Knowledge · Business and operations
Assure quality while it is
still cheap to fix.
Quality assurance is what a builder does during the build to catch a problem before it is covered up, not what they do at handover to find the ones that got away. This is the reference for hold points, inspections and records, and the loop that turns every defect into a change that stops it happening again.
01 / Overview
Prevention, not inspection
Quality assurance is the work a builder does during construction to make sure the house is built right the first time. It is not the same as finding defects at handover, which is what happens when quality assurance did not do its job. The distinction matters because the two sit at opposite ends of a cost curve. A problem caught at a hold point, while the work is still open, costs almost nothing to fix. The same problem found after it has been covered, tiled over, lined, poured on, can be genuinely expensive, because good work has to be undone to reach it.
So quality assurance is really a timing discipline. It puts the check at the moment the work is visible and cheap to correct, records the result, and stops the next trade from building over anything that has not passed. The handover end of the story, practical completion and the defects that surface afterwards, is covered in practical completion and the defects liability period; this page is about the checks during the build that decide how short that defects list will be.
Why it matters
Beyond cost, quality is a legal position. A builder owes statutory warranties that run for years after handover, and defects that surface in that period are the builder’s to fix. Strong quality assurance during the build is the cheapest form of warranty management there is, because the defect that never happened is the one that never has to be rectified under warranty. General information only, not legal advice; warranty obligations vary by jurisdiction.
02 / The tools
How quality is assured on site
Quality assurance runs on a small set of tools, each doing a specific job, catching the problem, standardising the check, and proving it happened.
Hold points
A defined stage where work stops until an inspection is passed, before it is covered up. Waterproofing checked before tiling, reinforcement checked before a pour, frame checked before lining. A hold point is the cheapest possible moment to catch a problem, because nothing has been built over it yet.
Inspection checklists
A written list of what good looks like at each stage, so the check is against a standard rather than the supervisor’s memory on the day. Checklists make quality consistent across supervisors and across jobs, and they turn a vague walk-around into a specific pass or fail.
Quality records
The dated, often photographed evidence that each check was done and passed. Records protect the builder in a dispute, satisfy warranty and certification requirements, and build a history of how the work was actually delivered, not just a claim that it was fine.
Trade sign-offs
The point where a trade confirms their work is complete and compliant before the next trade builds on it. A sign-off makes responsibility clear, if the waterproofing later fails, the record shows who signed it off and when, which is the difference between a warranty claim and an argument.
03 / The workflow
Running a quality check
The workflow is the same at every stage, define the standard, inspect at the hold point, record the result, rectify before proceeding, and feed anything that slips back into the method.
- 01
Define the standard
Set what good looks like for each stage, drawn from the drawings, the specification, the National Construction Code and the relevant Australian Standards. Quality cannot be assured against a standard that was never written down, so the specification and the checklist come first.
- 02
Inspect at the hold point
Check the work at the stage where a defect is still visible and cheap to fix, before it is covered. The inspection is against the checklist, not against a general sense that it looks right.
- 03
Record the result
Capture the check, the date and the evidence, usually photos, whether it passed or failed. The record is made at the point of inspection, because a quality record reconstructed later is worth far less than one made on the day.
- 04
Rectify before proceeding
A failed check stops the work until it is put right and re-checked. The whole value of a hold point is lost if the job proceeds over a failed inspection, so the discipline is that the next trade does not start until the sign-off is clean.
- 05
Feed defects back
When a defect does slip through, trace why the check missed it and change the checklist or the method so it cannot recur. This is the loop that turns quality assurance from a static checklist into a system that gets better every job.
04 / Continuous improvement
Turning defects into method
The part of quality assurance builders most often skip is the loop that closes it. Catching and fixing a defect on one job is necessary but not sufficient, because the process that produced the defect is still in place, ready to produce it again on the next job. The builders whose quality genuinely improves are the ones who trace each defect back to why the check missed it, then change the checklist, the standard or the method so it cannot recur.
This is where quality assurance connects to how a builder captures the way it builds. When a recurring defect leads to a permanent change in the standard method, that improvement is captured into the business rather than carried in one supervisor’s head, the same compounding idea behind assemblies and construction recipes. A defect fixed and forgotten is a cost paid once and due to be paid again; a defect fixed and designed out is a cost that stops recurring, which is the entire point of a quality system over a quality inspection.
05 / Failure modes
Where quality assurance breaks down
The common failures all share a shape, the check happens too late, exists only in someone’s head, leaves no record, or never feeds back into the method.
Inspecting after it is covered
Checking waterproofing after the tiles are on, or reinforcement after the pour. The defect is now expensive to reach and expensive to fix, when a hold point minutes earlier would have caught it for nothing. Quality assurance that happens after the cover-up is really just defect discovery.
Quality in the supervisor’s head
The standard exists only as what an experienced supervisor happens to check. It works while that person is on the job and falls apart when they are stretched across too many sites or replaced, because the standard was never written into a checklist anyone else can follow.
No record of the check
The work was inspected but nothing was recorded. When a defect surfaces in the warranty period, or a certifier or client asks for evidence, there is nothing to show, and the builder carries a cost or a doubt they inspected their way out of at the time but cannot prove.
Defects that keep recurring
The same defect appears job after job because nothing is fed back into the method. Fixing a defect on one job without changing the process that produced it guarantees paying to fix it again on the next.
06 / FAQ
Common questions.
Quality assurance happens during the build and is about prevention, checking work at hold points so problems are caught before they are covered up. Defect management happens at and after handover and is about cure, identifying and rectifying problems that made it through. Both matter, but they are not the same discipline and they have very different economics. A defect caught at a hold point during construction costs almost nothing to fix; the same defect found at handover, or worse in the defects liability period, can be genuinely expensive because the work built over it has to be undone first. A builder with strong quality assurance during the build has fewer, cheaper defects at the end. The handover and defects side is covered in practical completion and the defects liability period.
A hold point is a stage where work stops until an inspection is passed, specifically chosen to fall before the work is covered up. Waterproofing before tiling, reinforcement before the concrete pour, framing before it is lined. The reason it matters is entirely about cost and timing. At a hold point the work is fully visible and nothing has been built over it, so a problem is both easy to see and cheap to fix. Let the same work be covered, and finding the problem later means demolishing good work to reach it. Hold points are the highest-leverage tool in construction quality because they put the inspection at the one moment when a fix is nearly free.
Yes, for two reasons beyond the work itself. The first is evidence. A builder owes statutory warranties that run for years after handover, and if a defect is alleged, a dated, photographed record of the check that was done is the difference between a clear position and a costly argument. The second is the standard itself. Records make quality visible and consistent, they let an owner see that checks are actually happening, they satisfy certifiers and warranty schemes, and over time they build a picture of how the business really delivers. Good work with no record is still exposed, because in a dispute the question is not whether the work was good, it is whether you can show it.
It sits on top of the documentation and feeds the improvement of the method. Quality is assured against a standard, which comes from the drawings, the specification and the applicable codes, so a vague or out-of-date specification undermines quality assurance before it starts. The daily record of what was inspected and found often lives in the site diary, which is why the two disciplines run together. And the defects that do occur should feed back into the assemblies and methods the business uses, so the same mistake is designed out rather than repeated. Quality assurance is not a bolt-on inspection, it is part of the same connected system as the specifications, the records and the way the builder captures how it builds.
07 / Keep reading
Related knowledge, guides and features
Catch it at the hold point, not at handover.
VIABUILD carries checklists, hold-point inspections and photo records on site through ViaSite, attached to the job, so quality is assured against a standard and the evidence builds itself as the work is done.