Living in the City of London puts you in one of the most unusual planning environments in England. The area is overwhelmingly commercial, residential properties are rare, and the rules that apply to your home almost certainly don't work the way you'd expect. Most homeowners assume that what's allowed elsewhere is allowed here — that assumption is where the trouble starts. WhatCanIBuild can show you what's actually been approved and refused on properties like yours, so you're not guessing.
The short version
- Nearly the entire City of London is a conservation area, which immediately changes what you can do without permission
- Article 4 directions are widespread and can remove permitted development rights you'd otherwise have
- Residential properties here are rare and unusual — the rules that apply to houses in other boroughs often don't apply in the same way
- What matters isn't just the general rule — it's what that rule means for your specific property
Conservation area rules are stricter than most people realise
Almost every residential address in the City of London sits within a conservation area. Most homeowners know that sounds significant — but very few understand what it actually means for their project. It's not just about listed buildings or obvious heritage assets. Conservation area status changes what counts as permitted development, what requires approval, and what's likely to be refused. And it's not uniform: the rules that apply to one street may not apply the next street over, or even to the property next door.
The question isn't whether you're in a conservation area. You almost certainly are. The question is what that means for your specific project on your specific property — and that's something most homeowners genuinely can't answer without looking into it properly.
Article 4 directions quietly remove rights you thought you had
This is where homeowners in the City of London most often get caught out. Permitted development rights — the things you're normally allowed to do without applying for planning permission — can be removed by something called an Article 4 direction. And in the City of London, these directions are widespread.
You might assume you can make a change to your property without permission, because you've heard that's how it works elsewhere. But if an Article 4 direction applies to your address, that assumption is wrong. The work you're planning could require a full planning application — and if you proceed without one, you may be required to undo it.
Most homeowners don't realise an Article 4 direction applies to them until after they've already started.
Don't assume your neighbour's rules are your rules
Even in the same street, Article 4 directions and conservation area conditions can apply differently depending on the specific property. What your neighbour did without permission may not be available to you.
Residential properties here are a special case
The City of London's planning system is built around one of the most intensely commercial environments in the world. Residential properties exist within it, but they're the exception — not what the rules were designed around. That means the standard guidance you'll find online, written with typical suburban houses in mind, often doesn't map cleanly onto what's permitted here.
The type of property, its history, any previous permitted development already used, its listed status, its position within the conservation area — all of these interact in ways that are genuinely difficult to unpick without looking at your specific address. It depends on your property in ways that general guidance simply can't account for.
The best way to understand what that combination of factors actually means for your project — including what similar projects nearby have been approved or refused, and why — is to use WhatCanIBuild. It goes beyond telling you what constraints exist and shows you what they mean in practice for your type of project.
Enter your address and find out what your property's planning history actually looks like — before you commit to anything.
WhatCanIBuild pulls together the things that matter most: what's been approved nearby, what's been refused, and what your property's specific combination of constraints means for your chances. That's the information that's actually useful.
These rules vary by property
Conservation areas, Article 4 directions, and other constraints can change everything. Check what actually applies to your address.
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