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Multifamily General Contractor

Built With Quality and Passion.

GC West, under the leadership of CEO / President Barney Addamo, is the institutional expert in Southern California multifamily construction — a highly skilled and efficient team with seasoned skill in all aspects of the industry. From pre-development and design review, estimation, and preconstruction through construction operations, our core team brings substantial know-how whether the project is high-density urban infill, Type III or Type V construction, or master-planned community. GC West has an unparalleled track record in project safety and the completion of complex projects on time and within budget.

Explore the Portfolio
01/Philosophy
“We build it like we own it.”

Owner mindset isn't a slogan. It's the filter every decision passes through — every subcontractor call, every budget line, every specification that lands on the site. We measure our work the way an owner measures theirs: by what gets delivered, how it performs, and whether it stands up to scrutiny a decade later.

That's why discerning developers, institutional capital, and long-term partners keep coming back. We don't build for turnover. We build for long-term value.

02/Selected Work

Featured Projects

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03/By the Numbers

Scale, measured.

  • $0.00B
    Total Contract Value
    Delivered and under contract
  • 0+
    Units Delivered
    Across 30 completed projects
  • 0
    Projects Completed
    With 5 active projects underway
  • 0+
    Years Together
    Core team together since 2010
04/Trusted By

Institutional capital. Discerning owners. Seasoned architects.

The partners who have chosen GC West to deliver their multifamily communities — again and again.

Capital & Lenders
  • Wells Fargo
  • Northwestern Mutual
  • JP Morgan Chase
  • Pacific Western Bank
  • Bank of the Ozarks
  • First Republic Bank
  • California Bank & Trust
  • City National Bank
  • UMB Bank
  • Umpqua Bank
  • Bank of America
  • Kennedy Wilson
  • CapSource
  • Nationwide
  • BOKF
Developers & Owners
  • HomeFed
  • Greystar
  • Shea Properties
  • Sudberry Properties
  • ReyLenn Properties
  • R&V Management Corp
  • Morgan Group Development
  • Bridge Investment Group
  • Baywest Development
Architects
  • KTGY Group
  • Architects Orange
  • Humphreys & Partners
  • ARK Architects
  • MVE + Partners
  • Kephart
  • Bassenian Lagoni
  • Carrier Johnson
  • Rodriguez Associates
05/Capabilities

What We Do

01

General Contracting

Ground-up multifamily and mixed-use developments — podium, wrap, and slab-on-grade Type V and Type III apartment construction across Southern California.

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02

Preconstruction

Value engineering without compromise. A disciplined review of materials, methods, and assemblies to reduce cost while protecting design intent.

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03

Developer Services

Consider GC West your in-house team without the overhead — fast, disciplined early-stage evaluation for land acquisition and investment decisions.

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06/Where We Build

California and Colorado.

Every pin is a project. Hover the map to preview, click to explore the full portfolio.

Explore the interactive map