Company lists · Data refreshed September 2026

Top 25 Construction accident investigation firms based in the United States

RevenueBase identified 504 construction accident investigation firms headquartered in the United States as of September 2026 and tracks 6,199 professional contacts across them, including 2,779 with verified work emails. New York is the largest hub.

This list covers construction accident investigation firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
504Companies
6,199Contacts tracked
2,779Verified emails
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The 25 largest construction accident investigation firms based in the United States

Ranked by team size
Top 25 of 504 construction accident investigation firms based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to construction accident investigation firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceAurora, IL, United StatesHQ checked Sep 16, 2026201-500480 contacts →

Partial evidence

“Engineering Systems Inc.(ESi) is a forensic engineering and scientific investigation firm committed to providing actionable solutions to industry and technical challenges through…”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceChicago, IL, United StatesHQ checked Sep 16, 2026201-500376 contacts →

Indirect evidence

“Envista Forensics is the global leader in providing comprehensive forensic consulting and engineering services.”

Source: RevenueBase Database · checked Sep 16, 2026
3Partial evidenceWalnut Creek, CA, United StatesHQ checked Sep 16, 2026201-500332 contacts →

Partial evidence

“MKA International, Inc.(MKA) a leading multidisciplinary Construction & Engineering Consulting firm, providing seamless support and specialized services to a wide variety of…”

Source: RevenueBase Database · checked Sep 16, 2026
4Partial evidenceColumbus, OH, United StatesHQ checked Sep 16, 2026201-500297 contacts →

Partial evidence

“Established in 1970, S-E-A is a recognized worldwide leader in forensic analysis and investigation.”

Source: RevenueBase Database · checked Sep 16, 2026
5Partial evidenceCarlsbad, CA, United StatesHQ checked Sep 16, 202651-200196 contacts →

Partial evidence

“Since 1989, MC’s team of professional consultants have leveraged their extensive construction backgrounds to deliver industry-leading construction consulting and forensic…”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceFlower Mound, TX, United StatesHQ checked Sep 16, 202651-200157 contacts →

Indirect evidence

“Haag is an employee-owned forensic engineering & technical consulting firm, since 1924.”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidenceEast Providence, RI, United StatesHQ checked Sep 16, 202651-200154 contacts →

Partial evidence

“Founded in 1954, Halliwell is a premier multi-service Engineering, Forensic Architecture, and Construction professional services firm providing comprehensive loss consulting to…”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 16, 2026201-500103 contacts →

Indirect evidence

“Established in Site Safety is a national safety consulting, training, and management organization.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceCastle Rock, CO, United StatesHQ checked Sep 16, 202611-5099 contacts →

Indirect evidence

“Headquartered in Colorado with a nationwide reach, Keystone Experts and Engineers is a premier forensic firm specializing in commercial and residential structures.”

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidencePenns Park, PA, United StatesHQ checked Sep 16, 202651-20096 contacts →

Indirect evidence

“For over 30 years, ARCCA has been providing expert scientific and engineering solutions.”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceSugar Land, TX, United StatesHQ checked Sep 16, 202651-20090 contacts →

Indirect evidence

“ProNet Group, Inc is a multi-disciplinary forensic engineering and consulting firm that has been an industry leader since 1990.”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceMetairie, LA, United StatesHQ checked Sep 16, 202651-20072 contacts →

Indirect evidence

“Since its inception in 2006, U.S.”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 16, 202611-5069 contacts →

Indirect evidence

“Vehicle collisions are stressful.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceAbington, PA, United StatesHQ checked Sep 16, 202611-5066 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceCentennial, CO, United StatesHQ checked Sep 16, 202651-20064 contacts →

Indirect evidence

“Questions Answered.”

Source: RevenueBase Database · checked Sep 16, 2026
16Partial evidenceAnnapolis, MD, United StatesHQ checked Sep 16, 202611-5058 contacts →

Partial evidence

“CED Technologies, Inc.(CED) is a leading engineering company specializing in forensic engineering, accident reconstruction and expert witness services for over 30 years.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidencePlano, TX, United StatesHQ checked Sep 16, 202651-20058 contacts →

Indirect evidence

“Established in 1994, Nelson Forensics, LLC has developed a rock-solid reputation with property owners, insurance companies, and law firms nationwide based on our commitment to…”

Source: RevenueBase Database · checked Sep 16, 2026
18Partial evidenceLaguna Hills, CA, United StatesHQ checked Sep 16, 202651-20058 contacts →

Partial evidence

“MEA Forensic Engineers & Scientists is a multi-disciplinary forensic investigations firm.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceNovi, United StatesHQ checked Sep 16, 202611-5056 contacts →

Indirect evidence

“Engineering Consulting Services”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 16, 202611-5050 contacts →

Indirect evidence

“Founded in 1995, Safety Resources, Inc.”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceWest Palm Beach, FL, United StatesHQ checked Sep 16, 202611-5046 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceParsippany, NJ, United StatesHQ checked Sep 16, 202611-5044 contacts →

Partial evidence

“At National Forensic Consultants, Inc.®, we specialize in multi-disciplinary forensic investigation, offering comprehensive services to the legal, insurance, product…”

Source: RevenueBase Database · checked Sep 16, 2026
23Indirect evidenceBaton Rouge, LA, United StatesHQ checked Sep 16, 2026201-50036 contacts →

Indirect evidence

“We understand that you have a job to do, but the urgency of a job can often lead to personnel taking unsafe actions.”

Source: RevenueBase Database · checked Sep 16, 2026
24Indirect evidenceOxnard, CA, United StatesHQ checked Sep 16, 202611-5035 contacts →

Indirect evidence

“Mecanica Scientific Services Corporation is a scientific and engineering services consulting firm providing engineering and scientific analysis services to the legal, automotive…”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceWillowbrook, IL, United StatesHQ checked Sep 16, 202611-5035 contacts →

Partial evidence

“Raths, Raths & Johnson, Inc.(RRJ) is a nationally recognized engineering, architecture, and forensics consulting firm that provides investigative, design, repair, and testing…”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 504 construction accident investigation firms based in the United States

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Construction accident investigation firms based in the United States at a glance

As of Sep 16, 2026
44.8%Verified-email coverage
12.3Average contacts per company
1-10Median size (employees)
2.2%Largest-city concentration · New York
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
320
11-50
143
51-200
31
201-500
8
501-1,000
1
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 504 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among construction accident investigation firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “construction accident investigation firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names construction accident investigation firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among construction accident investigation firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 2,779 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names construction accident investigation firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many construction accident investigation firms are there based in the United States?

RevenueBase identified 504 construction accident investigation firms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Engineering Systems Inc. ESI, headquartered in Aurora, tops this list with the largest team on record.

Which city has the most construction accident investigation firms?

New York leads with 11 headquartered companies, followed by Houston (10) and Tampa (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,779 verified decision-maker contacts tracked across these 504 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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Related lists

Construction accident investigation firms by geography

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.