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Grange Park N21 · House refurbishment

House refurbishment in Grange Park

Houses whose arches, casements and porches set the outside scope

A whole-house refurbishment in Grange Park often begins outside, with the details Enfield’s 2015 appraisal records road by road: cambered window arches, stone-mullioned casements, hood moulds and porches. This page covers what to record and match on The Chine, The Grangeway and Old Park Ridings, how the 2008 Article 4 direction reaches front painting and gardens, how road classes bear on a new driveway, basements, and the decisions to settle first.

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House refurbishment in Grange Park at a glance

Most houses on The Chine and Old Park Ridings appear on the schedule of Enfield’s 2008 Article 4 direction, which names only some on The Grangeway, and parts of Old Park Ridings lie outside the conservation area altogether. So look up your own address before the scope is written. For a house on the schedule, much of a refurbishment’s outside work, from new windows, doors and roof coverings to painting the front or a new front wall, gate or hard surface, can become a planning application where it faces, or can be seen from, a highway or open space.

Enfield: notice of the Enfield Borough Conservation Areas Article 4(2) Direction 2008, made 12 November 2008 and confirmed 29 January 2009 · Enfield: Grange Park Conservation Area Article 4(2) Direction map, 12 November 2008 (PDF) · Enfield: Grange Park Conservation Area Management Proposals, approved June 2015 (PDF) · Enfield: Find a planning application (the council’s online planning register)

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

Approved guide prices

What does a house refurbishment cost in Grange Park?

Cost in Grange Park 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

Grange Park houses: the details a refurbishment should match

Enfield’s 2015 appraisal describes the houses road by road. Record these details before work starts, since every repair, and any replacement, should be designed around them.

In the southern part of The Chine, the appraisal notes low, wide, shallow-cambered arches, used as window heads or as relieving arches with decorative infill. On the eastern stretch of The Grangeway, the houses share long ranges of stone-mullioned casements, and the corner houses have angled bays that, in the appraisal’s words, enhance their townscape value. Enfield’s Characterisation Study of February 2011, an evidence document on the wider Grange Park settlement, describes it as largely inter-war, built at a consistently low density and mainly semi-detached, and notes that The Chine and Old Park Ridings form a conservation area.

Enfield: Grange Park Conservation Area Character Appraisal, approved June 2015 (PDF) · Enfield Characterisation Study, Final Report, February 2011, Parts 5 to 6 (PDF)

In the northern half of Old Park Ridings’ northern section, many of the detached houses follow one of two main designs, and the appraisal records many variations on them, among them hood moulds over windows, moulded architraves, small hips at the top of gables and porches in timber, tile or stone. Two houses that look alike may differ in these small points, so a survey should note which version each house has before a porch, a gable or a window surround is repaired or remade. The repair then matches the house itself rather than its neighbour.

Enfield: Grange Park Conservation Area Character Appraisal, approved June 2015 (PDF)

The appraisal judged the replacement of traditional joinery ‘not yet a major problem’ in the residential roads, though it shows a poorly designed uPVC window and a bleak hard-standing in place of a front garden on Old Park Ridings as negative changes. The 2015 management proposals note that there had been no major development since 2008, although a number of houses had been extended, and list among the issues extensive paving of the front gardens of larger houses and crudely detailed uPVC replacements. Guidance for owners on maintaining and upgrading traditional joinery, they add, would help prevent poor replacements.

Enfield: Grange Park Conservation Area Character Appraisal, approved June 2015 (PDF) · Enfield: Grange Park Conservation Area Management Proposals, approved June 2015 (PDF)

Permissions and local rules

Outside the house: Grange Park checks before work starts

Painting the front of a scheduled house

Does repainting the front need permission?

It can. The 2008 direction withdraws the right to paint the exterior where it fronts a highway, open space or waterway, for the houses on its schedule. In July 2010 Enfield granted permission to repaint the windows, cills, bargeboards, soffits, door, canopy, handrail, gutter, fascias and soil pipe on the front of a house on Old Park Ridings, finding that the work would not detract from the area’s special character. The record does not show which colours were approved, and one decision sets no rule, so ask the council before a scheduled front is repainted.

