Mansell vTonbridge And Malling Borough Council

Factual and Procedural Background

The appellant, Plaintiff, challenged the planning permission granted by Defendant, Company A, on land owned by Company B, for redevelopment of a site comprising a large barn and a bungalow into four detached dwellings. The site is located outside the village confines in a designated countryside area. Plaintiff, residing in a neighbouring listed property, objected to the proposal. The planning permission was granted despite the proposal conflicting with the development plan. The local planning authority's planning officer recommended approval based partly on a "fallback position" involving permitted development rights under Class Q of the Town and Country Planning (General Permitted Development) (England) Order 2015 ("GPDO"). Plaintiff sought judicial review of the permission, which was dismissed by the court below. Permission to appeal was granted.

Legal Issues Presented

1. Whether the council correctly interpreted and lawfully applied the provisions of Class Q in the GPDO.
2. Whether the council was entitled to accept there was a real prospect of the fallback development being implemented.
3. Whether the council misunderstood or misapplied the "presumption in favour of sustainable development" in the National Planning Policy Framework (NPPF).

Arguments of the Parties

Appellant's Arguments

• The planning officer misinterpreted Class Q, particularly sub-paragraphs Q.1(b) and Q.1(h), by applying the 450 square metre floor space limit only to the part of the building changing use, rather than the total floor space of the existing building.
• The fallback development relied on by the council lacked a "real prospect" of implementation as there was no evidence the landowner or developer intended to pursue it; it was a theoretical possibility only.
• The council misapplied the "presumption in favour of sustainable development" under paragraph 14 of the NPPF by treating it as a material consideration favouring the proposal, despite the development plan being in place and up-to-date.

Respondent's Arguments

• The council correctly interpreted Class Q, applying the 450 square metre limit to the cumulative floor space actually changing use, consistent with the GPDO's definition of "building" as including parts of a building.
• The fallback position was properly considered a "realistic" prospect based on planning history, landowner intention, and permitted development rights, and it was lawful for the council to take this into account without a specific application or firm design for fallback development.
• The planning officer did not misapply the presumption in favour of sustainable development; the officer's report properly distinguished between the development plan conflict and other material considerations, and did not treat the presumption as applying or giving the proposal a "tilted balance".

Table of Precedents Cited

Precedent	Rule or Principle Cited For	Application by the Court
Barwood Strategic Land II LLP v East Staffordshire Borough Council [2017] EWCA Civ 893	Clarification of the presumption in favour of sustainable development under paragraph 14 of the NPPF and its proper application in planning decisions.	The court relied on this recent decision to explain the correct approach to the presumption in favour of sustainable development and rejected arguments inconsistent with it.
Samuel Smith Old Brewery (Tadcaster) v Secretary of State for Communities and Local Government [2009] JPL 1326	Definition of "real prospect" of fallback development as more than theoretical but not necessarily probable or likely.	The court applied the principle that a real prospect can be a possibility and that planning judgment is central to assessing fallback prospects.
R. v Secretary of State for the Environment and Havering London Borough Council, ex parte P.F. Ahern (London) Ltd [1998] Env. L.R. 189	Requirement that fallback development must be an intended use, not merely a legal entitlement, to be a material consideration.	The court considered this principle but found the fallback in the present case met the necessary threshold of realistic intention.
R. v Selby District Council, ex parte Oxton Farms [1997] E.G.C.S. 60	Principles guiding the court's approach to planning officers' reports, emphasizing reasonable benevolence and local knowledge.	The court applied this standard in assessing whether the officer's report was materially misleading or flawed.
R. (on the application of Siraj) v Kirklees Metropolitan Borough Council [2010] EWCA Civ 1286	Confirmation of the approach to reviewing planning officers' reports and the threshold for judicial intervention.	The court followed this precedent in concluding no material defect existed in the officer's advice.
R. (on the application of Loader) v Rother District Council [2016] EWCA Civ 795	Example of significant error of fact in officer's report leading to misdirection of committee.	Referenced as a contrast to the present case where no such error was found.
Watermead Parish Council v Aylesbury Vale District Council [2017] EWCA Civ 152	Example of misdirection in planning officer's report regarding policy interpretation.	Used to illustrate when courts may intervene, which did not apply here.
R. (on the application of Williams) v Powys County Council [2017] EWCA Civ 427	Necessity for explicit advice in officer's report on matters material to decision-making.	The court found no such omission or defect in the present case.
Palmer v Herefordshire Council [2016] EWCA Civ 1061	Assumption that members follow officer advice unless evidence suggests otherwise.	The court assumed the committee acted on the officer's advice in this case.
R. (on the application of Morge) v Hampshire County Council [2011] UKSC 2	Approach to reading planning officers' reports with reasonable benevolence.	Supported the court's approach to the officer's report here.
R. v Mendip District Council, ex parte Fabre (2000) 80 P. & C.R. 500	Further authority on reading and assessing planning officers' reports.	Referenced to support the standard applied.
R. (on the application of Kverndal) v London Borough of Hounslow Council [2015] EWHC 3084 (Admin)	Application of the "real prospect" test to fallback development.	Reinforced the principle that planning judgment is key in assessing fallback prospects.
Brentwood Borough Council v Secretary of State for the Environment [1996] 72 P. & C.R. 61	Authority on fallback development and planning considerations.	Cited as part of the case law framework governing fallback development assessment.
Trustees of the Barker Mill Estates v Secretary of State for Communities and Local Government [2016] EWHC 3028 (Admin)	Interpretation of the presumption in favour of sustainable development and its application.	Approved by the court as consistent with the Barwood decision and applied here.
Crane v Secretary of State for Communities and Local Government [2015] EWHC 425 (Admin)	Planning judgment regarding weight to be given to housing supply and presumption in favour of sustainable development.	Referenced to illustrate that absence of housing land supply is not determinative and planning judgment is central.

