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Property guide · Southwark

1930s semi-detached extensions in Southwark

Bay-fronted suburban semis with hipped roofs and side passages. Dominant outer-London stock.

Quick facts

Property type
1930s semi-detached
Borough
Southwark
Planning authority
Southwark Council
Article 4 in force
Yes
Conservation areas
43
Drawings from
£840

1930s semi-detached stock in Southwark responds best to extensions that respect the existing rhythm. For Victorian and Edwardian period property, side returns and rear infill are routine. For 1930s suburban, single-storey rear and loft conversions dominate. We design to the block, not the brochure.

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Which postcode districts around Southwark do we cover for 1930s semi project work?

Every Southwark postcode district we draw in, the stock that dominates it and the authority that validates a 1930s semi project there. Southwark fees below are the statutory England rates for 2026, not 1930s semi project estimates.

PostcodeAreaDominant stockWhat it means for a 1930s semi project
SE1Bermondsey / Borough / WaterlooGeorgian terraces, post-war flats, new-buildSE1 straddles a boundary: Bermondsey / Borough / Waterloo addresses fall to Southwark Council or Lambeth Council, so confirm which authority validates the 1930s semi project before submitting SE1 drawings.
SE5CamberwellGeorgian villas, Victorian terracesA 1930s semi project in Camberwell may land with Southwark Council or Lambeth Council — SE5 crosses the boundary, and the SE5 policies map decides it street by street.
SE15Peckham / NunheadVictorian terraces, post-war estatesA 1930s semi project at an SE15 address in Peckham / Nunhead is determined by Southwark Council under its own Local Plan policies for Peckham / Nunhead.
SE16Bermondsey / RotherhitheWarehouse conversions, Georgian terraces, new-buildSE16 covers Bermondsey / Rotherhithe only; Southwark Council handles the 1930s semi project, and Bermondsey / Rotherhithe case officers apply the SE16 conservation-area map.
SE17WalworthPost-war estates, new-build towersA 1930s semi project at an SE17 address in Walworth is determined by Southwark Council under its own Local Plan policies for Walworth.
SE21Dulwich VillageGeorgian villas, Edwardian villas (Dulwich Estate)A 1930s semi project in Dulwich Village may land with Southwark Council or Lambeth Council — SE21 crosses the boundary, and the SE21 policies map decides it street by street.
SE22East DulwichVictorian and Edwardian terracesEast Dulwich sits wholly inside SE22, so Southwark Council validates every 1930s semi project submitted from an SE22 address.
SE24Herne HillVictorian villas, Edwardian terracesA 1930s semi project in Herne Hill may land with Lambeth Council or Southwark Council — SE24 crosses the boundary, and the SE24 policies map decides it street by street.

How does a 1930s semi project differ street by street across Southwark?

Roof pitch, wall build-up and plot depth change every few Southwark streets, and each one changes what a 1930s semi project can achieve at that address.

How do conservation areas and Article 4 affect a 1930s semi project in Southwark?

How designation changes a Southwark 1930s semi project: Southwark Council maintains 43 conservation areas, including Dulwich Village, Peckham Rye, Borough. Inside any of them a Southwark 1930s semi project cannot rely on permitted development, and the route becomes a £258 householder application determined in 8 weeks rather than a £120 prior approval in 6 weeks. Camberwell Grove sets the tone for Southwark casework.

Article 4 and your Southwark 1930s semi project: Article 4 for HMOs borough-wide; additional Article 4 for office-to-residential in Bermondsey and Elephant & Castle. At a SE1 address that matters twice over, because Southwark Council applies the direction unevenly across Southwark — we read the Southwark policies map for the exact SE1 address before quoting 1930s semi projects.

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 1930s semi project route in Southwark more than the postcode does. Our fixed fee for 1930s semi projects in Southwark starts at £840, against £1,750 for the Complete package that carries a Southwark scheme through Southwark Council planning and building regulations together.

What happens if a Southwark property sits on a boundary?

Sources for this Southwark 1930s semi project 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.

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