House extension services in Islington

House Extension Services in Islington

Professional House Extension Solutions for Islington Residents

Free Site Visit
Fast Turnaround
Local Islington Expertise
High Planning Approval Rate

Professional House Extensions in Islington

Transform your Islington home with our professional house extension services. Our qualified architects combine local knowledge with innovative design to create extensions that perfectly complement your existing property while maximizing space and value. Whether you're planning a rear extension, side extension, or loft conversion, our Islington team delivers exceptional results that exceed expectations.

House extension project near Islington

A recent extension project in the Islington area

Local Expertise

Our Islington expertise is built on years of successful project delivery across the Enfield catchment area. We understand the local context, from conservation considerations to development opportunities, helping you make informed decisions about your house extension project. Our established relationships with local authorities and contractors ensure smooth project progression from initial design through to completion.

Planning & Regulations

Our Islington team ensures your house extension project complies with all current planning policies and building regulations. We understand Enfield Council's specific requirements and can advise on the most appropriate approach for your project. From permitted development rights to full planning applications, we provide comprehensive support to ensure regulatory compliance while maximizing your development potential.

Property Types We Work With in Islington

Islington has a diverse housing stock and we have experience extending all property types in the area. Our architects adapt designs to suit the character and structure of each home, whether that means matching original brickwork on a period property or creating a contemporary contrast on a more modern home.

Victorian terraces
Edwardian semis
post-war council houses
1930s semis
modern townhouses
period conversions

Free Quote for Islington

Tell us about your project and get expert advice within 24 hours.

Get a Free QuoteCall 020 3051 9430

Mon–Fri: 9am–5pm

Free site visit & consultation

No obligation quote

Covering N1 & surrounding postcodes

House Extension Costs in Islington (2026)

Guide prices for house extensions in the Islington area. Every project is different — we provide a detailed, itemised quote after a free site visit.

Extension TypeTypical Cost
Single Storey Rear Extension£35k – £70k
Double Storey Extension£55k – £120k
Side Return Extension£25k – £50k
Wrap-Around Extension£60k – £130k
Loft Conversion (Dormer)£40k – £65k
Kitchen Extension£30k – £60k
Basement Conversion£80k – £200k
Garage Conversion£15k – £30k

Prices are guide figures for 2026 based on projects in the Greater London area. PD = Permitted Development (no formal planning application needed in most cases). Actual costs depend on specification, site conditions, and scope.

Our Extension Services in Islington

How Your Islington Extension Project Works

From the first phone call to moving into your new space — here is what to expect at every stage.

Step 1

Free Consultation

We visit your Islington property, discuss your vision, assess feasibility, and give you honest guidance on costs and planning routes.

Step 2

Design & Drawings

Our architects create detailed plans, 3D visuals, and construction drawings tailored to your Islington home and how you want to live in it.

Step 3

Planning & Approvals

We prepare and submit your planning application, liaise with the local authority covering Islington, and handle building regulations documentation.

Step 4

Construction

Our vetted builders bring the design to life. We oversee the build, conduct regular site visits, and manage quality at every stage.

Step 5

Completion & Sign-Off

Final inspections, building control sign-off, snagging checks, and handover — your new Islington space is ready to enjoy.

House Extension Services

For residential projects in Islington, we offer comprehensive extension services including house extensions, loft conversions, garage conversions, and wrap-around extensions. Our designs maximize space and value while respecting the local built environment. We use the latest CAD software and 3D visualization techniques to help you visualize your project before construction begins.

Planning Permission

Whether your Islington project requires planning permission or falls under permitted development rights, our team provides expert guidance and support. We understand Enfield Council's specific requirements and can advise on the most appropriate approach for your extension project. Our comprehensive planning services ensure your project progresses smoothly through the approval process.

Completed house extension in Islington area

Extension completed in the Islington area

Building Control

For Islington projects, we provide ongoing support throughout the construction process, including site inspections, compliance monitoring, and liaison with building control officers. Our drawings are produced to building control standards, ensuring clear communication of construction details and compliance requirements. Our goal is to ensure your project meets all building regulations while maintaining design quality.

Why Choose Us in Islington

Our Islington clients benefit from our extensive local knowledge, established relationships with planning authorities and contractors, and commitment to delivering exceptional results. We take pride in our ability to transform client visions into reality while respecting local character and meeting regulatory requirements. We offer competitive rates, transparent pricing, and flexible service packages tailored to your specific needs.

Frequently Asked Questions About House Extensions in Islington

How much does a house extension cost in Islington?+
House extension costs in Islington vary by type and size. Single storey rear extensions typically range from £35k – £70k, double storey extensions from £55k – £120k, and loft conversions from £40k – £65k. These are guide prices for 2026 — we provide an accurate, itemised quote after a free site visit to your Islington property.
Do I need planning permission for a house extension in Islington?+
Many extensions in Islington can be built under permitted development rights without a formal planning application. This typically covers single storey rear extensions up to certain size limits. However, if your property is in a conservation area, is a listed building, or if the extension exceeds permitted development limits, a full planning application is needed. During our free consultation we assess your Islington property and advise on the best route — and handle the entire application if needed.
What types of house extensions can you build in Islington?+
We design and build all types of extensions in Islington: single storey rear extensions, double storey extensions, side return extensions, wrap-around extensions, loft conversions (dormer, hip-to-gable, mansard), garage conversions, basement conversions, and kitchen extensions. Islington has a mix of Victorian terraces, Edwardian semis, post-war council houses — we tailor every design to the specific property type.
How long does a house extension take in Islington?+
Timelines vary by project: a single storey extension typically takes 3–4 months on site, a double storey 5–7 months, and a loft conversion 6–8 weeks. Before construction, the design and planning stage usually takes 8–12 weeks. We map out a detailed programme during your free consultation so you know exactly what to expect.
Do you handle planning applications with Islington council?+
Yes — we have extensive experience submitting planning applications to the local authority covering Islington. We prepare all drawings, design & access statements, and supporting documents, then manage communication with planning officers through to decision. Our knowledge of local policies helps avoid unnecessary delays or objections.
What areas near Islington do you cover?+
We cover Islington and all surrounding areas within a 20-mile radius. This means we can handle projects across the wider Islington area, with the same level of local knowledge and expertise you'd get from a firm based in Islington itself.

Ready to Start Your Islington Extension?

Don't delay your Islington extension project - get in touch today to discuss your requirements and receive expert advice on the best approach for your house extension. Our team is ready to help you bring your vision to life with professional design solutions and local expertise. We provide comprehensive support from initial concept through to project completion.

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