CIDB grading explained: what your grade lets you bid on

The Construction Industry Development Board grades every contractor who wants public construction work in South Africa. No grade in the right class, no bid. It sounds bureaucratic, and it is, but the logic is simple enough: the state does not want a one-bakkie outfit winning a R50 million bridge it cannot finish, so it sorts contractors by the size of job they can actually deliver.

What the number and the letters mean

A CIDB designation is a grade plus a class. The grade runs 1 to 9. Grade 1 is for the smallest jobs and Grade 9 for the largest national infrastructure work, with each step up allowing a higher contract value. The class is the kind of work: CE is Civil Engineering, GB is General Building, EB and EP cover electrical, ME covers mechanical, SW is specialist works. So "6CE" means a Grade 6 civil engineering contractor.

One honest caveat. The exact rand ceiling attached to each grade gets revised by the CIDB every so often, and the figures have moved upward in recent years. Do not bid on the strength of a number you half-remember. Check the current tender-value range for your grade on the CIDB register before you assume a job is in reach.

How you get graded, and how you move up

You apply to the CIDB. Lower grades are mostly about your registration and financials. To climb, you have to show a track record of completed work and the financial capacity to carry bigger contracts, which is why most contractors step up a grade at a time rather than jumping. There is also a Potentially Emerging designation that lets a smaller contractor bid one grade higher on certain developmental tenders, a deliberate on-ramp for new firms.

Why it decides which tenders you see

Every public construction tender states the grading it requires. Bid below it and you are out before your price is read, which is the single most common way good builders waste a fortnight. So filter first.

Browse open tenders by CIDB grade and class, see the wider construction tenders market, or read how construction tenders work end to end. All free, no account.