House extension services in Hornsey

House Extension Services in Hornsey

Professional House Extension Solutions for Hornsey Residents

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

Professional House Extensions in Hornsey

Transform your Hornsey 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 Hornsey team delivers exceptional results that exceed expectations.

House extension project near Hornsey

A recent extension project in the Haringey area

Local Expertise

Our Hornsey 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

Navigating planning requirements in Hornsey requires local expertise and up-to-date knowledge of Enfield Council's policies. Our architects understand the specific requirements for extensions in the area and can guide you through the planning application process, ensuring your proposal has the best chance of approval. We provide advice on design considerations, sustainability requirements, and community consultation processes.

Property Types We Work With in Hornsey

Hornsey 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 Hornsey

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 N8 & surrounding postcodes

House Extension Costs in Hornsey (2026)

Guide prices for house extensions in the Haringey 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 Hornsey

How Your Hornsey 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 Hornsey 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 Hornsey 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 Hornsey, 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 Hornsey space is ready to enjoy.

House Extension Services

Specializing in residential extensions across Hornsey, we provide tailored design solutions for every type of project. Our services include architectural design, planning applications, building regulations compliance, and construction drawings. We work closely with homeowners to create extensions that enhance their living space while maintaining the character and value of their property.

Planning Permission

Planning permission applications in Hornsey require careful preparation and local knowledge. Our team has successfully submitted numerous planning applications across the Enfield area, achieving high approval rates through thorough preparation and understanding of local planning policies. We handle all aspects of the planning process, from initial feasibility studies to final approval.

Completed house extension in Hornsey area

Extension completed in the Haringey area

Building Control

For Hornsey 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 Hornsey

With years of experience working across the Enfield area, our Hornsey team combines creative design skills with practical project management, ensuring your project is delivered on time and within budget. We understand the unique challenges and opportunities presented by extensions in the area and can provide expert advice on the most appropriate design approach for your specific requirements.

Frequently Asked Questions About House Extensions in Hornsey

How much does a house extension cost in Hornsey?+
House extension costs in Hornsey 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 Hornsey property.
Do I need planning permission for a house extension in Hornsey?+
Many extensions in Hornsey 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 Hornsey property and advise on the best route — and handle the entire application if needed.
What types of house extensions can you build in Hornsey?+
We design and build all types of extensions in Hornsey: 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. Hornsey 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 Hornsey?+
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 Hornsey council?+
Yes — we have extensive experience submitting planning applications to the local authority covering Hornsey. 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 Hornsey do you cover?+
We cover Hornsey and all surrounding areas within a 20-mile radius. This means we can handle projects across the wider Haringey area, with the same level of local knowledge and expertise you'd get from a firm based in Hornsey itself.

Ready to Start Your Hornsey Extension?

Ready to start your house extension project in Hornsey? Contact our expert team today for a free consultation and detailed project assessment. We offer competitive rates, professional service, and local expertise that ensures your project's success. Our Hornsey extension services are designed to meet your specific needs, whether you're planning a rear extension, loft conversion, or complete home transformation.

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