01 — Why It Matters
California's housing pressure has made ADUs one of the fastest paths to add living space — but only with engineering that meets every local rule, from setbacks to seismic detailing.
Structural Engineering · ADUs · Southern California
Engineered plans and calculations for Accessory Dwelling Units — expedited permit approvals across the Los Angeles area and beyond.
An Accessory Dwelling Unit (ADU) is a secondary residential unit built on the same lot as a single-family home, offering additional living space for family, guests, or rental income. California laws and local ordinances encourage ADU construction to address housing needs while regulating setbacks, height, and safety.
California's housing pressure has made ADUs one of the fastest paths to add living space — but only with engineering that meets every local rule, from setbacks to seismic detailing.
Sigma Structural Inc. focuses exclusively on structural plans and calculations — no utility connections, no scope creep. That focus is why our clients see permit approvals significantly faster than typical timelines.
Streamlined, permit-ready plans that move our clients into construction quickly and smoothly — expediting timelines while keeping every detail compliant with the LA ADU ordinance and state law.
Real reviews from architects, contractors, and homeowners we've worked with across Southern California. Read every word our clients have shared on Google about partnering with Sigma Structural Inc.
