Home Extension Builders in Highbury
Trusted home extension specialists serving Highbury and the wider N5 area design, planning, and build handled entirely in-house.
Your Local Home Extension
Specialists in
Highbury
Highbury is defined by its tall Victorian terraces, many arranged around Highbury Fields one of
Islington's largest open spaces and along the wide residential streets running toward Canonbury
and Finsbury Park. These houses were generally built larger than the terraces found in many
other parts of Islington, with higher ceilings and deeper plans, which gives homeowners more to
work with when planning an extension. A significant proportion of the area sits within
Islington's conservation areas, particularly the streets directly bordering Highbury Fields,
where the council pays close attention to how extensions affect the appearance of terraces seen
from the park and surrounding streets. Buildaway's team checks each property's conservation
status early, since it shapes what kind of extension is realistic.
Many of Highbury's larger houses have been converted into flats over the decades, and this
affects how extension projects are approached. Ground-floor and lower-ground flats often retain
rear garden access and can pursue rear extensions in much the same way as a single-family house
would, subject to the building's freehold arrangements. Upper-floor flats, by contrast, are
usually better suited to loft conversions, making use of the generous roof heights typical of
Highbury's Victorian stock. Buildaway works out which of these routes applies to a given
property early on, since it has a direct bearing on what design options are worth
pursuing.
For properties that remain as single houses, combining a rear extension with a loft conversion
is a common approach in Highbury extending the ground floor into the garden for a larger
kitchen-diner while adding a bedroom or bathroom in the roof space above. Running both elements
as one project means scaffolding and site setup are shared across the work, which keeps costs
down compared to doing them as separate jobs. Buildaway's architects and structural engineers
plan both elements together from the outset, working out the combined structural implications
before drawings are finalised. Whether it's a rear extension on a terrace near Highbury Fields
or a loft-and-extension combination on a property toward Aberdeen Park, Buildaway delivers home
extensions in Highbury that are properly planned and built to last.
Our Home Extension Packages in Highbury
Single-Storey Rear / Side Return
Ideal for Highbury's Victorian terraces. Includes architectural drawings, structural calculations, side return infill construction, bi-fold doors, skylights or lantern roofs, utility/heating integration, and full Building Control certification.
Loft Conversion / Roof Extension
Perfect for upper-floor flats and townhouses in N5 postcodes. Includes dormer or mansard loft layout, architectural stairs, structural steel support framework, insulation upgrades, and ensuite bathroom integration.
Combined Extension & Loft
The ultimate space solution for complete Highbury townhouses. Combines ground floor garden extension with a dormer/mansard loft addition, sharing scaffolding, site setup, and structural engineering to save significant costs.
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.
What Our Highbury Clients Say
Real reviews from our satisfied customers.
"We wanted a loft-and-extension combination done on our Victorian terrace near Highbury Fields and after meeting with several builders, I decided to go with Buildaway. From my first contact with Cormac, I was in good hands. His team turned my vision into reality, communicating with me every step of the way and handled all conservation area requirements smoothly."
Michael Harrington
Highbury Fields, N5
"It was an absolute pleasure working with Cormac and the Buildaway team on our double-storey extension in Aberdeen Park. Greg is an absolute star. Cormac’s communication and advice was excellent, and the coordination of structural calculations and party wall agreements was flawless. A truly great team."
Sarah Jenkins
Aberdeen Park, N5
"Cormac & his team were brilliant throughout our Highbury terrace extension project. From scoping to completion, Cormac was always responsive, helping us navigate planning and drainage checks for our Victorian home. His team worked extremely hard and a big shoutout to Greg for his attention to detail!"
David Lawson
Highbury Hill, N5
"We’ve had a genuinely fantastic experience with Buildaway. Cormac was ultra responsive and excellent at communicating with us throughout our townhouse refurbishment near Highbury Barn. The quality of the work on our side return extension was excellent - they even thoroughly cleaned all our rooms and touched up any marks. Friendly, reliable and competitive."
Rebecca Vance
Highbury Barn, N5
"We recently used Buildaway for a rear kitchen-diner extension at our Highbury Grange home. From start to finish the experience was smooth and well organised. Cormac was easy to deal with, communication was clear and everything ran to the agreed timelines. The extension looks fantastic and the space feels completely refreshed."
Thomas Croft
Highbury Grange, N5
"It was a pleasure working with the Buildaway team to design and build our terraced house extension off Canonbury Road. Cormac's enthusiasm and project management are top-notch. Greg's attention to detail and dedication elevated both the experience and the result. Highly recommended and will certainly work with them again."
Katherine Miller
Canonbury Road, N5
Frequently Asked Questions
Your questions about home extensions in Highbury, answered.
How much does a home extension cost in Highbury?
In Highbury N5, single-storey rear and side return extensions typically cost £48,000 to £68,000, while double-storey additions range from £85,000 to £115,000. Highbury's larger Victorian properties often mean more floor area to extend, which can push costs toward the upper end of that range. Buildaway provides a fully itemised quote after a free survey so you have a clear figure before any work begins.
Do I need planning permission for a home extension in Highbury?
Much of Highbury falls within Islington's conservation areas, particularly around Highbury Fields and the streets bordering Canonbury, where permitted development rights are restricted. Many of the larger Victorian houses are also split into flats, which can affect what's classed as permitted development for any individual unit. Buildaway checks your property's status and ownership structure first and manages whichever application route is needed.
What types of home extensions suit Highbury properties?
Highbury's tall Victorian terraces, many overlooking Highbury Fields or set on wide streets nearby, suit rear extensions, side returns, and loft conversions particularly well given their generous floor-to-ceiling heights. For properties converted into flats, ground-floor units sometimes have rear extension potential while upper flats are better suited to loft additions. Buildaway assesses the building and its current configuration before recommending an approach.
How long does a home extension take in Highbury?
Single-storey extensions typically take 12–14 weeks on site, with double-storey projects running 16–20 weeks. Loft conversions generally take 8–12 weeks depending on the roof structure involved. If a planning application is required, add 8–10 weeks for Islington's determination process. We set out a full programme covering planning and construction at the initial consultation.
Will I need a party wall agreement for my Highbury extension?
Almost certainly, given that Highbury's terraced houses share walls with neighbours on both sides. Loft conversions and rear extensions both typically require notices under the Party Wall Act. Buildaway manages the full process serving notices, liaising with adjoining owners, and coordinating with surveyors where an award is needed as a standard part of the project.
Do you handle both design and construction for Highbury extensions?
Yes architects, structural engineers, and all trades work through Buildaway directly. There's no handoff between a separate designer and a separate builder. One team manages everything from initial drawings and planning through to Building Control sign-off and final finishes.
Is a home extension in Highbury a good investment?
Highbury's proximity to Highbury Fields and good transport links keep demand high among families looking for larger homes in N5. A well-built rear extension or loft conversion on a typical Highbury terrace generally adds strong value, particularly where it creates an extra bedroom or a significantly larger kitchen-diner.
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.