Planning permission in the City of London starts at £548 for a householder application — but that number tells you almost nothing about what you'll actually spend. In a borough where virtually every street falls within a conservation area and a significant proportion of buildings carry listed status, the fee is often the smallest line on the bill. Until you find out what your specific property's constraints mean for your project — free, in about a minute, you're budgeting blind.
The short version
- The householder application fee is £548, but that's rarely the full picture
- Listed building consent runs alongside planning permission — and it's a separate process
- The City of London's heritage layers can multiply your costs significantly before you even submit
The fee you know about, and the ones you don't
The £548 figure is the statutory fee for a householder planning application. But in the City of London, most residential properties also require listed building consent for any external — or even some internal — alterations. Listed building consent carries no statutory fee, but it does require its own application, its own supporting documents, and very often its own specialist reports.
That means heritage statements, design-and-access statements, and sometimes structural or materials analysis — all prepared before you submit, all paid out of pocket, all at risk if the application fails.
Conservation area rules aren't uniform — even street to street
The City Corporation maintains detailed design guidance for each of its conservation areas, and the rules genuinely vary. What's acceptable on one street may be refused two turnings away. Most homeowners don't realise that being in a conservation area and knowing what that actually means for their property are two very different things.
The best way to understand how your specific address sits within those layers is to see what similar projects near your street have actually been approved or refused — because precedent matters enormously in heritage-sensitive areas, and local approval patterns are rarely what you'd expect.
Don't assume permitted development applies
Residential permitted development rights are extremely limited across the City of London. External alterations that would be automatic elsewhere almost always require full planning permission here — and often listed building consent too.
The hidden costs that catch people out
Beyond application fees, the real budget-busters in the City tend to be:
- Pre-application advice — recommended strongly in conservation areas, and charged by the City Corporation
- Specialist consultants — heritage architects, planning consultants, and structural engineers are often essential, not optional
- Revised submissions — if your first scheme doesn't meet design guidance, resubmission costs time and money
- Appeal costs — if permission is refused, the route back is slow and expensive
None of these appear in the £548 fee. And none of them are predictable without understanding exactly what constraints sit on your property and what the approval record looks like for your project type in your area.
What you actually need to know before you budget
The honest answer is that planning costs in the City of London depend almost entirely on your property's specific combination of heritage designations, the nature of your project, and how similar schemes have fared nearby. That combination is different for every address.
With WhatCanIBuild, you can check your property's approval odds and the decision history for your project type — no signup needed — so you're building a budget based on evidence, not guesswork.
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