Lerch Bates

Total Building Performance

Website

About the firm

Lerch Bates is a global multidisciplinary technical consultancy delivering building science, forensic engineering, vertical transportation, facade engineering, and building logistics services at every stage of a building's life. Founded in 1951 and operating across the US and internationally, it serves architects, general contractors, developers, institutional owners, and portfolio managers with expertise spanning enclosure design and testing, structural assessments, property condition assessments, pedestrian circulation consulting, and parking. Lerch Bates acquired Studio NYL in late 2025, further expanding its building enclosure capabilities.

Established
1951
Team
Large
Firm type
Forensic Engineering · Structural Engineering

Capabilities

Building Enclosures

Service website

Design, consultation, commissioning, and testing of building enclosures including facades, waterproofing, windows, and air barriers.

  • Window Testing
  • Air Barrier Testing
  • Onsite Quality Assurance Observations
  • Building Envelope Commissioning
  • Enclosure Design & Consultation
  • Waterproofing Design & Consultation
  • Bird Control & Safety

Facade Engineering & Access

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Engineering design and operational planning for building facades and facade access systems.

  • Facade Engineering
  • Facade Access Design & Operation

Forensics & Investigations

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Industry-leading forensic engineering, property loss investigations, and expert witness services for building failures and insurance claims.

  • Expert Witness Services
  • Property Loss Investigations
  • Property Condition Assessments

Structural Assessments & Engineering

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Structural assessments, condition surveys, and engineering for existing buildings.

Vertical Transportation

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Elevator, escalator, and other vertical transportation consulting for design, modernization, and performance management.

Building Logistics

Service website

Operational consulting for how buildings move people, goods, and waste, covering pedestrian circulation, loading docks, materials management, and waste streams.

  • Pedestrian Circulation
  • Materials Management
  • Waste Stream Management
  • Loading Docks
  • Parking & Accessibility
  • Wayfinding

Parking Consulting

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Parking planning, design, and accessibility consulting for complex commercial and institutional facilities.

Testing & Commissioning

Service website

Diagnostic testing and commissioning services for building enclosures and systems.

Industries

Commercial · Land Development · Education · Hospitality · Government · Insurance

Projects

Lerch Bates - Engineering Firms