Sacks Tierney P.A.

Member of Meritas: 173 full-service law firms serving more than 200 markets worldwide

Scottsdale-Phoenix | 480.425.2600

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Greg Gillis

480.421.6101

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Gregory P. Gillis
Rated by Super Lawyers


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The Best Lawyers in America
American Arbitration Association Panel Member

National Academy of Distinguished Neutrals

National Academy of Distinguished Neutrals

 

 

Gregory P. Gillis

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.

Greg also has extensive experience as a neutral in mediating and arbitrating construction, commercial and consumer disputes. In addition to his American Arbitration Association (AAA) experience (described below), Greg is a member of the National Academy of Distinguished Neutrals; has been appointed as arbitrator in Maricopa County Superior Court cases; serves as a Judge Pro Tempore for Maricopa County Superior Court, conducting settlement conferences involving a wide variety of civil matters; and chairs the Alternative Dispute Resolution section of the State Bar of Arizona for the 2021-2022 term.

Greg has received the AV Preeminent® rating by Martindale-Hubbell® and is a Best Lawyers® and Super Lawyers honoree.

Arbitration and Mediation Calendar

Use Greg Gillis’ convenient interactive calendar (below) or at www.nadn.org/greg-gillis to schedule your next mediation or arbitration. Greg or his legal assistant will contact you to confirm your requested date.

PRACTICE AREAS

Construction Litigation. Representation of owners, general contractors, subcontractors, material suppliers, rental equipment companies, manufacturers, architects and engineers in both public and private contract disputes relating to residential and commercial projects. Construction disputes relating to contract terms and conditions, change orders, defective construction, delay, termination, warranty, payment disputes, Miller and Little Miller Act claims, liens, surety and license bond claims, prompt payment disputes, Arizona Registrar of Contractors disputes and Arizona Office of Administrative Hearings proceedings.

Commercial Litigation. Breaches of contracts, promissory notes, guarantees, security agreements, business loan agreements, operating agreements and buy-sell agreements; company dissolution disputes among partners, shareholders, members and other business principals; personal and real property liens and foreclosure; commercial landlord/tenant disputes; open-account collections; pre-judgment writs of replevin, garnishment and attachment; post-judgment garnishment, levy and execution; charging orders; and fraudulent conveyances and transfers.

Alternative Dispute Resolution. Membership on the American Arbitration Association (AAA) Construction, Commercial and Consumer Panel of Neutrals. Served as a mediator or arbitrator or advocate and counsel in cases ranging from $50,000 to $10,000,000, including claims arising out of construction defects (framing, roofing, HVAC, stucco, painting), breach of construction contracts, change order disputes, prompt pay disputes, breach of warranty, breach of the implied warranty of workmanship and habitability, indemnity/contribution claims, payment bond claims, architect and engineer professional negligence claims. Commercial experience including disputes arising out of sales of businesses and failed mergers, real estate purchase and landlord/tenant lease disputes, escrow and title insurance disputes, boundary and homeowner association disputes, lender/borrower disputes, breach of fiduciary duty and misrepresentation claims and secured transaction disputes.

Real Estate Litigation. Real estate purchase and sale agreements, commercial leases, commercial landlord/tenant disputes, residential and commercial foreclosures, title and other insurance disputes, eviction, and easement and boundary disputes.

Bankruptcy Litigation. Relief from the automatic stay, assumption or rejection of leases, non-dischargeability litigation under Sections 523 and 727, objections to proofs of claim, contested confirmation hearings, reclamation claims and preference claims.

HONORS & AWARDS

AV Preeminent® Peer Review Rating, Martindale-Hubbell® (2010-present)

The Best Lawyers in America®: Commercial Litigation (2013-present), Construction Law (2013-present), Construction Litigation (2021-present)

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)

PROFESSIONAL ACTIVITIES

American Bar Association: Forum on Construction Law (Division 7, Insurance, Surety & Liens, Steering Committee and Marketing Committee; Division 1, Alternative Dispute Resolution)

American Arbitration Association: Construction, Commercial and Consumer Panel of Neutrals

State Bar of Arizona: Alternative Dispute Resolution Section (Chair, 2021-2022; Chair-Elect, 2020-2021; Executive Council Member, 2019-present); Member, Construction Law Section; Member, Bankruptcy Section

