Planning permission in Croydon isn't a simple yes or no — and most homeowners only discover that after they've already started. The rules that apply to your property depend on far more than the type of project you're planning, and a general answer won't keep you out of trouble. Tools like WhatCanIBuild exist precisely because the gap between "I think I'm fine" and "I need permission" is where most people get caught out.
The short version
- Whether you need planning permission in Croydon depends heavily on your specific property, not just your project type
- Croydon has Green Belt land, conservation areas, and Article 4 directions that can remove permitted development rights entirely
- The typical decision time is 8 weeks, and a householder application costs £258 — worth knowing before you assume you don't need one
Your street matters more than you think
Croydon spans a surprisingly varied range of planning environments — from the dense urban regeneration zone around the town centre to the Green Belt edges in the south. What's allowed on one street may not be allowed on the next. Conservation area boundaries don't follow obvious lines. Article 4 directions can silently remove rights that you'd otherwise have assumed were yours. Most homeowners don't realise these designations exist until they're already mid-project.
And it's not just about the area. The planning history of your individual property matters too. Previous extensions, permitted development already used up, conditions attached to older approvals — all of these can affect what you're allowed to do now, even if your neighbours have done exactly what you're planning.
The exceptions that catch people out
Croydon's Green Belt areas to the south carry stricter controls than the rest of the borough. If your property falls within or near the Green Belt, the calculation changes significantly — and it's not always obvious from an address alone.
Conservation areas add another layer. There are multiple designated conservation areas across Croydon, and being inside one affects everything from what materials you can use to whether you need permission for work that would otherwise be permitted development. Listed buildings go further still.
Flood zones, locally listed buildings, permitted development conditions that were attached years ago — each one of these could be relevant to your property, or completely irrelevant. The only way to know is to check your specific address.
Don't assume your neighbour's project sets the precedent
Even if someone on your street recently built an extension without applying, that doesn't mean the same applies to you. Their property may have different constraints, a different planning history, or they may have simply got lucky — so far.
What actually gets approved in Croydon?
This is the question most guides won't answer — because the honest answer is: it depends. Not just on your project type, but on your specific combination of constraints, the precedents set by similar applications nearby, and how Croydon's local planning policies interact with national rules.
WhatCanIBuild is the best way to understand what's actually been approved and refused for projects like yours, on streets like yours, in Croydon. That's the difference between knowing you're in a conservation area and knowing what that actually means for your loft conversion or rear extension.
Knowing that a householder application costs £258 and takes around 8 weeks is useful. Knowing whether you need to make one — and what your chances are if you do — is what WhatCanIBuild is built to tell you.
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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