What planning rules in Hackney catch homeowners out?

Planning in Hackney is not straightforward. The borough looks like a patchwork of different rules depending on where you live, what your property looks like, and what your neighbours have already been allowed to build. Most homeowners assume their project is fine — and most homeowners are wrong at least once during the process. WhatCanIBuild exists precisely because the gap between what seems obvious and what's actually permitted is wider in a borough like Hackney than almost anywhere else in London.

Conservation areas don't just affect listed buildings

A lot of Hackney homeowners know vaguely that they're in a conservation area. Far fewer understand what that actually means for their specific project. It's not just about listed buildings or grand Victorian terraces — conservation area designations cover streets across E5, E8, N1, N16 and beyond, and the restrictions on what you can do without permission go further than most people expect.

But here's the thing: knowing you're in a conservation area is only the beginning of the question. The real question is what your specific combination of constraints means for your specific project — and that's something most homeowners genuinely cannot answer without checking.

Article 4 directions: the rule most people have never heard of

This is where Hackney catches people out more than almost anywhere else. Permitted development rights — the national rules that let you extend or alter your home without applying for planning permission — can be removed by the council through something called an Article 4 direction.

Hackney has applied these directions in several conservation areas. That means work that would be completely fine in Islington or Walthamstow might require a full planning application in parts of Hackney. Most homeowners don't realise this until after work has started, which is an uncomfortable moment.

The question isn't just whether Article 4 applies in your area. It's whether it applies to your property, for your type of project. Those are different questions.

What your street's planning history actually tells you

One thing that genuinely matters — and that most homeowners never look at — is what's been approved and refused on similar properties nearby, and crucially, why. A refusal two streets away for a rear extension might tell you something important about how Hackney's planners view that type of project in that context. So might a string of approvals.

The best way to understand what your property's specific situation means for your project is to use WhatCanIBuild, which shows you what's been approved and refused for similar projects near your address — not just whether you're in a conservation area, but what that has actually meant in practice for homeowners like you.

That's the information that changes how you plan a project. And it's the information that's genuinely hard to find any other way.

If you're planning any work on a Hackney property — even something that feels minor — the best way to know what you're actually dealing with is to check your address first. WhatCanIBuild gives you a picture of your property's constraints and your local approval landscape before you spend a penny on architects or applications.