• Skip to main content
  • Skip to header right navigation
  • Skip to site footer

Call us today for help:  708-478-0047

Contact us for a real estate tax analysis and consultation


Maher, Brannigan & Heywood, P.C. logo.

Maher, Brannigan & Heywood, P.C.

Call Us
  • About Us
  • Attorneys
    • Frank Maher, Attorney (Retired)
    • Daniel J. Heywood, Attorney
    • John M. Brannigan, Attorney
  • Staff
  • Real Estate Taxation
  • Resources
    • Insights & News
    • FAQ
  • Case Results
  • Contact Us
A daytime view of the Chicago skyline.

John M. Brannigan, Attorney

Senior Partner

John is a senior partner at Maher, Brannigan & Heywood, P.C. where he limits his practice to matters relating to real estate taxation.

Mr. Brannigan graduated from the University of Notre Dame in 1990. He obtained his Bachelor of Arts degree while majoring in English and Philosophy. John received his Juris Doctor from DePaul University in 1995.

Professional portrait photo of John Brannigan.

From 1990-1995, John worked as a real estate tax paralegal and tax consultant at a nationwide firm that concentrated its practice to real estate taxation matters. He remained with the firm after graduation from law school. As an associate attorney, Mr. Brannigan prepared, filed and negotiated real property assessment complaints before the various in-state and out-of-state County Assessor’s Office, Boards of Review and post-payment Review Boards, Courts and Tribunals.

In 1998, John became a partner with Maher & Brannigan, P.C. As a partner, Mr. Brannigan was responsible for the daily operations of the firm and was responsible for the preparation, filing and negotiation of real property assessment complaints before the Cook County Assessor’s Office, Will County Assessor’s levels, Cook County Board of Review, Will County Board of Review, Circuit Court of Cook County and State of Illinois Property Tax Appeal Board.

In 2013, the firm became Maher, Brannigan & Heywood, P.C., when Mr. Daniel J. Heywood joined the firm as a partner.

John is licensed to practice law in Illinois (May, 1996), Arizona (October, 1995 – presently inactive) and Washington, D.C. (November, 1996 – presently inactive).

Mr. Brannigan grew up in Chicago’s Beverly neighborhood and in Wilmette, Illinois, where he graduated from Loyola Academy. John now resides with his family in Orland Park, Illinois.

Our Firm By the Numbers

30+

Years IN BUSINESS

140 yrs +

combined experience

10000+

PARCELS REPRESENTED

$100MM+

OF PROPERTY TAX SAVINGS

Contact Us Today

All consultations are complimentary and come with no obligation.  If you want to find out if you are paying your fair share of property taxes, please do not hesitate to contact Maher, Brannigan & Heywood, P.C. today!

Contact Us

Maher, Brannigan & Heywood, P.C.

Phone: 708-478-0047
Fax: 708-478-0160

11520 West 183rd Street, SE
Orland Park, IL 60467

Disclaimer: The Maher, Brannigan & Heywood, P.C. (“MBH, P.C.”) website is intended for informational & advertising purposes only. Nothing in or on the site is to be considered as either creating an attorney-client relationship between the reader and MBH, P.C. or as rendering of legal advice for any specific matter. Readers are responsible for obtaining such advice from retained legal counsel.

Copyright © 2025 | Maher, Brannigan & Heywood, P.C. | All Rights Reserved | Privacy Policy | Disclaimer & Terms of Use | Attorney advertising material