NCA registration governs the company. DIT grade testing governs the person actually laying the blockwork - and on a building site that is the difference you live with.
Checking a contractor's NCA registration tells you the company is licensed to hold your contract. It tells you nothing about the person who will actually lay your blockwork, first-fix your wiring, or hang your doors.
That gap matters, because the quality you live with is produced by individual hands. A well-registered company staffed by untested labour produces exactly the workmanship you would expect.
Kenya has a national answer to this, and it is worth knowing about before you appoint anyone: grade testing by the Directorate of Industrial Training.
What DIT grade testing is
The Directorate of Industrial Training sits within the ministry responsible for labour and skills development, and among its functions is trade testing: assessing individual artisans against a defined national standard for their trade and awarding a graded certificate on the result.
The important word is assessed. A grade test is not attendance at a course and it is not a reference from a previous employer. It is a practical and theoretical examination of whether a person can actually do the work, measured against a published benchmark that is the same for everyone.
Trade tests are conventionally awarded in grades, with Grade I the highest and the lower grades representing progressively more basic competence. Certification is available across the trades that build a building: masonry, carpentry and joinery, plumbing, electrical installation, welding and fabrication, painting and decorating, among others.
Why it changes what you get
It converts a claim into a measurement
Every tradesman on every site in Kenya will tell you they are experienced. Very few statements are less falsifiable. A grade certificate replaces that claim with an assessment somebody else conducted against a standard you can look up.
The trades it covers are the trades that fail visibly
Consider what actually goes wrong in domestic and commercial construction:
- Masonry. Walls out of plumb, courses uneven, mortar joints inconsistent. None of it structural, all of it permanently visible.
- Plumbing. Falls set wrong so waste does not run, joints that weep behind a finished wall, pressure testing skipped.
- Electrical. Undersized cable, poor terminations, circuits that fail inspection — the one trade where bad work is genuinely dangerous rather than merely annoying.
- Carpentry and joinery. Doors that bind, ironmongery that does not line up, second fix that looks approximate.
Each of these is a competence problem, not a materials problem. You cannot specify your way out of it.
It shows up in what defects cost
There is a rhythm to defects on a badly-staffed site. The work is done, it is covered up, the problem appears at handover or a season later, and the remedy costs several times what doing it correctly would have cost — because the remedy includes taking apart the finished work in front of it.
Competent trades do not eliminate defects. They substantially reduce the class of defect that is expensive to fix.
What to ask a contractor
Are your tradesmen DIT grade-tested, and in which trades? A firm that trains and certifies its people will answer immediately, because it is a selling point they already use.
Are they directly employed or subcontracted? This is the follow-up that matters. A contractor can hold impeccable registration and still assemble a site from whoever is available that week. Directly employed trades mean the firm has a continuing relationship with the people doing your work — and a reason to invest in their certification.
Who supervises, and do they work for you? Certification raises the floor. Supervision is what keeps the work on standard day to day.
Can I see the certificates? For a significant project, this is a reasonable request.
Certification is a floor, not a ceiling
Some caveats, because overstating this would be its own kind of dishonesty.
A grade test measures competence at a point in time. It does not measure care, and it does not measure whether someone was rushed by a programme that was never realistic.
Some genuinely excellent tradesmen in Kenya are uncertified, having learned through long apprenticeship and simply never sat the test. Their absence of a certificate is not proof of incompetence.
But you, as a client, cannot tell the difference by looking. Certification is the mechanism available to you for distinguishing assessed competence from asserted competence before the work starts rather than after.
The connection to site safety
Competence is a safety control, not only a quality one.
A large share of serious construction incidents trace back to someone doing work they were never trained to do — improvising an excavation support, working at height without understanding the loading, or making an electrical connection they did not understand. The Occupational Safety and Health Act governs site conditions; competence governs whether the people inside those conditions know what they are doing.
Where Primebuild stands
Primebuild Construction Limited handles complete construction projects from inception to practical completion, and the company profile is explicit about who does that work: trained and highly experienced artisans — masons, carpenters, plumbers and electricians — who are trained and awarded certified grade tests at the DIT.
The profile is equally explicit that staff and equipment are the firm's great assets, at the disposal of the firm on any project however complicated. Directly held trades, supervised by the firm's own technical personnel.
Those are facts you can put to any contractor you are considering, including this one. To discuss a project, call +254 705 555 760 or request a quote.