Dream design build

/ a family owned home remodeling company in Los Angeles

“Be faithful to your own taste, because nothing you really like is ever out of style”

by Billy Baldwin

/ Who We Are

Structural Engineering Built To Last

About Us

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.

What We Handle

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

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. With over 50 completed projects across Southern California, Sigma Structural Inc. continues to be a trusted partner in shaping the region’s built environment.

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/ Permit-Ready Structural Engineering

Got a Project?

From a single bearing-wall removal to full ground-up construction, Sigma Structural Inc. delivers code-compliant plans and calculations that move your project quickly through permit and into the field. We work alongside architects, contractors, and homeowners across Southern California.

/ Our Engineering Services

structural services

ADUS

NEW GROUND UP CONSTRUCTION

RENOVATIONS

SB9

RETAINING WALLS

/ Portfolio

selected projects

Renovation

Residential Renovation, Los Angeles

New Construction

Residential New Construction, Malibu

Site Improvements

Pavilion Structure, Thousand Oaks

/ Client Voices

What Our Clients Say On Google

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.

/ The Sigma Structural INC.' Difference

A DIFFERENT remodeling contractor

Streamlined Process

Our home remodeling company works efficiently because we respect our customers’ time. You can depend on us to meet all the milestones on time throughout the duration of your renovation project.

Ethics & Integrity

We at Sigma Structural INC. take pride in maintaining clear lines of communication. Your home renovation project will go smoothly, according to plan.

Clear Communication

Our home remodeling company pledges to always do the right thing, even if it is more difficult. We are the home builders who are responsible for our actions and care about building a good relationship with our customers.

We Actually Care

Sigma Structural INC. focuses on quality, quality, quality. Our 100% satisfaction guarantee means your home will turn out exactly as you wanted before we consider work to be done.