Denis OBrien

Denis O'Brien is the CEO and Principal Broker of ISG Property Collection, one of Central Indiana's leading real estate teams. For nearly 20 years, Denis has helped buyers, sellers, investors, and families navigate some of life's most important financial decisions with confidence and clarity.

Under his leadership, ISG Property Collection has grown into a trusted real estate advisory firm serving the Indianapolis metropolitan area and surrounding communities. Denis and his team have successfully guided more than 10,800 families through the buying and selling process, representing over $700 million in real estate transactions. Their client-first approach, innovative marketing strategies, and commitment to exceptional service have made ISG Property Collection a trusted name in Indiana real estate.

Denis specializes in residential, luxury, investment, and commercial real estate, bringing a strategic perspective that helps clients maximize opportunities while minimizing risk. Whether assisting a first-time homebuyer, a growing family, a luxury homeowner, or a seasoned investor, his focus remains the same: helping clients make informed decisions that support both their financial goals and lifestyle.

Beyond real estate sales, Denis is recognized as a national business coach and speaker, having coached real estate professionals and business owners across the country on leadership, growth, and wealth-building strategies. His advanced training as a Real Estate Planner allows him to guide clients through complex situations involving 1031 exchanges, trusts, probate, divorce, senior transitions, and investment planning.

A graduate of Marian University with degrees in Marketing and Finance, Denis combines market expertise with a strong financial background to deliver a level of guidance that goes beyond the transaction. His mission is simple: help clients build wealth through real estate while delivering an experience defined by trust, communication, and results.

When he's not serving clients or coaching business owners, Denis enjoys spending time with his wife, Buffy, and their four children.