DTL offers inspection services of new building as well as renovation construction as required by federal, state, and local municipalities for compliance to project plans, specifications, codes and regulations.

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Special Inspection Agency

A special inspection agency is a unique organization that enforces strict quality control and assurance procedures through the special inspectors that it employs. All our special inspectors possess specific professional licenses, certifications, or both to perform independent inspections of critical structural and life-safety components while building construction. In order to maintain A2LA #3883.01 accreditation, DTL and independent senior representatives of DTL management regularly conduct external and internal audits. These reviews verify and assure that DTL remains qualified to carry out the technical responsibilities of individual inspections for a building owner.

General Building Construction
  • Wall Panels, Curtain Walls, and Veneers
  • Exterior Insulation Finish Systems (EIFS)
  • Chimneys
  • Flood Hazard Mitigation
  • Photoluminescent Exit Path Markings
  • Energy Code Compliance
Fire Protection Systems & Fire-Resistant Construction
  • Sprayed Fire-resistant Materials
  • Smoke Control Systems
  • Standpipe Systems and Sprinkler Systems
  • Firestop, Draftstop, and Fireblock Systems
  • Emergency Power Systems (Generators)

Plumbing & Mechanical Systems
  • Mechanical Systems
  • Fuel-Oil Storage and Fuel-Oil Piping Systems
  • Site Storm Drainage Disposal and Detention Facilities
  • Heating Systems
Structural Materials & Construction Operations
  • Structural Steel – Welding, Erection & High-Strength Bolting
  • Structural Cold-formed Steel
  • Concrete – Cast-in-place & Precast
  • Concrete Testing
  • Prestressed Concrete
  • Masonry
  • Wood Construction – Prefabricated Wood I-joists and
  • Metal-plate-connected Wood Trusses
  • Soils – Site Preparation
  • Soils – Fill Placement, In-place Density
  • Pile Foundations and Drilled Pier Installation
  • Pier Foundations
  • Structural Safety – Stability and Mechanical Demolition
  • Excavation – Sheeting, Shoring, and Bracing
  • Seismic Isolation Systems