We are Sigma Structural Inc., a structural engineering company based in Southern California and we help homeowners,
architects, and contractors bring their projects to life with practical, dependable structural engineering solutions.
Our team combines technical expertise with real-world construction insight to create structures that are safe,
efficient, and built to last.
We handle projects of all sizes, including new homes, accessory dwelling units (ADUs),
Senate Bill 9 developments, renovations, and retaining walls. Whether you’re planning an addition,
strengthening an existing building, or starting from the ground up, we focus on clear communication,
timely delivery, and thoughtful design that supports your goals.
Our mission is to help homeowners and architects bring their visions to life while maintaining a clear focus on safety,
structural integrity, budget, and timeliness. We believe that great design is realized through collaboration,
and we are committed to supporting every stage of construction with technical guidance and clear communication.
Throughout the building process, we work closely with contractors to ensure that our structural plans are
executed accurately and efficiently. With over 50 completed projects, including a mix of new construction,
ADUs, Senate Bill 9 developments, renovations, and retaining walls, Sigma Structural Inc.
continues to be a trusted partner in shaping Southern California’s built environment.
