House Extensions in Southwark
Southwark spans from Borough and Bermondsey to Camberwell and Walworth. Property values are high across much of the borough and renovation activity is strong across SE5, SE15, SE16 and SE17.
rcbGroup projectHouse Extensions in Southwark — what to expect
Southwark extension work concentrates on the Victorian terrace stock in SE5 (Camberwell) and SE17 (Walworth). Rear extensions of 3–5m are the most common type. Conservation areas in Camberwell and parts of Bermondsey restrict permitted development in many streets.
Southwark property types
Victorian terraces in Camberwell and Walworth, Georgian properties near Borough, post-war council estates. The property type affects which extension approach works best — we'll advise from the first call.
Common extension projects we deliver in Southwark
How we deliver extension projects in Southwark
Project review & site visit
We look at your Southwark property and any drawings you have, explain what's possible, the likely planning and Building Regulations route, and the risks — before you commit to anything. No obligation.
Design & planning support
We work alongside your architect or our preferred design partners to develop drawings that are buildable, compliant, and cost-effective. We flag planning and permitted development options early.
Itemised scope and price
You receive a detailed, itemised scope of works and an agreed price before we start, with exclusions and provisional sums shown. Variations are agreed in writing before any additional work begins.
Managed delivery
We coordinate trades, procurement and site logistics, with a single point of contact throughout — working to the requirements of London Borough of Southwark and Building Control.
Sign-off & handover
We coordinate the Building Control inspections needed for sign-off, then hand over your project documents — completion certificate, guarantees and manuals as applicable — with snagging and aftercare as set out in your contract.
Planning in Southwark
Southwark has conservation areas in Camberwell, Bermondsey, Dulwich and parts of SE1. Permitted development is restricted in many residential streets. Verify with LBS Planning before any extension or conversion work.
Why choose rcbGroup in Southwark?
Local context
We plan around London Borough of Southwark's requirements and the typical property types in Southwark — victorian terraces in camberwell and walworth, georgian properties near borough, post-war council estates.
Price agreed before start
Your price is agreed and documented before work starts. Scope, exclusions, and assumptions set out in writing.
One accountable team
Trades, suppliers and inspections coordinated by one team — with CDM Principal Contractor duties taken on where we are appointed to build.
Written project documentation
A written contract before work starts, a Construction Phase Plan where we are appointed to build, and the completion certificate and handover documents gathered for you at the end.
Independently reviewed
Rated 10/10 from 117+ reviews on Checkatrade, where you can read them for yourself.
Support from planning to aftercare
We don't just build — we can support design development, planning applications, and pre-construction cost planning.
Planning an extension in Southwark?
Pick whatever suits you. We'll look at what you have (drawings, photos or quotes) and tell you honestly what the next step should be.
Prefer to phone? Call +44 7359 872594.
Other services in Southwark
Postcodes served: Southwark
Not sure if we cover your street? Get in touch — we'll confirm in minutes.
Start your Southwark project
Project review. Clear scope. Agreed price. One team from first call to Building Control sign-off.
Or call us on +44 7359 872594