National Academy of Distinguished Neutrals

Maricopa  County Bar Association: Construction Law Section

Scottsdale Bar Association

Judge Pro Tempore, Maricopa County Superior Court, 2014-present

ARTICLES

Offset and Recoupment Are Not Valid Defenses to Prompt Pay Proceedings Before the ROC,” Sacks Tierney Construction Corner, January 2021

“The Unintended Consequences of Statutes of Limitation,” Arizona ADR Forum, Fall Newsletter, November 2020

"California Court Rules Pay-When-Paid Clause in Public Works Contract Unenforceable," Sacks Tierney Construction Corner, October 2020

Company Principals Can be Personally Liable for Collected but Unremitted TPT Taxes,” Sacks Tierney Construction Corner, July 2020

The Looming Bankruptcy Pandemic and the Impact of the New Small Business Reorganization Act's Changes to the Bankruptcy Code,” Sacks Tierney Construction Corner, April 2020

The Intersection of Bankruptcy Preferences and Mechanic’s Lien Waivers — A Wrong Turn Can Be Costly” (co-author), ABA Forum on Construction Under Construction Newsletter, October 2019

Home Warranty Policy Does Not Create a Claim Against the ROC's Recovery Fund,” Sacks Tierney Construction Corner, September 2019

Prompt Pay Act: Arizona Legislature Overrules S.K. Builders Decision,” Sacks Tierney Construction Corner, June 2019

‘Proportional Indemnity’ Is Now the Law of the Land in Arizona,” Sacks Tierney Construction Corner, June 2019

Payment and Performance Bonds Are Incorporated into Federal Construction Project Contracts, Even If Not Expressly Stated,” Sacks Tierney Construction Corner, March 2019

Case Law Update: Two Recent Arizona Cases Regarding Judgments,” Sacks Tierney Construction Corner, January 2019

A Homeowner's Insurer Has a Duty to Defend a Builder Vendor Against a Claim for Negligent Excavation Brought by the Homebuyer,” Sacks Tierney Construction Corner, June 2018

Effective August 3, 2018, Arizona Judgments Are Good for 10 Years,” Sacks Tierney Construction Corner, June 2018

Cures for Common Contractor Headaches: 10 ‘Health Tips’,” Sacks Tierney Construction Corner, May 2018

“50 State Lien Law Handbook” (contributor), American Bar Association, Forum on Construction Law, Division 7 (2018)

Arizona's Prompt Pay Act Does Not Apply to Federal Construction Projects,” Sacks Tierney Construction Corner, February 2018

Attorney Fees Are Now Recoverable in a Breach of Warranty Claim Against a Contractor by Subsequent Homeowners,” Sacks Tierney Construction Corner, October 2017

Are Liquidated Damage Clauses in Construction Contracts at Risk of Being Declared an Unenforceable Penalty? Construction Corner, Sacks Tierney, August 2017

Adverse Possession: Can My Neighbor Take a Portion of My Property?Scottsdale Airpark News, February 2017

BAR ADMISSIONS

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

BUSINESS AFFILIATIONS

Arizona Builders Alliance

American Subcontractors Association of Arizona

Arizona Minority Contractors Association

Scottsdale Area Chamber of Commerce

Southwest Business Credit

EDUCATION

J.D., University of Nebraska, 1986

B.A., University of Nebraska, 1982

COMMUNITY LEADERSHIP

SAE Phoenix Alumni Inc.: Director, 2015-Present

North Bible Church: Elder, 2016-2020

Children’s Cancer Network: Director, 2013-2019

ALTERNATIVE DISPUTE RESOLUTION TRAINING

“Arbitration and Mediation Case Law Update 2020,” State Bar of Arizona Alternative Dispute Resolution Section, 2020

“Video Arbitration: What to Consider Before Jumping In,” American Bar Association, Forum on Construction Law, 2020

“Cyber Security: A Shared Responsibility,” American Arbitration Association, 2020

“Zooming into ADR: Mediations and Arbitrations,” State Bar of Arizona, 2020

“ADR in the Wake of COVID-19,” American Bar Association, 2020

“Private Arbitration Update,” State Bar of Arizona, 2020

“ACE 19-Case Finances: What Arbitrators Need to Know,” American Arbitration Association, 2019

“Handling Righteous Indignation,” State Bar of Arizona, 2019

“Peering into the Arbitrator's Brain,” State Bar of Arizona “ADR Talks,” 2019

“A Model Mediation Settlement Agreement” (with forms), State Bar of Arizona, 2019

