House Extensions in Bermondsey
Bermondsey and Borough — the SE1 and SE16 postcodes stretching from London Bridge to Bermondsey Street and out to South Bermondsey — represent one of inner South London's most diverse property markets. RCB Design & Build delivers extensions, loft conversions, and full refurbishments across this area, working with both owner-occupiers and investors.
House Extensions in Bermondsey — what to expect
Ground floor rear extensions on Bermondsey's Victorian cottage and terrace stock can transform a compact footprint into a well-proportioned family home. Most properties on the residential streets away from the main roads have scope for rear extensions under permitted development. We also deliver structural opening work and kitchen reconfiguration as part of extension projects.
Bermondsey property types
Victorian terraces and cottages, converted warehouse and industrial buildings, modern flats, Georgian townhouses. The property type affects which extensions approach works best — we'll advise from the first call.
Common extensions projects we deliver in Bermondsey
How we deliver extensions in Bermondsey
Free consultation & survey
We visit your Bermondsey 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 Bermondsey 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 Bermondsey
Bermondsey falls under Southwark Council. Conservation areas in Borough and the Bermondsey Street area carry additional controls. The Old Bermondsey, Grange Road, and Bricklayers Arms conservation areas should be checked at pre-construction. Many residential streets outside these zones benefit from standard permitted development rights.
Why choose RCB Design & Build in Bermondsey?
Local knowledge
We work in Bermondsey 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 Bermondsey
Start your Bermondsey project
Free consultation. Fixed price. 25-year warranty. One team from first call to final sign-off.
Or call us on 07359 872594