O'Leary-Guth Law Office, S.C.

O'Leary-Guth Law Office, S.C. Trust, Estate, Tax and Business Counselors. We provide estate planning, business, real estate, tax

We have been providing families and businesses with expert legal advice for over 30 years. Our team of attorneys, paralegals, and accountants have the skills required to assist our clients with guidance, planning, and advice on a variety of legal matters, including estate planning, probate, tax, and business law.

We are honored to announce that three OLG attorneys have once again been recognized this year in numerous categories by ...
08/24/2026

We are honored to announce that three OLG attorneys have once again been recognized this year in numerous categories by Best Lawyers. Inclusion in The Best Lawyers in America® and Best Lawyers: Ones to Watch® in America is determined solely through a comprehensive peer-review survey. For over 40 years, Best Lawyers has been esteemed by both legal professionals and the public as a premier benchmark for legal integrity and distinction in the United States. Being recognized by Best Lawyers is a testament to exceptional practice. We are proud to once again be recognized.

The Wisconsin Legal 250 published this week recognizes the most influential attorneys across Wisconsin’s legal landscape...
07/28/2026

The Wisconsin Legal 250 published this week recognizes the most influential attorneys across Wisconsin’s legal landscape.

This week the Thiensville-Mequon Rotary Club surprised Attorney Maureen O'Leary Guth with the club’s annual Honorary Pau...
07/02/2026

This week the Thiensville-Mequon Rotary Club surprised Attorney Maureen O'Leary Guth with the club’s annual Honorary Paul Harris Award!

What a great night. Over $1.5M raised for neuroscience research at this year’s Imagine More Dinner benefiting the Medica...
06/24/2026

What a great night. Over $1.5M raised for neuroscience research at this year’s Imagine More Dinner benefiting the Medical College of Wisconsin’s Neuroscience Research Center!

We are thrilled to announce, for the third consecutive year, the Milwaukee Business Journal has named O'Leary-Guth Law O...
06/22/2026

We are thrilled to announce, for the third consecutive year, the Milwaukee Business Journal has named O'Leary-Guth Law Office, S.C. as a Best Places to Work in greater Milwaukee! It is a short list of only 20 businesses recognized in our category, and we are honored to be included. Thank you to our incredible team for creating the best possible environment where people want to work!

Law Dog Claire stays busy checking on her team at the office each day. But she is never too busy to offer the reminder t...
06/05/2026

Law Dog Claire stays busy checking on her team at the office each day. But she is never too busy to offer the reminder to everyone to take breaks and drink plenty of water this summer.

All in a hard day’s work for Attorneys Azinger and Byrne (while also raising money for charity).
06/02/2026

All in a hard day’s work for Attorneys Azinger and Byrne (while also raising money for charity).

Congratulations to Attorney Leah Moyer on her graduation from Marquette University Law School. Leah was part of the OLG ...
05/27/2026

Congratulations to Attorney Leah Moyer on her graduation from Marquette University Law School. Leah was part of the OLG team as a law student and now joins us as a full-time attorney on our estate planning team.

Another great performance by Whitefish Bay High School Theatre doing The Complete Works of William Shakespeare (Abridged...
05/18/2026

Another great performance by Whitefish Bay High School Theatre doing The Complete Works of William Shakespeare (Abridged) and Six! The quality of these performances is simply amazing. Keep it up!

Congratulations Attorney Jeremy Guth for his inclusion on today's Notable Leaders in Law list published by BizTimes Milw...
04/20/2026

Congratulations Attorney Jeremy Guth for his inclusion on today's Notable Leaders in Law list published by BizTimes Milwaukee

Attorney Jeremy Guth is a shareholder at Mequon-based O’Leary-Guth Law Office S.C. In addition to his legal work, he leads the firm’s mentorship programs,

Address

1251 W. Glen Oaks Lane
Mequon, WI
53092

Opening Hours

Monday 8:30am - 5pm
Tuesday 8:30am - 5pm
Wednesday 8:30am - 5pm
Thursday 8:30am - 5pm
Friday 8:30am - 5pm

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