Enfield: notice of the Enfield Borough Conservation Areas Article 4(2) Direction 2008, made 12 November 2008 and confirmed 29 January 2009 · Enfield: Find a planning application (the council’s online planning register)

Front gardens, walls and planting

What does Enfield hope to see at the front?

The appraisal particularly welcomes the places where traditional front gardens survive whole. It finds front-garden parking frequently intrusive, with hard-standings often too extensive, little planting and no boundary walls, and says the cumulative effect on a street is detrimental; a small plot crammed with cars that stick out past the boundary can affect the look of a whole street. The 2015 proposals encourage planted or partly planted front gardens to be reinstated when the chance arises and, where parking is established, partial reinstatement of traditional walls and planting.

Enfield: Grange Park Conservation Area Character Appraisal, approved June 2015 (PDF) · Enfield: Grange Park Conservation Area Management Proposals, approved June 2015 (PDF)

Classified roads and a new driveway

Does the road matter for a new crossover?

In the adopted DMD’s table of roads, Old Park Ridings, Old Park Avenue and Green Dragon Lane are Class 3 classified roads, while The Chine and The Grangeway fall under ‘all other roads’. DMD 46 says permission for a new access onto ‘A’ roads and other busy classified roads, those carrying more than 10,000 vehicles a day, judged case by case, will not normally be granted, and that parking which lets cars leave in forward gear is particularly important on classified roads. Whether Old Park Ridings counts as busy is Enfield’s call, so raise a crossover there early.

Enfield: Development Management Document, adopted November 2014

Basements and lightwells

Can a basement be added under a Grange Park house?

Some houses already have one. A building control record for a house on The Chine, dated October 2012, covers basement excavation, underpinning and waterproofing and is marked Building Work Complete; a 2024 record for a habitable basement with a lightwell on Old Park Ridings is so far only received. Neither says whether planning permission was sought. The council’s 2021 flood risk assessment, evidence for the plan at examination rather than adopted policy, recommends a groundwater flood risk assessment for any development with usable space below ground. On a scheduled house, a front lightwell alters an elevation the direction controls.

Enfield: building control · Enfield: New Enfield Local Plan 2041, Level 1 Strategic Flood Risk Assessment, December 2021 (evidence for the plan at examination, not adopted policy; PDF) · Enfield: notice of the Enfield Borough Conservation Areas Article 4(2) Direction 2008, made 12 November 2008 and confirmed 29 January 2009

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

What the work covers

What a Grange Park house refurbishment covers

Joinery and stonework repaired or remade to pattern

Windows, doors, porches and their surrounds are surveyed one by one, from the cambered arches and stone mullions of The Chine and The Grangeway to the hood moulds and architraves of Old Park Ridings. Sound timber is repaired; anything past repair is drawn and remade to the existing pattern. On a scheduled house, alterations on an elevation the direction covers are applied for before anything is ordered, and replacement windows are a standard item in Enfield’s 2026-27 building control charges.

Enfield: Grange Park Conservation Area Character Appraisal, approved June 2015 (PDF) · Enfield: notice of the Enfield Borough Conservation Areas Article 4(2) Direction 2008, made 12 November 2008 and confirmed 29 January 2009 · Enfield: Building Control Charges 26/27, effective 1 April 2026 (PDF)

The front garden, boundary and rainwater

Where the front is part of the job, the scope can replace bare hard-standing with a traditional wall, hedge or planting, re-lay paths, repair gates and deal with rainwater from the roof and any drive. On a house on the schedule, a new hard surface, wall or gate fronting the road needs planning permission first, and Enfield requires a sustainable drainage strategy with every planning application, on its minor pro-forma for a householder one.

Enfield: Grange Park Conservation Area Management Proposals, approved June 2015 (PDF) · Enfield: notice of the Enfield Borough Conservation Areas Article 4(2) Direction 2008, made 12 November 2008 and confirmed 29 January 2009 · Enfield: sustainable drainage systems (page modified 12 February 2026)

Inside: services and structure

Inside, the work usually takes in rewiring, heating and plumbing, insulation, a kitchen and bathrooms, and any change of layout. Removing a load-bearing wall and removing chimney breasts are separate items in Enfield’s building control charges for 2026-27, in force from 1 April 2026, and where plans show several works a standard charge applies to each part, with a discount for each additional one. So list every structural change before the application is made.

