver real estate and capital projects that actually work. Developing local communities through Real Estate Development, Property Revitalization and Reconstruction, Sales and Leasing.

04/21/2026

While I am still serving as a Program and Project Manager for several Development Projects and still functioning as a Six Sigma Black Belt to build out a QMS for a Manufacturing firm, I cannot neglect the discoveries I have made in the Cook County Mass Appraisal Model.

I have leveraged the same tools I used in my Engineering days of corporate to objectively identify inconsistencies in Cook County Property Tax Assessments.

Here's the fact that has been proven by the data:

Cook County Property Tax Assessments are inconsistent. PERIOD!!!

The data simply doesn't lie...

Contact me for a statistical analysis.

04/21/2026

Things are happening VERY FAST on the Property Tax Analyses I am doing. Thank you to everyone who has reached out to me and requested an evaluation.

As a reminder to all, I am using statistics to complete Certificate of Errors and Appeals. In addition, I am doing predictive analytics for developers as part of the business case and feasibility work.

The data simply doesn't lie.

Contact me for an analysis.

Mortgage crisis of the early 2000s comes back to haunt Chicago-area homeowners 04/20/2026

Mortgage crisis of the early 2000s comes back to haunt Chicago-area homeowners Homeowners who thought their second mortgage was forgiven more than a decade ago are shocked when a debt collector revises it — with heavy interest and fees.

04/17/2026

Don't let those who don't fully understand data and statistics convince you that there is nothing you can do about your Cook County property tax bill.

Vaughn has more than 25 years of highly unique experience in Engineering and Data Science, and has "cracked the code" on the Cook County Property Tax Assessment errors.

Contact Vaughn for more information on how you can OBJECTIVELY LOWER YOUR PROPERTY TAX BILL, and APPLY FOR A REFUND!!!

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Telephone

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Homewood, IL

Opening Hours

Monday 9am - 5:30pm
Tuesday 9am - 5:30pm
Wednesday 9am - 5:30pm
Thursday 9am - 5:30pm
Friday 9am - 5:30pm