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Brondesbury Park NW6 · Flat refurbishment

Flat refurbishment in Brondesbury Park

Divided villas, named blocks and Christchurch Court

Brent’s records name three kinds of flat here: Victorian villas divided into flats, purpose-built blocks such as Thanet Lodge, Marlow Court and Tarranbrae, and the homes at Christchurch Court, whose addresses Brent links to the Grade II Christ Church. Brent has decided many applications for their windows, roofs and conversions. This page sets out what those decisions show, the consents a flat owner needs, and how sound, shared parts and lower-ground rooms affect the work.

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Flat refurbishment in Brondesbury Park at a glance

Brent’s register shows window decisions for flats differing by building. At Tarranbrae, on the corner of Christchurch Avenue and Willesden Lane, Brent refused in 2005 to let replacement uPVC windows to a flat stay, then granted aluminium double glazing; in February 2025 it granted double-glazed timber sashes for a flat after the Heritage Officer asked for details of the joinery. At a locally listed villa on Willesden Lane divided into flats, Brent accepted aluminium sashes in 2014, under the plan then in force, only at the side and rear, out of view of the street, with the front timber sashes to be kept and repaired.

Brent: viewing or commenting on planning applications (search Brent’s planning register)

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

Approved guide prices

What does a flat refurbishment cost in Brondesbury Park?

A flat refurbishment in Brondesbury Park runs £900–£1,700/sqm excluding VAT, and a full two-bedroom refurbishment typically lands between £60,000 and £110,000. Most programmes take 16–32 weeks on site. A written scope and site assessment are needed before any project price can be fixed.

Scope of workGuide rateTypical total
Full flat refurbishment (2-bed)£900–£1,700/sqm£60,000–£110,000
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

Brondesbury Park flats: divided villas, named blocks and Christchurch Court

Brent’s register names many of the buildings that hold flats here, and its decisions describe them: purpose-built blocks, villas divided over the years, and the homes at Christchurch Court.

Purpose-built blocks stand among the villas. Brent’s 2019 list of properties inside the Brondesbury Conservation Area names Thanet Lodge with the Mapesbury Road houses. Tarranbrae, a block of 59 flats, and Marlow Court stand on Willesden Lane; check each address on Brent’s map. Planning Data records Brent tree preservation zones named after Thanet Lodge and after Marlow Court and its surroundings. On Christchurch Avenue the register names Rosedene, Willow Court and Brondeswell Court as blocks of flats, and records a 2003 permission at Woodlands House for a four-storey block of 28 flats with a terrace of houses.

Brent Historic Environment Place-making Strategy appendices, May 2019 · Brent: viewing or commenting on planning applications (search Brent’s planning register) · Planning Data: tree preservation zone, Thanet Lodge, Mapesbury Road Area, from 19 December 2007 · Planning Data: tree preservation zone, Marlow Court and Surrounding Area, from 4 March 2008

Other flats are in villas divided over time, and the register’s descriptions show how varied they are. One is a Victorian villa on Cavendish Road, then a house in multiple occupation, for which Brent approved five flats in 2015. Another, on Mowbray Road, was recorded in 2025 as lawfully a house but used as 12 bedsits and a lower-ground flat. On Christchurch Avenue the register describes a house divided into flats, and entries on the street mention basement flats in converted houses.

Brent: viewing or commenting on planning applications (search Brent’s planning register)

Christchurch Court is a different case. Brent links its addresses to the Grade II list entry for Christ Church on Willesden Lane, and a 2020 Brent officer report records that the church’s nave and aisles were subdivided into residential flats in 1989. The same report’s site history lists a permission granted in 1985 for the part change of use of the church to 21 flats: six studios, five one-bedroom, nine two-bedroom and one three-bedroom. For work inside any of these homes, listed building consent is therefore the first question.

Planning Data: Brent listed-building outline, 1 Christchurch Court, Willesden Lane · Planning Data: Christ Church, Grade II, list entry 1294606 · Brent: viewing or commenting on planning applications (search Brent’s planning register) · Brent: listed buildings and conservation areas

Permissions and local rules

Consents and decisions for a Brondesbury Park flat

Windows in purpose-built blocks

What has Brent granted for the windows of a block?

At Marlow Court on Willesden Lane, Brent’s register shows replacement aluminium windows granted for the block’s front, side and rear elevations in August 2008, Crittall windows for the same elevations in March 2009, and white aluminium double glazing for two flats in 2020. It does not show which, if any, were carried out. On Christchurch Avenue, replacement uPVC windows were granted at Willow Court in 2012. Each is a decision about one building at one date, so check your address on Brent’s map before choosing a frame.

