Choosing a quantity surveyor is not simply a matter of comparing day rates.
The right QS will help you gain a firmer grip on cost, protect your contractual position and make decisions before they become urgent. The wrong one may produce polished reports without improving the commercial outcome of the job.
That distinction matters whether you are a homeowner planning an extension in Wolverhampton, a contractor pricing work in Staffordshire or a Tier 2 or Tier 3 business delivering an NEC project in Shropshire.
A good quantity surveyor gets onto your numbers early. They tell you the truth about them. They hand you a plan you can act on.
Use these ten checks before you appoint one.
1. Check that they understand the job you actually run
Start with your own requirements.
A homeowner may need a cost plan, tender support, valuation of work completed and advice on variations. A contractor may need estimating, subcontract management, applications for payment, change control and final account support.
A Tier 2 or Tier 3 contractor working under NEC may need something more specific:
- Early warning and risk registers
- Compensation event notifications and quotations
- Programme and cost impact records
- Defined cost assessments
- Monthly cost-value reconciliation
- Payment applications and forecasts
- Support with the main contractor or client-side team
Ask the QS to explain exactly how they would support your type of project. If the answer remains vague, the appointment will probably be vague too.
Do not appoint a generalist simply because they use the right job title. Match their scope to your commercial exposure.
2. Check their professional standing and insurance
Qualifications do not replace experience, but they provide a useful starting point.
Ask whether the individual is chartered, whether the firm is professionally regulated and what professional indemnity insurance it carries. If your project has a significant value or contractual risk, ask to see confirmation that the level of cover is appropriate.
You should also establish:
- Who will be responsible for your work
- Whether the named person will carry out the work personally
- How complaints are handled
- Whether the firm has any relevant conflicts of interest
- Whether its appointment terms clearly define responsibility
The Royal Institution of Chartered Surveyors describes quantity surveyors as cost managers involved in cost planning, procurement, tendering, contract administration and financial reporting. You can read its overview of what a quantity surveyor does when assessing the scope you need.
Professional status is one check. It is not the whole decision.
3. Check for experience with contractors of your size
Large-project experience can be valuable. It does not automatically make someone suitable for an SME.
A QS who has only worked within a major consultancy may be used to extensive reporting structures, large teams and processes designed for projects many times larger than yours. That can create unnecessary cost without giving you better control.
Ask for examples of recent work involving:
- SME contractors
- Tier 2 and Tier 3 contractors
- Subcontractors and package contractors
- Similar project values
- Similar trades or construction sectors
- Comparable contract forms
The important question is not only, “Have you worked on a £100 million project?”
Ask instead, “Have you helped a business like mine control margin, recover entitlement and maintain cash flow on a job of this size?”
That answer will tell you more about fit.
4. Check that they can administer NEC and JCT contracts in practice
NEC and JCT contracts require active administration. They are not documents you can put in a filing cabinet and revisit at final account.
For NEC work, ask which forms and options the QS has administered. This may include NEC3 or NEC4, main contracts, subcontracts and options such as Option A or Option C.
Ask how they manage:
- Early warnings
- Risk reduction meetings
- Compensation event notifications
- Quotations and defined cost
- Accepted Programme issues
- Time-bar requirements
- Records supporting delay and disruption
- Monthly assessments and forecasts
For JCT work, ask about their experience with the specific form in use. Relevant areas may include:
- Applications for payment
- Pay Less Notices
- Variations and remeasurement
- Extensions of time
- Loss and expense
- Subcontract accounts
- Final account negotiation
A capable QS should explain these processes in plain English. They should tell you what needs to happen, by when, who owns the action and what evidence supports it.
If they can only describe the contract in theoretical terms, be cautious.
5. Check how they handle compensation events
Compensation events can materially affect the value and completion date of an NEC project. They also create risk when the records are late, incomplete or disconnected from the programme.
Ask the QS to walk you through a compensation event from start to finish.
They should be able to explain how they would:
- Identify whether the event may be a compensation event.
- Notify the event within the required timescale.
- Record the cause, instruction, date and affected activities.
- Assess the cost and time effect.
- Prepare or review the quotation.
- Link the assessment to programme information.
- Maintain supporting records for labour, plant, materials and disruption.
- Track the event through agreement and implementation.
The process must work while the job is live. Reconstructing a compensation event months later is slower, harder and more exposed to challenge.
We have developed our NEC4 and defence commercial management service around this practical requirement. The focus is not on producing a report that describes the problem. It is on notifying, assessing, recording and closing the issue properly.
6. Check whether their cost reports help you make decisions
A cost report should tell you what is happening and what you need to do next.
It should not bury the answer in forty pages of tables.
Ask to see a redacted example of a cost report, CVR or forecast. Look for clear treatment of:
- Original contract value
- Approved and pending changes
- Actual cost to date
- Forecast cost to complete
- Forecast final cost
- Earned value or progress
- Margin movement
- Cash flow
- Key commercial risks
- Required decisions and actions
The format should suit the size and complexity of your business. Proportionate systems are usually more useful than oversized processes.
You should be able to understand the commercial position without needing the QS to translate their own report. If the report identifies a variance, it should also explain its cause, likely consequence and recommended action.
7. Check whether they understand cash flow and margin
Revenue is not the same as cash. Turnover is not the same as profit.
