How subcontractors are catching issues before they become rework, with Onetrace

Most rework isn't a workmanship failure. It's a timing failure. An issue that exists but is not noticed for weeks is an operational pain for subcontractors. The cheapest moment to catch a problem is while the work is still open. After that, you're paying to reopen it.

The sums are large. Estimates of the total cost of error in UK construction range from 10% to 25% of project cost, or £10-25bn a year across the sector (Construction Leadership Council, 2023). The Get It Right Initiative puts the measured direct cost of avoidable errors in the order of 5% of project value.

Late discovery is common in this industry. Projects rely on temporary, multi-party teams, which weakens continuity and coordination, and decisions are often informal or poorly recorded. The industry also lacks standardised data capture, which limits visibility.

Construction firms typically operate on margins of 2-4%, and subcontractors tend to work under fixed-price contracts with limited ability to pass on cost increases. On those terms, an unplanned return visit comes straight out of the margin.

Checking after the fact can't fix timing. The check has to happen inside the work, where a fix is still cheap.

Onetrace is construction management software built for specialist subcontractors. Operatives capture and record the work as they go, all pinned to an exact location on the drawing. The office sees job status and approvals as they come in. If something is missing or wrong, it goes back while the operative is still on site. The fix takes minutes, not a return visit.

The check now happens as the work happens, not three weeks later at inspection. Supervisors and the office no longer rely on memory, because the evidence is already on the drawing. Experienced supervisors have always caught issues, but only when the right person looked at the right paper in time. Software helps to remove that dependency.

For the subcontractor, there are fewer return visits and fewer awkward conversations about who pays, and the margin stays intact. When a main contractor or client asks, the evidence shows the work was done correctly.

T&R Fire Protection, an Essex firm with more than 35 years behind it, works in fire stopping, intumescent coatings, and board and barrier systems. It has recorded more than 1,800 jobs on Onetrace, and around 90% of its projects run through it. Director Tom Port-Smith says: “With Onetrace you can look at the day's work and catch issues early, making changes right then and not a month later when the job's finished. It's a massive positive.”

Golden Thread Fire Delay has more than 30 years’ experience in passive fire protection. Before Onetrace, non-standardised worksheets meant someone had to double-check installation information, which needed multiple site revisits. With customised forms, consistent door asset numbers and location descriptions, and client guest access, Onetrace eliminated those revisits. On the Greenwich University project, the team tracked more than 2,500 doors and saved more than 100 hours collecting information.

Both examples are fire protection, where the evidence has to stand up to scrutiny. The principle isn't specific to fire. That's our view, not a customer claim: any trade working to drawings and a specification, from drylining to M&E, has the same gap between doing the work and checking it. Where Onetrace moves the check and sign-off into the work, the gap closes while the fix is still cheap.

The same evidence that catches an issue early also shows a main contractor or client that the work was checked. One record, two jobs: fewer return visits, and a stronger case when someone asks how you know it’s right.

You can see how subcontractors use Onetrace at onetrace.com.