PQSC Quantity Surveyor Registration common mistakes
PQSC Quantity Surveyor Registration · Understand the traps and how to avoid them.
When a question asks for the 'cost' of an option, candidates add up the raw build cost and stop there, omitting financing charges, escalation to the construction midpoint, professional fees, contingency and whole-life operating or disposal costs, so the chosen figure is understated and the wrong option looks cheapest.
The habit comes from estimating work where the focus is the tender price or the measured works, and the candidate treats the question as a pricing exercise rather than an appraisal of total outturn or whole-life cost. Time pressure encourages grabbing the first big number.
What to do instead
Before calculating, write down the cost boundary the question implies: construction cost, outturn cost (add fees, contingency, escalation, financing) or whole-life cost (add operation, maintenance, replacement, residual value, discounted). Then build the answer as a labelled build-up with each element on its own line so the boundary is visible and auditable.
Candidates compare alternatives or evaluate a project using cash flows that are not on a common basis - mixing nominal and real figures, discounting at the wrong point in time, comparing an undiscounted payback with a discounted NPV, or ignoring the timing of when costs and revenues actually fall due.
Discounting and inflation are learned as formulas and then applied mechanically; candidates reach for a formula without first drawing the cash-flow timeline, and they forget that the choice of discount rate and base date changes the ranking of options.
What to do instead
Always sketch a timeline with dates before computing. State the base date, whether figures are nominal or real, and the discount rate basis. Convert everything to the same base date before comparing, and check that the appraisal method (NPV, IRR, payback, benefit-cost ratio) is the one the question actually asks for rather than the one you can recall most easily.
On measurement and quantification questions, candidates apply a standard method of measurement rule from memory without checking whether the described work falls within that rule's scope, and they miss items that the rules require to be given separately (or, conversely, itemise work the rules say must be included in another item).
The rules are numerous and similar-sounding, and revision tends to memorise clause numbers rather than the underlying logic of what is measured net, what is measured gross, and what is deemed included. Candidates also confuse preliminary and general items with measured work.
What to do instead
For each measurement question, identify the element, the unit of measurement and whether the rule measures net or gross before selecting an answer. Practise classifying a mixed list of items into measured work, preliminaries, provisional sums and dayworks. Where the question gives a described item, ask what the rule excludes as well as what it includes.
Candidates treat a cost estimate as a single point figure and give no indication of range, basis, or confidence, and they fail to distinguish an order-of-magnitude estimate from a detailed estimate when the question turns on the stage of design or the level of information available.
Exam answers reward a definite number, so candidates suppress uncertainty. In practice estimating is staged, and the accuracy expected depends on design maturity - a distinction that is easy to overlook when revising formulas rather than project stages.
What to do instead
Learn the estimating stages and the accuracy range typically associated with each, and the design information each depends on. In answers, state the basis of estimate, the assumed design stage, and a range or allowance for uncertainty. When a question describes incomplete information, the correct answer usually reflects a wider range and larger contingency, not a precise figure.
Candidates answer ethics questions by describing what a reasonable person would do in general terms, without identifying the specific professional obligation engaged, the party owed the duty, or the correct course of action and its escalation route.
Ethics is often revised as a set of slogans - act with integrity, be honest - which produces vague answers. Candidates also avoid committing to an action because they fear naming the 'wrong' one, and so describe the dilemma instead of resolving it.
What to do instead
Structure every ethics answer as: (1) the facts and the conflict, (2) the obligation and to whom it is owed, (3) the options with consequences for each party, (4) the recommended action, and (5) the escalation or disclosure route. Practise identifying the obligation by name rather than paraphrasing it, and commit to a recommendation.
Candidates fail to recognise a conflict of interest, or recognise it but decide it can be managed by the professional alone, without disclosure to the client or employer and without considering whether the professional should decline or withdraw from the instruction.
Conflicts are often perceived only as financial interests; candidates miss indirect interests such as a family connection, a prior role with a tenderer, a personal stake in a supplier, or a fee arrangement that rewards a particular outcome. There is also a reluctance to escalate because disclosure feels like an admission of wrongdoing.
What to do instead
Learn to screen for conflicts across categories: financial interest, personal relationship, prior involvement, outside employment, gifts and hospitality, and fee or payment structures that create incentives. For each, state that the interest must be disclosed promptly and in writing, that informed consent may be needed, and that where the conflict cannot be managed the professional must decline or withdraw.
Candidates conflate confidentiality with a duty to conceal, or the reverse - they disclose client information in an answer without identifying a proper basis for disclosure, or they refuse to disclose when a legal or professional obligation requires it.
Confidentiality is taught as a single rule, and the exceptions (legal requirement, court order, prevention of crime, protecting safety, consent) are learned as a list without the judgement of which applies. Candidates also confuse a duty of confidentiality with a duty of candour to the client.
What to do instead
For any confidentiality scenario, identify what information is confidential, to whom the duty is owed, and whether a recognised exception applies. State the minimum disclosure necessary and to whom. Where the question involves suspected wrongdoing, distinguish the duty to the client from the public interest and note the internal escalation route before any external disclosure.
Candidates accept an instruction, valuation or certification at face value and do not test it against the contract or the evidence - for example certifying a payment without checking the contractual valuation date, retention, set-off or notice requirements, or accepting a variation instruction from someone without authority.
Exam scenarios are written to look routine, and candidates answer the apparent question rather than checking the procedural preconditions. Familiarity with the arithmetic of valuations crowds out the contractual conditions that make a valuation or instruction valid.
What to do instead
For every contractual scenario, run a checklist: who has authority to instruct, what form the instruction must take, what notice or time bar applies, what the valuation date and payment terms are, and what records support the figure. Answer the procedural question before the arithmetic one, and cite the contractual mechanism rather than describing good practice.
Candidates give advice or prepare a report that strays beyond their competence or scope, or they present an opinion as fact without stating assumptions, sources and limitations, and without distinguishing their own professional judgement from the client's decision.
Candidates want to give a complete answer and so fill gaps with confident assertion. The boundary between advising and deciding, and between one's own expertise and a specialist's, is rarely tested explicitly in study material, so it is not front of mind.
What to do instead
Practise writing short advice notes that state the instruction, the assumptions, the information relied on, the limitations, and the recommendation with its consequences. Where a matter requires another discipline, say so and recommend specialist input rather than opining. Make clear that the decision rests with the client or employer and record that the advice was given on that basis.
Candidates treat the professional standards and ethics domain as a soft subject and allocate revision time almost entirely to calculation, so they can compute an NPV or a valuation but cannot name the obligations, the complaints or disciplinary process, or the required behaviours around bribery, gifts and records.
Quantitative topics feel more testable and give a sense of progress, while standards feel like common sense. Candidates assume general good character will carry them through and do not learn the specific requirements or the consequences of breach.
What to do instead
Build a one-page standards sheet covering the core obligations, the rules on conflicts, confidentiality, gifts and hospitality, competence, records and reporting concerns, plus the escalation and disciplinary routes. Test yourself by writing short scenario answers against it, and rehearse naming the obligation and the action rather than describing the dilemma.