Common Mistakes Young Quantity Surveyors Make and What to Avoid - Egbodo Benjamin

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Egbodo Benjamin

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Friday, October 31, 2025

Common Mistakes Young Quantity Surveyors Make and What to Avoid

So, you’ve made it through the grind—university, certification, and maybe landed your first role as a Quantity Surveyor. Congratulations. You’re now part of one of the most dynamic professions in the construction world—equal parts detective, lawyer, mathematician, and strategist.

But here’s the truth no one tells you early enough: your degree taught you theory, not survival. The real industry moves fast, doesn’t wait for you to catch up, and punishes careless mistakes with cost overruns, lawsuits, or damaged reputations. So, let’s unpack the most common mistakes young Quantity Surveyors make—and how to avoid becoming a cautionary tale.


1. Thinking It’s All About Numbers

The Mistake: Believing your job ends at measurements and Excel formulas.
Reality Check: The QS role is as much about communication as it is about calculation. Miscommunication between you, the client, the contractor, or the design team can turn a well-budgeted project into a financial disaster.

Avoid It:

  • Confirm every instruction or assumption in writing.

  • Send updates regularly.

  • Keep a communication log—what was said, decided, and when.

  • Remember, your email trail can save you legally if disputes arise.


2. Ignoring Details and Failing to Double-Check

The Mistake: Taking quantity take-offs or estimates for granted.
Reality Check: A single omission—say, missing out reinforcement steelwork or misapplying a rate—can wreck your entire estimate.

Avoid It:

  • Develop a personal checklist for every stage of work.

  • Get a senior QS to review your calculations early in your career.

  • Always verify units, rates, and quantities.

  • Update cost data regularly; prices shift overnight.

  • Document every assumption—clarity now prevents claims later.

Legal Tip: Every QS owes their employer a “duty of care.” Negligence can lead to financial liability if your oversight causes loss.


3. Neglecting Contract Knowledge

The Mistake: Thinking, “I just do numbers, not contracts.”
Reality Check: You’re part of the project’s commercial and legal spine. Ignoring contract terms—like variations, payments, or extensions of time—can lead to disputes or even litigation.

Avoid It:

  • Read and understand the contract (FIDIC, NEC, or local equivalents).

  • Record every variation and scope change immediately.

  • Maintain a proper filing system for approvals, drawings, and correspondence.

  • Work closely with legal advisors when unsure.

Legal Tip: Contracts define your liability, payment rights, and dispute mechanisms. Don’t sign or act on what you don’t understand.


4. Poor Risk Management

The Mistake: Assuming projects go as planned.
Reality Check: Price inflation, design changes, site conditions, or even politics can derail budgets. Ignoring these risks can destroy profit margins.

Avoid It:

  • Build contingencies into estimates.

  • Identify potential risks early—materials, labour, regulatory.

  • Keep an eye on inflation and exchange rates.

  • Update forecasts regularly, not only when things go wrong.

Legal Tip: If a QS certifies payments without accounting for known risks or contract clauses, they may face professional liability.



5. Blind Dependence on Software

The Mistake: Believing digital tools eliminate human error.
Reality Check: Technology assists; it doesn’t think. Input wrong data, and you’ll get beautifully formatted nonsense.

Avoid It:

  • Understand manual measurement principles before automating them.

  • Always sense-check your software outputs.

  • Keep both digital and manual verification habits.

Pro Tip: A sharp QS doesn’t just know how to use software—they know when not to trust it.


6. Stagnating Professionally

The Mistake: Getting too comfortable with what you know.
Reality Check: Construction technology, standards, and laws evolve. If you stop learning, you stop being relevant.

Avoid It:

  • Join professional bodies (e.g., NIQS, QSRBN).

  • Attend industry seminars, webinars, and short courses.

  • Learn emerging skills: sustainability, BIM, cost modeling.

  • Study local market trends and regulations—especially critical in African contexts where procurement realities differ.

Legal Tip: Staying updated protects you from professional negligence. Outdated methods can be deemed “below professional standard.”


7. Poor Time and Priority Management

The Mistake: Trying to do everything at once.
Reality Check: QSs juggle estimates, valuations, claims, and meetings. Without structure, you’ll drown in deadlines.

Avoid It:

  • Prioritize tasks by cost and contract impact.

  • Don’t promise unrealistic delivery timelines.

  • Use tools or to-do systems to stay organized.

  • Learn to delegate or request support early.


8. Neglecting Relationships and Ethics

The Mistake: Treating the job as purely technical.
Reality Check: The construction industry runs on trust, reputation, and integrity. Burn a bridge once, and word spreads fast.

Avoid It:

  • Communicate honestly with all stakeholders.

  • Build rapport—clients and contractors remember professionals who solve problems, not those who hide behind jargon.

  • Maintain integrity. Refuse unethical shortcuts or “arrangements.”

  • Document everything. Transparency keeps your name clean.

Legal Tip: Professional misconduct or fraudulent practices can trigger disciplinary or criminal action under QS regulatory laws.


9. Ignoring Local Realities

The Mistake: Copying international standards blindly.
Reality Check: African and Nigerian markets have their own dynamics—currency fluctuations, material shortages, unstable logistics. Ignoring these can make your estimates unrealistic.

Avoid It:

  • Gather real-time data from local suppliers.

  • Factor in logistics, inflation, and import delays.

  • Apply global best practices but local judgment.

  • Keep a close relationship with site teams—they sense ground realities better than your spreadsheet does.


10. Not Learning from Mistakes

The Mistake: Moving from one project to the next without reflection.
Reality Check: Growth comes from post-mortems—studying what went right and what didn’t.

Avoid It:

  • After every project, jot down lessons learned.

  • Ask mentors for feedback on your performance.

  • Build self-audits into your workflow.

  • Stay humble—admit when you’re wrong, fix it fast, and move on.


Final Thoughts

Quantity surveying isn’t just a job—it’s a balancing act between precision and judgment, between data and people, between paperwork and intuition. Mistakes are inevitable, but repetition isn’t.

If you take one thing away from this: treat every task, no matter how small, as if your reputation depends on it—because it does.

A QS who builds habits of diligence, communication, and ethical clarity doesn’t just measure walls; they build trust, opportunity, and a lasting career.


Pro Tip for Aspiring Professionals:
Want to grow your visibility and network as a Quantity Surveyor or construction professional? Start sharing your insights, join credible communities, and never stop learning.

If you found this valuable, share it with your peers—and stay tuned for more guides on mastering cost, contracts, and construction life.


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