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Commercial building constructed by DECOMA Industries, South Bay general contractor

Commercial · Since 1978

Buildings that
earn their place.

Forty years of LA commercial construction — offices, multifamily, mixed-use, adaptive reuse. We design, build, and manage under one license, so the team that scopes the work is the team that delivers it.

Commercial projects
1,200+
Repeat clients
200+
Class A/B licensed
40+ yrs
South Bay cities
9+

Trusted by

Names you already know.

See the full client list
  • Walt Disney Imagineering
  • DreamWorks SKG
  • McDonnell Douglas
  • Northrop Grumman
  • Oakley
  • 3M
  • Nestlé
  • Castrol

Three disciplines, one license

How a commercial build with DECOMA goes.

  • Marcelina Lofts — designed and entitled by DECOMA Industries

    Site to permit

    Site analysis, ROI-driven planning, entitlements, and construction documents — finished with a permit, not a pitch deck.

  • DECOMA Industries active commercial construction site

    Permit to keys

    Ground-up, fit-out, adaptive reuse. CSLB Class A/B. Self-perform every major trade so the schedule answers to us.

  • Broadway Lofts — multifamily under DECOMA management

    Keys to forever

    Operations, repairs, tenant relations, and ROI tracking. We stay with the building after handover.

What we offer

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Recent work

We built it.
Here’s the proof.

All projects

A South Bay commercial contractor since 1978

DECOMA is a family-run commercial general contractor based in the South Bay of Los Angeles. For more than forty years we've built, renovated, and managed commercial buildings across Torrance, El Segundo, Redondo Beach, Manhattan Beach, Palos Verdes, San Pedro, and greater LA — over three thousand projects, most of them for clients who came back for the next one.

What sets a DECOMA commercial job apart is that three disciplines live under one roof: we design, we construct, and we manage. You aren't hiring a designer who hands a set to a builder who blames the drawings when something doesn't line up. The people who scope your project carry it through permit, self-perform the build under our CSLB Class A and B license (#375508), and — when you want it — run the building afterward. That single point of accountability is why our commercial work lands on budget and on schedule.

What we build

  • Ground-up construction — offices, mixed-use, multifamily, and light-industrial shells, from site through certificate of occupancy.
  • Tenant improvements — Class A office TI, white-box conversions, retail build-outs, and MEP retrofits, sequenced around tenants who are still working in the building.
  • Renovation and adaptive reuse — bringing tired commercial buildings back to life, including historic rehabilitation under the California Historical Building Code.
  • ROI-driven design — planning that starts from what the building needs to earn, not from a catalog page.
  • Property management — operations, repairs, tenant relations, and long-term ROI tracking after handover.

Every trade under one license

Most of what a commercial building needs, we self-perform. Structural, framing, concrete, and finish carpentry are in-house, and our own crews handle the core trades — electrical, plumbing, drywall, painting, and flooring — with specialty MEP, fire, and audio-visual subbed to partners we've worked with for years. One project manager owns the schedule end to end, which is why our commercial jobs don't stall in the gaps between trades. See the full range on our commercial services pages.

Built for names you already know

Forty years of South Bay commercial work has meant building for studios, aerospace, cities, hospitals, and retail. We've built for Walt Disney Imagineering, McDonnell Douglas, Northrop, 3M, Westfield, Nestlé, and the City of Torrance. We rehabilitated the Inner City Arts campus for the Mark Taper Foundation, performed life-safety work at the Pritikin Longevity Center, and completed a facility for McDonnell Douglas in Monrovia. On the development side, our adaptive-reuse work includes the Marcelina Lofts in Torrance and the Toy Lofts downtown. The full client list runs long, and most of it is repeat business.

We know each South Bay city's counter

The South Bay is not one place to build. Torrance runs its own Building & Safety department at 3031 Torrance Blvd — separate from LA County, with its own pace. El Segundo turns standard tenant-improvement plans in weeks where the City of LA takes months. Palos Verdes layers in its own review. Knowing how each city's counter reads a set — and running the corrections cycle directly, without a third-party expediter — is where commercial schedules are won or lost. That local knowledge is forty years deep.

Start with a conversation

Tell us about the building or the site. The first consultation is free and runs about thirty minutes — we'll give you a straight read on scope, schedule, and a real budget range for your specific South Bay city.

Start with a free consultation → — or browse finished work in our Projects.

Written by John Notaro, President & CEO, DECOMA Industries — CSLB Class A/B #375508, California Real Estate Broker.

FAQ

Common questions.

What areas does DECOMA's commercial team serve?
We're based in Harbor City and build across the South Bay — Torrance, El Segundo, Redondo Beach, Manhattan Beach, Hermosa Beach, Palos Verdes Estates, Rancho Palos Verdes, San Pedro — and greater Los Angeles. Each of those cities runs its own Building & Safety counter with its own plan-check habits; we carry drawings through them directly, without a third-party expediter.
What kinds of commercial work do you self-perform?
Under one CSLB Class A (engineering) and B (building) license, we self-perform structural, framing, concrete, and finish carpentry, and run in-house crews for the core trades — electrical, plumbing, drywall, painting, and flooring — subbing specialty MEP, fire, and audio-visual to vetted partners. One project manager owns the schedule, so the team that scopes the work is the team that delivers it.
Do you do tenant improvements in occupied buildings?
Yes — Class A office TI, white-box conversions, retail build-outs, and MEP retrofits, sequenced around tenants who can't tolerate a Monday-morning surprise. In corridors like El Segundo's aerospace campuses and Continental Boulevard, holding the schedule against a fixed move-in date is most of the job, and it's what we're built for.
Can one company handle design, construction, and management?
That's the DECOMA model since 1978 — design, construct, and manage under one roof. Single-point accountability is why our commercial jobs land on budget: the people who plan the work carry it through permit, self-perform the build, and — when you want it — run the building afterward through our property-management arm.
Who has DECOMA built for?
Studios, aerospace, cities, healthcare, and retail — Walt Disney Imagineering, McDonnell Douglas, Northrop, 3M, Westfield, and the City of Torrance among them. We rehabilitated the Inner City Arts campus for the Mark Taper Foundation and performed life-safety work at the Pritikin Longevity Center. The full list is on our client page, and most of the work is repeat.
How do you handle permits across different South Bay cities?
Every city here permits on its own — Torrance Building & Safety at 3031 Torrance Blvd is not LA County, El Segundo turns TI plans faster than the City of LA, and Palos Verdes layers in its own review. We draw to each city's conventions up front and run the corrections cycle directly, which is where schedules are usually won or lost.

What we do

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Practice

Trades

Specialty

Talk to a contractor

Tell us about your project.

One business day for a scope, timeline, and budget range. CSLB #375508 A/B.

Request consultation(310) 418-0258