Construction Expert Witness Services – Specializing in Scheduling and Delay Damage Analysis Solution
Helping you with construction delays!
What we Offer
HPM Consultants provides industry-leading expert witness services specializing in construction scheduling and delay damages.
With extensive experience in resolving complex construction disputes, the team offers comprehensive delay claim analysis for owners, ensuring clarity in assessing claims and determining accountability.
For contractors, HPM formulates delay claims with precision, focusing on presenting clear, evidence-based justifications.
Whether serving as expert witnesses in litigation or providing pre-litigation consulting, HPM delivers trusted guidance tailored to the unique needs of each project. Combining technical expertise with a deep understanding of industry standards, HPM Consultants is committed to helping clients achieve fair and effective dispute resolutions.

Delay and Disruption Analysis

ABOUT
Construction Expert Witness Services
HPM Consultants is a leading provider of construction expert witness services, specializing in scheduling, delay damages, and related disciplines.
Established in 2007, the firm has evolved from a boutique consultancy into a globally recognized leader in resolving complex construction disputes.
HPM’s journey began with a focus on addressing project delays in complex construction projects, resulting in the development of an innovative and streamlined delay analysis method. This method has earned international acclaim, been featured at major industry conferences, and highlighted in published books. Today, HPM Consultants continues to support clients with expert witness services and a highly skilled team.
Our experts

Dr Hendrik F. Prinsloo

Ted Bumgardner
With over 40 years of extensive construction management and construction litigation experience, Ted Bumgardner brings a thorough knowledge of all aspects of commercial, municipal and residential construction, forensic investigation, and construction defect litigation. Ted has been designated as an expert witness in over 800 construction litigation cases involving contractual claims, delay, cost of repair, defects investigation and contractor standard of care.
Services
Delays and disruptions often result in damages for the parties involved. Our expert knowledge in the quantification of damages will assist you in clearly demonstrating the financial consequences of delays and disruptions.
Testimonails
what Our Clients say
Hendrik and I worked together on a binding arbitration involving three major commercial buildings in downtown Los Angeles. His testimony in defence of my client was instrumental in achieving a successful outcome. Hendrik is exceptionally knowledgeable in his field, and I would not hesitate to use his services again.
Patrick Au
Partner, Bremer Whyte Brown & O’Meara
After only one week of Hendrik’s involvement, we were amazed by the progress made on our project.
Kim MacEwan
Director, Tag! Museum, St. Augustine, FL
Having worked on projects across the globe for more than 30 years, I can say that Dr Prinsloo is one of the few specialists with the expertise and skill to successfully manage highly complex mega construction projects.
Blair Parkin
Principal, TeeCom, Oakland, CA
Dr Hendrik Prinsloo’s knowledge and understanding of construction delays would be of remarkable value to any client.
Prof Joshua Pienaar
Pro Vice-Chancellor, CQ University, Australia
Dr Prinsloo’s expertise has made a significant impact on the construction industry. His groundbreaking work in construction delay analysis is now incorporated into professional training programmes.
Tom Hennes
Principal, Thinc, New York, NY
Case Studies
Expert Witness Service For Multi-million Delay
- Claims, Featured, Residential
HPM Consultants was retained to evaluate delays affecting the Dolores Huerta Gardens Apartment project arising from extended Southern California Edison (SCE) lead times and additional Solar As-Built Approval requirements introduced during construction. The dispute focused on whether these events qualified as excusable delays under the contract and whether the contractor was entitled to additional time-related compensation.
- Public / Municipal
HPM Consultants was hired to evaluate delays in the City of Ventura Veterans Project and determine the causes of the late completion. The review focused on whether owner-related issues, including switchgear and design delays, impacted the project schedule. The project completion date was extended by about 348 days beyond the original schedule. Questions also arose about whether contractor activities caused concurrent delays or whether the owner-related delays controlled the critical path.
- Public / Municipal
HPM Consultants was retained by the contractor of a municipal building to evaluate alleged project delays associated with construction activities. The analysis focused on determining whether soil remediation delayed project completion or whether other contractor-related events were responsible for the extended completion date.
The project involved multiple concurrent construction and tenant-improvement activities that experienced numerous schedule revisions, redesigns, and added work scopes. Soil remediation impacted completion, prompting an independent forensic schedule review by HPM Consultants.
- Multi-family
HPM Consultants was retained to evaluate delays affecting the Bowery Bayside Multi-family Apartment Buildings project, including extended punch-list corrections, work slowdowns, and prolonged completion activities. The dispute focused on determining the causes of significant schedule overruns and whether contractor performance and coordination issues impacted substantial project completion.
- Commercial
HPM Consultants was retained to evaluate delay claims associated with the Lakeside Equestrian Park project, including allegations related to building permits, sewer right-of-way access, and sewer connection design. The dispute focused on whether these issues delayed project completion and whether the contractor was contractually entitled to additional time and compensation.
- Commercial
HPM Consultants was retained in connection with River Street Marketplace Commercial Development delay dispute to determine whether alleged delay events materially impacted overall project completion. The assignment focused on identifying actual delay drivers, evaluating critical path impacts, and distinguishing alleged delays from other concurrent project activities.
recent from Our Blog
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Construction disputes often develop when project delays are not identified, tracked, or addressed properly. By the time disagreements reach formal claims or litigation, the underlying issues may have existed for months. This is why schedule analysis plays such an important role in successful project management. A well-maintained schedule does more than track progress. It helps project […]
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Project profitability depends on completing work efficiently, managing costs, and meeting schedule expectations. A construction delay can disrupt all three. While delays are often viewed as scheduling issues, their financial impact can be significant. Even a relatively short delay can increase expenses, reduce productivity, and place pressure on project margins. Understanding how delays affect profitability helps […]