Planning permission in City of London
Constraints: planning.data.gov.uk (ingested 2026-06-15) · Prices: HM Land Registry UK House Price Index, October 2025 · 5 sales in October 2025 · Open Government Licence
Planning in City of London — the detail
The City of London — the Square Mile — is a planning authority unlike any other in the capital: overwhelmingly commercial, with one of the highest concentrations of listed buildings and conservation areas anywhere, and very little residential stock. Its 28 conservation areas include Bank, Smithfield, Fleet Street, Charterhouse Square, Leadenhall Market, the Temples and the area around St Paul's Cathedral, and protected views of the cathedral and the Tower of London shape what can be built.
The borough's residential population is concentrated in a handful of places — chiefly the Barbican and Golden Lane estates, both Grade II listed and within the Barbican and Golden Lane Conservation Area (designated 2018), and the Temple. For these homes, listed building consent is central: the City's Barbican and Golden Lane Conservation Area SPD and the Barbican Estate Listed Building Management Guidelines set out exactly what alterations need consent, down to windows, finishes and fittings.
Permitted development does very little work in the City: most homes are listed flats, which have no permitted development rights, and conservation-area and listed-building controls apply almost everywhere. For any change, assume a full application and, in the listed estates, listed building consent — and check the City of London Local Plan and the relevant management guidelines before designing.
Policy detail lives in the City of London local plan and applications are submitted via the City of London planning portal.
Conservation areas in City of London
Real · planning.data.gov.ukEvery designated conservation area in City of London from the official dataset — inside one, permitted development narrows and design scrutiny rises.
- Bank
- Barbican and Golden Lane
- Bishopsgate
- Bow Lane
- Brewery
- Chancery Lane
- Charterhouse Square
- Creechurch
- Crescent
- Eastcheap
- Fenchurch Street Station
- Finsbury Circus
- Fleet Street
- Foster Lane
- Guildhall
- Laurence Poutney Hill
- Leadenhall Market
- Lloyd's Avenue
- New Broad Street
- Newgate Street
- Postman's Park
- Queen Street
- Smithfield
- St Helen's Place
- St Paul's Cathedral
- Temples
- Trinity Square
- Whitefriars
Source: planning.data.gov.uk · Open Government Licence. Boundaries are checked at address level by the area report.
Article 4 directions in City of London
Real · planning.data.gov.ukNo householder Article 4 geometry for the City of London appears in the national planning.data.gov.uk dataset, and the City is not an HMO-conversion borough. What constrains residential change here is the near-total conservation-area coverage and the very high concentration of listed buildings — including the Grade II–listed Barbican and Golden Lane estates — where listed building consent and conservation-area control, not Article 4 directions, are the operative regime. Check the City of London Local Plan and the relevant management guidelines.
Source: planning.data.gov.uk · Open Government Licence. Checked at address level by the area report.
What gets built in City of London
Barely applies — the City's homes are listed Barbican and Golden Lane flats with no PD rights, where listed building consent governs any change.
Costs & planning route →Not applicable in practice — the City's residential stock is listed flats, not terraced houses with side returns.
Costs & planning route →Barely relevant — the City's listed flats can't be loft-converted by a household; alterations need listed building consent.
Costs & planning route →Effectively not applicable — basements under the City's listed estates are governed by listed building consent and estate management guidelines, not householder PD.
Costs & planning route →Not applicable — the City's homes are listed flats without private gardens or outbuilding rights.
Costs & planning route →City of London postcode by postcode
City of London planning, asked straight
Will I need listed building consent in the City of London?
Is my City of London flat in a conservation area?
What guidance applies to alterations in the Barbican?
How do I check constraints for a City of London address?
Related reading
If your home is listed, planning permission is only half the story.
Read the guide →Your lease is a contract — and the council was never the only gatekeeper.
Read the guide →Designated land edits the rulebook — here's the exact redline.
Read the guide →What applies at your address?
Borough-level rules only narrow it down. Enter a City of London postcode for the live constraint check — conservation area, Article 4 and sold-price comparables, cited to source.
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