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Barnsbury N1 · House refurbishment

House refurbishment in Barnsbury

Stucco villas, end-of-terrace houses and listed rows

Barnsbury’s houses, as Islington’s registers describe them, range from stucco villas with semi-basements and attics to terraces of three storeys over basements. This page goes through what those records say about the houses themselves, then the rules on rear extensions, roofs, front steps, windows and lower floors that shape a whole-house refurbishment here.

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Serving Barnsbury from our Hampstead studio · NW3 6DN
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House refurbishment in Barnsbury at a glance

For a whole house in Barnsbury, three records set the starting point. Historic England’s list includes runs of houses at Grade II, such as 44–114 Cloudesley Road, 93–113 Hemingford Road and 118–160 Barnsbury Road. Islington’s April 2010 local list adds single houses, pairs and short terraces, graded A, B or C. The conservation area guidelines then name, address by address in Schedule 10.2, the houses where a roof extension may be considered. Find your house number in all three before a survey becomes a scope, because each changes what can be altered and how.

Planning Data (Historic England): 44-114 Cloudesley Road, Grade II, list entry 1195550 · Planning Data (Historic England): 93-113 Hemingford Road, Grade II, list entry 1195613 · Planning Data (Historic England): 118-160 Barnsbury Road, Grade II, list entry 1204578 · Islington Register of Locally Listed Buildings and Locally Significant Shopfronts, April 2010 (PDF) · Islington: Barnsbury (CA10) Conservation Area Design Guidelines, January 2002 (PDF)

For the whole area, including conservation areas, permissions and working hours, read our Barnsbury renovation guide.

Approved guide prices

What does a house refurbishment cost in Barnsbury?

Cost in Barnsbury depends on depth of work. A cosmetic refurbishment that keeps the existing layout runs £650–£1,250/sqm (typically £90,000–£180,000), while a back-to-brick renovation runs £2,250–£3,250/sqm (typically £275,000–£475,000), excluding VAT. A written scope and site assessment are needed before any project price can be fixed.

Scope of workGuide rateTypical total
Cosmetic — existing layout retained£650–£1,250/sqm£90,000–£180,000
Back-to-brick renovation£2,250–£3,250/sqm£275,000–£475,000
Typical programme16–32 weeks on site

Guide rates exclude VAT and are set by depth of work, not by postcode. Compare scopes in our London refurbishment cost-per-square-metre guide or try the cost calculator.

The buildings

Villas, end-of-terrace houses and listed rows on record

Islington’s local list, and a council report summarising Historic England, describe several Barnsbury houses closely. Together they show what a refurbishment must work around: semi-basements and basements, attics and dormers, stucco, sashes and ironwork.

The 2010 local list describes 38 and 40 Belitha Villas, from the 1840s, as a pair of stucco-fronted villas of two storeys with semi-basements and small attics, under a shallow hipped roof with wide eaves. At 35 College Cross, from about 1835, it records an end-of-terrace house of basement and three storeys, two bays wide, with a two-storey side pavilion, stucco, round-arched ground-floor windows and cast-iron railings. The council placed the Belitha Villas pair in its grade B and the College Cross house in grade A.

Islington Register of Locally Listed Buildings and Locally Significant Shopfronts, April 2010 (PDF)

No. 15 Huntingdon Street, dated 1860 on the same list, is an end-of-terrace house of three storeys with a rusticated stucco ground floor and its original cast-iron railings. For 16–62 Barnsbury Road, a Grade II terrace close to the Barnsbury Estate, Islington’s December 2022 planning report on Old Barnsbury summarises Historic England’s description: three storeys over a basement with attic dormers, and sash windows, arched and radial glazing bars and cast-iron railings among the features that contribute to its listing.

Islington Register of Locally Listed Buildings and Locally Significant Shopfronts, April 2010 (PDF) · Islington Planning Committee report: Old Barnsbury, The Barnsbury Estate, 6 December 2022 (PDF) · Islington Local Plan: Site Allocations, adopted 28 September 2023 (PDF)

The records do not always line up house by house. Historic England listed 118–160 Barnsbury Road at Grade II in 1994, which takes in No. 160; No. 162 lies outside that range, and the 2010 local list still shows the two houses together as locally listed in 1978. Neighbouring houses can therefore sit under different regimes, so take the status of your own number from its current entry rather than from the terrace as a whole.

