What Article 4 takes away in Southwark, what it leaves alone for extensions and lofts, and how to plan a scheme around it. Do the arithmetic before committing: half of the borough's 2025 sales fell between £400,000 and £797,500 on the Land Registry quartiles, and that spread is the context any building budget here should be read against. Source: HM Land Registry Price Paid Data
Named permitted development rights across the second largest recorded coverage in London — most often the change from a dwelling to a small house in multiple occupation. Southwark also holds 56 conservation areas covering about 782 hectares. The borough issued 604 lawful development certificates over the same three years, and approved 93.8% of the householder applications it decided.
| Measure | Southwark | London |
|---|---|---|
| Article 4 areas in the register | 480 | second of the 16 boroughs in the Article 4 register |
| Conservation areas (national register) | 56 covering 782 ha | 1,141 |
| Listed buildings in the register | 913 | — |
| Tree preservation zones in the register | 724 | — |
| Householder approval rate | 93.8% | 83.0% |
| Lawful development certificates issued | 604 | — |
| Householder appeals allowed after refusal | 28.6% of 112 | 40.8% of 13,067 |
Sources: registers from the MHCLG Planning Data Platform, retrieved 1 September 2026, excluding revoked and superseded entries; decision figures from MHCLG PS1 and PS2, twelve quarters to March 2026; appeals from Planning Inspectorate casework decided 2016–2026. Where a direction applies, the removed right needs a householder application at £548 rather than the £249 prior approval route.
In detailYes — Article 4 for HMOs borough-wide; additional Article 4 for office-to-residential in Bermondsey and Elephant & Castle.
A Direction takes away one Permitted Development right within a mapped boundary. The two that reach ordinary owners are the change from a single dwelling to a small HMO, and the office-to-residential conversion. Where the Direction covers either, it needs planning permission like any other development. For addresses outside the line, nothing has changed.
Yes. Article 4 in most London boroughs targets HMO conversions and office-to-residential, not householder extensions. Standard rear extensions and loft conversions remain available under Permitted Development unless your property is in a conservation area or is listed.
Southwark's planning portal carries the mapping, and we will look it up for you. The check is made against the address rather than the postcode, because a Direction can take in one side of a road and leave the other alone. Quoting off a district would be a guess dressed up as an answer.
Build inside a Direction without the permission it restores and the council can act. The mildest outcome is a retrospective application you may well lose. Past that sit a stop notice, which ends work on the spot, and an enforcement notice requiring the building to come back out again. Checking beforehand is an hour of somebody's time.



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Every Southwark district on our books, the housing that fills it, and which authority takes an application from it. Fees quoted are 2026 statutory England rates. On the value side of the question: the Land Registry price-paid file records 3,093 Southwark sales in 2025 at a median of £540,000, down 3.6% on the £560,000 median of the year before. Contains HM Land Registry data (c) Crown copyright and database right 2026
| Postcode | Area | Dominant stock | What it means for a scheme inside an Article 4 area |
|---|---|---|---|
| SE1 | Bermondsey / Borough / Waterloo | Georgian terraces, post-war flats, new-build | SE1 reaches from Bermondsey across Borough to Waterloo, crossing into Lambeth on the way, so which council determines an application here is a street-level question. |
| SE5 | Camberwell | Georgian villas, Victorian terraces | SE5 is Camberwell, shared with Lambeth along its western edge. The address decides the authority, and it is worth checking rather than assuming. |
| SE15 | Peckham / Nunhead | Victorian terraces, post-war estates | Peckham and Nunhead sit inside SE15, which is wholly Southwark, so applications from that district are validated here. |
| SE16 | Bermondsey / Rotherhithe | Warehouse conversions, Georgian terraces, new-build | SE16 covers Bermondsey and Rotherhithe entirely within the borough, making Southwark the determining authority throughout it. |
| SE17 | Walworth | Post-war estates, new-build towers | SE17 covers Walworth only; Southwark Council handles the scheme inside an Article 4 area. |
| SE21 | Dulwich Village | Georgian villas, Edwardian villas (Dulwich Estate) | SE21 is Dulwich Village, and the Lambeth boundary runs through it, so confirm which of the two councils takes the application before drawings are issued. |
| SE22 | East Dulwich | Victorian and Edwardian terraces | East Dulwich sits wholly inside SE22, so Southwark Council validates every scheme inside an Article 4 area submitted from an SE22 address. |
| SE24 | Herne Hill | Victorian villas, Edwardian terraces | Herne Hill is split at SE24. Either Lambeth Council or Southwark Council can determine a scheme inside an Article 4 area here, so the SE24 address is checked against both policies maps first. |
Pitch, wall construction and how far the garden runs all shift between one Southwark street and the next, and each of them caps what a design at that address can achieve.
Southwark conservation designations: there are 43 on Southwark Council’s own list, Dulwich Village, Peckham Rye, Borough among them. Designation costs a Southwark owner the permitted-development route: a scheme inside an Article 4 area then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Bermondsey Street is the Southwark designation that most often changes a scheme inside an Article 4 area design.
Southwark and Article 4: Article 4 for HMOs borough-wide; additional Article 4 for office-to-residential in Bermondsey and Elephant & Castle. A scheme inside an Article 4 area planned at a SE1 address is checked against that direction first; Southwark Council publishes the Southwark extent, and the SE1 line rarely follows the Southwark boundary you would expect.
What Southwark is built from: Georgian and Regency in Bermondsey and Borough; Victorian terraces in Camberwell and Peckham; Dulwich Estate controlled housing; riverside new-build. Dulwich Estate private planning scheme affects much of SE21 and SE22; Southwark planning for rest of borough; strong heritage context. That mix decides the scheme inside an Article 4 area route in Southwark more than the postcode does.
Sources for this Southwark scheme inside an Article 4 area page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.

Southwark's Article 4 coverage is among the widest recorded in London, with borough-wide HMO control and further directions in Bermondsey and Elephant and Castle.
| Measure | Southwark | Context |
|---|---|---|
| Article 4 areas on the register | 480 | individually mapped areas, live entries only |
| Enforcement notices issued | 70 | 17th lowest of 33; London issued 3,554 |
| Planning contravention notices | 115 | formal requests for information about a suspected breach |
| Breach of condition notices | 2 | served over the same three years |
| Temporary stop notices | 16 | served over the same three years |
Figures on this page are taken from the MHCLG district planning statistics returns, PS1 and PS2, and from the Planning Data Platform registers, for quarters 2023 Q2 through 2026 Q1. Contains public sector information licensed under the Open Government Licence v3.0.
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