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. rcbGroup delivers extensions, loft conversions, and refurbishments across N1 and EC1V.
rcbGroup projectHouse 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 extension approach works best — we'll advise from the first call.
Common extension projects we deliver in Islington
How we deliver extension projects in Islington
Project review & site visit
We look at your Islington 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 Islington 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 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 rcbGroup in Islington?
Local context
We plan around London Borough of Islington's requirements and the typical property types in Islington — georgian and victorian terraced houses, period conversions, warehouse and industrial conversions, new-build apartments.
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 Islington?
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 Islington
Postcodes served: Islington
Not sure if we cover your street? Get in touch — we'll confirm in minutes.
Start your Islington project
Project review. Clear scope. Agreed price. One team from first call to Building Control sign-off.
Or call us on +44 7359 872594