How much does planning permission really cost in Brentwood?

Most homeowners in Brentwood start with one question: how much is the fee? The answer is £548 for a householder application. But that number tells you almost nothing about what your project will actually cost — or whether it'll be approved. The picture is far more complicated than it first appears, and WhatCanIBuild exists precisely to cut through that complexity for your specific address.

The fee is just the beginning

The £548 covers the application itself. It doesn't cover architect or planning consultant fees, which are often required to prepare drawings and supporting documents. It doesn't cover pre-application advice from Brentwood Borough Council, which some homeowners pay for upfront to reduce risk. And if your application is refused and you resubmit or appeal, you're looking at additional time, cost, and uncertainty.

There's also a service charge of £75.83 + VAT applied to all planning applications submitted online through the Planning Portal where the fee exceeds £100. That's a fixed overhead most people don't factor in.

And critically — if your application is refused, the fee is not refunded. Neither is it refunded if you withdraw the application before a decision is made.

The costs that vary by property — and most people miss

Here's where Brentwood gets complicated. The borough has 13 conservation areas. If your property sits within one of them, the rules around external alterations shift in ways that aren't obvious from the outside. You might need consent for work you'd assume was straightforward.

With 526 listed buildings across the borough, there's also a meaningful chance your home — or a neighbouring property — carries a designation that affects what you can do. Listed building consent is separate from planning permission, carries no application fee, but adds significant complexity to any project.

Then there's Green Belt. Parts of Brentwood fall within it, and development in the Green Belt faces a substantially higher bar. Whether your site is affected isn't always obvious from a postcode alone.

Article 4 directions can remove permitted development rights in specific streets or areas — meaning work that would normally be exempt suddenly requires full planning permission. Most homeowners only discover this after they've already started planning.

What actually determines your chances

Knowing the fee tells you the entry cost. It doesn't tell you your odds. And in Brentwood — with its layered constraints — the gap between a smooth approval and a refused application often comes down to property-specific factors that aren't visible until you dig into the data.

What's been approved on your street? What similar projects have been refused nearby, and why? How does your property's specific combination of constraints — Green Belt, conservation area, permitted development restrictions — affect the likelihood of success?

That's exactly what WhatCanIBuild surfaces. Not just what rules exist in Brentwood in general, but what they mean for your address — including what's actually been approved and refused nearby, and what your approval odds look like before you spend a penny on an application.

The decision time in Brentwood is typically 8 weeks. That's 8 weeks of uncertainty you want to go into with your eyes open.

Enter your address and find out what your project is actually up against.

WhatCanIBuild gives you the property-level picture — not just the borough-level overview.