Every fact below carries a source link and an as-of date. Informational only. Ownership statements are limited to primary announcements and filings.
- Headquarters
- New York, New YorkSource: desimone.com · As of 2026-10-11
- Founded
- 1969Source: desimone.com/about · As of 2026-10-11
- Employees
- Over 700 employees, per the firm's siteSource: desimone.com/about · As of 2026-10-11
- Website
- desimone.comSource: desimone.com · As of 2026-10-11
- Ownership type
- Ownership not published
Legal name, DBA and former names
- DeSimone Consulting Engineering is the firm’s name.Source: desimone.com · As of 2026-10-11
Offices
- DeSimone has 22 offices across 4 continents.Source: desimone.com/offices · As of 2026-10-11
Employee count or band
- Over 700 employees, per the firm's site.Source: desimone.com/about · As of 2026-10-11
Services and markets
- DeSimone provides structural engineering, façade and building enclosure, vertical transportation, steel detailing, and advisory services to clients around the world.Source: desimone.com/offices · As of 2026-10-11
Leaders
- Stephen V. DeSimone, Chairman and CEO.Source: desimone.com · As of 2026-10-11
- Kelly Houlihan, Vertical Transportation Leader.Source: desimone.com · As of 2026-10-11
- Kurt Schieszer, Vertical Transportation Leader.Source: desimone.com · As of 2026-10-11
Deals
- 2026-09-29: DeSimone acquired ESS Detailing, expanding its presence in India.Source: desimone.com · As of 2026-10-11
Rankings and awards
- Listed in the ENR 2026 Top 500 Design Firms.Source: enr.com/toplists/2026-top-500-design-fi… · As of 2026-10-05
Sources of record
Ownership tag: Ownership not published. Profiles are informational, compiled from public sources linked above. Firms may request corrections. A listing is not an endorsement.
