Architectural Highlight
At HPA, we take pride in our work, with a focus on precision and detail in every project. Our design philosophy balances function, cost-effectiveness, and aesthetic appeal, ensuring each project meets both client expectations and operational needs.
Insights & News
We Wrote the Book
With over four decades of experience, HPA, Inc. has developed a wealth of profound expertise regarding successful industrial design and construction. We continue to maintain a strong level of technical expertise through extensive collaborations with Real Estate Development Companies and End Users. Often, you will find us engaging with these agencies through education on stock inventory products as well as manufacturing programs. Collaborating with the NAIOP in 2005, we authored the influential “Rules of Thumb for Distribution/Warehouse Facilities Design”, an authoritative compendium updated in 2020 to align with ongoing market trends and industry standards.

Navigating the CBSCS 2025 code change
Our team has reviewed the 2025 California Building Code (CBC) updates, which will become effective on January 1, 2026. Below is a high-level summary of the relevant changes for industrial buildings: Seismic forces go up by 15% to 20% Increased emergency egress illumination requirements Increased guardrail requirements at retaining walls Long term required bicycle parking requirements are doubled EV chargers requirements are doubled Case by case: More solar, battery storage, and updated photovoltaics & battery energy storage standards Increased requirements for indoor and outdoor storage of lithium-ion / lithium metal batteries and energy storage systems More stringent wildfire and wildland interface provisions
For more information see our detailed code update. We are tracking the code adoption schedule for our other major markets as well. For more information contact us at info@hparchs.com to discuss the code changes that apply to your project.

Emerging Trends in Industrial Skylights
Incorporating natural light into warehouse and manufacturing facilities is a common design approach. Natural light improves working environments and reduces energy consumption. The difference between a building with and without skylights is… night and day. However, their integration into building design comes with both benefits and drawbacks, which can vary significantly depending on the geographical location and climate. This white paper illuminates the key considerations for installing skylights, with a specific focus on market differences between west coast projects specifically Arizona, Washington, and California. Additionally, we examine the alternative use of clerestory windows as a viable design option.





