Checking a consultant's credentials before appointment

How to check a planning consultant comes down to four things you can verify from your desk in under an hour: the register entry, the insurance certificate, two comparable applications on a council's public register, and the name of the person who will actually write the report. Everything else is a conversation. Self-builders tend to skip all four and rely on a recommendation, which works until it does not.

The planning profession is only partly regulated. "Architect" is a protected title under the Architects Act 1997 and only a person registered with the Architects Registration Board may use it. Planning consultant, ecologist, acoustician, arboriculturist and transport planner are not protected titles, and anyone may use them.

What can actually be verified

The last row matters. No consultant can show you a meaningful approval rate, because the figure depends on the sites they were asked to take on. Anyone quoting one is selling.

Institute registers and licence checks

Go to the institute, not to the website that claims the membership. The bodies most relevant to an application pack are the Royal Town Planning Institute for planners, the Royal Institution of Chartered Surveyors for surveyors and viability, the Royal Institute of British Architects and the statutory register for architects, the Chartered Institute of Ecology and Environmental Management for ecologists, the Chartered Institute for Archaeologists for archaeologists, the Institute of Acoustics for acousticians, the Institution of Lighting Professionals for lighting, the Arboricultural Association for tree work, the Landscape Institute for landscape, the Institution of Structural Engineers for structures, and the Chartered Institution of Highways and Transportation for transport.

Three practical notes. Membership grades differ, and an affiliate or student grade is not chartered status, so ask for the grade as well as the body. Several institutes maintain registered practice or registered consultant schemes that are more informative than individual membership, because the firm has been assessed. And a register entry proves standing, not current competence on your type of site.

Ecology is the exception where a check is not optional. Survey and mitigation work for protected species requires a suitably licensed ecologist, and that is a legal requirement rather than a quality marker. Ask for the licence or registration number, the class licence it sits under, and the expiry date, and confirm the registration covers the species and methods you are commissioning.

Asking for comparable project references

Testimonials on a website tell you nothing. Application references tell you a great deal, because planning registers are public.

Ask for two applications of the same type, on the same kind of site, decided in the last three years, with the council name and the application reference. Then go and read them. The officer's report will say what the authority thought of the submitted documents, whether further information was requested, and what the sticking points were. A refused application is not a mark against a consultant, and an officer's report describing a supporting statement as unclear or unsupported by evidence is.

Ask one follow-up question about each: what would you do differently on that one. The answer separates people who have reflected on their work from people who have repeated it.

Reading the appointment letter

Short appointments cause long arguments. Eight items should be in writing before any money changes hands.

1. Scope, listed as named deliverables rather than as a service description.
2. Exclusions, stated explicitly, including surveys, specialist input and third-party data.
3. Who will do the work, named, with their grade and who signs the report.
4. Programme, with the dates the consultant depends on from you.
5. Fee basis, with hourly rates for anything outside scope.
6. Number of revisions included and what counts as a revision.
7. Professional indemnity limit, whether it is each-and-every-claim or in the aggregate, and who may rely on the report.
8. Copyright and the licence to use the document, including on a resubmission or at appeal.

Point seven is the one self-builders overlook. A report prepared for you, with a licence limited to one application, cannot simply be reused on the fresh application a year later, and the consultant may charge to extend it. The naming and dating point is covered in why every planning report needs a named author and date.

Scope gaps that cause disputes

Five gaps account for most of the arguments.

Survey seasons. Bat emergence surveys, newt surveys, reptile surveys and botanical surveys all have windows, and a scope that does not say which season is assumed is a scope that will slip by months. Make the consultant state the earliest realistic submission date given the survey calendar.

Consultee responses. Who answers the lead local flood authority's comments, the highway authority's query, the ecologist's request for more detail. Handling consultee responses is real work and is often outside a fixed fee for "preparing the report".

Validation. If the authority rejects the application for a missing document, who supplies it. Our note on redress when a consultant's report fails at validation sets out the position.

Revisions driven by design change. A revised site layout usually means the drainage calculation, the biodiversity metric and the transport statement all change, and each is chargeable unless the appointment says otherwise.

Appeal support. Almost never included, and the moment you need it most.

Fee structures and what triggers extras

A fixed fee is the right structure for a defined document on a known site. A time charge is honest for investigative work where the extent is unknown, such as a contaminated land desk study on an industrial site with a long history.

Ask for the triggers in writing. Additional site visits. Additional survey visits where the first set finds a constraint. Meetings with officers. Attendance at committee. A new drawing set. A request from a consultee. A second validation attempt. Each should have either a stated price or a rate.

Beware the very low quote with a vague scope. The fee is not the price of the document, it is the price of the first version of the document, and the gap is recovered later. Where a drafting tool helps is on the first version rather than the judgement. Having a draft in front of a professional for review is a different conversation from asking them to start from a blank page, and it changes what you are paying for.

Red flags in a first conversation

Six to listen for.

• Any suggestion that approval is assured. Nobody can promise an outcome, and a professional will say so.
• Reluctance to name the person writing the report, or to say which grade of staff will do the work.
• No professional indemnity certificate available, or one that has expired.
• A promise to deliver in two weeks a report that depends on a seasonal survey.
• No mention of the authority's local validation list, which is the first document a competent adviser checks.
• A fee quoted before any question about the site, the constraints or the local plan designation.

One honest caveat. A junior consultant in a well-run practice, supervised and signed off by a chartered author, often produces a better document than a sole practitioner working outside their field, and the register check will not tell you that. Ask who reviews the work and what the review consists of.

Where you want a specialist to check a draft rather than write it from scratch, the professional directory is the route, and the full list of document types a scheme may need is at all 66 report types by category.

This is general guidance, not legal advice. Verify any membership, licence or insurance directly with the relevant body 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.