Galloway & Company, a national architecture and engineering firm based in Denver, has completed the acquisition of Z Development Services, a Florida-based civil engineering firm, effective April 10, 2026. The acquisition supports Galloway’s continued national growth strategy and is backed by investment partners ARA Services Partners and Kelso & Company.
Z Development Services brings a strong track record in civil engineering and development-related services across the United States. Their capabilities include due diligence, civil engineering design, and project management support through design, permitting, and development. The Z Development Services team will continue to operate from Orlando and maintain continuity for clients while expanding access to Galloway’s additional multidisciplinary resources.
Founded in Denver in 1982, Galloway has grown to 370 professionals across 17 offices and 10 states. The firm ranks 288 on the Engineering News Report Top 500, having climbed 102 positions over the past five years. Galloway is licensed in all 50 states and offers 14 in-house disciplines, making it a true multidisciplinary company spanning all major architecture and engineering design services.
The acquisition aligns with Galloway’s long-term growth strategy as the firm continues to expand its regional and national footprint. The addition of Z Development Services’ team and capabilities enhances the multidisciplinary resources Galloway can bring to clients across the country.
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“The addition of Z Development Services supports Galloway’s continued national growth, and it enhances the resources we can bring to clients across the country. Just as important, Z Development’s people-first mindset and commitment to client service strongly align with our culture, so we are excited to welcome them to Galloway.”
Dave Guetig, PE, President, Galloway & Company
“Joining Galloway is a natural fit because their values and commitment to client success reflect our own. By uniting our teams, we significantly enhance our collective skillset, allowing us to expand our regional and national influence while delivering even greater opportunities and innovative solutions for our clients.”
Bob Ziegenfuss, PE, Founder and President, Z Development Services
