847-577-2227 | 312-777-3773


focused on lasting relationships

Drost Kivlahan McMahon & O’Connor has been establishing lasting relationships with individuals and businesses since 1987.

Since our inception in 1987

We have focused on building a high level of trust and lasting relationships with each and every one of our clients. Today, DKMO is staffed by sixteen attorneys and a diverse team of talented administrative staff. Our office in downtown Arlington Heights serves thousands of individual and corporate clients throughout Illinois.

What’s New at DKMO

Thank you to all who nominated Drost Kivlahan McMahon & O'Connor as a Daily Herald 2021 Readers’ Choice Top Pick, Best Law Firm and Best Lawyer! Voting continues for the 2021 Readers’ Choice Daily Herald Best of the Best through July 2nd, 2021.


DKMO has been monitoring the spread of the Coronavirus (COVID-19) and is taking steps to protect our employees, clients, and the community at large.

For more on our response plan, see here.

DKMO New Partners

Drost Kivlahan McMahon & O’Connor LLC (DKMO) is pleased to announce Rhonda S. Jensen and Ernest L. Rose as the firm’s newest partners.

For more information on this announcement, see the press release here.

ABA Well-Being Pledge

DKMO is proud to be among the first law firms in the nation to sign the American Bar Association’s Well-Being Pledge. This initiative aims to improve mental health in the legal profession and increase resources for lawyers struggling with substance abuse. DKMO is has resigned this pledge for 2021.

For more information on the pledge, visit the American Bar Association website.

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Please note that testimonials or endorsements found at this website do not constitute a guarantee, warranty, or prediction regarding the outcome of any legal matter.

Send us a message

With over 30 years of experience, we look forward to building a trusting partnership together.

See if DKMO might be a good fit for your legal needs.

To email us, please contact us at



11 South Dunton Avenue
Arlington Heights IL 60005
Telephone: 847-577-2227
Telephone: 312-777-3773
Real Estate Fax: 847-577-3897
Fax: 847-577-2204

Click here for directions

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