• Culver City
  • Downtown LA
  • Beverly Hills
  • Santa Monica
  • Los Angeles
  • Pacific Palisades

Structural engineers since 1978

Whether you’re upgrading an existing structure or building from the ground up, Peter T. Erdelyi & Associates, Inc has the expertise to oversee your project through completion. We have designed more than 10,000 structures in the Los Angeles area over the past four decades; from apartment buildings to new single family homes to additions and remodels both for residential and commercial clients. Our team of professional engineers, drafters, expeditors and project staff will deliver plans that withstand the test of time.


  • Structural engineering
  • Seismic retrofit
  • Peer review
  • Structural evaluation & site visit
  • Building design & drafting
  • Permits & expediting
  • Expert witness

Project Portfolio

  • Residential
  • Commercial
  • Non-profit
  • New buildings
  • Remodel and addition
  • Seismic retrofit


  • Principals
  • Team
  • History
  • Contact info, location, hours