House renovation
& refurbishment
in Highbury, N5
Architects, Engineers, Surveyors & Builders Under One Roof.
One Studio. One Contract. One Team.
Hampstead Chartered Surveyors & Building ConsultancyWhole-house refurbishment for Highbury's Georgian and Victorian houses, from the terraces of Highbury Place and Highbury Terrace to the villas of Highbury New Park and Aberdeen Park: one design and one contract for structure, services and rooms, worked out against the conservation guideline and any roof schedule that applies to your house.
House Refurbishment in Highbury: What You Need to Know
Refurbishing a Highbury house is largely a question of what you keep. Islington's Highbury Fields guidelines say the area's appearance comes mostly from its surviving eighteenth- and nineteenth-century buildings, with brick and render walls, slate roofs and timber joinery to windows and doors, and they ask that refurbishment of an existing building blends in with that character and reinforces it, taking care over the choice of brick and bond.
So each Highbury house starts with a measured survey and a condition record of the sashes, front door, roof slopes, chimneys and railings, and we decide with you what is repaired, what is renewed and what changes before a layout is fixed. There are around 4,500 listed buildings in Islington, according to the council's listed buildings page, and the national list is checked for the house on the first day.
The houses are not all alike. Highbury Fields gathers the Georgian terraces facing the open space and the villas north of it between Highbury Hill and Aubert Park; Highbury New Park is a gently curving road of large villas from the 1850s; and the Calabria Road streets are ornate red-brick terraces with bay windows from the end of the nineteenth century. Each has its own guideline, and the refurbishment is drawn to the one that applies.
Rear additions are where many Highbury house projects meet the guidelines. Both the Highbury Fields and the Highbury New Park documents state that a full-width rear extension of more than one storey, or a half-width one of more than two, will not normally be permitted unless it causes no harm to the area's character. They expect an extension to remain subordinate to the main house in mass and height, put its two-storey part on the staircase side of the back elevation, and keep the original windows, above all those lighting the principal rooms.
Side extensions are tighter again. In Highbury Fields a new or rebuilt single-storey side extension is allowed only on the addresses in Schedule 5.6, because the gaps between the detached and semi-detached villas open views to the gardens and trees behind. In Highbury New Park the exceptions are a short list of numbers on Highbury New Park and one on Grosvenor Avenue, and such an extension should stand at least two metres back from the front corner of the house.
At the front the guidelines ask for porticos, railings and boundary walls to stay. Highbury Fields names porticos to be kept on streets including Aubert Park, Highbury Crescent, Highbury Grove and Leigh Road, and describes black-painted cast-iron railings set in stone copings as a feature of Highbury Park, Highbury Place and Highbury Terrace. Highbury New Park records rendered walls and gate piers with open balustrading, and wants wooden gates kept and reinstated. A refurbishment that repairs these rather than replacing them keeps the house in step with its street.
House Refurbishment in Highbury: Roofs, Chimneys and Lofts
Within Highbury Fields, roof work is settled address by address. Schedule 5.2 lists houses where a traditional roof extension or dormer may be permitted, among them a run of numbers on Highbury Place and three on Hamilton Park; Schedule 5.3 lists existing mansards that should remain unaltered, including parts of Highbury Place, Highbury Terrace, Aubert Park and Corsica Street; Schedule 5.4 rules out new or altered dormers and rooflights on front or side slopes for houses such as 1–93 and 2–90 Highbury Hill; and Schedule 5.5 allows no roof extension or dormer at all on most of Highbury Park and on 1–17 Leigh Road. Even where a roof extension is acceptable in townscape terms, the guidelines say it still needs careful, detailed examination, with special regard for historic fabric.
Where a traditional mansard is allowed, the back should be mansarded too rather than built up in vertical brickwork, so that the butterfly or other original profile at the rear survives, and chimney stacks and pots visible from the street or public space are to stay. In Highbury New Park, new or altered dormers are not allowed on front or side slopes, three addresses (2–7 Beresford Terrace, 66 Highbury New Park and 1 Petherton Road) may have no dormers anywhere, and any roof alteration that needs permission must use natural slate. In the Calabria Road streets, a rear dormer can be considered if it sits below the main ridge, is set back at least 500mm from the rear wall and is inset from each party wall.