Brent: viewing or commenting on planning applications (search Brent’s planning register) · Brent: listed buildings and conservation areas

Roof slopes, slates and solar panels

What about the roof of a building of flats?

In September 2025 Brent granted solar panels on the rear roof slope of a building of flats on Christchurch Avenue, in the Brondesbury Conservation Area, on condition that they project no more than 150mm. The officer’s report said panels will not be granted on slopes facing or visible from the street: a statement in that one decision, not a published rule. In July 2025 Brent granted re-slating a house divided into flats on the same road with slates of similar appearance, after the Heritage Officer asked for revised drawings and a slate specification.

Brent: viewing or commenting on planning applications (search Brent’s planning register)

Turning a villa into flats

What did Brent look for in a conversion?

In December 2024 Brent refused a Mowbray Road villa’s conversion and new side building, partly for poor outlook from lower-ground bedrooms and no fire statement. Four flats, two of three bedrooms, were approved in July 2025 without the side building, with deeper lightwells, though the officer found that outlook quite limited. Policy BH11 allows converting a home of three or more bedrooms only if it meets all three: at least 130 square metres or acceptably extendable, at least one three-bedroom home, PTAL 3 or above. The exception: amenity so poor that family use is unlikely and cannot reasonably be changed.

Brent: viewing or commenting on planning applications (search Brent’s planning register) · Brent Local Plan 2019–2041 (accessible version)

New flats under or beside a block

Can garages or a basement become a flat?

Thanet Lodge on Mapesbury Road shows how the answers can differ. In March 2006 Brent refused demolishing the block’s detached garages and converting its basement level into six flats, and the appeal was dismissed. In 2012 Brent refused turning four garages under the block into a one-bedroom flat, but the appeal was allowed, while three new flats proposed beside the block were dismissed on appeal. Brent’s Basement SPD adds that a basement forming a separate dwelling is unlikely to meet Building Regulations, Housing Act, environmental health or planning amenity standards.

Brent: viewing or commenting on planning applications (search Brent’s planning register) · Brent Basement SPD, adopted June 2017 (PDF)

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

What the work covers

What a flat refurbishment here usually involves

Sound through floors and walls

When Brent approved five flats in a Cavendish Road villa in 2015, it noted that rooms would mostly sit above or below rooms of the same use in the other flats, and still required details of how walls, ceilings and floors would be acoustically upgraded against noise. A refurbishment can follow the same logic: keep bedrooms over bedrooms where you can, and if a kitchen or bathroom moves, design the floor build-up for sound with Approved Document E and the lease’s rules on floor coverings in mind.

Brent: viewing or commenting on planning applications (search Brent’s planning register) · GOV.UK: Approved Document E, resistance to sound · LEASE: alterations and home improvements

Lower-ground flats

Granting a rear extension to a flat on Cavendish Road in September 2025, Brent noted that only part of the rear garden lay in surface water flood zone 3a, so no flood risk assessment was needed. For the Mowbray Road flats approved that July, the application’s design statement proposed water tanks and waterproofing against flood risk, with details of sustainable drainage secured by condition. Check your own address on GOV.UK’s flood service, and plan waterproofing, damp and ventilation together.

Brent: viewing or commenting on planning applications (search Brent’s planning register) · Check long-term flood risk in England

Shared parts, services and the entrance

Most flat refurbishments touch something shared: the stack, the rising main, the gas or electricity supply, the entrance door or the stair used for deliveries. The lease usually says what belongs to the flat and what to the building, and the landlord’s written consent is commonly needed for alterations. Agree how materials and waste will cross the common parts, protect them during the work, and keep the flat’s entrance door able to close on its own.

LEASE: alterations and home improvements

How we work

How we run a Brondesbury Park flat refurbishment

  1. First visit

    We see the flat, then the entrance, stairs or lift that serve it.

  2. Lease and consents

    We go through the lease’s consent requirements with you and the managing agent at the start.

  3. Survey and design

    Drainage and services are traced on site. Our own architects and structural engineers design the layout and any structural change around those routes, and any new external vent or window is checked for planning.

  4. Price and contract

    A fixed written price and a JCT contract follow the survey, scope and specification. The price names its allowances and exclusions, with consent fees and any common-parts work shown separately.

  5. Working in the building

    Common parts are protected and their condition recorded; deliveries keep to the building’s rules, and noisy work to those rules and the council’s permitted hours; key decisions go to a director.

