Planning permission in Mid Devon feels like it should be simple — you either need it or you don't, and if you do, you either get it or you don't. But the reality is that two neighbours on the same street can submit near-identical projects and get completely different outcomes. WhatCanIBuild exists precisely because that complexity is almost impossible to unpick without looking at your specific property.
The short version
- Mid Devon has around 2,590 listed buildings, and being near one changes things even if your property isn't listed
- Parts of the district fall within the Blackdown Hills National Landscape and Dartmoor National Park — properties near these boundaries face tighter restrictions
- A £548 fee and an 8-week decision window are just the start — what you don't know about your plot is the real risk
The constraints most homeowners don't see coming
Mid Devon is a large, varied district. That variety is exactly what makes it so difficult to generalise about. The eastern fringes of the district fall within the Blackdown Hills National Landscape (formerly AONB), and a portion of the southern boundary edges into Dartmoor National Park territory. Properties near these designations sit on what's classified as Article 1(5) land — which quietly removes or restricts permitted development rights that homeowners elsewhere take for granted.
Most homeowners don't realise this applies to them until after they've started work. And even if you know you're near a national landscape boundary, knowing exactly what that means for your specific extension, outbuilding, or conversion is a different question entirely.
Listed buildings — it's not just about your property
With roughly 2,590 listed buildings across Mid Devon, the chances that your street, your neighbours, or your immediate surroundings carry some historic designation are higher than many people expect. Listed building consent operates separately from planning permission, but even unlisted properties in the vicinity of listed structures can find their applications scrutinised differently.
Conservation area status adds another layer. If your property sits within one, the things you assumed were permitted — like certain roof alterations or outbuildings — may require a full application. The best way to know whether any of this applies to you is to check your property directly, not assume based on what a neighbour told you.
Important
Being just outside a designated area doesn't always mean you're unaffected. Buffer zones, curtilage definitions, and local planning policies can all extend restrictions beyond the visible boundary lines.
Why approval odds vary so much in Mid Devon
National approval rate figures tell you almost nothing useful. What actually matters is whether projects like yours, on streets like yours, with a similar mix of constraints, have been approved or refused locally. That pattern is buried in years of decision data — and it shifts depending on project type, ward, and even which constraints happen to overlap on your specific plot.
A rear extension in Tiverton is a different planning proposition to the same extension in a village near the Blackdown Hills boundary. A garage conversion on a new-build estate carries different risk to one on a farmhouse with agricultural ties. These distinctions don't show up in general guidance — they only emerge when you look at comparable decisions near your address.
WhatCanIBuild pulls that local decision data together so you can see what's actually been approved and refused nearby, and what the approval pattern looks like for your project type in Mid Devon — not just nationally.
What you don't know is the real risk
The £548 application fee is the easy part. The harder part is submitting an application without knowing whether similar projects nearby have been consistently refused, or whether your property carries a constraint that quietly undermines your chances before the planning officer has even opened the file.
WhatCanIBuild shows you the combination of constraints on your property, what's been decided nearby, and what your approval odds actually look like — the things this article deliberately hasn't been able to tell you.
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