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Cockfosters EN4 · House refurbishment

House refurbishment in Cockfosters

Estate cottages, inter-war streets and the Games Road edge

Two councils keep the records for houses called Cockfosters. Enfield’s 2015 Trent Park appraisal reports how the Cockfosters Road cottages have fared since the 2006 direction, and its 2011 Characterisation Study describes the inter-war streets beyond them. Across the boundary, Barnet’s 2007 Monken Hadley appraisal describes the houses on Games Road and Verwood Drive. Check the address, then read the right council’s appraisal and register before a house refurbishment is drawn.

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House refurbishment in Cockfosters at a glance

Enfield’s 2015 appraisal finds the late Victorian cottages on Cockfosters Road well maintained and near their original state. Where front gardens became hard standing, gravel matching the street and picket fences kept along the side boundaries help to reduce some of the impact, and since the 2006 Article 4(2) direction original detailing is slowly being recovered. It is cooler about later building: it calls one side extension to the Georgian terrace unfortunate, says a modern garage with an illuminated sign and a modern house mar the setting at the ends of the terrace, and finds a newer development behind the cottages fairly neutral because it is largely hidden.

Enfield: Trent Park Conservation Area Character Appraisal, approved February 2015 (PDF)

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

Approved guide prices

What does a house refurbishment cost in Cockfosters?

Cost in Cockfosters 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

Listed cottages, inter-war streets and Games Road houses

Each group of Cockfosters houses has its own record: Enfield’s register for the listed cottages, Enfield’s 2011 study for the inter-war streets, and Barnet’s 2007 appraisal for Games Road and Verwood Drive.

Enfield’s register shows changes to the grade II listed group at 325–335 Cockfosters Road going through listed building consent. In 2004 Enfield granted consent, with conditions, at one of these listed cottages for rebuilding and extending the single-storey rear projection with an extra rooflight, a replacement first-floor rear window, internal alterations and re-slating the whole roof. In 2025 another cottage in the group was granted householder permission and listed building consent, both with conditions, for a single-storey rear and side extension, with a small section of wall removed and an internal partition, described as not historic, taken out.

Planning Data: 325–335 Cockfosters Road, Grade II, list entry 1079465 · Enfield: Find a planning application (the council’s online planning register)

Away from Cockfosters Road, Enfield’s Characterisation Study of February 2011 calls the suburbs classic inter-war development. Plot and house sizes are fairly regular, it says, and the buildings vary within a limited palette of materials and details, which helps to create a cohesive whole. The same study warns that the green spaces of classic suburbs, Cockfosters among them, are under threat from the pressure on streets and gardens to provide parking, with a loss of character as the result. The study is planning evidence, not policy.

Enfield Characterisation Study, Final Report, February 2011, Parts 5 to 6 (PDF)

On the Barnet side, the 2007 Monken Hadley appraisal describes the Cockfosters end of its conservation area in detail. On Games Road it found three modern detached houses standing well back behind lawns with no formal boundaries beyond a few rocks laid to protect the grass. The grounds of West Farm Court, owned by electricity companies after the Second World War, were developed for housing in 1993, forming the rest of Gatcombe Way and Verwood Drive, and three of the four houses in one Verwood Drive row have conservatories that are not highly visible from the road.

Barnet: Monken Hadley Conservation Area Character Appraisal Statement, adopted January 2007 (PDF)

Permissions and local rules

Checks for a Cockfosters house before the drawings are fixed

Extending one of the listed cottages (Enfield)

What does a rear or side extension at 325–335 Cockfosters Road involve?

Expect more than one consent. The 2025 rear and side extension in the listed group went through householder permission as well as listed building consent. On the planning side, Enfield’s Development Management Document says a flat-roofed single-storey rear extension should not exceed 3 metres to the eaves, with an allowance of 3.3 to 3.5 metres to the top of a parapet wall, and that it must not cross a 45-degree line drawn from the mid-point of the nearest original ground-floor window of the house next door, unless it secures a common alignment of rear extensions.

Enfield: Find a planning application (the council’s online planning register) · Enfield: Development Management Document, adopted November 2014

Roof work and rooflights on the Barnet side

Which roof changes has Barnet looked at near Cockfosters?

Barnet’s 2026 extensions guidance is not intended for homes in conservation areas or locally or nationally listed buildings, though it may be pertinent to them in certain instances; one passage says rooflights on their front and rear slopes should be conservation-type, flush with the roof. On Mount Pleasant, in East Barnet ward, Barnet’s register shows a 2025 certificate that a proposed hip-to-gable extension with a rear dormer and three front rooflights would be lawful at one house, and a 2026 finding that replacing a rear flat roof with a pitched roof and two rooflights at another would not be.

Barnet Sustainable Design and Development Guidance SPD, adopted 15 June 2026: Part 4, guidance on residential extensions and alterations (not intended for conservation areas or nationally or locally listed buildings) · Barnet planning register: public access search (planning, building control and licensing)

Front gardens, parking, trees and drainage

Can a front garden at a Cockfosters house become parking?

In Barnet’s conservation areas, the Local Plan says proposals that lose trees or garden space, such as turning front gardens into hardstanding, will be refused where they harm the area’s character and appearance. The Monken Hadley appraisal counts the trees and green spaces inside the residential curtilages on the southern side of Games Road as an integral part of the area. For an Enfield householder application, the council asks for its shorter minor SuDS pro-forma, and its Development Management Document requires smaller schemes to maximise sustainable drainage, including at least one at-source measure.

