General Information

Year founded: 1973
This is the year the firm (or its earliest predecessor entity) was founded.
Logo for Giarmarco, Mullins & Horton, P.C.


Content is provided by the firm.

Founded 40 years ago, Giarmarco, Mullins & Horton, P.C. ranks as the 12th largest law firm in Michigan. With over 60 attorneys, GMH is a full-service law firm offering our clients a diverse range of capabilities and specialties.

GMH is known for:
  • Excellence of work in complex and challenging matters
  • Experience of over 60 attorneys
  • Expertise in 36 areas of the law
  • Results oriented
  • Value in our service
GMH has been chosen as Best Law Firm by US News & World Report:
  • As Best Place to Work by Fortune and Detroit Free Press
  • As Crain’s Detroit Business, “Cool Place to Work”
  • Best Lawyers 2012, Super Lawyers and DBusiness Top Lawyers
Our practice areas span a broad range of legal experience, allowing us to serve our clients when and where they need us:
  • Estate & Trust
  • Municipal, Government, Schools & Education
  • Business/Corporate
  • Health Care
  • Medical Malpractice Defense
  • Business Litigation
  • Family Law
  • Real Estate
  • Tax Law


Giarmarco, Mullins & Horton, P.C. is metro ranked in 17 practice areas. Best Law Firms rankings are based on a rigorous evaluation process.

Read how Best Law Firms ranks firms

Metro Rankings

Troy, MI
Tier 1 for Closely Held Companies and Family Businesses Law
Tier 1 for Commercial Litigation
Tier 1 for Education Law
Tier 1 for Family Law
Tier 1 for Health Care Law


Metro Rankings

Troy, MI
Tier 1 for Closely Held Companies and Family Businesses Law
Tier 1 for Commercial Litigation
Tier 1 for Education Law
Tier 1 for Family Law
Tier 1 for Health Care Law
Tier 1 for Medical Malpractice Law - Defendants
Tier 1 for Professional Malpractice Law - Defendants
Tier 1 for Real Estate Law
Tier 1 for Trusts and Estates
Tier 2 for Corporate Law
Tier 2 for Family Law Mediation
Tier 2 for Litigation - Labor and Employment
Tier 2 for Litigation - Mergers and Acquisitions
Tier 2 for Litigation - Trusts and Estates
Tier 3 for Bet-the-Company Litigation
Tier 3 for Litigation - Real Estate
Tier 3 for Mergers and Acquisitions Law

Practice Areas

The below are areas of legal specialty volunteered by the firm and do not designate a specialty in which a Best Law Firms ranking is held.
  • Commercial Litigation
  • Corporate Law
  • Education Law
  • Employment Law - Management
  • Family Law
  • Health Care Law
  • Labor Law - Management
  • Litigation - Labor and Employment
  • Litigation - Trusts and Estates
  • Medical Malpractice Law - Defendants
  • Professional Malpractice Law - Defendants
  • Real Estate Law
  • Trusts and Estates

Individuals Recognized in The Best Lawyers in America®

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Client Comments

All client comments represent the opinions of the people who provided them. All potential clients are urged to remember that no two cases are ever completely alike and that the result in one case does not guarantee a similar result in another case.
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Awards are self-reported by firms and are not verified by the Best Law Firms rankings.
  • Best Place to Work Fortune
  • Crains Detroit Business Cool Place to Work
  • Healthty Place to Work Crains Detroit Business

Main Location

Troy, MI
Columbia Center, Tenth Floor
101 West Big Beaver Road
Troy, MI 48084-5280
United States
248-457-7000 Call our Troy, MI location at 248-457-7000 Get Directions Get directions to our Troy, MI location

Management and Personnel

Information Systems Director
Ashley Brown
Chief Operating Officer
Rosemary Gilchrist
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