“What Every Arbitrator Should Know About Receiverships in Arbitration,” State Bar of Arizona, 2019

“Can Freud Help? The 2018 Interplay of Psychology and Negotiation/Mediation Strategy,” State Bar of Arizona, 2019

“Drafting Effective Submission Agreements,” State Bar of Arizona, 2018

“Faith-Based Alternative Dispute Resolution: Alternatives to Secular Courts,” State Bar of Arizona, 2018

“Sexual Harassment Presentation for AAA Panelists,” American Arbitration Association, 2018

“Mediation Is the New Trial,” State Bar of Arizona, 2018

“Conducting Effective, Tone-Setting Pre-Hearings and Resolving Discovery Disputes,” Roundtable, American Arbitration Association, 2018

“Simplifying Your Case for Arbitrators and the Value of Formal Rules and Administration,” Advocates Program, American Arbitration Association, 2018

“2018 AAA Construction Conference,” American Arbitration Association, 2018

“Vocal Traits and Hidden Bias,” State Bar of Arizona, 2018

“Interim Awards, Partial Final Awards and Functus Officio: Tailoring Flexible Accessories to Suit a Strict Doctrine,” American Arbitration Association, 2017

“Best Practices in Employment Arbitration from the Arbitrator and Advocate Perspectives,” State Bar of Arizona, 2017

“Mediation Skills Across Practice Areas,” State Bar of Arizona, 2017

“Mediation in Evolution: Challenges and Opportunities,” State Bar of Arizona, 2017

“Arbitration Talks,” State Bar of Arizona, 2017

“Best Practices in Commercial Arbitration,” American Arbitration Association, 2016

“Private Arbitration Update,” Sandra Day O’Connor College of Law, Arizona State University, November 2016

“Ethical Considerations for Arbitrators, Mediators and Advocates,” American Arbitration Association, 2016

“Essential Mediation Skills for the New Mediator,” American Arbitration Association, 2015

“Avoiding Ten Common Missteps Arbitrators Make,” American Arbitration Association, 2015

“Preparing for a Construction Mediation: A Mediator’s Perspective,” State Bar of Arizona, 2014

“Powerful Preparation and Persuasion: 12 Secrets to Mediation Success,” State Bar of Arizona, 2014

“AAA Arbitration Rules Update,” State Bar of Arizona, 2014

“Ethical Perils and Pitfalls for Arizona Mediators and Arbitrators,” State Bar of Arizona, 2013

“Best Practices in Construction Arbitration and Mediation,” State Bar of Arizona 2012

PRESENTATIONS

“My Customer Filed Bankruptcy: Now What?” Southwest Business Credit and Construction Conference (webinar), July 2020

“Zooming into ADR: Mediations and Arbitrations,” State Bar of Arizona, Alternative Dispute Resolution Section, June 2020

“Stop Notices: Securing Payment on Arizona Commercial Construction Projects” (webinar), May 2020

“COVID-19: The Intersection of Lien Law and Bankruptcy” (webinar), April 2020

Project Manager Development Program, Arizona Builders Alliance, February 2020

“Unique Issues in Arizona Construction Law: What Credit Managers Need to Know,” Southwest Business Credit Services, October 2019

“The Intersection of Bankruptcy Preferences and Mechanics’ Lien Waivers: A Wrong Turn Can Be Costly” (co-presenter), American Bar Association Forum on Construction Law, August 2019

“Payment Issues: Prompt Payment, Mechanic's/Materialman's Liens and other Collection Issues,” Arizona Builders Alliance, April 2019

“My Customer Files Bankruptcy: What Must I Do?” Southwest Business Credit and Construction Conference, April 2019

“Model Mediation Settlement Agreement” (with forms), State Bar of Arizona, Alternate Dispute Resolution Section, January, 2019

“A Model Mediation Settlement Agreement (with Forms)” (panel moderator), State Bar of Arizona, Alternative Dispute Resolution Section, January 2019

“Stop Notices: The Little-Known Way to Get Paid on Commercial Construction Projects,” Southwest Business Credit Services, October 2018

“Preliminary Notices to Mechanics’ Liens: Fact from Fiction” (co-presenter), Arizona Builders Alliance Webinar, May 2018

Project Manager Development Program, Arizona Builders Alliance, February 2018

“Commercial General Liability, Additional Insured Coverage, and Completed Operations Issues,” Arizona Subcontractors Association of Arizona, October 2017

“ABCs of ADR (Alternative Dispute Resolution),” Arizona Builders Alliance, October 2017

