Who can prepare an LVIA and what CMLI actually means

Nobody holds a licence to write a landscape and visual impact assessment. There is no register, no statutory competent person regime and no offence in getting it wrong, which sets an LVIA apart from a bat survey or a biodiversity gain plan. The question of who can prepare an LVIA is therefore a question about weight: whose judgement will a case officer, a National Landscape body or a planning inspector accept when it conflicts with the objectors' view of the same field.

For a rural site that answer usually points to a chartered landscape architect working to the third edition of the Guidelines for Landscape and Visual Impact Assessment, published jointly by the Landscape Institute and the Institute of Environmental Management and Assessment. GLVIA3 is not law. It is the method everyone in the room is assumed to be using, and departures from it need explaining.

What GLVIA3 expects of the author

The method rests on a distinction that non-specialists routinely collapse. Landscape effects are effects on the landscape as a resource, meaning its character, its elements and its qualities. Visual effects are effects on people and on the views they have. One assessment can find limited landscape effect and severe visual effect, or the reverse.

An author who understands that will structure the report accordingly: baseline landscape character with reference to the National Character Areas and the relevant county or district character assessment, then landscape receptors and their sensitivity, then a separate visual baseline with a viewpoint schedule, then magnitude and the reasoned significance judgement for each.

An author who does not will produce a document that describes the view from the road, calls it minor, and gets very little traction at appeal.

Sensitivity is the other place where inexperience shows. Under GLVIA3 the sensitivity of a receptor combines its susceptibility to the particular change proposed with the value attached to it, and those are separate ideas. A well used public right of way across an ordinary arable field has high susceptibility to a tall structure and moderate value. A layby on a trunk road inside a National Landscape has low susceptibility and high value. Assessors who treat designation alone as sensitivity end up rating every receptor in a National Landscape as high, which flattens the assessment and tells the officer nothing.

GLVIA3 also insists that professional judgement is transparent. Every significance conclusion has to show its working, so the reader can see why a receptor was rated high sensitivity and why the magnitude of change was rated medium. That transparency requirement is what separates a defensible assessment from an opinion in a nice font.

Landscape Institute grades in plain terms

The Landscape Institute is the chartered body for the profession, and its membership grades are the shorthand councils read on a title page.

A Licentiate can and often does carry out the survey work and draft the assessment. What matters is who signs it and takes responsibility for the judgements. On a scheme in a National Landscape, or where the applicant is arguing that a site is not a valued landscape in policy terms, expect the objectors to look at that title page first.

There are also landscape planners and landscape managers within the same chartered grade, so CMLI on its own does not tell you the person is an assessment specialist. Ask for two recent LVIAs on comparable sites and read the significance chapter of each.

Where authorship changes the outcome

On an ordinary field-edge scheme in an undesignated area, a proportionate appraisal by a competent generalist may be enough, and the council will judge it on content. Three situations shift that.

The first is designated land. National Landscapes and National Parks carry a statutory duty on public bodies to have regard to their purposes under section 85 of the Countryside and Rights of Way Act 2000, strengthened by the Levelling-up and Regeneration Act 2023. Assessments in those areas are read by officers who work with landscape character every day.

The second is EIA development, where landscape is a scoped-in topic and the Environmental Statement must be prepared by competent experts under the EIA Regulations 2017. Landscape chapters in that context are written by chartered assessors as a matter of course.

The third is a contested valued landscape argument. Where an objector commissions a chartered assessment and the applicant has not, the imbalance shows in the officer's report.

Viewpoints, photography and the evidence that gets challenged

More LVIAs are undermined by their photography than by their text. The Landscape Institute publishes technical guidance on visual representation of development proposals covering camera equipment, focal length, stitching, printing size and the difference between a photograph, a photomontage and a verified view.

Practical sequence for a rural application:

1. Draw a preliminary zone of theoretical visibility and propose a viewpoint schedule.
2. Send the schedule to the council, and to the National Landscape or National Park team where relevant, before any survey.
3. Photograph in appropriate conditions, recording camera position, height, direction and date at each viewpoint.
4. Produce verified photomontages for the viewpoints that will decide the case, not for all of them.
5. Present winter and summer conditions where screening vegetation is deciduous.

Councils rarely object to a viewpoint schedule in writing, and that silence is still useful. It removes the argument that the assessor chose comfortable views.

Briefing the work on a rural site

Give the assessor the site boundary, the topographic survey, the proposed layout with building heights, and any landscape mitigation you are prepared to fund. Withholding the last of these is a false economy. Mitigation planting that appears only at appeal reads as an afterthought.

Ask for the assessment to state, in one paragraph, what the residual effect is after mitigation at year one and at year fifteen. That single paragraph is what gets quoted in the officer report.

Timing matters more on rural commissions than most applicants expect. Deciduous screening reads very differently in July and in January, and an assessment based solely on summer photography invites the objection that the winter position was avoided. If the programme allows only one survey season, say which one it was and explain the effect of the other in the text. Honesty there costs nothing and removes an easy line of attack.

Budget for the report to be revisited. Layouts change during determination, ridge heights move, and an LVIA written against a superseded drawing is worse than none at all because the discrepancy is obvious to anyone comparing the two. Agree a fee for one round of revision at the outset rather than negotiating it under time pressure at week six.

Where the scheme also affects a settlement edge or a conservation area, commission the Townscape and Visual Impact Assessment alongside the landscape and visual work so the two share a viewpoint set and do not contradict each other on receptor sensitivity.

What a drafting tool can and cannot do here

PlanScope drafts an LVIA structured to UK planning policy, with the character baseline, the policy framework and the assessment tables laid out and gaps flagged as points to confirm. That saves the hours a practice spends assembling policy context and section headings.

The judgements cannot be automated. Sensitivity, magnitude and residual effect depend on standing in the field at the right time of year and understanding what the receptor sees. Councils usually expect a suitably qualified author for landscape work, and professional review is strongly advised before submission. PlanScope's professional directory is the route to arrange that review, and the directory page explains how a reviewer signs off a draft.

If you are still working out which studies a rural scheme needs, the full report index groups the 66 report types by category so you can see where landscape, heritage and ecology overlap.

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.