Enfield: Building Control Charges 26/27, effective 1 April 2026 (PDF)

How we work

How we run a Grange Park 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 Grange Park. 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. Look up the address first

    Check the house against the 2008 Article 4 schedule and map, and confirm whether it is inside the conservation area. Note whether it stands on a classified road such as Old Park Ridings or on The Chine or The Grangeway, and send us what you find with the full address.

  2. Photograph the details

    Send photographs of the front elevation, the window heads and arches, the porch, any gables and hood moulds, the roof and chimneys, and the front garden and boundary as they are now. Say which windows and doors you believe are original and which have been replaced.

  3. Decide on the front and below ground

    Say early whether the front garden, a driveway, a basement or a lightwell is part of the job, because each brings its own checks: the 2015 proposals on planting and walls, DMD 46 on new access, and building control and flood evidence below ground. Items you have not decided can be priced as allowances.

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 Grange Park: questions

Can a corner house on The Grangeway be extended to the side?

Expect a planning application and a careful design. In a conservation area, an extension beyond a side wall is not householder permitted development. On a corner plot, adopted DMD 14 also permits a side extension only where it keeps a distance between its flank wall and the back edge of the pavement on the return frontage, judged against the building line, local character, bulk, visibility splays and amenity space. The appraisal values the angled bays of the eastern Grangeway’s corner houses, so any addition should leave them clear to see.

Householder permitted development technical guidance · Enfield: Development Management Document, adopted November 2014 · Enfield: Grange Park Conservation Area Character Appraisal, approved June 2015 (PDF)

Does a rear extension need planning permission here?

It depends on the house and the design. The 2008 direction applies to scheduled houses’ elevations facing or visible from a highway or open space, so a rear elevation seen from a road or facing an open space may be covered; ask Enfield. Where permission is needed, adopted DMD 11 measures a single-storey extension from the original house however deep the neighbours’ extensions are, and among its tests are a limit on height at the eaves and either a 45-degree line from the neighbour’s nearest original ground-floor window or a common alignment of rear extensions.

Enfield: notice of the Enfield Borough Conservation Areas Article 4(2) Direction 2008, made 12 November 2008 and confirmed 29 January 2009 · Enfield: Development Management Document, adopted November 2014

Can uPVC windows be replaced with timber again?

Possibly, but on a scheduled house plan for an application. The 2015 management proposals say planning permission must be sought to change windows on frontages facing a highway, footpath or public open space, and that applies whichever way the change goes. Take the pattern from the house’s own surviving windows, or from a neighbour of the same design that keeps its originals, and record the details the appraisal gives for your road. A repair that does not materially affect the outside appearance is not development at all.

Enfield: Grange Park Conservation Area Management Proposals, approved June 2015 (PDF) · Enfield: Grange Park Conservation Area Character Appraisal, approved June 2015 (PDF) · When planning permission is required

Does Salmons Brook matter for a house here?

It shaped the estate: the appraisal records that its developer built two new bridges over Salmons Brook and straightened its course, and that there are areas of scrub around the brook where it passes under Old Park Ridings. The council’s 2021 flood risk assessment, evidence for the plan at examination, places the borough’s functional floodplain mainly in green spaces outside the Lee valley, Enfield Golf Course among them, and says nothing about these houses. Before ground-level work, check the long-term flood risk on GOV.UK, which gives an area’s risk, not a single house’s.

Enfield: Grange Park Conservation Area Character Appraisal, approved June 2015 (PDF) · Enfield: New Enfield Local Plan 2041, Level 1 Strategic Flood Risk Assessment, December 2021 (evidence for the plan at examination, not adopted policy; PDF) · Check long-term flood risk in England

How can I find out what was done to the house before?

Search Enfield’s planning register, which holds application records from 1948, though most documents are online only from 2006, and the council’s search of building control applications, which records notified work and its status. A basement, loft room or extension may show as Building Work Complete, as only received, or with no status shown, and the difference matters when you buy or plan more work. Ask the seller or the council for the completion certificates of anything recorded.

Enfield: Find a planning application (the council’s online planning register) · Enfield: building control

How much does a house refurbishment cost in Grange Park?

It depends on scope. In Grange Park, 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 Grange Park house

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

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

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