With over 5,000 luxury apartments, CASTO has been building places for people to call home for over 90 years. Our communities are designed to meet the demand of residents' active lifestyles through innovative home design, modern amenities and strategic locations. We invest in great neighborhoods and seek ways to connect residents to their surroundings, to create a vibrant community.



William J. Riat, Partner

Bill Riat joined CASTO as a partner in 1995. Riat is a 1973 graduate of The Ohio State University and a Registered Architect. As a Partner, his responsibilities include directing the development and construction of multifamily and mixed-use developments from concept through completion. Riat also oversees Residential Property Management operations at CASTO. Having built over 18,000 apartment homes, primarily in suburban neighborhoods, he is now focused and passionate about urban and mixed-use developments. Riat believes that preserving historic buildings and maintaining the unique characteristics of neighborhoods throughout a city is an important role of a developer. This philosophy has been proven successful and is exemplified in the successful redevelopment of The Julian shoe factory, The Barrett School, and The Baldwin piano factory in Cincinnati.

Brent Sobczak, President, CASTO Communities

Brent Sobczak has 10 plus years of commercial real estate experience. He started his career in commercial banking serving most of the developers in Columbus. He joined CASTO in 2012, as a member of the multifamily development team. His primary focus is on CASTO's financial activities throughout the development process. This includes identifying profitable projects and bringing them to market by finding alternative sources of equity, project finance, partnership structuring, and contract negotiation. Brent holds a B.S in Finance and Management from Marshall University and an MBA from Ashland University. Sobczak has developed 1,800 units with total project costs in excess of $250 million.

Kolby Turnock, Vice President, CASTO Communities

Kolby Turnock joined CASTO in 2004 and is involved with all of CASTO's residential development projects. Serving as a Director of Multifamily Development, Turnock has a lead role in implementing our growth & value-add strategy for our portfolio by providing oversight on all multifamily projects from concept to completion. Prior to joining CASTO, Turnock worked as a planner for the City of Dublin. He received his master's degree in City and Regional Planning from The Ohio State University. Turnock has developed 1,800 units with total project costs in excess of $250 million.