Quantity Surveyor Interview Questions UK: 8 Real Questions and What Interviewers Want

Before your Quantity Surveyor interview, it helps to see the questions from the interviewer's side. We have picked eight from our set of 25 and added the reason each one gets asked.

Eight Quantity Surveyor interview questions, and what the interviewer is thinking

1. What does a typical day as a quantity surveyor involve?

Why they ask: They want to see you understand the balance of measurement, cost control and contract admin.

2. Walk me through how you prepare a monthly valuation.

Why they ask: Valuations are the core of post-contract QS work.

3. How do payment notices and pay less notices work under the Construction Act?

Why they ask: Compliance with the Housing Grants, Construction and Regeneration Act 1996 is critical to avoid paying more than intended.

4. Explain how you prepare a cost value reconciliation.

Why they ask: Shows the ability to report accurately on project financial performance.

5. How do you buy out subcontract packages, and what do you look for in a subcontract?

Why they ask: Buyout is where much margin is made or lost.

6. How do you prepare a cost plan, and what are the stages of cost estimating in the early design stages?

Why they ask: Pre-contract knowledge shows breadth.

7. A subcontractor submits a valuation you believe is significantly overvalued. How do you handle it?

Why they ask: Balances fairness with commercial protection.

8. Tell me about a time you saved money or recovered cost on a project.

Why they ask: Evidence of commercial impact.

A sample answer to question 1

What does a typical day as a quantity surveyor involve?

It varies between pre-contract and post-contract work, but on a live project my week revolves around cost control. I might start by reviewing subcontractor payment applications and visiting site to verify progress against the work done. Then I update the cost value reconciliation, comparing what we have earned against what we have spent, and forecast the final account. I deal with variations, valuing instructions and preparing or responding to compensation events or change requests. I attend progress meetings, chase subcontractors for outstanding quotes, and issue payment notices and pay less notices within the contract deadlines. There is also admin such as maintaining the order and variation registers. Underneath it all, I am protecting the company's commercial position while keeping good working relationships with the supply chain and client.

Common mistake to avoid: Describing it as only measuring; Ignoring contract administration

Want the rest?

Full model answers, key points and common mistakes for all 25 questions are on the Quantity Surveyor interview questions page. The first five are free, no sign-up needed.