Meet Our Team

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Marc Arnold

Principal Consultant – Forensic Inspections & Building Code Compliance

  • Experience:

    Mr. Arnold has over 30 years of experience conducting forensic inspections of thousands of residential, commercial, and industrial buildings, as well as infrastructure. These inspections covered structural, mechanical, plumbing, and electrical systems. He has developed detailed plans and specifications for the rehabilitation of existing buildings, infrastructure improvements, and repairs. Recognized as an expert in Building Code interpretation and compliance, Mr. Arnold specializes in the International Conference of Building Officials (ICBO) published Building Codes. As a result, he was appointed to an ICBO examination development committee, where he contributed to the creation of testing materials for ICBO professional members and inspectors.

  • Education:

    University of Texas at Austin

  • Professional Registrations:

    Professional Civil Engineer, Texas, No. 77274 Texas Real Estate Commission Professional Inspector, No. 852 Building Inspection Engineering Certification Institute : Board Certified Building Inspection Engineer Texas Structural Pest Control Board : Licensed Wood Destroying Insect Inspector No. 30707 International Code Council : Appointed ICC Code Council Examination Develop Committee 2004 Master Code Professional No. 5177511 – MP Building Code Official No. 5177511 – B6 Building Inspector No. 5177511 – B5 Building Plans Examiner No. 5177511 – B3 Combination Inspector No. 5117511 – C8 Combination Plans Examiner No. 5177511 – C3 Residential Electrical Inspector No. 5177511 – E1 Electrical Inspector No. 5177511 – E5 Commercial Electrical Inspector No. 5177511 – E2 Electrical Code Official No. 5177511 – E6 Electrical Plans Examiner No. 5177511 – E3 Mechanical Inspector No. 5177511 – M5 Mechanical Code Official No. 5177511 – M6 Mechanical Plans Examiner No. 5177511 – M3 Plumbing Inspector No. 5177511 – P5 Plumbing Code Official No. 5177511 – P6 Plumbing Plans Examiner No. 5177511 – P3 Fire Inspector I No. 5177511 – G6Standard Coastal Construction Inspector No. 5177511 – C1

  • Professional Affiliations:

      National Society of Professional EngineersTexas Society of Professional EngineersNational Academy of Building Inspection EngineersInvestigative Engineers Association
A man in a white shirt is standing on a sidewalk in front of trees.

Terry Ortiz

President – LOC Consultants LLP (LOC Structural Division)

  • Experience:

    Mr. Ortiz brings extensive expertise in structural engineering management and design for a wide range of projects, including commercial, religious, institutional, industrial, bridge, and water/wastewater facilities. LOC also provides structural engineering services for custom residential architecture.


    His experience includes comprehensive project management, with a focus on coordinating multiple disciplines across various projects. Mr. Ortiz has conducted numerous condition surveys and structural forensic analyses, as well as the rehabilitation of existing structures. He is also experienced in site grading, drainage reviews, and remediation.


    As a former member of both the City of Austin Planning Commission and the Building Standards Commission, Mr. Ortiz is highly knowledgeable about the city’s building design and construction requirements. He also served as an Engineering Design Graphics instructor at Austin Community College for four years and has contributed to many construction management teams as a Structural Engineering Consultant.

  • Education:

    University of Texas at Austin


    B.S. Architectural Engineering (Block Emphasis: Structural Design and Construction Management), 1982.

  • Professional Registrations:

    • Registered Professional Engineer State of Texas No. 66204
  • Professional Affiliations:

    • Structural Engineers Association of Texas

Don Lipinski

Senior Engineer

  • Experience:

    Experienced Senior Engineer with a demonstrated history of working in the mechanical/industrial engineering industry. Strong engineering professional skilled in HVAC, Chilled Water, Heating Water, Steam, Process Exhaust, Plumbing, Utility Studies, and Energy Efficiency.  Adept in Project Management Planning, Scheduling, Budget Estimation, Procurement, Quality Control, and Quality Assurance.  Drives for results, and excels at multi-disciplinary coordination, design through construction.

  • Education:

    University of Texas at Austin


    B.S Mechanical Engineering, 2004


    University of Texas at Austin McCombs School of Business


    Business Foundations Certification Program, 2003

  • Professional Registrations:

    Licensed Professional Engineer – TX P.E. #102211


Milton E. Howard

Forensic Building Inspector

  • Experience:

    Mr. Howard’s expertise includes forensic inspections of thousands of residential, commercial, and infrastructure properties over the past 10 years. These inspections included assessments of structural, mechanical, plumbing, and electrical building aspects and systems. Prior to that time, he was a Texas Department of Transportation (DOT) design engineer.


