CIDB Grading Explained: Which Tenders Can You Actually Bid For?

If you've ever seen a tender advert say "CIDB grade 5 CE or higher" and weren't sure whether that means you, this guide is for you. Here's what CIDB grading is, the contract values each grade lets you tender for, and how to move up — in plain English.

1. What CIDB grading is

The Construction Industry Development Board (CIDB) maintains a national Register of Contractors. Every registered contractor is given a grading designation made up of a number (1–9) and a class-of-works code (letters such as GB, CE, EB). The number tells the public buyer the largest contract value you're allowed to tender for; the letters tell them what kind of work you're registered to do.

For most public-sector construction in South Africa, you must be CIDB-registered to tender, and you must hold the grade the tender calls for. It exists so that organs of state award work to contractors with the demonstrated financial and works capacity to deliver it.

2. Classes of works — what the letters mean

The letters describe the type of construction work. The most common classes contractors encounter are:

Match the class to the work: a tender to build a school will call for GB; a stormwater or roads project will call for CE. Registering in the right class for the work you actually do is essential.

3. The grades and the contract values they allow

The grade number is the key: it sets the maximum tender value you may bid. Grades rise roughly by an order of magnitude as you climb. The exact rand thresholds are set by the CIDB and are adjusted over time, so always confirm current figures on the official CIDB register — but the structure looks like this:

4. How to read a tender's CIDB requirement

A tender advert will state something like: "Only contractors with a CIDB grading of 5 CE or higher may tender." To bid, you need:

• Registration in the correct class (CE in this example), and
• A grade equal to or higher than the one stated (5, 6, 7, 8 or 9).

Some tenders allow a grade lower if you're registered on a development programme (often shown as a grade with a "PE" — potentially emerging — designation). If in doubt, ask the tender contact before spending days pricing a bid you're not eligible to submit.

5. How to upgrade your CIDB grade

You move up by proving two things to the CIDB:

1. Financial capability — available capital and annual turnover at the level the higher grade requires.
2. Works capability — a completed project (or projects) of a value that supports the higher grade in that class of works.

The chicken-and-egg problem is real: you need bigger completed jobs to upgrade, but you need a higher grade to win bigger jobs. The way through is to maximise the work you win at your current grade, build a track record, and upgrade as soon as you qualify. Which brings us to the point most contractors miss.

6. Winning more at your current grade

Your grade caps the size of tender you can bid — it says nothing about how many you bid or how well you price them. The contractors who climb fastest are the ones who tender on everything they qualify for and price it accurately and quickly.

That's the bottleneck for most small firms: pricing a BOQ by hand takes days, so you only bid a handful of jobs a month. Bid more, win more, upgrade sooner. This is precisely where TenderGenie helps — it prices your BOQ from live South African supplier rates in under an hour, so you can submit far more compliant, well-priced bids at your grade. (New to pricing? Start with our step-by-step guide to pricing a BOQ.)

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