Atty. Mark L. Collins

After almost 40 years of experience in complex commercial and real estate litigation in both state and federal courts, for the past decade, Mark has focused his practice on representing a governmental entity and in so doing negotiating and crafting the documents necessary for a wide variety of commercial projects from a variety of hotels to headquarters for international firms, to massive upgrades to a regional public facility and various other similar projects.

For many years, Mark has been listed in the Real Estate Law category of The Best Lawyers in America and is AV Preeminent rated by Martindale Hubbell, representing the highest rating in legal ability and ethical standards. The Best Lawyers in America recently identified Mark as a real estate Lawyer of the Year for Tucson.

Legal Updates & Firm News

Apr 28, 2026 - General

Arizona Public Entities Not Bound by Time Restriction of A.R.S. 12-821 When Acting as Plaintiffs

Aug 16, 2024 - General

Gust Rosenfeld P.L.C. Attorneys are once again Recognized as “Best Lawyers” and “Ones to Watch” in the 2025 Edition of The Best Lawyers in America

Professional Recognition

•The Best Lawyers in America, Litigation - Real Estate; Real Estate Law (2013 - 2026)
•Lawyer of the Year Tucson, Litigation - Real Estate Law (2022 - 2023)
•Top 100 Attorneys in Arizona, AZ Business (2022)