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CIDB class codes

These pages explain each CIDB work class and connect it to the live GradeCheck contractor sample.

General Building

GB - 338 contractors in sample

Civil Engineering

CE - 296 contractors in sample

Electrical: Public Installations

EP - 167 contractors in sample

Mechanical Engineering

ME - 161 contractors in sample

Specialist: Roofing & Waterproofing

SO - 101 contractors in sample

Electrical: Building Installations

EB - 85 contractors in sample

Specialist: Piling & Foundations

SQ - 83 contractors in sample

Specialist: Structural Steelwork

SH - 46 contractors in sample

Specialist: Lifts & Escalators

SK - 32 contractors in sample

Specialist: Demolition

SB - 27 contractors in sample

Specialist: Painting & Decorating

SN - 26 contractors in sample

Specialist: Formwork & Falsework

SF - 21 contractors in sample

Specialist: Landscaping

SL - 9 contractors in sample

SE

SE - 8 contractors in sample

SI

SI - 8 contractors in sample

Specialist: Glazing

SG - 5 contractors in sample

SD

SD - 3 contractors in sample

SC

SC - 1 contractors in sample

SJ

SJ - 1 contractors in sample

Trust and source context

GradeCheck is an independent CIDB contractor verification and research platform for South Africa.

Contractor records are sourced from the CIDB Register of Contractors and presented with verification links, registration status, grading history, and capture timestamps.

GradeCheck is not affiliated with the Construction Industry Development Board. Final contractor confirmation should always be completed against the official CIDB source.

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How to Verify a CIDB Contractor

Use the methodology and data update pages to understand how GradeCheck interprets contractor records and when the local registry snapshot was last refreshed.