Planning Data (Historic England): 118-160 Barnsbury Road, Grade II, list entry 1204578 · Islington Register of Locally Listed Buildings and Locally Significant Shopfronts, April 2010 (PDF)

Permissions and local rules

Rear additions, roofs, front steps and lower floors

Rear and side extensions

How far can a Barnsbury house extend?

The Barnsbury guidelines want a rear extension kept subordinate to the main building, with any two-storey part normally on the staircase side, and they rule out side extensions to detached and semi-detached houses. Islington’s Urban Design Guide adds that a rear extension should stop a full storey below the eaves, that extensions above two storeys in total are not normally permitted in conservation areas, and that a lower ground or ground floor extension within a lightwell or beyond the back addition can work if enough garden is kept.

Islington: Barnsbury (CA10) Conservation Area Design Guidelines, January 2002 (PDF) · Islington Urban Design Guide SPD, January 2017

Roof extensions and mansards

Is my house one where a roof extension may be considered?

Schedule 10.2 of the guidelines lists, street by street, the houses where a traditional roof extension may be permitted; its entries include 29 Barnsbury Square, 2 Lonsdale Place and the even numbers 62 to 82 Thornhill Road. On those houses a traditional mansard should be mansarded front and rear, sit behind the parapet walls and keep the V line of a butterfly roof or other original rear profile, with original chimney stacks and pots retained. Listed status is still weighed for houses on the schedule.

Islington: Barnsbury (CA10) Conservation Area Design Guidelines, January 2002 (PDF)

Front steps and step-free access

Can the front entrance change for access?

Front basement areas and entrance steps are normally protected from infilling and widening, but paragraph 10.32 of the guidelines treats the needs of disabled people as an exception to that policy and says essential adaptations will be allowed. If the refurbishment must give someone a ramp, a level threshold or an easier way down to the lower floor, say so at the start, so that the design and the application are built around it rather than added later.

Islington: Barnsbury (CA10) Conservation Area Design Guidelines, January 2002 (PDF)

Lower floors and flood assessments

When does a flood risk assessment come in?

Islington sits wholly in Flood Zone 1 for rivers, yet its Local Plan names groundwater, sewers and surface water as flood sources. Policy S8 asks for a site-specific Flood Risk Assessment where new development adds more than 100sqm of floorspace in a critical drainage area, and more than half the borough lies in one. The Basement SPD requires one for any basement application in a Local Flood Risk Zone or another area at risk of flooding, and asks site investigations to consider private drains, highway drainage and culverted watercourses.

Islington Local Plan: Strategic and Development Management Policies · Islington Basement Development SPD, January 2016

Working hours, skips, parking and the conservation area maps for the whole area are in our Barnsbury guide. Local guidance checked ; requirements depend on the address, the building and the complete proposal.

What the work covers

What a whole-house refurbishment in Barnsbury takes in

Roof, chimneys and top floor

The scope starts at the top: the roof covering, the valley gutter or hipped slopes, parapets, chimney stacks and pots, and the attic or top-floor rooms beneath them. Where the house appears in Schedule 10.2, any roof extension is designed within the same scope; where it does not, the guidelines permit no roof extension visible from any street level position, so the top floor is usually replanned inside the existing profile, with rooflights kept off the slopes the guidelines protect.

Islington: Barnsbury (CA10) Conservation Area Design Guidelines, January 2002 (PDF)

Principal floors and original joinery

On the main floors, the scope records which sashes, shutters, doors, fireplaces and plasterwork stay, which are repaired and which are new. Islington’s design guide expects replacement windows in the original style and materials, and in a listed house accepts replacement only where the originals are beyond repair, so a window schedule giving the condition of every sash belongs in the scope from the first survey.

Islington Urban Design Guide SPD, January 2017

Lowest floor, drainage and the rear

The lowest floor often changes most: a kitchen or utility room, new drainage, damp repairs and a link to the garden. The scope sets out the drainage runs to the sewer, any lightwell or rear extension, the risers that take new services up through the house, and whether the added floorspace is large enough to bring a flood risk assessment into the application.

How we work

How we run a Barnsbury house refurbishment

  1. Free feasibility visit

    We walk round the house with you and discuss what is feasible.

  2. Survey

    Rooms, levels and features to keep are measured, with opening-up or asbestos checks where needed.

  3. Design and consents

    Our own architects and structural engineers design the layout and structural openings, plan the service routes with them, and identify which consents and party wall notices apply.

