Flat renovation
and refurbishment
in Belgravia, SW1X
Architects, Engineers, Surveyors & Builders Under One Roof.
One Studio. One Contract. One Team.
Independent surveying by our sister practice, Hampstead Chartered Surveyors (RICS Firm No. 923064)Belgravia's flats sit in the stuccoed terraces Thomas Cubitt and Thomas Cundy laid out in the 1820s and in apartment buildings such as Greville House and Thorburn House, where we have worked. The lease, any Grosvenor estate requirement and listed building consent can all reach the same room, so we settle those three before the layout is fixed.
Three sets of rules a Belgravia flat can fall under
Start with the lease. LEASE, the leasehold advice service, explains that depending on its terms a leaseholder may need the landlord's permission before any alteration, even with planning permission or building regulations approval, and that a clause such as 'floors must be carpeted' can rule out a timber or laminate floor.
Then check whether Grosvenor's estate management scheme reaches the building. Grosvenor says its schemes require its consent, alongside other statutory permissions, for certain changes, and in Belgravia only that includes alterations to internal load-bearing walls. Its alterations guide is written for freehold owners, so in a flat the lease and the landlord remain the starting point.
Finally, listing. Westminster's conservation area guide records about 500 Belgravia properties listed Grade II and every property around Belgrave Square listed, most of them Grade I. Grosvenor notes that in a listed building you may need consent even for interior repairs, renewals or redecoration, and Westminster's City Plan Policy 44 sets out to protect original or significant detail and historic fabric.
Sources: LEASE: alterations and home improvements, Grosvenor: Belgravia and Mayfair management schemes, Westminster City Council: Belgravia conservation area mini guide, Westminster City Plan 2019-2040 (2026, adopted January 2026)
Stucco terraces, red brick fringes and the flats inside them
The 2013 draft conservation area audit, quoted in the Belgravia Neighbourhood Plan that Westminster made on 7 March 2024, finds the area's character in opulent cream stucco terraces, spacious streets and verdant garden squares.
Where a flat occupies a floor of one of those terrace houses, the original staircase usually serves as the common stair, and its protection is agreed with the freeholder before any materials come in.
On the north-west and south-eastern fringes, in the parts of the Albert Gate and Grosvenor Gardens conservation areas inside the neighbourhood area, the plan describes mostly grand and ornate late Victorian buildings in stone or red brick. A flat in one of those buildings is surveyed on its own terms.
The plan notes that when an owner or tenant changes it is common for a house to be totally refurbished, including a full strip-out and replacement of every kitchen and bathroom, and that such work can cause considerable nuisance to neighbours even when it needs no planning permission. In a shared building that nuisance falls on every other floor.
Where a refurbishment does need a planning application, Policy BEL4 asks it to show how noise, dust and vibration affecting neighbouring properties will be minimised and mitigated, and the plan asks owners to consult residents, businesses and property owners nearby before they apply.
Policy BEL2 encourages sensitive energy efficiency retrofits in listed buildings and conservation areas, and the plan's Sustainability Charter asks for insulation against summer heat as well as winter cold and for rooms that can be naturally ventilated, with windows that open fully.
Inside the flat we upgrade the floor to the flat below for sound, renew wiring and pipework within the demise, and use lime-based plaster where the walls are original so the fabric can continue to breathe.
Sources: Belgravia Neighbourhood Plan 2023-2040, Adoption Version (March 2024), published by Westminster City Council, Westminster City Council: Belgravia Neighbourhood Plan
Getting materials to a Belgravia flat
Westminster needs 10 working days' notice to suspend a parking bay and adds a short-notice fee to requests made within 10 calendar days of the start date. Bays can be suspended for skip delivery and for building works, so we book them with the delivery programme rather than the week before.
Scaffolding, hoardings and any skip placed on the highway each need a separate council licence before work starts, and the council's Code of Construction Practice asks for care before a skip or heavy equipment stands over a vault beneath the pavement.
Sources: Westminster City Council: parking bay suspensions, Westminster City Council: Code of Construction Practice (May 2026)
How a Belgravia flat project runs
We begin with a feasibility visit and a measured survey of the flat, then read the lease and title with you to see which consents apply. Our in-house architects draw the layout, services and floor build-up, and where a wall or floor is structural our in-house structural engineers design the change.
