Landscape professionals and competence for a visual assessment

No statute says who may write a landscape and visual impact assessment. What decides whether yours carries weight is whether the author is a chartered member of the Landscape Institute, whether the method follows the third edition of the landscape and visual impact assessment guidelines, and whether the judgements in it are transparent enough for an officer or an inspector to test. Councils do not usually impose a competence requirement in writing. They apply one anyway, through the weight they give the document.

For a developer scoping an evidence base, the practical question is what you are buying and how to tell whether you got it.

Chartered status and what it signals

The Landscape Institute is the chartered body for landscape architects in the United Kingdom. Chartered membership follows an accredited qualification, a period of recorded practical experience and an oral examination, and members are bound by a code of conduct with a disciplinary route behind it. Fellowship recognises longer standing contribution. There is also a register of practices, which tells you the office has professional indemnity cover and a quality system rather than telling you about the individual doing your work.

Chartered status is a floor rather than a guarantee. Landscape architecture covers design, management and planning, and an assessor who spends their time designing town centre streets and squares is not automatically the person to assess a wind development in open upland. Ask what the individual has assessed, in what settings, and whether they have given evidence at inquiry.

Where the scheme is environmental impact assessment development, the position hardens. The 2017 regulations require the environmental statement to be prepared by competent experts and to be accompanied by a statement of the expertise relied on, so the landscape chapter of an Environmental Impact Assessment needs an author whose competence is stated and defensible.

What the methodology assumes about the author

The guidelines are guidance, not a formula, and they say so. They set out a structure and leave the judgements to the assessor, which is precisely why competence matters more here than in fields where a British Standard specifies the method.

The assessment separates two things that non-specialists run together. Landscape effects are effects on the landscape as a resource: its character, its elements, its fabric. Visual effects are effects on views and on the visual amenity of people. A scheme can produce serious landscape effects with almost no visual ones, and the reverse happens too. An assessment that merges the two is the first sign of an author out of their depth.

Within each, sensitivity is built from susceptibility to the particular change and the value attached to the receptor, and magnitude is built from the size or scale of change, its geographical extent, its duration and its reversibility. Each of those is a judgement, and each must be reasoned on the page rather than asserted in a matrix.

So the assessor needs three capabilities at once. Field skill, to read character in the landscape rather than from a desktop character assessment. Policy literacy, to connect effects to the tests in the development plan and the National Planning Policy Framework. And the willingness to record an adverse conclusion, which is the capability clients least enjoy paying for and most need.

Viewpoint selection and why it needs judgement

Viewpoints are where an assessment is won or lost, and they are the easiest thing for an objector to attack.

Selection should be systematic: a zone of theoretical visibility to establish where the development could be seen from, then fieldwork to establish where it actually would be, then a set of viewpoints covering the range of receptors, distances and directions rather than the most flattering ones. Public rights of way, settlement edges, recognised viewpoints, transport routes and designated landscapes all need covering.

Agree the list with the local planning authority before the photography is taken. It costs one meeting and it removes the single most common criticism, which is that the assessor chose the views that suited the scheme. Where an authority will not engage, write to it with the proposed list and record the lack of response.

Seasonality is the other trap. Summer photography with hedges and trees in full leaf shows the best case. Include winter views where intervening vegetation is deciduous, and say what proportion of the year each condition covers.

Visualisations and the standards behind them

Visual representations range from a plain baseline photograph to a fully rendered and verified photomontage, and the Landscape Institute's technical guidance on visual representation sets out types with different levels of verification. The type matters because the effort, the cost and the evidential weight differ by an order of magnitude between them.

The professional points to check are whether the camera height and focal length are stated, whether the photography is joined and presented at a stated viewing distance, whether the montage is geometrically verified against surveyed reference points, and whether a wireline is provided alongside the render so the massing can be checked independently.

A rendered image with no stated method is decoration. An inspector will treat it as such, and so should you. Where the setting is urban, the same discipline applies to a Townscape and Visual Impact Assessment, with the additional question of how the model handles existing and consented development in the view.

Where a landscape strategy is a different document

The two are regularly confused in fee quotes, and they answer opposite questions.

Both may be needed. An assessment that concludes residual adverse effects remain, paired with a Landscape Strategy showing the mitigation planting and a management regime with a stated period, is a coherent package. A strategy submitted on its own, in place of an assessment, is not.

Reviewing an assessment critically

Read the document as an officer would.

1. Are landscape effects and visual effects reported separately, with separate reasoning?
2. Is the viewpoint list justified, and was it agreed with the authority?
3. Are the sensitivity and magnitude judgements explained in words, not only shown in a table?
4. Does the assessment distinguish the construction, operational and mature states, with a stated year for the mature case?
5. Are cumulative effects with consented and pending schemes assessed, and is the list of those schemes dated?
6. Does the conclusion actually say something adverse where the evidence supports it?

Point six is the honest test. An assessment in which every effect is minor and nothing is significant is either a very undemanding site or a document that will not survive cross-examination.

I will say one thing that clients dislike hearing. The residual effects section is the part inspectors read first, and it is the part most often softened in the final draft. A softened conclusion costs you credibility on everything else in the assessment.

Briefing at the right point

Commission the assessor at concept stage, not when the drawings are finished. The guidelines treat assessment as an iterative process that informs the design, and the value of that is real: moving a building line, lowering a ridge, keeping a hedgerow or shifting an access can remove an effect that mitigation planting will never conceal.

Set the brief out plainly. State the scheme parameters, the study area, the receptor types, the viewpoint agreement process, the visualisation types required for each viewpoint, the treatment of cumulative schemes, and the deliverables. Where several specialists are involved, agree who owns the baseline photography, because duplicated photography is a common and avoidable cost, a point that also comes up when comparing fee quotes for the same specialist report.

If you need a chartered reviewer to look over a draft before it goes in, PlanScope's professional directory is the route to a review and sign-off.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional 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. Councils usually expect a suitably qualified author for a landscape and visual impact assessment, and for environmental impact assessment work competent experts are legally required.