OpenFire
We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
September 2026
Top 5 fire investigation and expert witness firms in the United States
Of the 54 fire investigation and expert witness firms in the United States listed in the OpenFire directory in September 2026, these profiles were viewed most by people and AI assistants.
-
#1
Jensen Hughes
Fire safety experts at the forefront of hazard prevention.
Consultancy 21–100 people 73 officesBuilding safety disputes CFD modelling Compartmentation +13 moreHelsinki, Uusimaa · HQ View firm -
#2
Reax Engineering
Fire experts — building/fire code consulting and fire science.
Consultancy 1–5 people 1 officeCFD modelling Evacuation modelling Fire investigation +5 moreBerkeley, California View firm -
#3
J.S. Held
Global forensic consulting with a dedicated fire origin and cause practice.
Consultancy 100+ people Est. 1974 11 officesBuilding safety disputes Fire investigation Insurance & loss investigation +1 moreJericho, New York · HQ View firm -
Joint #4
AEI Corporation
Fire, explosion, electrical and chemical forensic engineers.
Consultancy 21–100 people Est. 2005 1 officeFire investigation Insurance & loss investigation Litigation supportLittleton, Colorado View firm -
Joint #4
Exponent
Engineering and scientific consultancy investigating fires and explosions.
Consultancy 100+ people Est. 1967 9 officesFire investigation Insurance & loss investigation Litigation supportMenlo Park, California · HQ View firm
Browse all firms in United States →
Firms are ranked by how often their OpenFire directory profile was viewed during the calendar month, by people and by AI assistants. Search-engine crawlers, other automated traffic and link previews are not counted. Firms with equal views share a rank.
A firm with offices in several countries, or working across several categories, is ranked in each of them on the same monthly total. A ranking is only published where enough firms are listed and viewed for it to be meaningful.
A ranking reflects interest in a firm's listing. It is not an endorsement, and it is not a check of a firm's competence, certification or accreditation.