Sigma Structural Inc.

A structural engineering firm serving residential projects. It provides structural engineering plans and calculations for new ground-up construction, accessory dwelling units, renovations, and Senate Bill 9 developments. Services also include retaining wall engineering for conventional or pile foundations, along with guidance for additions and strengthening existing buildings. The firm works with homeowners, architects, and contractors, supporting projects through structural planning and construction. Its portfolio includes residential renovations and new construction, retaining walls, balcony reinforcement, and a pavilion structure. Service coverage includes San Diego, Orange County, and Los Angeles, with projects throughout Southern California. The firm reports more than 50 completed projects across its residential and site work.