Construction Expertise Grounded in Nearly Five Decades of Field Experience.

Since 1978, Bill O’Brallahan has worked extensively in residential and commercial construction throughout Southern California and continues to own and operate an active general contracting firm.

His expertise is grounded in nearly five decades of practical, hands-on construction experience—not simply the ability to locate and cite construction codes, standards, or manufacturer requirements.

Building codes can be researched. Technical standards can be quoted. Knowing how to properly apply them to actual construction conditions requires experience.

Over the course of his career, Mr. O’Brallahan has developed exceptionally broad experience involving construction methods and sequencing, multiple building trades, materials and building systems, workmanship, construction defects, repair methods, estimating, contractor practices, and the practical problems encountered during construction and remodeling.

In the early 1980s, he also founded and operated REI Services, a comprehensive home-inspection company, and was a certified member of the California Real Estate Inspection Association (CREIA). That experience further developed his ability to systematically investigate existing construction, identify deficiencies, and evaluate building components and systems.

Mr. O’Brallahan remains actively engaged in the construction industry and current with evolving construction methods, materials, products, manufacturer requirements, building codes, and accepted standards of care.

More Than Finding the Applicable Code

Construction disputes rarely involve a code section in isolation. The more important questions are often: What actually occurred in the field? Why did it occur? Was the work reasonably and properly performed? What requirements applied to those particular conditions? And what should a competent contractor or tradesperson have done?

Mr. O’Brallahan evaluates construction claims from that perspective. He combines physical evidence and site conditions with applicable codes, plans, specifications, manufacturer requirements, industry standards, and accepted construction practices to develop opinions that are technically supported and grounded in real-world construction experience.

His broad experience across residential and commercial construction also allows him to evaluate how multiple trades, materials, systems, and construction operations interact—an important consideration because construction failures frequently do not occur within the boundaries of a single trade.

Codes and standards provide the requirements. Nearly five decades in the field provide the experience necessary to understand and apply them.