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Top Structural Engineering Firms in Orange County

Ratings Updated: January 9, 2026
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0 Leaders 15 Contenders

15 Companies

Country: United States
State: California
City: Orange County
Engineering Focus: Structural Engineering

List of the Top Orange County Structural Engineering Services

  • Alpha Structural, Inc. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Yorba Linda, CA

    Services provided

    50% Engineering
    25% Commercial Development
    25% Commercial Property Management

    Focus Areas

    100% Structural Engineering

    Launched in 1993, Alpha Structural, Inc. Is a small Engineering company. Their team focuses on Engineering and Commercial Property Management.

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  • 99California Estimators Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Costa Mesa, CA

    Services provided

    20% Engineering
    80% Commercial Development

    Focus Areas

    25% Structural Engineering
    25% Civil Engineering
    25% Electrical Engineering +1
    25% Industrial Engineering

    99California Estimators is a Commercial Development company. They offer Commercial Development and Engineering and were established in 2013.

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  • Thompson Pipe Group Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Rialto, CA

    Services provided

    50% Engineering
    50% Commercial Property Management

    Focus Areas

    100% Structural Engineering

    Thompson Pipe Group is a Commercial Property Management and Engineering company established in 1972. The midsize team focuses on Commercial Property Management and Engineering.

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  • EZ Plans Architects Logotype

    Not yet reviewed

    $5,000+
    $100 - $149 / hr
    2 - 9
    Los Angeles, CA

    Services provided

    25% Engineering
    50% Architectural Design
    25% Interior Design

    Focus Areas

    25% Structural Engineering
    25% Civil Engineering
    25% Electrical Engineering +1
    25% Mechanical Engineering

    Launched in 2008, EZ Plans Architects, a small Architectural Design company, is headquartered in Los Angeles, California. Their team focuses on Architectural Design and Interior Design.

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  • Development One, Inc. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Santa Ana, CA

    Services provided

    25% Engineering
    50% Architectural Design
    25% Interior Design

    Focus Areas

    20% Structural Engineering
    20% Civil Engineering
    20% Electrical Engineering +2
    20% Geotechnical Engineering
    20% Mechanical Engineering

    Development One, Inc. Is an Architectural Design company launched in 1987. Headquartered in Santa Ana, California, the team offers Architectural Design and Interior Design.

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  • Ronin International LLC Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Los Angeles, CA

    Services provided

    40% Engineering
    20% Cybersecurity
    20% IT Managed Services +1
    20% Logistics & Supply Chain Consulting

    Focus Areas

    20% Structural Engineering
    40% Aerospace Engineering
    20% Electrical Engineering +1
    20% Mechanical Engineering

    Ronin International LLC is an Engineering company. They are headquartered in Huntsville, Alabama and Los Angeles, California and have small team. They focus on Engineering and Cybersecurity.

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  • Puzzle Piece Technologies Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Valencia, CA

    Services provided

    25% Engineering
    50% IT Strategy Consulting
    25% Other IT Consulting and SI

    Focus Areas

    50% Structural Engineering
    50% Electrical Engineering

    Puzzle Piece Technologies is a small IT strategy consulting company headquartered in Valencia, California. The team provides IT strategy consulting and other IT consulting and SI.

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  • CASC Engineering and Consulting Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Colton, CA

    Services provided

    30% Engineering
    40% Commercial Development
    10% Architectural Design +2
    10% Corporate Training & Coaching
    10% Video Production

    Focus Areas

    10% Structural Engineering
    50% Civil Engineering
    30% Geotechnical Engineering +1
    10% Environmental Engineering

    CASC Engineering and Consulting is a Commercial Development company. Their small team is in Colton, California. Their services include Commercial Development and Engineering.

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  • Partner Engineering & Science Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    1,000 - 9,999
    Torrance, CA

    Services provided

    20% Engineering
    60% Commercial Development
    10% Business Consulting +1
    10% Financial Consulting

    Focus Areas

    10% Structural Engineering
    40% Civil Engineering
    20% Environmental Engineering +2
    20% Geotechnical Engineering
    10% Industrial Engineering

    Launched in 2007, Partner Engineering & Science is a Commercial Development company. The large team specializes in Commercial Development and Engineering.

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  • Ayres Associates Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    250 - 999
    Santa Clarita, CA

    Services provided

    50% Engineering
    50% Commercial Development

    Focus Areas

    20% Structural Engineering
    20% Civil Engineering
    20% Electrical Engineering +2
    20% Environmental Engineering
    20% Mechanical Engineering

    Commercial Development and Engineering company Ayres Associates was established in 1959. The midsize team specializes in Commercial Development and Engineering.

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  • CESCO Engineering Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Marina del Rey, CA

    Services provided

    50% Engineering
    50% Commercial Development

    Focus Areas

    30% Structural Engineering
    40% Civil Engineering
    30% Environmental Engineering

    CESCO Engineering, a small Commercial Development and Engineering company, is located in Marina del Rey, California. Their services include Commercial Development and Engineering.

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  • Atienza Engineering, Inc. (AE, Inc.) Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Los Angeles, CA

    Services provided

    70% Engineering
    30% Commercial Development

    Focus Areas

    30% Structural Engineering
    35% Civil Engineering
    35% Electrical Engineering

    Launched in 2016, Atienza Engineering, Inc. (AE, Inc.) is an Engineering company. Their team provides Engineering and Commercial Development.

