House Extensions in Kennington
Kennington in SE11 sits immediately south of the River Thames — close to Vauxhall, Oval, and Elephant and Castle. Its Georgian and Victorian architecture, proximity to central London, and improving amenity have driven strong renovation activity. RCB Design & Build delivers extensions, loft conversions, and refurbishments across SE11 and the adjoining SE17.
House Extensions in Kennington — what to expect
Kennington's Georgian and Victorian terraced houses offer rear extension potential within typically constrained rear gardens. Ground floor rear extensions at 3-4m are the most common type, creating open-plan space from the historically segmented ground floor plan. Side return extensions suit end-of-terrace properties. Conservation areas are widespread in SE11 — many streets are in the Kennington Park, Cleaver Square, or Cardigan Street conservation areas, requiring careful planning consideration.
Kennington property types
Georgian and Victorian terraced houses, mansion blocks, period conversions, modern apartments. The property type affects which extensions approach works best — we'll advise from the first call.
Common extensions projects we deliver in Kennington
How we deliver extensions in Kennington
Free consultation & survey
We visit your Kennington property, assess what's possible, and give you a fixed-price indication 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.
Fixed-price contract
You receive a detailed, itemised scope of works and a fixed price before we start. No surprises mid-project. Variations are agreed in writing before any additional work begins.
Managed delivery
We manage all trades, procurement, and site logistics. You have a single point of contact throughout. Our site teams are familiar with Kennington and the local planning and building control requirements.
Sign-off & warranty
We complete to building regulations standard and obtain all relevant sign-off. Your structural warranty covers up to 25 years.
Planning in Kennington
Kennington has a high density of conservation areas administered by both Lambeth and Southwark depending on the specific street. Pre-application advice from the relevant planning authority is recommended for any external works. Both councils publish supplementary design guidance for residential extensions in their conservation areas. Check your borough and conservation area status before proceeding.
Why choose RCB Design & Build in Kennington?
Local knowledge
We work in Kennington regularly. We know the planning authority, local building control, and the typical property types and challenges in this area.
Fixed-price guarantee
Your price is fixed before work starts. We absorb material and labour cost movements — not you.
Full principal contractor service
We manage every trade, every supplier, every inspection. You deal with one team from start to finish.
25-year structural warranty
All structural work is covered under our long-term warranty. Proof of quality, in writing.
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Design-and-build capability
We don't just build — we can support design development, planning applications, and pre-construction cost planning.
Other services in Kennington
Start your Kennington project
Free consultation. Fixed price. 25-year warranty. One team from first call to final sign-off.
Or call us on 07359 872594