Applications go to the landlord or managing agent, to Grosvenor where its scheme reaches the building, and to Westminster where listing or planning requires it. Building starts once each consent is in hand, on the design and site programme agreed with you at quotation.
Belgravia flat refurbishment: questions
Does Grosvenor have to approve work inside a Belgravia flat?
It depends on the building and the lease. Grosvenor's estate management schemes require its consent for certain changes, and in Belgravia that includes alterations to internal load-bearing walls, while a new kitchen or bathroom on the existing plumbing, electrical and gas connections does not need it. The lease may still require the landlord's permission.
Is the inside of a listed Belgravia flat protected?
Consent can reach beyond the facade. Grosvenor notes that in a listed building you may need consent for interior repairs, renewals or redecoration, and about 500 Belgravia properties are listed Grade II, so we check the list entry for the building before drawing anything.
Can I lay a timber floor in a Belgravia flat?
Only if the lease allows it. LEASE gives the example of a clause requiring floors to be carpeted, which would prevent a wooden or laminate floor even where other alterations are permitted, so we read the flooring clause before the floor is specified.
When can builders work in a Belgravia flat?
Westminster allows building work from 8am to 6pm on weekdays and 8am to 1pm on Saturdays, with no noisy work on Sundays or bank holidays unless special permission is granted. Its Code of Construction Practice also sets lower noise thresholds on Saturdays.
Can I add air conditioning to a Belgravia flat?
It needs several permissions. Where Grosvenor's scheme applies, its consent covers air conditioning, comfort cooling and any other external plant; a lease may require the landlord's permission as well; and the Neighbourhood Plan's Sustainability Charter asks for designs that reduce the need for air-conditioning. We look at shading, insulation and ventilation first, and propose cooling only where those fall short.
How much does a flat refurbishment cost in Belgravia?
For a Belgravia flat, the freeholder's terms matter as much as the finishes: the licence to alter from Grosvenor or the building's landlord, any managing agent's rules on access and working hours, floor construction between flats, and whether original plaster and joinery are listed. Those points change the scope more than room size does. After a feasibility visit we agree the scope and specification with you and provide a written quotation.
Sources: Grosvenor: Belgravia and Mayfair management schemes, LEASE: alterations and home improvements, Westminster City Council: Belgravia conservation area mini guide, Westminster City Council: noise problems we can investigate, Westminster City Council: Code of Construction Practice (May 2026), Belgravia Neighbourhood Plan 2023-2040, Adoption Version (March 2024), published by Westminster City Council
Belgravia flats we have refurbished
Rooms and elevations typical of Belgravia
Design, joinery and the build, under one contract in Belgravia
The same team stays with the project from the first visit to handover. Our in-house architects, designers and structural engineers draw and specify the work. Master joiners make the fitted furniture. Building Regulations approval comes from the building control body appointed for the project. Independent surveying is a separate appointment: Hampstead Chartered Surveyors & Building Consultancy, our RICS-regulated sister practice, is a separate firm that a homeowner instructs directly. One JCT contract covers the building work. Electrical and gas work is carried out by appropriately registered engineers. Completed structural work carries a 12-month aftercare/defects period. Cover is £5M public liability, £10M employers' liability and contractors' all risks cover. Main office: 250 Finchley Road, Hampstead, London NW3 6DN. Central London client consultation address: 2 Eaton Gate, Belgravia, London SW1W 9BJ. Telephone 020 7101 3168.
Licence to alter · Independent surveying by our sister practice
What clients have said about the work
I would like to thank Ross and his team for their consistent commitment to quality and their unerring reliability.
We have worked with Ross and his company many times. They are extremely professional and hardworking individuals who can work under any circumstances. There was no variation to the works.
Verified Planning, Estate & Conservation Sources
- LEASE: alterations and home improvements
- Grosvenor: Belgravia and Mayfair management schemes
- Westminster City Council: Belgravia conservation area mini guide
- Westminster City Plan 2019-2040 (2026, adopted January 2026)
- Belgravia Neighbourhood Plan 2023-2040, Adoption Version (March 2024), published by Westminster City Council
- Westminster City Council: Belgravia Neighbourhood Plan
- Westminster City Council: parking bay suspensions
- Westminster City Council: Code of Construction Practice (May 2026)
Related pages
Book a consultation
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.