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  • Challman Engineering Inc Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Palmdale, CA

    Services provided

    40% Engineering
    40% Commercial Development
    20% Architectural Design

    Focus Areas

    30% Structural Engineering
    70% Civil Engineering

    Challman Engineering Inc is a Commercial Development company. They are based in Palmdale, California, and their services include Commercial Development and Engineering.

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  • Hariya Inc Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Loma Linda, CA

    Services provided

    30% Engineering
    30% Commercial Development
    20% Architectural Design +1
    20% Graphic Design

    Focus Areas

    50% Structural Engineering
    50% Civil Engineering

    Hariya Inc is a Commercial Development company. In Loma Linda, California, the company specializes in Commercial Development and Engineering.

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  • Anvil Steel Corporation Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Gardena, CA

    Services provided

    35% Engineering
    35% Product Design
    30% Architectural Design

    Focus Areas

    100% Structural Engineering

    Anvil Steel Corporation, a Product Design company, is in Gardena, California and Shafter, California. The team provides Product Design and Engineering.

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List of the Top Orange County Structural Engineering Services

  1. Alpha Structural, Inc. Logotype

    Alpha Structural, Inc.

    Undisclosed
    Undisclosed
    10 - 49
    Yorba Linda, CA

    Ability to deliver

    5.3/40.0
    0/20 Reviews
    0/10 Clients & Experience
    5.3/10 Market Presence

    Service focus

    50% Engineering
    100% Structural Engineering
    50% Other
    View Profile Visit Website
  2. 99California Estimators Logotype

    99California Estimators

    Undisclosed
    Undisclosed
    2 - 9
    Costa Mesa, CA

    Ability to deliver

    4/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4/10 Market Presence

    Service focus

    20% Engineering
    25% Structural Engineering
    80% Other
    View Profile Visit Website
  3. Thompson Pipe Group Logotype

    Thompson Pipe Group

    Undisclosed
    Undisclosed
    50 - 249
    Rialto, CA

    Ability to deliver

    8.5/40.0
    0/20 Reviews
    2.4/10 Clients & Experience
    6.1/10 Market Presence

    Service focus

    50% Engineering
    100% Structural Engineering
    50% Other
    View Profile Visit Website
  4. EZ Plans Architects Logotype

    EZ Plans Architects

    $5,000+
    $100 - $149 / hr
    2 - 9
    Los Angeles, CA

    Ability to deliver

    8.3/40.0
    0/20 Reviews
    2.2/10 Clients & Experience
    6.1/10 Market Presence

    Service focus

    25% Engineering
    25% Structural Engineering
    75% Other
    View Profile Visit Website
  5. Development One, Inc. Logotype

    Development One, Inc.

    Undisclosed
    Undisclosed
    10 - 49
    Santa Ana, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    25% Engineering
    20% Structural Engineering
    75% Other
    View Profile Visit Website
  6. Ronin International LLC Logotype

    Ronin International LLC

    Undisclosed
    Undisclosed
    2 - 9
    Los Angeles, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    40% Engineering
    20% Structural Engineering
    60% Other
    View Profile Visit Website
  7. Puzzle Piece Technologies Logotype

    Puzzle Piece Technologies

    Undisclosed
    Undisclosed
    2 - 9
    Valencia, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    25% Engineering
    50% Structural Engineering
    75% Other
    View Profile Visit Website
  8. CASC Engineering and Consulting Logotype

    CASC Engineering and Consulting

    Undisclosed
    Undisclosed
    10 - 49
    Colton, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    30% Engineering
    10% Structural Engineering
    70% Other
    View Profile Visit Website
  9. Partner Engineering & Science Logotype

    Partner Engineering & Science

    Undisclosed
    Undisclosed
    1,000 - 9,999
    Torrance, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    20% Engineering
    10% Structural Engineering
    80% Other
    View Profile Visit Website
  10. Ayres Associates Logotype

    Ayres Associates

    Undisclosed
    Undisclosed
    250 - 999
    Santa Clarita, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    50% Engineering
    20% Structural Engineering
    50% Other
    View Profile Visit Website
  11. CESCO Engineering Logotype

    CESCO Engineering

    Undisclosed
    Undisclosed
    2 - 9
    Marina del Rey, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    50% Engineering
    30% Structural Engineering
    50% Other
    View Profile Visit Website
  12. Atienza Engineering, Inc. (AE, Inc.) Logotype

    Atienza Engineering, Inc. (AE, Inc.)

    Undisclosed
    Undisclosed
    2 - 9
    Los Angeles, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    70% Engineering
    30% Structural Engineering
    30% Other
    View Profile Visit Website
  13. Challman Engineering Inc Logotype

    Challman Engineering Inc

    Undisclosed
    Undisclosed
    2 - 9
    Palmdale, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    40% Engineering
    30% Structural Engineering
    60% Other
    View Profile Visit Website
  14. Hariya Inc Logotype

    Hariya Inc

    Undisclosed
    Undisclosed
    2 - 9
    Loma Linda, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    30% Engineering
    50% Structural Engineering
    70% Other
    View Profile Visit Website
  15. Anvil Steel Corporation Logotype

    Anvil Steel Corporation

    Undisclosed
    Undisclosed
    10 - 49
    Gardena, CA

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    35% Engineering
    100% Structural Engineering
    65% Other
    View Profile Visit Website

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