Planning permission in Brent has a headline fee of £258 for a standard householder application. Most homeowners stop there. They shouldn't. The application fee is just one number in a much longer calculation — and depending on your property, the real cost could look very different. WhatCanIBuild can show you what's actually been approved near you, so you're not guessing before you spend a penny.
The short version
- The householder application fee in Brent is £258 — but that's rarely the full picture
- Your property's location, history, and constraints can significantly affect what you're actually dealing with
- Most homeowners don't realise how much varies street by street, not just borough by borough
The fee is fixed. Everything else isn't.
The £258 application fee applies to most standard householder projects — extensions, loft conversions, outbuildings. On top of that, Planning Portal charges a service fee of £75.83 + VAT for applications submitted online that attract a fee over £100. So before you've spoken to an architect or consultant, you're already past £300.
But here's where it gets complicated. The fee is the same whether your application sails through or gets refused. It doesn't account for resubmissions, amendments, or the cost of the advice you should have taken before you applied. And in Brent, where planning decisions can take up to 8 weeks, the cost of getting it wrong isn't just financial.
Brent isn't one place — it's dozens of them
Brent has conservation areas around Wembley and Willesden, and Article 4 directions that apply in certain streets and zones. Listed buildings sit alongside ordinary terraces. Flood zones cut through residential areas without obvious warning signs.
What that means for your project? It depends on your property. A rear extension that's completely straightforward on one street might trigger a completely different process two roads over. Most homeowners don't realise that the same project type can have different outcomes depending on constraints that aren't visible from the street.
Don't assume permitted development applies
Even if your neighbour built something similar without applying, that doesn't mean you can. Permitted development rights can be removed at the property level — not just the area level.
The hidden costs most people don't budget for
Beyond the application fee, a realistic budget for a householder planning application in Brent might include:
- Architectural drawings — required for most applications
- Pre-application advice — optional but often worth it, charged separately by Brent Council
- Planning consultant fees — if your project is near the edge of what's acceptable
- Resubmission costs — if your first application is refused
None of these are guaranteed. But none of them are unlikely either. The question is whether your specific project, on your specific street, with your property's specific history, is the kind that gets approved first time — or the kind that doesn't.
That's exactly what WhatCanIBuild is built to show you. Not just whether you're in a conservation area — you can find that out easily enough — but what similar projects on your street actually got decided, what the approval odds look like for your project type, and how your property's combination of constraints affects your real chances.
Before you budget, check what you're actually dealing with
The £258 fee is knowable. What's harder to know is whether you're walking into a straightforward application or a complicated one. In Brent, the gap between those two outcomes is wider than most people expect.
WhatCanIBuild gives you the picture your postcode alone can't tell you — what's been approved nearby, what's been refused, and what that means for your project before you've committed to anything.
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