Expert article
Defect tracking: a line in a list becomes a case
A defect list tells you that something is wrong. A case tells you where it is wrong, who has to put it right, by when — and whether it is done.
Expert article by Open Experience GmbH. · As of: September 2026
What is defect tracking on site?
Defect tracking is the continuous handling of individual defects from the moment they are found to the moment they are signed off: capture them, locate them on the plan or in the model, evidence them with a photo, assign them to a responsible party with a deadline, follow the progress and inspect the rectification. It is the operational side of defect management — that discipline settles which rights and periods apply, while tracking makes sure that something can actually be proven at the end.
Legal framework: Germany (Civil Code BGB, construction contract rules VOB/B, fee schedule HOAI). Other countries have different rules, and contractual agreements take precedence over the standard periods named here.
What a defect has to contain
A defect without these details is not a finding but a reminder. The right-hand column shows what you lose when the detail is missing.
| Detail | Example | What fails without it |
|---|---|---|
| *Location* | Position on the floor plan, building element in the model | Finding it again, assigning it to a trade, re-inspecting it |
| *Description* | The symptom, not the cause | A notice that identifies the defect unambiguously |
| *Photo* | An image with a timestamp | Proof of the condition at a given moment |
| *Responsible party* | Firm and contact person | Addressee of the notice, start of the deadline |
| *Deadline* | A date, not "as soon as possible" | Default, self-remedy, substitute performance |
| *Status* | open, in progress, signed off | Proof that something was actually completed |
The description names the symptom ("crack, 40 cm, horizontal"), not the suspected cause. Attributing the cause is a matter for the contractor or an expert.
The walkthrough holds it together
Individual defects rarely occur individually. In practice an area is walked and a series of findings is made along the way. Where those findings belong to one walkthrough, a report emerges from them with no extra work — with date, participants, area and every item on it.
- One report instead of a pile of notesThe walkthrough becomes the document the subcontractor receives — finished the moment the round is over.
- Follow-up without manual effortThe next walkthrough of the same area shows what has stayed open instead of starting from scratch.
- Allocation to the tradeWhoever can filter by trade sends one list per firm instead of one combined list to everybody.
Escalation instead of chasing
The most expensive part of defect tracking is not the capture, it is the chasing by phone. An escalation rule takes that part away: if no response arrives within the deadline, the case moves up a level automatically — from the foreman to site management, from site management to project management.
- Three levels are enoughIn practice, more levels only mean that nobody knows any more who is currently responsible.
- The deadline carries the escalationWithout a stored date no system can escalate — which is why the deadline is a mandatory field, not a comment.
- Everything stays with the caseWho was informed and when belongs to the defect, not to a separate mailbox.
Why spreadsheets fail at this point
No location
A cell reading "ground floor, rear left" can no longer be resolved six months later.
No timestamp
The modification date of the file says nothing about when the finding was made.
No link to the photo
The photo sits in a folder next to it — and is called IMG_4711.jpg.
Three versions in circulation
As soon as a list travels by email it exists several times over, and none of the copies is the right one.
No sign-off
The status is overwritten, the history is gone — and it is the history that is needed later.
Better
One case in which location, photo, deadline, responsibility and history hang together.
The list as a template
Status model, responsible party as a mandatory field, three escalation levels with date of receipt and a deadline traffic light — as an Excel workbook with twelve completed example defects. No sign-up.
The photo belongs to the defect
The most common split in construction projects is the one between the defect list and the image archive. It costs twice over: once during capture, because everything is filed in two places, and once in a dispute, because nobody can still say with certainty which image belongs to which finding. Where photos are taken directly on the case, both costs disappear. Alongside that, Construction Photos builds a continuous photo diary of construction progress — including areas where there is no defect at all.
From practice: markings and notes made directly in the image save you three follow-up questions when it matters — what exactly is meant here?
A case that survives acceptance
In Construction Defects the defect is created once and stays the same case — captured on site, located on the plan or in the IFC model, evidenced with a photo and a voice note, given a deadline and a responsible party, tracked across up to three escalation levels and finally signed off. After acceptance it simply carries on instead of moving into a second list.
Frequently asked questions
What is the difference between defect tracking and defect management?
Management describes the legal sequence — notice, deadline, rectification, warranty. Tracking is the day-to-day handling of the individual cases, and it is what makes that sequence provable in the first place.
Is outstanding work a defect?
No. Outstanding work has not been performed yet; a defect has been performed but not in conformity with the contract. The two belong in separate records, because different legal consequences attach to them.
Do subcontractors need their own accounts?
It is not required, but it is sensible almost every time. Whoever sees the defect in their own account and signs off the rectification there saves two transfers and the errors that come with them.
Does capture work without an internet connection?
Yes. Capture happens offline and synchronises as soon as mobile data or Wi-Fi is available again. On shell-construction sites that is the normal case, not the exception.
How many escalation levels make sense?
Three, in practice. More important than the number is that every level has a named person and that the escalation stays documented on the case.
What happens to defects after acceptance?
They carry on — with the burden of proof reversed and inside the warranty period. That is precisely why there should be no change of system between the construction phase and the warranty.
Sources and legal basis
The legal statements in this article are based on the primary sources listed below. The article is not a substitute for legal advice in an individual case.
- VOB/B (2016 edition), official text of the German building ministry — Sections 4(7) and 13: defects during construction and afterwards
- Section 633 German Civil Code (BGB) — material and legal defects: when a work is defective
- Annex 10 HOAI — basic services of site supervision, among them establishing defects and documentation
The list becomes a chain.
45 minutes on a real project: capture on site, the report for the subcontractor, the sign-off — played through once from end to end.