The Five-Unit Rule: How Landowners Are Diversifying Without a Planning Battle

Farm incomes have been squeezed for years, and diversification has gone from a buzzword to a necessity for a lot of landowners. Holiday lets, wedding barns, farm shops — all well-trodden paths, and all requiring significant capital and, usually, full planning permission.

There's a quieter option that rarely comes up in the diversification conversation: a handful of shepherd's huts, pods, or bell tents in a corner field, certified under an exemption that's existed in UK law since 1960 and needs no planning application at all.

Small, on purpose

The rule — a paragraph 5 exemption under the Caravan Sites and Control of Development Act 1960 — caps things at five units. That ceiling is the whole point. It's designed for exactly this kind of low-impact, small-scale use: land that isn't being farmed intensively, or a field that sits empty for most of the year, brought into gentle use without construction, groundworks, or a change-of-use application.

For a working farm, that means:

• No disruption to existing agricultural use elsewhere on the land
• No planning application, and no six-month wait to find out if it's been approved
• A seasonal income stream that can start small and prove itself before any bigger investment
• Units that are, by definition, movable — nothing permanent, nothing that locks you in

It won't replace a farm's income on its own. But as a way to test whether hospitality has legs on your land, without betting the farm on it (literally), it's about as low-risk as diversification gets.

Who actually certifies a site

This is the part that trips people up: you can't self-certify. The exemption only works through an organisation that's been granted the legal authority to certify sites on landowners' behalf — Wanderlust Camping Club is one of a small number of these across the UK.

That's a deliberate safeguard, not red tape for its own sake. Certification means someone has actually visited, checked access and drainage, and confirmed the site meets the standard — because every site certified under an organisation's name reflects on that organisation. Local authorities are still notified and can object, though for well-sited, well-run applications that's rarely where things end up.

What five units actually looks like on the ground

Five doesn't sound like much until you picture it: five shepherd's huts tucked along a treeline, five bell tents in a wildflower meadow, five pods with a view over the valley. For a lot of landowners, that's not a compromise — it's the appeal. Small enough to run without hiring staff. Small enough that it doesn't change the character of a working farm. Large enough to be worth doing properly.

It also tends to suit exactly the kind of guest who's actively looking for something that isn't a 200-pitch holiday park — which, if hospitality is new territory for you, is a considerably gentler crowd to start with.

The honest trade-off

This route isn't for everyone. If the ambition is a proper glamping business — twenty units, a shower block, a bar — full planning permission is the right conversation to have, and probably sooner rather than later. But if the question is "could this field earn something without a year of planning limbo," the five-unit exemption is very often the answer nobody's told you about yet.

Have a field, paddock, or a bit of spare land that's doing nothing right now? Get in touch to talk through whether certification could work for you.