"A 'Legal Audit' of Your Business Practices" (panelist), Arizona Builders Alliance Legal Roundtable, October 2017

“Risk Management: Roles of Preliminary Notices and Mitigating Risk,” Arizona Minority Contractors of America, June 2017

“The Importance of Pre-Construction Property Identification and Assigning Risk” (webinar), Arizona Builders Alliance, June 2017

“Uniform Commercial Code and Other Secured Transactions,” Southwest Business Credit and Construction Credit Conference, April 2017

“My Customer Filed Bankruptcy — What Must I Do?” Southwest Business Credit and Construction Credit Conference, April 2017

“Arizona Mechanic’s and Materialmen’s Liens,” American Subcontractors Association of Arizona, March 2017

“Contract Administration and Legal Issues,” Arizona Builders Alliance Project Managers Development Program, March 2017

“ABCs of ADR (Alternative Dispute Resolution),” Southwest Business Credit Services Legal Insights Educational Series, March 2017

“Arizona Lien Law,” Southwest Business Credit and Construction Credit Conference, April 2016

“Personal Guarantees,” Southwest Business Credit and Construction Credit Conference, April 2016

“Preventing and Resolving Construction Disputes: An Ounce of Prevention Is Worth a Pound of Cure,” Arizona Builders Alliance, January 2016

“50-State Lien Law Pamphlet” (Arizona Contributor), American Bar Association, Forum on Construction Law, 2016

“Arizona Lien Laws: What You Need to Know,” Southwest Business and Construction Credit Conference, April 2016

“Personal Guarantees,” Southwest Business and Construction Credit Conference, April 2016

“Contract Administration and Legal Issues,” Arizona Builders Alliance, Project Manager Development Program, February 2016

“Preventing and Resolving Construction Disputes: An Ounce of Prevention Is Worth a Pound of Cure,” Arizona Builders Alliance, January 2016

“Construction Arbitration: What You Need to Know Now,” National Business Institute, 2016

“Legal Implications of Same-Sex Marriage on Your Credit Decisions,” Southwest Business Credit Services, Legal Insights Educational Series, September 2015

“Arizona Lien Laws: What You Need to Know,” The Weitz Company, September 2015; Arizona Builders Alliance (webinar), May 2015

“Construction Lien Law in Arizona,” Southwest Business Construction Credit Conference, April 2015

“Lien Foreclosures and Lien Priority Issues for Credit Managers,” Southwest Business Construction Credit Conference, April 2015

“Yes, No or Maybe So? Drafting Effective Mandatory ADR Provisions,” Scottsdale Bar Association, 2015

“Understanding and Protecting Your Payment Rights” (Legal Roundtable), Arizona Builders Alliance, November 2014

“Construction Lien Law in Arizona,” Lorman Education Services, September 2014

“Arizona Lien Law and Judgment Enforcement Remedies,” Southwest Business and Construction Credit Conference, April 2014

“Arizona Lien Laws: What You Need to Know” (webinar), Arizona Builders Alliance, February 2014

“Reclamation and Preference: When the Bankruptcy Court Wants You to Give Money Back to a Debtor,” Southwest Business Credit Services Legal Insights Educational Series, September 2013

“An Overview of Issues Related to Personal Guarantees,” Southwest Business Credit Services Legal Insights Educational Series, September 2013

“Post-Judgment Collection Remedies,” Southwest Business and Construction Credit Conference, April 2013

“Prescription for Healthy Subcontracts” (Legal Roundtable), Arizona Builders Alliance, March 2013

“Reclamation and Preference Issues in Bankruptcy: When the Bankruptcy Court Wants You to Give Money Back to the Debtor,” Southwest Business and Construction Credit Conference, April 2012

“Foreclosure of Personal Property Liens and Other Non-Cash Alternatives of Getting Paid,” National Association of Credit Management Executive Forum, April 2012

“Reclamation and Preference Issues in Bankruptcy,” Southwest Business and Construction Credit Conference, April 2011

“Collecting from Bankrupt or Insolvent Contractors,” National Association of Credit Management, “Good Morning Credit!” September 2010

“Preference Issues and Abuses in Bankruptcy,” Southwest Business Credit Executives Forum, August 2010

“Collecting from Bankrupt Contractors,” Southwest Business and Construction Credit Conference, April 2010

“Effective Collection Methods,” Southwest Business and Construction Credit Conference, April 2010