The Hidden Costs of Poor Survey Data (and How to Avoid Them)
When you’re managing a construction project, one bad set of survey data can quietly snowball into delays, disputes, and spiralling costs. On the surface, it might look like a minor error—an incorrect level, a missed boundary, or a service that wasn’t picked up. But on site, those errors multiply. And suddenly, you’re looking at rework, programme slippage, and unhappy stakeholders.
At AKN Engineering, we’ve seen how poor survey data can derail even the best-laid plans. Let’s break down the hidden costs—and more importantly, how you can avoid them.
Accurate survey data prevents costly rework, delays, and disputes on UK construction projects.
1. Programme Delays
One inaccurate measurement might not seem catastrophic at first, but once construction starts, the knock-on effect is significant. For example, an incorrect boundary line can hold up piling works while designs are reissued, or a missed drainage connection can stall utility diversions for weeks. Every day lost on site costs money—not just in labour and plant hire, but also in contractual penalties for late delivery. The Construction Playbook—the UK government’s latest guidance on how public sector construction projects should be delivered—emphasises that early-stage accuracy and planning are key to avoiding delays and downstream disputes.
2. Cost Overruns Rework is expensive.
Correcting errors after they’ve been built costs far more than getting them right the first time. Imagine pouring a concrete slab, only to discover the levels were wrong. Breaking it out, re-pouring, and resourcing the job doubles the spend. Add in additional site supervision, machinery, and design team time, and the bill grows fast. Research by the Institution of Civil Engineers highlights that data errors are one of the biggest contributors to project overspend.
3. Disputes and Claims
Poor survey data doesn’t just affect programme and budget—it also triggers disputes. If “as-built” records don’t match reality, contractors and clients end up pointing fingers. In the worst cases, it leads to claims, strained relationships, or even legal action. This is particularly critical under the Building Safety Act 2022 where accurate records are now a legal requirement on many UK projects. If your data can’t withstand scrutiny, the liability risk lands with you.
4. Safety Risks
Beyond cost and time, poor data can be dangerous. Missing underground services can lead to utility strikes, risking worker safety and serious HSE intervention. Incorrect road levels can compromise drainage, leading to flooding and long-term maintenance headaches. Good data isn’t just about efficiency—it’s about protecting your team and the public.
How to Avoid the Pitfalls
The good news? These costs are avoidable. Here’s how we help our clients protect their projects:
Invest in quality surveys upfront - A small spend at the start saves massive costs later.
Use the right technology – From GNSS and total stations to PAS 128 utility surveys, accurate kit makes a difference.
Rely on experienced engineers – Skilled site engineers know how to spot errors before they escalate.
Keep data transparent – Inspection Test Records (ITRs) and clear deliverables ensure all parties have confidence in the data.
Choose continuity – Working with one surveying team throughout reduces the risk of misinterpretation.
At AKN Engineering, we specialise in highways and civil engineering projects where accuracy is critical. Our surveys are trusted by main contractors because we don’t just collect data—we make sure it’s the right data.
Poor survey data is never just “a few millimetres out.” It’s a hidden cost driver that eats into time, money, and trust. By prioritising accuracy from the start, you’re not only keeping your programme on track—you’re protecting your reputation and your bottom line.
👉 If you want survey data you can rely on, get in touch with us at 🧑🏽💻 www.aknengineering.co.uk or call us on 01279 927 033 to discuss your next project. ☎️