ENR 2026 Top 500 Design Firms - Hoefer Welker
Hoefer Welker has been named to Engineering News-Record’s (ENR) 2026 Top 500 Design Firms list, an annual ranking of the largest U.S.-based design...

Contributing to Solar Spectrum’s contemporary, open office design, Rockfon innovative stone wool ceiling products help enrich this modern workplace with a good acoustic experience that promotes natural solutions, sustainability, peace of mind and quality of life.
Prominently situated on the fourth floor of City Center Square in downtown Kansas City, Missouri, Solar Spectrum‘s office supports the company’s continued growth in distributing solar panel systems to customers across the U.S. The company designs residential and commercial power systems, provides financing options; and manages system installation, maintenance and performance.
Living the brand, Solar Spectrum’s modern, open office design reflects a positive culture of openness, interaction and energy. Harnessing the natural power of stone, Rockfon acoustic stone wool ceiling systems are positioned strategically throughout the workspace to enhance visual interest, sustainable practices, employee comfort and productivity.
Hoefer Welker has been named to Engineering News-Record’s (ENR) 2026 Top 500 Design Firms list, an annual ranking of the largest U.S.-based design...
Hoefer Welker has expanded its national footprint with the opening of a new office in Orlando, Florida, our second location in the state. The...
Hoefer Welker has named longtime Dallas leader John Castorina as Co-CEO, joining Rob Welker in guiding the firm’s future. Castorina has helped drive...