Planning permission in Derby starts at £548 for a householder application — and that's the number most people stop at. But the actual cost of getting permission approved (or finding out you needed it in the first place) is almost always higher, and often by a significant margin. WhatCanIBuild can show you what's really at stake for your specific property before you spend a penny.
The short version
- The standard householder fee is £548, but that's rarely the full picture
- Derby has 15 conservation areas, ~390 listed buildings, and Derwent Valley Mills World Heritage Site land — all of which change what you can and can't do
- Your postcode is just the start — individual streets and even individual properties face different rules
The £548 fee is the floor, not the ceiling
The application fee is fixed by the government, but it doesn't cover everything you'll need to submit. Depending on your project and your property, you may also need a heritage impact assessment, a design and access statement, an arboricultural report, drainage details, or other supporting documents. Each of these costs money — sometimes more than the fee itself. Most homeowners don't realise this until they've already committed to a project.
There's also a Planning Portal service charge of £75.83 + VAT that applies to any online application with a fee over £100. Small, but worth knowing.
Derby's constraints are more complicated than they look
This is where the real uncertainty lives. Derby has 15 conservation areas spread across the city, and the rules inside them aren't uniform — what's acceptable on one street might be refused on the next. The Derwent Valley Mills World Heritage Site adds another layer: properties on Article 1(5) land face restrictions on permitted development rights that most homeowners never anticipate.
Then there are the roughly 390 listed buildings. If your property is listed — or even close to one — the implications for your project are significant, and the costs involved in getting consent can be very different from a standard application. No application fee is required for listed building consent, but that doesn't mean it's straightforward or cheap.
Green Belt land sits at Derby's edges too. If your postcode is DE73 or on the outer fringes, your permitted development position might be very different from a property closer to the city centre.
Don't assume your neighbours' experience applies to you
Two houses on the same street can face completely different planning constraints. What sailed through for next door might be refused for you — or require additional reports that add weeks and hundreds of pounds to the process.
The cost of getting it wrong
Refusal isn't free. If your application is refused, the fee isn't refunded. If you withdraw after submission, the fee isn't refunded. And if you start work without permission and need a retrospective application — or an enforcement notice lands — the costs escalate quickly.
This is why the smartest thing to do before budgeting isn't to guess at the rules, but to understand what's actually been approved and refused for properties like yours in Derby. Not just whether you're in a conservation area — but what that conservation area designation has meant in practice for similar projects nearby, on similar streets, with similar property types.
WhatCanIBuild is the best way to get that picture. It shows you approval patterns, refusal reasons, and what similar projects near your address have actually experienced — the stuff that doesn't show up in a fee table.
Before you commit to a budget, a builder, or even a designer, it's worth knowing what you're actually dealing with. WhatCanIBuild gives you that for your specific Derby property.
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