  4. Price and contract

    A fixed written price and a JCT contract follow the survey, scope and specification. It records allowances, exclusions and how changes are priced.

  5. On site

    Work is inspected before it is covered, and a director reviews key decisions.

  6. Handover

    Testing, commissioning and snagging. Completed work carries a 12-month defects-rectification period under the JCT contract terms.

Real projects, clearly located

Examples of our house refurbishment work elsewhere in London

None of these projects is in Barnsbury. Each card names where the work was done, so you can judge the finish and the approach before you brief your own.

Your brief

Before you ask for a quotation

  1. Find your house in each record

    Look up your house number in Historic England’s list, Islington’s local list and the guidelines’ schedules, and note what each says. Where an entry covers a run of numbers, confirm that yours falls inside it, because in Barnsbury a listed house and an unlisted one can stand side by side.

  2. Describe the house floor by floor

    List each floor from the basement or semi-basement up to the attic, with what you want to change in each room, the original features you know survive, and any past extensions or roof work with their planning history. Measurements or old sale particulars help us understand the plan before we visit.

  3. Say how the house must work afterwards

    Tell us who will live in the house, whether anyone needs step-free access or a bedroom on the entrance floor, and whether you plan to stay during the work. These answers decide how the lowest floor, the stairs and the front entrance are designed, so they belong in the brief rather than in a later change.

Ready to take the next step? Send the address and a short outline of the work.

Book a free feasibility visit

Questions before you begin

House refurbishment in Barnsbury: questions

Is my Barnsbury house listed, locally listed or neither?

Check by house number rather than by street. Historic England’s Grade II entries here often cover runs of numbers, while Islington’s local list also names single houses and pairs. The published register stops at 2010, so use the council’s interactive map for later local listing. Where an entry gives a range, confirm whether it counts odd, even or consecutive numbers, because the entry itself may not say.

Planning Data (Historic England): 44-114 Cloudesley Road, Grade II, list entry 1195550 · Islington Register of Locally Listed Buildings and Locally Significant Shopfronts, April 2010 (PDF) · Islington locally listed buildings

Can I add a storey on top of the back addition?

Sometimes. Islington’s Urban Design Guide says a single half-width upper floor over an existing extension is often acceptable when a clear gap is left between the eaves of the house and the top of the extension. In a conservation area, though, extensions above two storeys in total will not normally be permitted, so the height of the existing addition decides whether there is any room to build. A measured survey of the back of the house comes first.

Islington Urban Design Guide SPD, January 2017

My house has lost its portico. Do I have to reinstate it?

The guidelines put it as encouragement: they say the council will encourage owners to reinstate missing details. Schedule 10.1 names reinstatement of porticos at all Belitha Villas properties without them, lists porticos to be kept at 6 and 28 Barnsbury Square and at several Thornhill Road houses, and singles out the sphinxes on the entrance steps on the south side of Richmond Avenue. A whole-house refurbishment is a sensible moment to price a reinstatement.

Islington: Barnsbury (CA10) Conservation Area Design Guidelines, January 2002 (PDF)

Should the work go through a building notice or full plans?

Islington says work can begin two working days after a building notice, while with a full plans application it is advisable to wait for the decision, and full plans approval lapses if work has not started within three years. Where a refurbishment changes the structure of a house, approved drawings before work starts are usually worth the wait. Keep the completion certificate: Islington calls it important evidence when you come to sell.

Islington Council: building control application forms and fees · Islington Council: building control FAQs

What should the first survey of a Barnsbury house record?

Enough to price the whole house: a measured plan of every floor, the roof and rainwater goods, chimney stacks, each sash and shutter, the joists wherever a floor will be opened, the drainage route to the street and any damp in basement walls. It should also record the condition of every feature the list entry or local list describes.

How much does a house refurbishment cost in Barnsbury?

It depends on scope. In Barnsbury, a cosmetic refurbishment keeping the existing layout runs £650–£1,250/sqm (typically £90,000–£180,000); a back-to-brick renovation runs £2,250–£3,250/sqm (typically £275,000–£475,000), excluding VAT. A written scope and site assessment come before any fixed price.

Book a free feasibility visit

Talk to us about your Barnsbury house

Tell us the address and what you want to change in your Barnsbury house. We reply within one working day, Monday to Friday, 8am to 6pm.

Or call 020 7101 3168. We serve Barnsbury from our studio at Unit 3, Palace Court, 250 Finchley Road, London NW3 6DN.

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