Who should write an LVIA: chartership and GLVIA3 competence

The lvia author qualification question has a short answer and a longer one. Short: a chartered member of the Landscape Institute, with demonstrable experience of assessment work rather than design work. Longer: chartership tells you someone has been assessed against a competence framework, but the third edition of the landscape and visual impact assessment guidelines depends on reasoned professional judgement, and judgement is not evenly distributed across a profession that also does planting plans and street design.

For a rural landowner promoting a scheme in a sensitive landscape, that distinction is the difference between an assessment that survives consultee scrutiny and one that gets dismissed in a paragraph.

What the guidelines expect of the author

The guidelines are deliberately not a formula. They set out a structured approach and then require the assessor to explain the reasoning behind every judgement, in terms a reader can follow and disagree with.

Two things follow from that. The author has to understand the difference between landscape effects, which are effects on the landscape as a resource in its own right, and visual effects, which are effects on views and on the visual amenity of people. Conflating the two is the commonest sign of an inexperienced author, and it is visible from the contents page.

The author also has to build sensitivity from susceptibility and value, and magnitude from size or scale, geographical extent, duration and reversibility, then combine them transparently. A matrix that produces an answer without any explanation of why a receptor was judged highly susceptible is not following the guidelines, whatever the front cover says.

Chartered membership routes

The Landscape Institute is the chartered body, and chartered membership is assessed through a structured pathway with a portfolio and an examination against defined competences. The post-nominals to look for are those of a chartered member or a fellow.

Membership grades below chartered exist for those still working through the pathway, and plenty of good assessment work is done by people at that stage under chartered supervision. What matters is that the person who signs the report is chartered and has stood behind the judgements.

Ask for two recent assessments in comparable settings and read the judgement sections. You will learn more in twenty minutes than from any list of qualifications.

Landscape architecture against visual assessment

A chartered landscape architect may spend a career on parks, streets and housing layouts and never write an assessment. Another may do nothing else. Both hold the same post-nominals.

The design skill and the assessment skill overlap but they are not the same. Design asks what should be built here. Assessment asks what the effects would be if this were built here, and requires the author to reach conclusions that may not suit the client.

That last point is the real competence test. An assessment which concludes that every effect is negligible, on a scheme that plainly changes the view from a ridge-top footpath, has been written by someone who has forgotten which document they are producing. Consultees notice, and the whole assessment loses credibility including the parts that were right.

Where the same practice is doing both the design and the assessment, that is normal and not improper, but the assessment should be identifiably separate work with its own author. The wider trade-off is covered in our note on a multidisciplinary practice or separate specialists.

Visualisation standards

Visual representation is governed by published technical guidance from the Landscape Institute, which defines types of visualisation running from simple annotated photographs up to verifiable photomontages produced to a survey-controlled method.

The type you need depends on the sensitivity of the receptor and the contentiousness of the scheme. A verifiable photomontage requires the camera position to be surveyed, targets in the view to be surveyed, a stated focal length equivalent, a recorded camera height, and a documented process so that a third party can check the result. It costs several times what an indicative visual costs, and on a contested scheme in a designated landscape it is the only kind that will be accepted.

Ask which type the consultant proposes and why. Ask who produces them. And ask whether the methodology statement will be included, because a visualisation without a stated method is an illustration rather than evidence.

Judgement and how it is justified

The section of an assessment that gets read most carefully is the one where the author explains why a particular effect is judged as it is.

Good practice looks like this. Name the receptor precisely, whether a stretch of a named public right of way, the residents of a particular group of properties, or a defined landscape character area. State the baseline condition. State susceptibility and why, referring to what the receptor is and how it experiences the landscape. State value and its source, whether a designation, a local plan policy, a community association or the character assessment. Then set out magnitude with distances, angles and screening described rather than asserted. Then reach the conclusion and say what would change it.

Avoid two habits. Do not present numerical scores added together, because the guidelines warn against it and inspectors dislike it. And do not describe every adverse effect as temporary because planting will grow, unless the assessment also states the establishment period and the effect in the meantime.

Where the scheme sits in a townscape rather than open countryside, the equivalent work is a Townscape and Visual Impact Assessment, and the competence questions are similar with an added emphasis on urban character and heritage setting.

What authorities and consultees expect

Local planning authorities with in-house landscape officers will read the method before the conclusions. National Park authorities and the bodies responsible for National Landscapes apply the highest scrutiny, and they usually want the viewpoint list agreed before the assessment is written rather than presented as a finished product.

Statutory consultees become involved where a designated landscape or a nationally significant view is affected. Their comments tend to focus on three things: whether the viewpoints represent the range of effects rather than the most favourable ones, whether the seasonal timing of photography reflects the worst case, and whether cumulative effects with other consented or proposed schemes have been addressed.

Agreeing scope in advance deals with all three. It also protects the budget, because a scope agreed in writing is a scope the authority cannot expand after the assessment is complete.

Briefing a proportionate assessment

The guidelines are explicit that the scale of assessment should match the scale of the scheme, and the most common waste of money in this field is a full assessment where a short appraisal would do.

For a single dwelling in an ordinary lowland landscape, a landscape and visual appraisal of a dozen pages with annotated photographs from the nearest public vantage points is usually enough. For a large scheme in or near a designated landscape, a full Landscape and Visual Impact Assessment with an agreed viewpoint list, verifiable visualisations and a cumulative chapter is the starting point.

Ask the consultant to recommend the level and to justify it. A consultant who proposes the full exercise for every scheme is not applying the guidelines. Councils usually expect a suitably qualified author for landscape assessment work and professional review is strongly advised before submission. Where the site data is incomplete at briefing stage, briefing a specialist when the site data is incomplete sets out how to scope without guessing.

Find a reviewer in the PlanScope professional directory to check a landscape draft before it reaches the council.

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.