Court's Reasoning and Analysis

The court first addressed the interpretation of Class Q of the GPDO, focusing on whether the 450 square metre floor space limit applied to the total existing building or only to the part changing use. Relying on the statutory definition of "building" as including any part thereof, the court agreed with the lower court that the limit applies to the cumulative floor space changing use, not to the entire building's floor space. This interpretation avoids arbitrary distinctions based on total building size and aligns with the statutory text, including the use of the word "cumulative". The court rejected the appellant's argument that this renders sub-paragraph Q.1(b) redundant, explaining that it serves a distinct purpose from sub-paragraph Q.1(h).

Regarding the fallback position, the court found that the council lawfully considered the fallback development as a realistic prospect. The evidence showed the landowner's clear intention to develop the site for residential use, supported by planning history, statements from the landowner and agents, and the existence of permitted development rights under Class Q. The court emphasized that a "real prospect" need not be probable or likely, only a real possibility, and that planning judgment is crucial. The court rejected the appellant's contention that there was no evidence of a specific intended fallback scheme, emphasizing the lawful scope for planning discretion in such assessments.

On the presumption in favour of sustainable development under paragraph 14 of the NPPF, the court carefully analyzed the planning officer's report and the relevant case law, particularly the Barwood decision. It found that the officer did not misapply or misunderstand the presumption. The report correctly identified the development plan conflict and did not treat the presumption as applying or giving the proposal a tilted balance. References to sustainable development in the report related to government policy momentum and material considerations distinct from the presumption. The court stressed the importance of reading planning reports with reasonable benevolence, recognizing the role of planning judgment and the local knowledge of councillors. The court concluded there was no material defect in the officer's advice that would have misled the committee.

Holding and Implications

The court's final decision was to DISMISS THE APPEAL.

The direct effect of this decision is to uphold the planning permission granted by the local planning authority for the redevelopment of the site. The court confirmed that the council lawfully interpreted Class Q of the GPDO, properly considered the fallback development as a realistic prospect, and did not misapply the presumption in favour of sustainable development under the NPPF. No new legal precedent was established; rather, the court reaffirmed established principles regarding statutory interpretation, fallback development, and the role of planning judgment in applying national policy. The decision underscores the courts' approach to reviewing planning officers' reports with reasonable benevolence and respecting the discretion of local planning authorities and committees in balancing competing considerations.