Your QS should understand how applications, certification, retention, variations, subcontract payments and final accounts affect cash flow. They should also understand how small forecasting errors can erode margin over the life of a project.
Ask how they would help you:
- Prepare accurate applications for payment
- Track certificates and payment dates
- Identify under-certification early
- Forecast cash requirements
- Monitor subcontract liabilities
- Separate committed cost from forecast cost
- Explain margin movement to your management team
- Escalate decisions before they become urgent
This is particularly important for SMEs. A business can be busy, profitable on paper and still face serious pressure if cash arrives late or costs are not forecast honestly.
8. Check what records and systems they expect from you
A QS cannot protect an entitlement that the project team has failed to record.
Ask what information they need from site managers, contracts managers and commercial staff. A sensible process may include:
- Site diaries
- Labour and plant records
- Delivery tickets
- Photographs
- Instructions and correspondence
- Programme updates
- Subcontract notices
- Progress records
- Timesheets and allocation records
- Change and risk registers
The system should be workable for your team. Do not accept a process that looks sophisticated but will not be maintained during a difficult week on site.
A good QS will also explain why each record matters. They will help your team improve the quality of information rather than simply criticising it after the event.
Our NEC and JCT contract training is designed around this principle: plain-English guidance, practical records and actions that can be used on the job.
9. Check their availability and working relationship
Find out who will actually support you when an instruction arrives late on a Friday or a payment assessment does not reflect the work completed.
Ask:
- How quickly will they respond to urgent commercial issues?
- How often will they attend site or commercial meetings?
- Who covers the work when the lead QS is unavailable?
- Will they deal directly with your client or main contractor?
- What information will they need each month?
- How will they raise bad news?
- Will they challenge decisions that create unnecessary exposure?
You are not appointing someone only to complete scheduled tasks. You are appointing an adviser who should recognise risk and raise it early.
The working relationship matters. You need clear communication, commercial judgement and enough confidence to have difficult conversations when the numbers do not support the preferred position.
10. Check the appointment before you sign it
Get the scope in writing.
Your appointment should state what the QS will do, what they will not do and where your own responsibilities remain. It should cover the contract forms involved, reporting frequency, site attendance, notices, valuations, change management, final accounts and any dispute support.
Also confirm:
- Fee structure and hourly or daily rates
- Fixed-fee elements and fee caps
- Expenses and travel charges
- Invoicing and payment terms
- Deliverables and reporting dates
- Authority to issue or review notices
- Confidentiality
- Conflicts of interest
- Professional indemnity insurance
- Termination arrangements
Do not assume that “commercial support” includes everything you need. It may not include compensation events, subcontract accounts, planning input or formal notices unless the appointment says so.
A clear scope protects both parties. It also exposes gaps before they become expensive.
What a good QS appointment should give you
The right quantity surveyor in the West Midlands should give you more than documents.
They should help you:
- Understand the numbers
- Identify variances early
- Protect contractual entitlement
- Improve payment and cash flow visibility
- Maintain records that withstand scrutiny
- Manage NEC or JCT obligations
- Forecast the likely final position
- Make decisions before they become urgent
At BHD Limited, we apply the same commercial discipline to smaller firms that larger infrastructure programmes require, but we scale the process to the job in front of you. Our founder, Nick Garvey, has more than 25 years’ experience across construction, defence and infrastructure, including commercial leadership on the £443 million Vehicle Storage and Support Programme for the MOD and a £9 million forecast outturn reduction on a live contract.
That experience only matters when it produces a useful outcome for you: clearer cost, stronger records and a plan you can act on.
You can review our quantity surveying and cost consultancy services, including cost estimating, cost reporting, valuations, final accounts and contract administration.
Frequently asked questions
Do I need a QS for a small construction project?
Not every small project needs a full-time quantity surveyor. You may still benefit from proportionate support with budgeting, tender comparisons, payment assessments, variations or final accounts. The right level of involvement depends on project value, contract complexity and your own experience.
What is the difference between a QS and a cost consultant?
The terms often overlap. A QS typically supports measurement, estimating, valuations, cost control and contract administration. Cost consultancy may describe a wider advisory role across feasibility, procurement, cost planning, reporting and commercial strategy. Check the actual scope rather than relying on the title.
Should I choose a local quantity surveyor?
Local knowledge can help with site visits, availability and regional supply-chain conditions. However, technical and contractor-side experience still matters more than postcode. Look for someone who understands your contract, trade, project value and commercial responsibilities.
Can a QS help with an NEC compensation event after the deadline?
They can review the circumstances, records and contract position, but they cannot guarantee recovery where a notice or record was late. This is why early advice matters. If an event has occurred, seek a straight view quickly rather than waiting for the final account.
How much do quantity surveying services cost in the UK?
Fees vary according to scope, project value, contract form, site attendance and the level of risk. Ask for a written fee basis and compare what each proposal includes. A cheaper appointment may provide less protection if it excludes live change management or contract administration.
Need a straight view before you appoint?
If you are comparing QS firms, dealing with a live commercial issue or unsure how much support your project needs, contact BHD Limited for an initial conversation or cost health-check.
We will ask what the job requires, where the exposure sits and what support would be proportionate. If you need a different level of service, we will say so.