Mark A. Senn
Mark A. Senn

Mark's practice emphasizes all aspects of commercial real estate transactions including preparation and negotiation of leases, purchase and sale contracts, and loan agreements.  He represents landlords, tenants, developers, and lenders and frequently serves as an expert witness.  He has spoken throughout the country for Practicing Law Institute, International Council of Shopping Centers, the American Conference Institute, CLE International, and many state continuing legal education programs.  Mark is the co-chair of ALI-ABA's "Commercial Real Estate Leases" and "Modern Real Estate Transactions" programs.

Mr. Senn is the author of Commercial Real Estate Leases: Preparation, Negotiation, and Forms (4th ed.), and contributing editor of State-by-State Guide to Commercial Real Estate Leases, and Commercial Real Estate Transactions Handbook (4th ed.).  His published articles have addressed a variety of topics including the effect of the Black Death on English life and law, history of usury, land measurement, escrows, and self-help for commercial landlords.

He is a member of the board of advisors of Commercial Lease Law Insider and Commercial Tenant's Lease Insider, a member of the advisory board of the Georgetown Advanced Commercial Leasing Institute, a member of the American College of Real Estate Lawyers, a member of the Real Estate Advisory Board of ALI-ABA, a member of the Panel of Commercial Arbitrators - American Arbitration Association, and is listed in The Best Lawyers in America, The International Who's Who of Real Estate Lawyers, Presidential Who's Who, Chambers USA America's Leading Lawyers for Business, Law Dragon 500, and Top 50 Colorado Super Lawyers.


Stanford University (1969)

J.D. University of California at Berkeley (Boalt Hall) (1972)

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Mark Senn has been selected Lawyer of the Year, Denver Real Estate Law, for the 2012 edition of The Best Lawyers in America®.
For over a quarter of a century, Best Lawyers has been regarded - by both the profession and the public - as the definitive guide to legal excellence in the United States. Because selection to Best Lawyers is based on an exhaustive and rigorous peer-review survey (comprising more than 3.1 million confidential evaluations by your fellow top attorneys) and because no fee or purchase is required to be listed, inclusion in Best Lawyers is rightly considered a singular honor. Its annual, advertisement-free publication has been described by The American Lawyer as "the most respected referral list of attorneys in practice."


American Law Institute   |  American Bar Association Publishers

Mark Senn has been asked to serve as an Advisor on Real Estate Law to the Board of the Continuing Professional Education Committee of ALI_ABA. (2008-2010). ALI-ABA has been the recognized leader in continuing professional education in the United States for nearly 60 years. In 1947, the American Bar Association, the largest professional organization for lawyers in the world, asked the American Law Institute, an influential and highly respected law-reform organization, to develop the first national program of post-admission legal education.

Mark Senn has been selected for inclusion in Super Lawyers Editions 2006-2014 published by Law & Politics. Law & Politics uses a system of balloting, peer evaluation and internal research, to create their "Super Lawyers List" which is published in various magazines including 5280.  No other legal publisher identifies qualified candidates by using a multi-step evaluation process that incorporates peer recognition and professional achievement.  The resulting product is a diverse and comprehensive listing of outstanding lawyers.


Mark Senn has been selected as being among of the world's leading Real Estate lawyers in the Who's Who Legal Directory. Since 1996 Who's Who Legal has identified the foremost legal practitioners in multiple areas of business law. In total, it features over 10,000 of the World's leading private practice lawyers from over 100 national jurisdictions.<\p>


Mark Senn has been given an AV rating. The Martindale-Hubbell Peer Review Ratings help buyers of legal services identify, evaluate and select the most appropriate lawyer for a specific task at hand. Lawyer Ratings serve as an objective indicator that a lawyer has the highest ethical standards and professional ability and are used by buyers of legal services to justify their hiring decisions.