“New NPPF 2026: Could Your Land Now Have Development Potential?”

By Glenn Cavill | Glenn Cavill Architecture

For years, some of the most exciting sites we’ve looked at have started with exactly the same sentence:

"We’ve got this piece of land, but we’ve always been told we’ll never get planning permission on it."

That conversation may now be worth having again.

On 17 August 2026, the Government published a completely rewritten National Planning Policy Framework (NPPF) for England.

And while changes to planning policy don't necessarily make exciting reading, some of these changes could create genuinely interesting opportunities for people who own land, redundant buildings or unusual sites in the countryside.

The big message I take from the new framework is this:

Good sites, supported by good architecture and a strong planning strategy, may now deserve another look.

Rural development is changing

Historically, there has often been a fairly sharp distinction between development inside a recognised settlement and development in the open countryside.

If your site sat outside a development boundary, the conversation could become difficult very quickly.

The new NPPF provides greater clarity around several forms of countryside development, including:

• limited infilling within groups of houses;

• redevelopment of previously developed land;

• reuse, extension and replacement of existing buildings;

• rural businesses and diversification; and

• exceptional new homes in isolated locations.

That doesn't mean the countryside has suddenly become a free-for-all.

Far from it.

But it does mean that some sites previously dismissed as "outside the settlement boundary" could have a more interesting planning argument than they did before.

That gap between two houses suddenly becomes interesting

One change that particularly catches my attention is the clearer recognition of limited infilling within groups of houses.

Imagine a rural lane.

There are four or five houses, perhaps a large garden or parcel of land between two of them, but technically the site sits outside the defined settlement.

Historically, that boundary could dominate the planning conversation.

The new framework potentially gives us a much more useful starting point.

Rather than simply asking:

"Is it inside the settlement boundary?"

we can start asking:

"What actually surrounds this site, and could sensitive development complete the existing pattern?"

That's a much more design-led conversation.

Redundant buildings and previously developed land

There is also clearer support for making effective use of land and buildings that already exist.

Old workshops.

Farm buildings.

Former commercial sites.

Redundant structures.

Previously developed plots.

These aren't automatically development sites, of course, but if you own something like this, I wouldn't assume its planning potential is the same today as it was when somebody looked at it five or ten years ago.

We often find that the most interesting projects aren't obvious development sites.

They're the awkward ones.

The forgotten building at the end of a lane.

The gap between properties.

The collection of agricultural buildings that no longer serves modern farming.

The old yard nobody quite knows what to do with.

That's where good architecture and intelligent planning strategy can become incredibly powerful.

The exceptional countryside house hasn't disappeared

What many people previously knew as Paragraph 84 — and before that Paragraphs 80, 79 and 55 — has now become Policy HO11.

This remains the route through which certain isolated homes of exceptional architectural quality can potentially be supported.

The standard remains deliberately high.

This isn't a loophole for putting a conventional house in the middle of a field.

The architecture needs to be genuinely outstanding, demonstrate the highest standards and respond meaningfully to its landscape and surroundings.

And I think that's exactly how it should be.

I've never believed architecture in the countryside should simply be about making a building disappear.

Sometimes the right answer is quiet and recessive.

Sometimes it's bold.

But it should always feel as though it belongs to that particular piece of land.

The landscape, views, orientation, trees, levels, materials, light and even the way you approach the building should all help generate the architecture.

That's when a house becomes more than an object sitting in a field.

It becomes part of the place.

Good design now matters even more

Perhaps one of the most interesting aspects of the new NPPF is the increased emphasis placed on design quality.

Outstanding or innovative schemes promoting high levels of sustainability can attract substantial weight in decision-making.

But there is another side to that.

Poorly designed development can also find itself in a significantly weaker planning position.

For me, that's positive.

Planning shouldn't simply be a numbers exercise asking how many houses we can squeeze onto a piece of land.

The better question is:

What is the best thing we could create here?

Could development improve the landscape?

Could it repair an awkward gap?

Could an obsolete building become an extraordinary home?

Could a new house frame a view that has never previously been appreciated?

Could architecture actually make the site better?

Those are much more interesting questions.

Rural businesses have opportunities too

The changes aren't limited to new houses.

The framework also strengthens support for rural businesses investing, expanding and adapting, alongside agricultural diversification, tourism and leisure development and the reuse of rural buildings.

For farms and rural estates in particular, this could open some interesting conversations.

A redundant barn might become accommodation.

An unused building could support a new business.

An estate might introduce tourism or leisure uses.

An existing rural enterprise might finally have the opportunity to expand.

Again, none of these things are automatic.

But they may now be worth exploring.

So, should you revisit your land?

Potentially, yes.

Particularly if you own:

• land between or close to existing houses;

• a previously developed rural site;

• redundant agricultural or commercial buildings;

• a rural business looking to diversify;

• an unusual countryside site;

• land that has previously been dismissed because it sits outside a settlement boundary; or

• a genuinely exceptional site where an outstanding individual home could be created.

One of the biggest mistakes I see is spending thousands of pounds designing a house before properly understanding the site.

We prefer to reverse that process.

Understand the land first.

Look at the planning history.

Understand the new national policy and the local development plan.

Study the surrounding settlement pattern.

Look at access, landscape, ecology, heritage, levels and views.

Then establish what the site wants to become.

Only then should you start designing.

A new planning framework. A new opportunity.

The 2026 NPPF doesn't mean planning permission has suddenly become easy.

And it certainly doesn't mean every field, barn or garden is now a development site.

But it does change the conversation.

Sites that might have received a quick "no" several years ago may now deserve a more considered "let's have another look."

And for me, that's the exciting part.

Because when planning policy creates an opportunity, architecture still has to turn that opportunity into something worth building.

If you own land, a redundant building or an unusual rural site and you've wondered what might be possible, this could be a very good time to revisit it.

Glenn Cavill Architecture can undertake an initial development potential and feasibility assessment before you commit to a full design or planning application.

Sometimes the most valuable first drawing isn't a floor plan.

It's understanding what's possible.

Glenn Cavill

Glenn Cavill Architecture

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