  • Education:

    Texas Tech University


    B.S. in Civil Engineering from Texas Tech University, May 1971.

  • Professional Registrations:

    Registered Professional Engineer, Texas license number 39898

Doug Sommerdorf

Nondestructive Testing Specialist

  • Experience:

    Since 1985, Mr. Sommerdorf has performed nondestructive testing in the construction, fabrication, nuclear, fossil-fuel, and petrochemical industries. The types of nondestructive testing performed have been: Visual, dye penetrant, magnetic particle, ultrasonic, eddy-current, and radiographic. Mr. Sommerdorf has also performed extensive field documentation of existing facilities for LOC's structural condition assessments. His experience also includes inspections of structural systems designed by LOC for foundation and superstructures. His experience in construction started in 1981 with NPS Industries, Inc., performing visual and dye penetrant inspections of fabricated Class I and II and nuclear piping components.

  • Education:

    Associate of Applied Science (AAS) Welding Technology, Austin Community College, Austin, Texas, 1992 


    Two year Non-destructive Testing Program, Hutchinson Area Vocational Technical Institute, Hutchinson, Minnesota, 1981 

  • Professional Registrations:

    • Perform welding inspection services to include visual, and non destructive ultrasound methods. 
    • American Welding Society AWS/CWI Certified Welding Inspector, #91100831 
    • Perform site inspections for structural concrete construction 
    • American Society for Nondestructive Testing (ASNT) Level III – Liquid Penetrate, #159611 
    • Perform site inspections for structural steel construction 
    • Certificate of Completion- High-Strength Bolting of Steel Structures #265 
    • Perform site inspections for wood-framed and light gage construction
Frequently Asked Questions

Have any questions about our services? We're here to help.

  • Why is Arnold Investigative Engineering Inc. so popular?

    Arnold Investigative Engineering Inc. has gained popularity due to its exceptional engineering inspection services. Located in Austin, this leading firm has established a reputation for providing comprehensive engineering inspection services that cater to residential, commercial, and industrial clients. The company’s commitment to quality and thoroughness in its engineering inspection services is unmatched, making it a go-to choice for many. With a foundation dating back to 1992, the firm has amassed a wealth of experience and knowledge, ensuring its engineering inspection services are precise and reliable. Their ability to handle complex insurance investigations, alongside offering construction consulting, adds to their appeal. For those in need of expert advice and detailed assessments, Arnold Investigative Engineering Inc. remains a top choice, continuously proving why their engineering inspection services are second to none. With our reliable track record in engineering inspection services, we invite you to reach out to us today to experience our renowned services firsthand.

  • What types of properties do you inspect?

    We specialize in conducting thorough inspections of residential, commercial, and industrial properties. Our team is equipped to handle everything from single-family homes to multi-family dwellings and expansive industrial facilities. By leveraging our expertise, we ensure that every inspection caters to the specific needs of the property type, providing crucial insights into structural integrity and potential issues. Whether you're purchasing a property or need an insurance claim assessment, our services are tailored to meet your unique requirements. Contact us today to schedule a detailed inspection.

  • How can your expertise assist with insurance claims?

    Our firm offers specialized services in conducting insurance investigations for claims related to wind, water, storm, and fire damage. With our forensic engineering analysis, we provide detailed assessments that can support or refute damage claims. Our expert evaluations are critical for both property owners and insurance companies, ensuring a fair settlement process. By choosing our services, you gain access to comprehensive assessments that are rooted in engineering precision and expertise. Get in touch with our team to learn how we can assist you with your insurance claim needs.

  • Do you provide consulting for construction projects?

    Yes, we offer construction consulting services to assist with various phases of a building project. Our expertise in assessing structural integrity and potential risks enables us to provide valuable insights and recommendations. We work with architects, builders, and property owners to ensure that construction projects adhere to safety standards and quality benchmarks. Engage our consulting services to enhance the success of your construction endeavors by reaching out to us for a consultation today.

  • What makes your inspections thorough and reliable?

    Our team, led by Marc Arnold, a seasoned Professional Engineer, combines years of experience with the latest technology to deliver precise and comprehensive inspections. Every inspection includes a meticulous review of structural integrity and potential issues, drawing on our expertise in forensic engineering analysis. Our attention to detail ensures that no stone is left unturned, and our clients receive reports that are both clear and actionable. Discover the thoroughness and reliability of our inspections by contacting us now to schedule your property evaluation.

Engineering Inspection Services