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 the open office design at Solar Spectrum, stone wool ceiling products from Rockfon help enrich this workplace with an acoustic experience that promotes solutions, sustainability, peace of mind and quality of life.
Situated on the fourth floor of City Center Square in downtown Kansas City, Mo., the Solar Spectrum office supports its 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, the Solar Spectrum open office design reflects a culture of openness, interaction and energy. Harnessing the 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...