ABOUT US

ZDI, LLC is a Scottsdale-based company specializing in construction and development. William and Mary Kostrivas founded ZDI in 1991, on the basic principles of honesty and integrity, and continue to operate on these values today. Clients of ZDI appreciate the company’s ability to offer the extensive resources of a large firm coupled with the personalized services of a smaller business.

ZDI delivers a wide range of services – such as site selection and permitting, construction, administration, and value engineering – for a variety of projects, including custom residential, commercial, land development, tenant improvements, hospitals, surgical centers and hospitality suites. With more than three decades of experience, ZDI has a proven track record of providing maximum efficiency, and cost effectiveness, as well as consistently delivering a high-quality product and exceptional services.