Home Extension Builders in Highbury
Highbury N5 extensions turning cramped Victorian rear rooms into open, well-lit living space, with Buildaway resolving structure before design is fixed.
Your Local Home Extension
Specialists in Highbury
Looking for extension specialists in Highbury (N5)? Buildaway extends homes
throughout N5 - the Victorian terraces around Highbury Fields and Highbury Barn, the
houses off Blackstock Road, Aberdeen Park and Drayton Park, and the streets near
Highbury & Islington station and the Emirates Stadium.
Highbury extensions turn cramped Victorian rear rooms into open, well-lit living
space, with Buildaway resolving structure before design is fixed. In N5 that means
the steel scheme, the party-wall position and how far the plan can open before the
house above needs propping. Buildaway's Highbury extension team engineers it
properly, serves the notices, then delivers groundwork, structure, glazing and
finish on one clearly priced contract.
Our Home Extension Packages in Highbury
Single-Storey Rear Extension
Ideal for expanding your living space. Includes structural survey, architectural drawings, groundworks and foundations, brickwork and roofing, bi-fold or sliding doors, heating installation, building regulation approval.
Side Return Extension (Most Popular)
Complete kitchen and living area transformation. Includes structural assessment, full groundworks, steelwork if required, brickwork and matching materials, glazing and doors, full insulation, electrics upgrade, flooring, building regulation approval, waste removal.
Double-Storey Extension
For those seeking maximum space addition. Includes architectural design, full structural alterations, steelwork and foundations, bespoke staircase, multiple room creation, bathroom or en-suite option, planning and building regulation handling.
Why Highbury Homeowners Choose Buildaway
Local teams with expert knowledge of N5, Islington, and surrounding North London areas
Based in your area with local expertise and reputation.
Tailored extension designs for Georgian townhomes, converted flats, and contemporary properties
We handle everything so you don't have to worry.
Transparent and honest pricing with no hidden fees or unexpected charges.
Clear upfront pricing with no surprises along the way.
Hassle-free project management from start to finish
Meticulous craftsmanship in every aspect of your extension.
Successful projects completed near Highbury Fields, Highbury Barn, and Arsenal Station
Professional consultation and detailed quotes at no cost.
What's Included in Your Home Extensions Services
Everything you need for a seamless, stress-free home extension - from structure to finish.
Full groundworks and structural build
Complete groundwork preparation and structural construction services.
Plumbing, electrics, and heating integration
Professional installation of all mechanical and electrical systems.
Roofing, windows, and external finish
Complete roofing, window installation and exterior finishing.
Plastering, flooring, and decorating
Professional plastering, flooring and decorating services.
Interior fit-out and finishing
Complete interior fit-out and professional finishing touches.
Project management and schedule control
Professional project management and timeline control throughout.
Latest Home Extension Insights
We publish detailed home extension guides and cost insights for homeowners across Highbury and surrounding areas, helping customers plan projects with clarity before starting work.
Home Extensions London: The Complete 2026 Guide
Everything from feasibility and planning to structure, cost and programme for a London extension.
Single-Storey Rear Extension Cost London
A realistic cost breakdown for the most common extension in London, with the variables that move it.
Planning Permission for Home Extensions
When you need permission, when permitted development covers you, and how to avoid a refusal.
What Our Clients Say
Real reviews from our satisfied customers.
“From scoping to completion, Cormac was always very responsive, answering any questions we had on product selection and helped us source the products to get the best price. His team worked extremely hard and a big shoutout to Greg for his attention to detail! We couldn’t be happier with the results and would highly recommend Buildaway for any building project in the future…”
Georgina Ehmcke
“I am extremely impressed, happy and proud of what he and his team of Archie, Ben and Danny delivered. They all went beyond and far, I am very grateful for what they have done for me. I would 100% recommend Buildaway for any building, renovation etc - an excellent team with a good rapport, team spirit and working harmoniously together. Thank you Team Buildaway…”
Betty Lwanga
“We’ve had a genuinely fantastic experience with Buildaway. Cormac was ultra responsive and excellent at communicating with us throughout our project. The quality of the work was excellent - so much so, that we extended our project by adding a range of other building renovations to our original ask, each completed with care and precision…”
Kiran Collier
“The quality of the work, their high standards, and their professionalism, along with effective and proactive communication made a refreshing change from the builders I have used in the past. Even when we changed our minds and ideas during the job Cormac’s patience and support emphasised that he wanted to make sure that the finished product was exactly what we wanted…”
Michael Marks
“The team turned up when they said they would and kept the house tidy each day, which made a big difference while we were living in the property during the works. The quality of the finish is excellent. The bathroom looks fantastic and the bedrooms feel completely refreshed. We wouldn’t hesitate to recommend Cormac and the Buildaway team…”
Helen Sivyer
“A great transformation of my bathroom into something modern and sleek. Cormac was professional to work with from the start and was very helpful in taking my ideas and sourcing products to fit the space and look aesthetically pleasing. I felt confident in working with the company as I could ask questions and I was also pleased to get suggestions and ideas…”
Vera Jajechnyk
Frequently Asked Questions
Your questions about home extensions in Highbury, answered.
How much does a home extension cost in Highbury?
Extension costs in Highbury are driven by groundwork, structure and glazing more than floor area alone. Across N5, expect about £40,000–£60,000 for a single-storey rear, £60,000–£80,000 for wrap-around, £100,000+ for double-storey. Buildaway itemises groundwork, steels, services and finishes separately so the trade-offs are visible.
How long does a home extension take in Highbury?
Most Buildaway extensions around Highbury Fields and Highbury Barn take 12–20 weeks once on site - groundwork, structure, envelope, then services and finishes. Weather affects the early stages more than the late ones. We give Highbury clients a dated programme with the quote, including the consent lead-in.
Do I need planning permission for an extension in Highbury?
It depends on your N5 property. Permitted development covers a good number of Highbury rear extensions, but if you are listed, in a conservation area, or leasehold, the answer changes and Islington Council consent is needed. Buildaway confirms what is achievable at feasibility rather than designing something that gets refused.
What types of extension do you offer in Highbury?
Buildaway builds rear, side-return, wrap-around, double-storey and lower-ground extensions across Highbury. Which suits your N5 home depends on the plot, the boundary and what Islington Council will accept. Around Highbury Fields and Highbury Barn the side-return infill is often the highest-value option. Buildaway surveys before recommending.
Do Buildaway handle both design and construction for Highbury extensions?
Yes. Buildaway takes Highbury extensions from feasibility and design through Islington Council application, party-wall notices, Building Control, groundwork, structure and finish. One contract across every N5 project, so the design intent and the build are the same team's responsibility.
Are your extension specialists local to Highbury?
We are in Highbury constantly. Buildaway knows N5 property: the boundaries, the ground conditions, and how Islington Council treats rear additions here. That experience makes our feasibility advice reliable rather than optimistic.
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We Serve Highbury and Surrounding Areas
Find us in the heart of Highbury. We are proud to serve our local community.
Nearby Areas We Serve
Below are some of the local areas where you can find Buildaway transforming homes.
Ready to Transform Your Extension in Highbury?
Buildaway provides Highbury residents with premium extensions, combining expert craftsmanship, stylish finishes, and long-lasting quality.