Extension Builder in Islington
1039 vetted extension builders covering Islington. Post your job free and compare responses directly - no obligation.
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Building and renovation work in Islington
Islington, part of the London Borough of Islington, is known for Georgian and Victorian squares and terraces around Canonbury and Barnsbury, converted warehouses near Clerkenwell, and the busy streets around Upper Street. Its proximity to Upper Street and Camden Passage and good transport links via Angel and Highbury & Islington stations, and the Victoria and Northern lines continue to make it a popular place for homeowners to invest in renovation and extension projects rather than move - keeping steady demand for reliable, quality extension building work in the area.
With the Canonbury, Barnsbury and Highbury Fields conservation areas - 42 in total, covering roughly half the borough covering parts of Islington, planning and conservation requirements are a real factor in extension building work here - work that would be straightforward elsewhere can need extra care, matching materials, or formal planning consent locally. Homeowners in Islington increasingly look for tradespeople who understand that local context, rather than a generic, one-size-fits-all quote.
Optimal Transformations
Builder, Plasterer, Painter & Decorator, Tiler, Extension Builder
EC1V 2NX
Get in touchUnited For Change London
Builder, Plumber, Plasterer, Extension Builder, Gas Engineer, Groundworker
EC1V 2NX
Get in touchPalm Interior Fit Out & Construction
Builder, Plasterer, Painter & Decorator, Extension Builder
N5 2ER
Get in touchPortman Maintenance
Builder, Plumber, Plasterer, Extension Builder, Gas Engineer, Groundworker
EC1V 2NX
Get in touchZay&Hanbuildmyhome
Builder, Electrician, Plumber, Extension Builder, Gas Engineer, Groundworker
EC1V 2NX
Get in touchSpeeem Energy & Engineering
Builder, Electrician, Plumber, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchCorebuilt Solutions
Builder, Electrician, Plumber, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchIn Construction
Builder, Electrician, Plumber, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchUknservices
Builder, Electrician, Plumber, Plasterer, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchBright Painters And Decorators
Builder, Electrician, Plasterer, Painter & Decorator, Extension Builder
EC1V 2NX
Get in touchRee Fix
Builder, Plumber, Carpenter, Painter & Decorator, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchChester Property Maintenance
Builder, Plumber, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchKjp Builders Uk
Builder, Plumber, Painter & Decorator, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchDmr Technical Services
Builder, Plumber, Painter & Decorator, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchPlum Tree Home Improvement
Builder, Roofer, Extension Builder, Window & Door Installer
EC1V 2NX
Get in touchTopline Contractors
Builder, Plasterer, Painter & Decorator, Extension Builder
EC1V 2NX
Get in touchPotok Builders
Builder, Plasterer, Painter & Decorator, Tiler, Extension Builder
EC1V 2NX
Get in touchBuilders M&A
Builder, Plasterer, Painter & Decorator, Tiler, Extension Builder
EC1V 2NX
Get in touchTopscore Constructions Group
Builder, Plasterer, Painter & Decorator, Extension Builder
EC1V 2NX
Get in touchLothbrok Carpentry And Construction
Builder, Roofer, Carpenter, Extension Builder
EC1V 2NX
Get in touchArthur Building Solutions
Builder, Painter & Decorator, Tiler, Extension Builder
N7 9RP
Get in touchLin's Construction & Renovation
Builder, Plumber, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchCt Building And Plastering Services
Builder, Plasterer, Carpenter, Extension Builder
EC1V 2NX
Get in touchHxa Contractors
Builder, Electrician, Plumber, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchRal Engineering And Consultancy
Builder, Electrician, Plumber, Extension Builder, Gas Engineer
N16 9BS
Get in touchIs Construction And Maintenance Services
Builder, Extension Builder, Groundworker
EC1V 2NX
Get in touchArtius Designs Construction
Builder, Electrician, Plumber, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchGloster Sw Revenio
Builder, Electrician, Plumber, Extension Builder, Gas Engineer
EC1Y 1AA
Get in touchUk Property Maintenance Servicés
Builder, Plumber, Painter & Decorator, Tiler, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchWishpropertyservices
Builder, Electrician, Plumber, Painter & Decorator, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchGriffith Construction
Builder, Electrician, Plumber, Carpenter, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchKiwibuildingandpropertyservices
Builder, Painter & Decorator, Extension Builder
EC1V 2NX
Get in touchD H Pinkney Building & Roofing Services
Builder, Roofer, Plasterer, Extension Builder
EC1V 2NX
Get in touchRevive Refurbishments & Maintenance
Builder, Carpenter, Tiler, Extension Builder
EC1V 2NX
Get in touchHigh End Interior Decoration Uk
Builder, Plumber, Painter & Decorator, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchPremier Property Painters
Builder, Painter & Decorator, Tiler, Extension Builder
EC1V 2NX
Get in touchHandcrafted Garden Spaces Uk
Builder, Carpenter, Extension Builder, Groundworker
EC1V 2NX
Get in touchCity Building & Design
Builder, Electrician, Plumber, Extension Builder, Gas Engineer
EC1V 2NX
Get in touchConstruction Of A Dream
Builder, Plumber, Roofer, Extension Builder, Gas Engineer, Groundworker
EC1V 2NX
Get in touchWhat to expect from a extension builder in Islington
Extensions typically need either planning permission or a Lawful Development Certificate confirming permitted development rights, plus building control approval throughout.
As with any trade, it's worth asking to see proof of insurance and relevant qualifications before work starts, checking recent examples of similar jobs, and getting the scope of work agreed in writing - see our guide on questions to ask before hiring below.
Typical project costs in Islington
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Hiring safely in Islington
A few things worth checking before you agree to any quote:
Frequently asked questions
How much does a extension builder cost in Islington?
A single-storey extension typically costs from around £1,800 per m² for a standard finish, before architect fees, planning application fees, and building control sign-off - which usually add another £3,000-£8,000. Get a ballpark for your own project with our free extension cost calculator.
How do I know a extension builder in Islington is trustworthy?
Every builder on builderfinder.uk is manually checked before their profile goes live - we match their photo ID to their face, verify their UK proof of address, and check their trades and insurance. You can also see their reviews and completed jobs on their profile, and look for the Verified badge, or a Companies House Verified badge if they're a limited company.
Do I need planning permission for extension building work in Islington?
It depends on the specific job, but it's a real question to ask locally: the Canonbury, Barnsbury and Highbury Fields conservation areas - 42 in total, covering roughly half the borough cover parts of Islington, and work that would be permitted development elsewhere can need formal planning consent here, or need to match existing materials and style. Always check with the London Borough of Islington's planning department, or ask your builder to confirm before work starts.
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