Reed v Secretary of State for Communities and Local Government & Another [2014] EWCA Civ 241
Reed material change of use is a Court of Appeal authority on intensification. It confirms that a use does not become a material change of use merely because the same activity becomes more intensive.
The planning question is whether the intensification produces a material change in the definable character of the use. That distinction is particularly important where occupation numbers increase but the nature of the underlying activity remains broadly the same.
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- Neutral citation
- [2014] EWCA Civ 241
- Court
- Court of Appeal (Civil Division)
- Judgment date
- 18th February 2014
- Judge
- Lord Justice Sullivan, Lord Justice Kitchin and Lord Justice Beatson
- Case number
- C1/2013/0777
What happened in Reed?
The case arose from an enforcement dispute concerning the intensified use of land. The issue before the Court of Appeal was not whether activity had increased. It had. The question was whether the increase was sufficient in planning law to amount to a material change of use.
The court considered the established principle that intensification can, in an appropriate case, constitute a material change of use. But it rejected the idea that intensification is automatically material simply because the number of people, movements or activities has risen.
The test is a change in definable character
The Court of Appeal held that the correct question is whether the intensification has produced a material change in the definable character of the use of the land.
That requires a planning judgement based on the facts. Numbers and intensity can be evidence of change, but they are not a substitute for identifying what has changed in the character of the use.
This is why two proposals involving the same numerical increase can produce different planning outcomes. The effects of the change, the way the site operates and its relationship with neighbouring land may all be relevant.
Mere intensification is not enough
Reed is often useful where a council or appellant focuses too heavily on a threshold or headcount. Crossing a numerical boundary may change the way a use is classified under the Use Classes Order, but a move between classes does not by itself prove that a material change of use has occurred.
The same principle applies in the opposite direction. A use can remain within the same broad description yet become materially different because of the scale or consequences of its operation.
The court therefore kept the focus on the real planning character of the use rather than a label alone.
Why Reed matters for HMOs and lawful development certificates
The principle was applied directly in the 2026 Micklefield Road HMO lawful-development certificate appeal. There, a Planning Inspector considered whether increasing an existing six-person Class C4 HMO to seven residents would amount to a material change of use.
The seven-person occupation fell outside Class C4, but the Inspector still had to determine, as a matter of fact and degree, whether the extra occupation changed the definable character of the use. On the particular six-bedroom arrangement in that appeal, he concluded that it did not.
The practical lesson is to separate classification from materiality. Our guides to Use Class C4, sui generis uses and lawful development certificate appeals explain the wider framework.
Source and provenance
Planning Geek hosts the complete eight-page Court of Appeal judgment for Gold members. It was extracted unchanged from Appendix 6, PDF pages 66 to 73, of the source planning statement, with the case details, page continuity and final disposal checked. The public case summary above is based on the judgment itself.
Reed Case Law Page Updated: 4th October 2026