Sources: Islington, Highbury Fields (CA5) design guidelines, paragraphs 5.13 to 5.16 and Schedules 5.2 to 5.5; Highbury New Park (CA15) design guidelines, paragraphs 15.7 to 15.9; Calabria Road (CA38) design guidelines, paragraph 38.17.
Refurbishing a Highbury terrace or villa: what the work covers
Islington's Highbury Fields guidelines describe brick and render, timber windows and doors and slate roofs as carrying the area's character, with most houses having front basement areas behind cast-iron railings. Record the condition of each sash, door, roof slope and railing before weighing repair against replacement.
Source: Highbury Fields conservation area design guidelines (CA5), January 2002
The Calabria Road conservation area guidelines expect original sashes and front doors to be kept. Islington's window checklist treats only an exact replica as like-for-like, which may be double or vacuum glazed within limits, and handles a merely similar window differently, so settle which applies before ordering.
Source: Calabria Road conservation area design guidelines (CA38), June 2003 · Islington works to windows: planning permission checklist
Plan heating, insulation, ventilation and moisture as one whole-house decision, following Historic England's whole-building approach. Set out waste, supply and extract routes floor by floor before rooms are fixed, and investigate leaks uncovered during opening-up instead of hiding them. Rooms below street level need drainage, damp, floor levels and long-term flood risk checked first.
Source: Historic England: whole-building approach for historic buildings · Check long-term flood risk in England
Consents to check for a Highbury house
Neither the name Highbury nor an N5 postcode settles the council, the conservation boundary or the consent route. Look up the council for the complete address, then work through Islington's conservation-area map, any list entry, the Article 4 position and the planning record. Islington's Policy DH2 asks for a Heritage Statement with planning and listed building consent applications.
Source: GOV.UK: find your local council · Islington conservation-area register and map · Islington listed buildings and listed building consent · Islington permitted development and Article 4 directions · Islington Local Plan: Strategic and Development Management Policies
Purely internal work is generally not development. Islington's checklists confirm that permitted development is removed for material window changes, and for external wall insulation on house walls facing a public highway, in Highbury Fields, Highbury New Park, Aberdeen Park, Calabria Road and St Mary Magdalene. A direction is planned for Poets Road, so confirm its status with the council.
Source: GOV.UK: when planning permission is required · Islington works to windows: planning permission checklist · Islington external wall insulation: planning permission checklist · Poets Road conservation area management plan, October 2025
Listed building consent can reach internal as well as external work, and Islington warns that proceeding without it is a criminal offence even where the listing was unknown. Taking out structure, changing drainage, adding ventilation or rewiring can each bring Building Regulations into play. Cutting into a party wall or removing a chimney breast from one may need a Party Wall notice.
Source: Islington listed buildings and listed building consent · Historic England: listed building consent · GOV.UK: when you need Building Regulations approval · GOV.UK: party wall work you must tell your neighbour about
Running the works on a Highbury house
Islington permits noisy construction work on weekdays between 8am and 6pm and on Saturdays between 8am and 1pm, with the council's prior approval needed at other times. Check any planning condition for tighter limits, keep strip-out and opening-up within those hours, and warn attached neighbours before the loudest phases.
Source: Islington construction pollution and noisy hours
Scaffolding, hoardings, materials and containers on the highway need Islington licences, and only a company holding a waste carrier licence can apply for a skip licence. Holloway Road is a red route handled by TfL. Apply early for bay suspensions, allow for match-day parking controls near the Emirates Stadium, and agree access separately on Aberdeen Park, a private road.
Source: Islington highway licences and red routes · Islington skip licence · Suspend an Islington parking bay · Islington Emirates Stadium event-day parking restrictions · Aberdeen Park conservation area design guidelines (CA27), January 2002
If the garden will hold materials or provide access, check for protected trees first: Tree Preservation Order work needs consent, and work to trees in a conservation area needs advance notice to Islington. If the household stays at home, plan dust protection, service shut-offs and temporary washing and cooking facilities.
Source: Islington protected trees and conservation-area tree notices · Tree preservation orders and conservation-area trees
What to gather before pricing a Highbury house
Begin with the complete address and the kind of house, name the rooms to change and supply photographs of the frontage, staircase and any rooms below street level. List features to keep, such as sashes, front doors, chimneys or railings, and rank repairs, services, bathrooms and finishes, noting what is still open.
