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Mary-Jo Gilsdorf

Arbitration Attorney at Glen Mills, PA

5.0   4 reviews
  • State Years
    New Jersey - NJ 34 years
    Pennsylvania - PA 34 years
    Dist. of Columbia - DC 33 years
  • Licensed for 34 years
    State NJ
    Acquired 1989
    Active No misconduct found
  • Licensed for 34 years
    State PA
    Acquired 1989
    Active No misconduct found
  • Licensed for 33 years
    State DC
    Acquired 1991
    Administratively Suspended - Non-Payment of Dues No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Mary-Jo

Learn Mary-Jo’s areas of practice.

Practice areas
  1. Arbitration

    10 years, 150 cases

  2. Mediation

    10 years, 125 cases

  3. Construction and development

    24 years

Attorney, Mediator, Arbitrator


Active in the construction industry since 1997 as a generalist (both in the office and in the field), In-house counsel, Attorney, Mediator and Arbitrator. As a Mediator and Arbitrator, I offer services on a private basis and also serve on several panels including the American Arbitration Association and several Common Pleas Courts in Pennsylvania and in New Jersey Superior Court. I have conducted over a hundred mediation and arbitration matters. I will travel for ADR services.  While I focus my practice in construction law, I am also am available to provide Alternative Ddispute Resolution and legal services involving commerical matters,  real estate, business formations, contracts and offer general legal representation services.  In construction law, I represent contractors, homeowners, and construction consultants providing services concerning contract drafting and negotiation; claim evaluation, preparation and resolution; risk management evaluation and advice.  I have mediated and arbitrated matters involving construction, real estate, commerical debt, commercial disputes and personal injury matters.  Please visit my website for further information.


Gilsdorf Law, LLC
P.O. Box 513
Glen Mills, PA, 19342


5.0 / 5.0
  4 customer reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Posted by Pam | November 28, 2017
This review is from a potential client who consulted with this attorney.
| Consulted Attorney
Great lawyer and resource!
I met Mary Jo through real estate and have known her for many years. I have had occasion to recommend Mary Jo to friends and family and clients. Her knowledge of the law, construction, contracts and litigation, coupled with a caring and sincere attitude makes her the one I turn to or recommend when in need of advice or counsel.
Posted by Nate | May 28, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Superior Service and Professionalism
Mary Jo was recommended to my wife and me to assist with a home contactor dispute. She was extremely professional and knowledgeable about contract law and she was very thorough in asking us questions and going through all of our records. Throughout the process Mary Jo was very communicative and responded promptly to all of our questions and inquiries. She used her time well and minimized her overall fees and cost. Being in a position where you need to enlist the help of a lawyer is never a good thing but Mary Jo helped make the process as painless as possible, and she provided us with the valuable service we so desperately needed. My wife and I recommend her to others wholeheartedly.
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Posted by anonymous | June 25, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Great Advice and Guidance
Mary Jo provided great advise and guidance that helped my Practice reach a quick and amicable agreement. Her approach was practical and her knowledge and instinct was always on target. I highly recommend her.
Posted by anonymous | December 1, 2015
This review is from a potential client who consulted with this attorney.
| Consulted Attorney
International business consultation
In a recent international business transaction, Mary Jo Gilsdorf provided our partnership invaluable guidance, and assisted us in a manner that was efficient and protective of our interests. She provided clarity and understanding all the while maintaining her wonderful sense of humor. We highly recommend her. She was vital to our successful completion of the transaction.
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We have not found any cost information for this lawyer

Contact for Details


AVVO RATING 10.0 (Superb)

Work Experience

  • Member
  • Gilsdorf Law, LLC
  • 2014 - Present
  • Director of Legal Services
  • L. F. Driscoll Co., LLC
  • 2000 - 2014


  • Villanova University School of Law
  • JD - Juris Doctor
  • 1989
  • University of Delaware
  • 1980


  • Guy G. DeFuria American Inn of Court
  • President Elect
  • 2021 - Present
  • Chester County Bar Association, Alternative Dispute Resolution Committee
  • Co-chair
  • 2018 - Present
  • PA Council of Mediators
  • Member
  • 2015 - Present
  • Pennsylvania Bar Association, Alternative Dispute Resolution Committee
  • Member
  • 2015 - Present
  • Chester County Bar Association
  • Associate Member
  • 2014 - Present
  • Delaware County Bar Association
  • Member
  • 2014 - Present
  • American Arbitration Association
  • Panel Member
  • 2013 - Present
  • American Bar Association
  • Member
  • 2011 - Present
View all associations

Languages Spoken

  • English

Honors and Awards

  • AV Preeminent Rated
  • Martindale-Hubbell
  • 2021
  • Top Lawyer
  • Main Line Today Magazine
  • 2021
  • Top Lawyer 2019
  • Mainline Today
  • 2021
  • AV Premienent
  • Martindale-Hubbell®
  • 2021
View all awards

Speaking Engagements

  • Delaware County Bench Bar
  • Elements of a Residential Construction Claim
  • 2019
  • In-house Training
  • Working with Difficult People and Drafting an Award
  • 2018
  • Bench-Bar Conference
  • Building Blocks of Construction Law
  • 2018
  • Real Estate Section Breakfast CLE
  • Working with Standard AIA Contracts
  • 2017
  • Alternative Dispute Resolution Committee
  • Ethical Issues Facing Mediators
  • 2017
  • Chester County Bar Association ADR Committee
  • Mediating in Different Contexts
  • 2016
  • 20th Annual Real Estate Institute
  • Delving Into the Details of a Construction Management Guaranteed Maximum Price Agreement
  • 2016
  • Chester County Bar Association, ADR Committee
  • Survey of Arbitration Forums
  • 2015
  • 19th Real Estate institute
  • Building a Construction Contract
  • 2015
View all speaking engagements

Attorney endorsements

Received (2)
Given (3)
Endorse Mary-Jo
Construction and development Attorney | Sep 06
Relationship: Fellow lawyer in community
"I endorse this lawyer. Mary Jo is extremely knowledgeable and skilled at communication. I have recommended her to clients before, and will continue to do so."
Construction and development Attorney | May 30
Relationship: Worked together on matter
"I have worked with Mary Jo Gilsdorf on several matters. She is very experienced with construction contracts and is a great resource for anyone who is in the building trade or having an issue with a contractor."
Estate planning
Bankruptcy and debt
Estate planning

Avvo Contributions

2 Legal Answers 0 Legal Guides
Glen Mills Arbitration Lawyer Mary-Jo Gilsdorf
Mary-Jo Gilsdorf
Arbitration Attorney
Glen Mills, PA
Licensed for 34 years