R (on the application of Paul Knights) v South Norfolk District Council [2025] EWHC 2205 (Admin)

Knights v South Norfolk is a useful Planning Court judgment on neighbour amenity evidence and delegated planning decisions. The court did not say that every expert objection has to be quoted in the officer report. The problem was more fundamental: the officer’s conclusion relied on a particular factual premise about the neighbour’s daylight study, while an expert rebuttal directly answering that point had not been taken into account.

Neutral citation

[2025] EWHC 2205 (Admin)

Court

High Court of Justice, King's Bench Division, Planning Court

Judgment date

22nd August 2025

Judge

Neil Cameron KC, sitting as a Deputy High Court Judge

Case number

AC-2025-LON-000038

What Knights v South Norfolk decided

South Norfolk granted permission under delegated powers for a two-storey self-build house at Gillingham in Norfolk.

The neighbouring owner, Mr Knights, had commissioned chartered surveyors to assess daylight and sunlight effects. Their first report said two living-room windows would suffer very large reductions in Vertical Sky Component and that part of the rear garden and patio would be overshadowed.

The applicants disputed that analysis, including an allegation that the proposed house had been modelled in the wrong position. The neighbour’s consultants then submitted a detailed rebuttal explaining that the development had been correctly placed in the model and that the measurements came from professional survey data.

The planning officer recommended approval. The High Court quashed the permission.

Daylight and overshadowing were material planning considerations

The neighbour’s common-law right to light was not the legal issue before the court. The relevant planning question was the effect of the new dwelling on residential amenity.

The development plan policy expressly required regard to loss of daylight, overshadowing and overbearing impact. South Norfolk was therefore legally required to consider those amenity effects when determining the application.

This is an important distinction when objecting to development. A private right to light and the planning assessment of daylight or overshadowing are different legal regimes, even though similar evidence may be relevant to both.

The officer did engage with the original daylight study

The officer report did not simply ignore neighbour amenity. It had a section devoted to the issue and referred to the neighbour’s right-to-light survey.

The officer concluded that overshadowing would be acceptable because the proposed house had a hipped roof, was separated from the boundary and, critically, because the neighbour’s survey was said to have modelled the dwelling on the boundary rather than 1.5 metres away from it.

That factual premise became central to the court’s analysis.

The rebuttal went directly to the factual foundation of the decision

The expert rebuttal had expressly denied that the proposed dwelling was positioned incorrectly. It explained that the correct separation distances had been built into the calculations and offered the underlying 3D model for comparison.

The officer report did not mention the rebuttal and gave no indication that this answer to the alleged modelling error had been considered.

Neil Cameron KC held that the information was material because it went directly to the factual basis on which the officer’s amenity judgment rested.

An officer report does not need to list every document

The judgment does not impose a rule that every objection, representation or expert report must be named individually in an officer report.

The court accepted that there was no freestanding obligation to refer expressly to the rebuttal report. Planning reports are read fairly and with reasonable benevolence rather than subjected to forensic textual analysis.

The error arose because the substance of the rebuttal was not taken into account even though it directly challenged the factual premise used to reach the planning conclusion.

Planning judgment still needs a sufficient evidential foundation

The court drew on the established distinction between two aspects of planning judgment. The decision-maker decides whether the available evidence is sufficient and then exercises planning judgment on the merits.

Both stages are normally for the planning authority. But planning judgment is not evidence-free. There must be factual material on which a reasonable decision-maker can proceed.

Here the problem was at that first stage. The officer’s assessment of the evidence was incomplete because material information directly addressing the assumed modelling error was left out of account.

The decision was delegated, but the same officer-report principles applied

This was not a committee decision. The planning application was determined by officers under delegated powers.

The court confirmed that the familiar principles used when reviewing an officer report to a planning committee also apply to delegated decisions. The written record must be read sensibly as a whole, but a distinct and material defect can still make the decision unlawful.

See our wider guide to planning officer reports.

The highly likely test did not save the permission

South Norfolk argued that the court should withhold relief because the outcome would highly likely have been the same even if the rebuttal had been considered.

The judge rejected that argument. Once the missing evidence was brought into the assessment, the question whether the neighbour impact was excessive or unreasonable required a fresh planning judgment.

It was not for the court to predict how the council would make that judgment. The permission was therefore quashed.

Why Knights matters for planning objections

The case shows why a planning objection is strongest when it identifies a material planning issue and supports it with evidence that directly addresses the decision the council has to make.

It also shows the value of responding when an applicant challenges technical evidence. If a rebuttal goes to the very factual premise on which the officer proposes to decide the issue, the authority cannot lawfully proceed as though the rebuttal did not exist.

Our practical guide explains how to object to a planning application.

Read the full Knights judgment

The approved Planning Court judgment is held in the Planning Geek case law library. Gold Members can open the protected PDF below.

Knights Case Law Page Updated: 9th September 2026