Conflicts of interest for a technical report author

A technical report conflict of interest does not need to change what the author wrote to cause a problem. It only needs to be undisclosed. An applicant's noise assessment, viability appraisal or heritage statement is paid for by the applicant, and everybody in the room knows that. What damages the evidence is a relationship the reader discovers later, particularly where the author had a financial interest in the outcome beyond the fee for the work.

The answer is declaration, written plainly, in the report itself.

Why independence matters even in an applicant's report

There is no pretence that an applicant's consultant is neutral in the sense a court-appointed expert is. The report is commissioned to support an application. But the technical content inside it is expected to be the author's honest professional opinion, arrived at by a method that would produce the same answer if the client had been on the other side.

That distinction is what officers, statutory consultees and inspectors rely on. A case officer cannot re-run your dispersion model or recount your parking survey, so the weight given to the report depends on whether the author is credible. Professional institute codes make this explicit in different words: acting with integrity, not allowing the client's interest to override professional judgement, and disclosing anything that could reasonably be seen as affecting objectivity.

The test to apply is not whether you feel compromised. It is whether an informed third party, told the full facts afterwards, would think your judgement might have been affected.

Common conflicts and how they arise

Most conflicts in planning work fall into a handful of patterns.

The author's firm advised on the land acquisition or holds a stake in the outcome through a promotion agreement, so the value of the report's conclusion flows back to the firm. The author designed the scheme and is also assessing its effects, which happens routinely with daylight, noise and heritage on small schemes. The fee is contingent on permission being granted, which is a direct financial interest in a particular conclusion. The firm acts for the local planning authority on a related matter, such as evidence for the emerging local plan or a review of a neighbouring application. The author has a personal interest nearby, as owner, neighbour or objector. Or the same firm is instructed by two applicants competing for the same allocation or the same retail impact headroom.

A quieter one is worth naming. Repeat instruction from a single major client can shape judgement without anyone intending it, because the author knows which conclusion keeps the work coming. That is not a declarable conflict in the usual sense, and it is the reason internal review by someone without the client relationship is worth having.

Declaration wording that satisfies a reviewer

A declaration should be short, specific and placed at the front of the report rather than buried in an appendix. What a reviewer wants to see is the author's name and qualifications, the instructing party, the basis of the fee, any interest the author or the firm has in the site or the outcome, confirmation that the opinions are the author's own, and the limitations on the work.

Say what the fee arrangement is in plain terms: a fixed fee, a time charge, or a fee with a success element. If there is a success element, say so. A reviewer who finds it out later will treat everything else in the document differently.

Limitations deserve their own sentence. Work carried out on desk data without a site visit, survey data from a season outside the optimal window, a model run on assumed rather than measured inputs: each is a limitation rather than a conflict, and stating them protects both the author and the reader. The same logic applies to survey validity, where a report relying on three-year-old data should say so on its face.

Where an author also advises on land value

Viability is the area where conflicts are most consequential, because the output is a number that determines how much affordable housing or infrastructure a scheme provides, and the inputs are contestable.

A viability appraisal prepared by the same firm advising the client on land purchase price sits in an awkward place. The benchmark land value in the appraisal and the price the client paid are related, and the author has already expressed a view on the second. Where that situation exists, declare it, explain how the benchmark land value was derived independently of the transaction, and expect the authority's own reviewer to test it hard.

The professional standards for financial viability work set expectations on objectivity and reporting, and the competence and standards question for viability work sits alongside the conflict question rather than replacing it. Where a Viability Assessment is likely to be scrutinised by an independent reviewer appointed by the authority, assume every assumption will be traced back to its source.

An illustrative example. A firm acts for a landowner on the sale of a site, prepares the planning application for the purchaser, and then prepares the viability appraisal arguing that the policy-compliant affordable housing requirement cannot be met at the price paid. Each piece of work may be competent. Together, presented without disclosure, they invite the authority to disregard the appraisal entirely. Disclosed at the outset, with the benchmark land value derived from comparable evidence rather than the transaction, the appraisal can still be given weight. The scenario is illustrative.

Institute codes of conduct and their reach

The codes bind members, not firms, and they reach further than most authors assume.

Chartered planners are subject to the professional standards of their institute, which address competence, integrity and the duty not to mislead. Surveyors work under rules of conduct with specific requirements on conflicts of interest and on acting as an expert witness. Ecologists, archaeologists, acousticians, engineers and environmental practitioners each have codes with comparable provisions, generally requiring disclosure of interests and refusal of instructions the member is not competent to accept.

Two practical points follow. A complaint to an institute is a real consequence, separate from anything that happens to the application, and it attaches to the individual. And where a report is signed by a firm rather than a named individual, a reviewer cannot tell which code applies, which is itself a reason to name the author and their membership.

Where the work touches a report type with a statutory competence requirement, disclosure and competence run together. The meaning of competent person in planning legislation is a separate question from independence, and both need answering.

Challenges to independence at appeal

At an inquiry, independence is tested directly. A witness will be asked who instructed them, what they were paid, whether the fee depends on the outcome, whether they have written the opposite opinion elsewhere, and whether they have seen material they did not put in the proof.

Three things reduce the damage. Declare everything in the proof of evidence, so cross-examination has nothing to reveal. Keep the file, because a question about an earlier draft is much easier to answer when you can say what changed and why. And never adopt an opinion you do not hold because the client wants it in the proof, since the moment you concede it under cross-examination the rest of your evidence loses its value.

Costs risk attaches to unreasonable behaviour in appeals, and evidence that turns out to be advocacy rather than opinion can contribute to that. Inspectors also simply give less weight to a witness whose independence has been dented, which is a quieter but more common outcome.

Managing conflicts by scope and by team

Most conflicts are manageable, and the management is structural.

1. Screen for conflicts before accepting instructions, against the site, the parties and any related matter the firm holds.
2. Record the check, because a documented check is evidence of a system rather than luck.
3. Where a conflict is manageable, agree the arrangement with the client in writing and disclose it in the report.
4. Separate roles between individuals: one person designs, another assesses.
5. Use internal peer review by someone without the client relationship for any report that will be scrutinised.
6. Refuse a contingent fee arrangement for any work that will be presented as expert opinion.
7. Decline where the conflict cannot be managed, and say so early rather than after the fee is banked.

One honest uncertainty. There is no single published standard that tells a planning consultant which conflicts must be refused and which may be managed, and institute codes are principle-based rather than prescriptive. Where the position is unclear, ask the institute, and record the advice you were given.

Independent reviewers can be found through the PlanScope professional directory, which is also the route for a sign-off on an AI-assisted draft.

This is general guidance, not legal advice. Check the position with your professional institute or a qualified adviser before relying on it.

PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.