Kitchen extension in Southwark

Which postcode districts around Southwark do we cover for kitchen extension work?

Every Southwark postcode district we draw in, the stock that dominates it and the authority that validates a kitchen extension there. Southwark fees below are the statutory England rates for 2026, not kitchen extension estimates.

What changes about a kitchen extension in each part of Southwark?

Roof pitch, wall build-up and plot depth change every few Southwark streets, and each one changes what a kitchen extension can achieve at that address.

• Bermondsey (SE1, SE16) — a kitchen extension in Bermondsey starts from warehouse conversions, georgian terraces, new-build, and Bermondsey reads as warehouse conversions, Georgian fragments. Georgian rear elevations here are usually the listed or locally listed face of the building in SE1. Southwark Council assesses Bermondsey kitchen extensions against its own Bermondsey character guidance, and the location plan we draw for Bermondsey references Bermondsey Street.
• Borough (SE1) — a kitchen extension in Borough starts from georgian and victorian terraces, warehouse conversions, and Borough reads as Georgian and Victorian terraces, market quarter. Georgian rear elevations here are usually the listed or locally listed face of the building in SE1. Southwark Council assesses Borough kitchen extensions against its own Borough character guidance, and the location plan we draw for Borough references Borough Market.
• Camberwell (SE5) — Georgian villas, Victorian terraces defines Camberwell, where georgian villas, victorian terraces set what a kitchen extension can do. Georgian rear elevations here are usually the listed or locally listed face of the building across SE5. Any Camberwell kitchen extension is validated by Southwark Council, with Camberwell Green the usual Camberwell reference point on the site plan.
• Peckham (SE15) — Victorian terraces, creative renewal defines Peckham, where victorian terraces, post-war estates set what a kitchen extension can do. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage across SE15. Any Peckham kitchen extension is validated by Southwark Council, with Peckham Rye the usual Peckham reference point on the site plan.
• Dulwich Village (SE21) — Georgian and Edwardian villas, Estate-managed defines Dulwich Village, where georgian villas, edwardian villas (dulwich estate) set what a kitchen extension can do. Georgian rear elevations here are usually the listed or locally listed face of the building across SE21. Any Dulwich Village kitchen extension is validated by Southwark Council, with Dulwich Picture Gallery the usual Dulwich Village reference point on the site plan.
• East Dulwich (SE22) — a kitchen extension in East Dulwich starts from victorian and edwardian terraces, and East Dulwich reads as Victorian and Edwardian terraces. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage in SE22. Southwark Council assesses East Dulwich kitchen extensions against its own East Dulwich character guidance, and the location plan we draw for East Dulwich references Lordship Lane.
• Rotherhithe (SE16) — a kitchen extension in Rotherhithe starts from warehouse conversions, post-war estates, new-build, and Rotherhithe reads as warehouse conversions, riverside. Post-war houses on these estates often sit under an estate management scheme in SE16. Southwark Council assesses Rotherhithe kitchen extensions against its own Rotherhithe character guidance, and the location plan we draw for Rotherhithe references Surrey Quays.

How do conservation areas and Article 4 affect a kitchen extension in Southwark?

Southwark conservation designations: there are 43 across Southwark Council, Bermondsey Street, Dulwich Village, Peckham Rye among them. Designation costs a Southwark owner the permitted-development route: a kitchen extension then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Dulwich Village is the Southwark designation that most often changes a kitchen extension design.

What Article 4 removes near Southwark: Article 4 for HMOs borough-wide; additional Article 4 for office-to-residential in Bermondsey and Elephant & Castle. Before pricing a kitchen extension we check whether the SE1 address is inside the mapped area, because Southwark Council draws the Southwark boundary street by street rather than across the whole of Southwark.

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 kitchen extension route in Southwark more than the postcode does.

What happens if a Southwark property sits on a boundary?

• Lewisham — adjoining Southwark, with 30 conservation areas centred on SE3. A kitchen extension on the far side of the Southwark line is determined by Lewisham Council, so the Southwark quote for kitchen extensions is checked against Lewisham guidance before it is issued.
• Bromley — the Bromley boundary runs against Southwark, so a kitchen extension a street from Southwark is decided by Bromley Council instead. Bromley runs 48 conservation areas across BR1 and its neighbours, which is why kitchen extensions priced for Southwark are re-checked against Bromley policy whenever the Southwark address sits on that edge.
• Tower Hamlets — adjoining Southwark, with 58 conservation areas centred on E1. A kitchen extension on the far side of the Southwark line is determined by Tower Hamlets Council, so the Southwark quote for kitchen extensions is checked against Tower Hamlets guidance before it is issued.
• City of London — adjoining Southwark, with 27 conservation areas centred on EC1. A kitchen extension on the far side of the Southwark line is determined by City of London Corporation, so the Southwark quote for kitchen extensions is checked against City of London guidance before it is issued.

Sources for this Southwark kitchen extension 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.