  6. Handover

    Commissioning, drawings, certificates and any managing-agent close-out. Completed work carries a 12-month defects-rectification period under the JCT contract terms.

Real projects, clearly located

Examples of our flat refurbishment work elsewhere in London

None of these projects is in Brondesbury 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. Name the building and who manages it

    Tell us whether the flat is in a purpose-built block, a divided villa or Christchurch Court, and give the building’s name if it has one. Say who holds the freehold or manages the building, and whether you know it to be listed, locally listed or in a conservation area.

  2. Look up the building’s planning history

    Search Brent’s planning register by street and by the building’s name. Decisions on other flats in the same block, above all about windows and roofs, show what Brent has accepted there and at what date. Send any consents, licences or completion certificates you hold for earlier work in your own flat.

  3. Describe what lies above and below

    Say which floor the flat is on and what is above and below it: another flat, a shop, a garden or the ground. Note where bathrooms and kitchens sit in the flats next to yours, because moving a wet room over someone’s bedroom raises a sound question as well as a drainage one.

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

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Questions before you begin

Flat refurbishment in Brondesbury Park: questions

What does work inside a Christchurch Court flat involve?

In April 2020, for one flat there, Brent granted aluminium-framed doors in place of two pairs of PVCu doors that a 2020 Brent officer report records as part of the 1989 conversion, finding their thinner profile more in keeping with the tracery window. It also accepted removing some stud partitions, which the report says date from 1989 and are of no special interest, to show more of the historic stone columns, with the new partitions lightweight and reversible. For your own flat, ask Brent’s Principal Heritage Officer before the design is fixed.

Brent: viewing or commenting on planning applications (search Brent’s planning register) · Brent Residential Extensions and Alterations SPD, January 2025 (PDF)

What if Brent Council is my landlord?

These rules are for Brent Council leaseholders only, not private or housing association blocks, and they sit on top of planning and building control. Brent’s examples of work needing its Landlord’s Consent include installing new windows, changing the internal layout, taking out walls, making new openings and building extensions. You apply online or by email, with plans; a surveyor may review them at the flat, and a reply can take longer than 10 working days. For alterations made without consent, Brent requires a retrospective application and warns that its fees are doubled.

Brent: leaseholder responsibilities, for Brent Council leaseholders

Is my block in the Brondesbury Conservation Area?

Check the address. Brent’s 2019 list of properties within the conservation area names Thanet Lodge with the Mapesbury Road houses, and Brent’s review of its conservation areas in 2024 added properties in Cavendish Road and Chatsworth Road to it. For the blocks on Willesden Lane, Tarranbrae and Marlow Court among them, look the address up on Brent’s map rather than relying on a neighbour’s answer. The Queen’s Park and Kensal Rise conservation areas nearby are covered on their own pages.

Brent Historic Environment Place-making Strategy appendices, May 2019 · Brent Cabinet report: Review of Brent’s Conservation Areas, 28 May 2024 (PDF) · Brent: listed buildings and conservation areas

Our building had uPVC windows approved before. Does that still guide us?

Not necessarily. In July 2022 Brent granted replacing all the timber sashes of a Staverton Road house divided into flats with matching uPVC windows, recording that it was not in a conservation area. The 2024 Willesden Green appraisal now describes houses on Staverton Road as part of that conservation area’s extension. Where the extension now applies, a decision made before it is no guide, so check the address and read how the appraisal describes the house before choosing new frames.

Brent: viewing or commenting on planning applications (search Brent’s planning register) · Willesden Green Conservation Area character appraisal, adopted 28 May 2024 (December 2024 revision)

Do I need the freeholder’s consent as well as Brent’s?

Usually. Many leases make alterations, and often windows, flooring and pipework, subject to the landlord’s written consent, and that is separate from planning permission, listed building consent and building control. Ask early for the managing agent’s requirements, which may include drawings, a method statement, insurance details and a surveyor’s fee. A consent from Brent does not give the freeholder’s consent, and the freeholder’s consent does not give Brent’s.

LEASE: alterations and home improvements

How much does a flat refurbishment cost in Brondesbury Park?

Guide rates in Brondesbury Park are £900–£1,700/sqm excluding VAT, with a full two-bedroom refurbishment typically between £60,000 and £110,000, over a 16–32 weeks programme. A written scope and site assessment come before any fixed price.

Book a free feasibility visit

Talk to us about your Brondesbury Park flat

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

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

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