Academy Member Inducted 2021

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Greg Gillis, Mediator & Arbitrator, Scottsdale, Arizona.

Greg Gillis

Sacks Tierney, P.A.
4250 N. Drinkwater Blvd.
Fourth Floor
Scottsdale, AZ 85251
Tel: (480) 421-6106
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Recognized to Arizona Chapter for Mediation & Arbitration
Video Conferencing
  • Practice Commenced5
  • # of MEDS (as of 24/4/24)100
  • # of ARBS (as of 24/4/24)30
Current Practice
Online / In-Person


Greg Gillis has over 30 years of trial experience in a wide variety of construction disputes, commercial litigation matters, and real estate transactions and litigation.  Over the course of his professional life, he has litigated cases in 14 of Arizona's 15 Counties.

Greg also has extensive experience as a neutral in mediating and arbitrating construction and commercial disputes. He serves on the American Arbitration Association's Construction, Commercial and Consumer Panel of Neutrals. (AAA experience described below), Greg is a Certified Arbitrator for the Maricopa County Superior Court and serves as a Judge Pro Tempore for the Maricopa County Superior Court, conducting settlement conferences involving a wide variety of civil matters.

Greg has received the AV Preeminent® rating by Martindale-Hubbell® and is a Best Lawyers in America® in the areas of Construction Litigation, Construction Law and Commerical Litigation.  He is also a Southwest Super Lawyers honoree in Construction Litigation

Case Experience

  • Banking & Finance
  • Bankruptcy/Creditors
  • Business Dissolution
  • Commercial/Business
  • Construction
  • Contract Disputes
  • Debt Collections
  • Family Businesses
  • Landlord/Tenant
  • Lemon Law
  • Mortgage Foreclosure
  • Partnerships
  • Property Damage
  • Real Estate
  • Religious Institutions
  • Shareholder Disputes
  • Title Disputes


  • J.D., University of Nebraska, 1986
  • B.A., University of Nebraska, 1982
  • Admitted to the Bar: Arizona and Nebraska (inactive) 
  • U.S. District Court of Arizona
  • U.S. Court of Appeals, Ninth Circuit
  • United States Supreme Court

ADR Training - See C.V. attached here for details.

Memberships & Affiliations


  • American Bar Association: Forum on Construction Law, Division 7 (Insurance, Surety & Liens), Member, Steering Committee and Marketing Committee; Division 1 (Alternative Dispute Resolution)
  • American Arbitration Association: Construction, Commerical and Consumer Panels
  • State Bar of Arizona: Alternative Dispute Resolution Section (Executive Council Member, 2019-present; Chair-Elect, 2020-2021), Construction Law Section, Bankruptcy Section
  • Maricopa County Bar Association: Construction Law Section
  • Scottsdale Bar Association
  • Judge Pro Tempore, Maricopa County Superior Court, 2014-present


  • Arizona, 1987
  • U.S. District Court, District of Arizona, 1987
  • Nebraska, 1988 (Inactive)
  • U.S. Court of Appeals, Ninth Circuit, 1995
  • U.S. Supreme Court, 1996


  • AV Preeminent® Peer Review Rating, Martindale-Hubbell® (2010-present)
  • The Best Lawyers in America®: Commercial Litigation (2013-present), Construction Law (2013-present), Litigation—Construction (2021)
  • Southwest Super Lawyers: Construction Litigation (2014-present)
  • Arizona's Finest Lawyers Foundation
  • Arizona’s Top Lawyers, AZ Business Magazine (2010, 2016)
  • AzBusiness Leaders (Law: Construction), AZ BIG Media (2015-2018)

Rates Information

$475 an hour. 

No charge for travel time within Arizona

Academy Members Only