Barnet Local Plan 2021–2036, adopted 4 March 2025: the plan and its adoption documents · Barnet: Monken Hadley Conservation Area Character Appraisal Statement, adopted January 2007 (PDF) · Enfield: sustainable drainage systems (page modified 12 February 2026) · Enfield: Development Management Document, adopted November 2014

What the appraisals say went wrong before

Which past additions do the councils criticise here?

Barnet’s 2007 appraisal says the large brick houses behind Ludgrove Hall are untypical and unsympathetic because of their cul-de-sac layout and the enclosure of their perimeter, and that the development fails to reflect the conservation area’s character. Barnet’s Local Plan asks extensions, among other things, to complement the existing building’s style, form and materials, to be subordinate to it in size, scale or height, and to have a sympathetic roof profile. In Enfield, DMD 13 says a side roof extension must not disrupt the character or balance of a house or of the pair or group it belongs to.

Barnet: Monken Hadley Conservation Area Character Appraisal Statement, adopted January 2007 (PDF) · Barnet Local Plan 2021–2036, adopted 4 March 2025: the plan and its adoption documents · Enfield: Development Management Document, adopted November 2014

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

What the work covers

What a Cockfosters house refurbishment covers

A survey of what survives

We measure the house and record what is original and what later owners added: the roof covering and its fixings, windows and doors, chimneys, porches, the rear projection and any conservatory. For a cottage on Cockfosters Road or a house on Games Road, the survey also notes which elevations face the street or open land, because that often decides which consent an outside change needs.

Extensions, roofs and the rooms behind

Rebuilding a rear projection, replacing a conservatory with a solid room or forming a room in the roof are common items in a whole-house scheme. We resolve the roof, structure and drainage together, so that the planning drawings, any listed building consent drawings and the Building Regulations package all describe the same design.

Services, insulation and finishes

Heating, wiring, plumbing, insulation and ventilation are planned as one system, with routes chosen to avoid cutting historic fabric where the house is listed. Kitchens, bathrooms, joinery and decoration follow, and the specification lists any outside materials to be matched, such as slate, brick, render or timber, so that every contractor prices the same thing.

How we work

How we run a Cockfosters 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 Cockfosters. 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. Name the council

    Give the full address and postcode and say which council you think it is in. Around Cockfosters the Enfield–Barnet boundary runs between neighbouring streets, so a postal address that says Barnet does not settle it. Tell us if the house is listed, on Enfield’s 2006 schedule or in a conservation area, or ask us to check.

  2. Gather the house’s papers

    Look out the title, any earlier drawings and the paperwork for past permissions, listed building consents, certificates and building control completions. Conditions on an earlier permission can still apply, and a missing completion certificate is easier to sort out before work starts than during a sale.

  3. Rank the outside changes

    List the outside changes you want, such as a rear extension, roof work, new windows, a porch or a parking space, in order of importance. These carry the consent questions and the longest lead times, so they are settled before the inside layout is fixed.

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 Cockfosters: questions

Has Enfield allowed extensions at the listed cottages on Cockfosters Road?

Yes, case by case. Besides the 2004 and 2025 decisions described above, its register shows listed building consent granted with conditions in 2006 for replacing a rear conservatory with a single-storey extension at a third cottage in the 325–335 group. Each decision rests on that house and its drawings, so an approval next door does not settle yours. Design the extension with the listed fabric it touches in mind, and allow for conditions on materials and details.

Enfield: Find a planning application (the council’s online planning register) · Planning Data: 325–335 Cockfosters Road, Grade II, list entry 1079465

Do I need permission to keep or add a flue through a flat roof?

It can need one. On Games Road, Barnet approved in 2026, subject to conditions, a retrospective application to keep a chimney flue projecting through the flat roof of an extension at one house. Asking after the event risks having to alter work already built, so check the planning position, and the Building Regulations route for the appliance and flue, before a stove or boiler flue is installed.

Barnet planning register: public access search (planning, building control and licensing)

Can a building notice be used for an extension at an Enfield address?

Enfield’s building notice checklist says a notice for an extension must come with a plan at a scale of not less than 1:1250 and particulars of the drainage, and that a notice lapses three years after it is given unless the work has started. A full plans application suits complex work better, because the drawings are checked before building starts. For a Barnet address, the GOV.UK guide sets out the same national routes.

Enfield: building notice notes and checklist (PDF) · GOV.UK: Building Regulations approval

Can I add a porch to a cottage on Games Road?

Ask Barnet first. Its 2007 appraisal records that front porches have been added to most of the terrace of modest cottages at 10 to 18 Games Road, built in 1750, whose houses have no formal boundaries. In conservation areas, Barnet’s Local Plan says alterations should normally use materials matching the original, and that reinstating lost traditional features will be considered where there is enough evidence for an accurate replacement.

Barnet: Monken Hadley Conservation Area Character Appraisal Statement, adopted January 2007 (PDF) · Barnet Local Plan 2021–2036, adopted 4 March 2025: the plan and its adoption documents

How do I find what was decided at my house before?

Search the right council’s register by address. Enfield’s online register holds planning records from 1948, with most documents online from 2006, and Barnet’s public access register covers planning and building control. Look for permissions with conditions, listed building consents, certificates of lawfulness and completion records, and bring them to the first visit so the design starts from what is lawful today.

Enfield: Find a planning application (the council’s online planning register) · Barnet planning register: public access search (planning, building control and licensing)

How much does a house refurbishment cost in Cockfosters?

It depends on scope. In Cockfosters, 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 Cockfosters house

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

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

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