A precision manufacturer and integration services firm — built to support the teams that deliver exceptional work.
Diamond SPI is a precision manufacturer and integration services firm. We deliver engineered components, system design, and expert planning — so the projects you build perform exactly as intended.
Our approach combines deep engineering expertise with in-house fabrication capability. Every component we produce and every system we design reflects a single standard: built right, the first time.
We exist to support the teams doing the hardest work. Whether you're designing a system, sourcing components, or navigating complex documentation — we're the partner behind the outcome.
In-house fabrication of custom components engineered to exact specifications. From prototype to production, we control every step of the manufacturing process to ensure consistent quality and fit.
We design across every major automation and control platform, ensuring our solutions integrate seamlessly with any ecosystem your project requires — without limitation.
Every project deliverable is prepared to professional engineering standards — single-line diagrams, equipment schedules, coordination studies, and submittal packages ready for AHJ and engineering review.
Our business model is built around supporting your team, not competing with it. Whatever your project demands, we supply the engineering depth and components to make it happen.
From AV signal flow and lighting load calculations to medium voltage coordination studies and surge protection per NFPA 70 — our engineering expertise spans the full spectrum of building technology systems.
Turnkey supply of AV, lighting, automation, and electrical protection components. We source, specify, and deliver commercial-grade equipment directly to your project site anywhere in the United States.