House Extensions in Islington
Islington is one of central North London's most sought-after neighbourhoods — Georgian and Victorian architecture, proximity to the City and West End, and one of London's densest concentrations of conservation areas. Renovation ambitions run high. RCB Design & Build delivers extensions, loft conversions, and refurbishments across N1 and EC1V.
House Extensions in Islington — what to expect
Islington's Georgian and Victorian terraces typically have more constrained rear gardens than outer London equivalents, but extension potential exists on most properties. Ground floor rear extensions at 3-5m are common. Side return extensions are popular on end-of-terrace properties in the area's residential streets. Conservation areas cover a large proportion of Islington — almost all external works require careful pre-application discussion with the planning team.
Islington property types
Georgian and Victorian terraced houses, period conversions, warehouse and industrial conversions, new-build apartments. The property type affects which extensions approach works best — we'll advise from the first call.
Common extensions projects we deliver in Islington
How we deliver extensions in Islington
Free consultation & survey
We visit your Islington 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 Islington 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 Islington
Islington has one of the highest proportions of designated conservation areas of any London borough — covering the majority of its residential streets. The council's supplementary planning documents set detailed requirements for extensions, roof alterations, and facade changes within conservation areas. Pre-application advice from Islington's planning team is strongly recommended before committing to design or costs.
Why choose RCB Design & Build in Islington?
Local knowledge
We work in Islington 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 Islington
Start your Islington project
Free consultation. Fixed price. 25-year warranty. One team from first call to final sign-off.
Or call us on 07359 872594