Collect drawings, any list entry and past planning or building-control decisions, noting the conservation area, Article 4 information and garden trees. Before new drains or other ground works, check Islington's policies map: the Highbury moated manor and grange Archaeological Priority Area lies partly within the Highbury Fields conservation area, and Policy DH2 requires an Archaeological Assessment where remains could be affected.
Source: Historic England: Islington Archaeological Priority Areas appraisal, 2018 · Islington Local Plan: Strategic and Development Management Policies
Describe damp or drainage problems already known, and ask for opening-up, a measured survey or ground investigation before quantities are fixed. Settle who prepares each application, notice and inspection, how changes are recorded and which completion documents you will receive.
Why Hampstead Renovations
A Highbury house is designed, engineered and built by one team. Our in-house architects, designers and structural engineers prepare the drawings, heritage information and calculations, and our site team builds from them, insured with £5M public liability, £10M employers' liability and contractors' all risks cover. The finished house carries a 12-month aftercare/defects period, and the insurance documents can be seen before you sign.
Discuss your project
Book a feasibility visitWhat does a house refurbishment cost in Highbury?
For a Highbury house the price follows the depth of work rather than the size of the house: repairs to slate roofs, sashes and front railings, how much of the wiring, plumbing and heating is renewed, whether walls or chimney breasts come out, and the consents and street licences those choices bring. Each is priced from the survey, and the total is fixed in writing only once the scope is agreed.
How depth of work, rather than the type of home, shapes a refurbishment budget is explained in our London refurbishment cost-per-square-metre guide, whose figures exclude VAT.
Planning your refurbishment budget?
Use our 2026 London refurbishment cost-per-square-metre guide to compare the owner-confirmed Essential, Premium and Heritage/Luxury guide bands. A written scope and site assessment are still needed before any project price can be fixed.
House Refurbishment in Highbury: Questions
Is every Highbury house in a conservation area?
No single rule covers the whole of N5. Highbury Fields, Highbury New Park, Aberdeen Park, Calabria Road and Poets Road each have their own conservation-area guidance, and a Highbury address may fall in one of them or in none. We confirm the position for the exact address on Islington's map before advising on windows, roofs or extensions.
Can we build a two-storey rear extension on a Highbury house?
Sometimes, within limits. The Highbury Fields and Highbury New Park guidelines expect a rear extension to stay subordinate to the main house and normally put any two-storey part on the staircase side, and they will not normally permit a full-width addition above one storey or a half-width one above two unless no harm to the area is shown.
How much does a whole-house refurbishment cost in Highbury?
We give a written price after a survey, not a figure for the postcode. The main variables are the condition of the roof, sashes and railings, how much of the wiring, plumbing and heating is renewed, any structural openings, and the consents and licences the work needs.
Do we have to keep the front railings and portico?
Islington's guidelines ask for them to be kept. Highbury Fields lists porticos to be retained address by address and will not give permission to alter or remove original front walls, railings or their footings, and Highbury New Park refuses permission to demolish or remove the porticos it names. Repair, and reinstatement to the traditional pattern, is the expected route.
Can we alter the roof of a Highbury house in a conservation area?
Only where the schedule for the address allows it. In Highbury Fields, Islington lists houses where a traditional roof extension may be permitted, where an existing mansard must stay as it is, where front and side dormers and rooflights are ruled out, and where no roof extension is allowed at all. In the Calabria Road streets, rear dormers can be considered when they sit below the main ridge, are set back from the rear wall and are inset from each party wall.
Relevant Completed House Refurbishment Projects
Guides & Local Reading
House Refurbishment in Nearby Areas
More Services in Highbury
Book a feasibility visit
Visit our studio or invite us to survey your home. We’ll assess scope, discuss design possibilities and provide an honest budget framework.
Consultation
We survey your property, discuss your vision and provide a clear budget framework.
Highbury history & architecture
Background on the streets, buildings and conservation history of Highbury: The History of Arsenal Stadium (former) · Highbury Park History · Guide to Renovating a Highbury Flat · The Great Estates of Highbury