Most homeowners in Brent start with a simple question: how much will this cost? The £548 householder application fee feels like a clear answer. It isn't — and by the time many people find out why, they've already lost time and money.
The short version
- The statutory fee for a householder application in Brent is £548 — but that's just one layer of the total cost
- Conservation areas, Article 4 Directions, and listed building status can each change what you need to submit — and what you need to pay
- Your property's specific mix of constraints affects your odds as much as your budget
The £548 is just the entry ticket
The application fee is fixed by the government — it doesn't vary by borough. What varies is everything else. Pre-application advice, heritage assessments, planning statements, architect drawings, bat surveys — Brent Council may require any combination of these depending on your project and where your property sits. Some of these are optional in theory. In practice, submitting without them on the wrong property can mean refusal or delay.
For most homeowners, the supporting documents cost more than the application fee itself. And there's no standard list — see what similar projects near your address have actually required, free, in about a minute.
Brent's constraints aren't evenly spread — and that changes everything
Brent has conservation areas around Wembley Park, Sudbury Court, Kensal Green, and Queen's Park. Article 4 Directions apply in some of those areas, removing permitted development rights that homeowners elsewhere take for granted. Listed buildings cluster around Wembley and around the historic Kensal Green Cemetery. Victorian terraces in the south and inter-war semis in the north sit in entirely different planning environments — sometimes street by street.
Most homeowners don't realise that being near a listed building or conservation area can affect their application, not just being in one. And Article 4 Directions are the kind of thing that catches people completely off guard — you can think you're doing straightforward permitted development work right up until you're told you needed permission all along.
Heritage costs can stack fast
If your property falls within or adjacent to a heritage area, you may need a specialist heritage statement or listed building consent on top of your planning application. These aren't small additions — and the requirement isn't always obvious from an address alone.
The costs you can't calculate in advance
Refusal isn't free. If your application is refused, you've paid the fee, the preparation costs, and potentially weeks of a contractor's time. Appeals are possible, but they add months and their own costs. Withdrawing before determination means you don't get the fee back either.
This is where approval odds matter more than people expect. Two identical extensions on two different streets in NW10 can have very different histories at Brent Council — different neighbours, different precedents, different outcomes. Knowing the fee is straightforward. Knowing whether your specific project on your specific street has a realistic chance is the best way to make the cost worth bearing.
WhatCanIBuild pulls together what's actually been approved and refused near your property, so you can check your project's real odds before you spend anything on drawings or surveys.
So what does planning permission actually cost in Brent?
For a straightforward householder project, budget for the £548 fee plus professional drawing costs at minimum. Add heritage constraints and you're looking at significantly more. Add a refusal and appeal and the number climbs again. The application fee is the one cost that's certain — everything else depends on your property.
The best way to understand what you're actually facing is to find out what your constraint mix means for your project — no signup needed.
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