House renovation and refurbishment
in Belgravia's listed Cubitt terraces
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 grand streets are long stuccoed terraces of uniform height and classical detail, and the short streets leading to the squares are mainly brick houses with stuccoed ground floors. Most of these properties are listed and Grosvenor's estate scheme adds its own consent, so the scope is settled with both before the work is priced.
What Grosvenor's scheme covers in a Belgravia house
Grosvenor says its estate management schemes largely govern the repair and alteration of external load-bearing structures and the decoration of external surfaces, and in Belgravia alone, alterations to internal load-bearing walls too. Its consent is needed for extensions and basements, for replacing or altering windows, for works to walls and roofs including external pipework, for roof terraces and for air conditioning or other external plant.
It sets strict requirements on the colour and type of external paint, expects a roof terrace to suit occasional enjoyment rather than become a permanent outdoor room, and may phase or delay approval to limit disturbance to neighbours, particularly in the mews. A new kitchen, bathroom or cupboards on the existing connections does not need its consent.
Grosvenor's guide is written for freehold owners, and its consent sits alongside, not instead of, Westminster's planning and listed building consents.
Source: Grosvenor: Belgravia and Mayfair management schemes
Squares, views and the Wilton Row policy
Belgrave Square, Chesham Place, Chester Square, Eaton Square and Wilton Crescent are protected by the London Squares Act 1931, and Belgrave Square and Eaton Square are Grade II registered historic gardens. A wide strip of southern Belgravia lies inside the strategic view from King Henry's Mound to St Paul's Cathedral, so a roof addition there is checked against it.
Westminster's City Plan supports roof extensions in principle where they do not harm heritage assets, but on a terrace whose roofline is still unbroken it expects one consistent design across the terrace. The council's policy for Wilton Row and Old Barracks Yard restricts alterations to front elevations and roofs.
Sources: Westminster City Council: Belgravia conservation area mini guide, Westminster City Plan 2019-2040 (2026, adopted January 2026)
How Belgravia's houses were built, and why it shapes a refurbishment
The Belgravia Neighbourhood Plan explains that houses were classed as first, second or third rate under a 1774 Building Act, each rate with its own code for foundations, external and party walls, and that Belgravia was built to those strict principles.
In the roads beside the principal squares, many houses are only 18ft wide and five or six storeys tall, and the plan says terrace houses depend on the integrity and support of the whole terrace for their stability, which makes them unsuited to extensive remodelling.
The plan adds that later Victorian and Edwardian houses tend to be more robust than the Georgian-era buildings that make up most of Belgravia. A new opening in a spine wall, a lift or a rebuilt stair is tested against the house's actual construction before the layout is fixed.
Proportion matters too. The Forum will oppose enlargements it considers disproportionate, and the plan points out that while listing generally protects the street front, distortion is more likely at the rear, where changes can be seen from side streets and by neighbours.
Where the refurbishment needs planning permission, Policy BEL4 asks for a plan to minimise noise, dust and vibration for the neighbouring houses, which we prepare with the structural engineer and the programme.
Source: Belgravia Neighbourhood Plan 2023-2040, Adoption Version (March 2024), published by Westminster City Council
Adding or deepening a basement in Belgravia
Westminster removed permitted development rights for basements across the whole city by an Article 4 direction that came into force on 31 July 2016, so a new basement needs planning permission. City Plan Policy 50 supports basements that stay under half of the garden, or reach no more than 4m from the house where the garden is 8m or less at its longest, and that keep at least a metre of soil and a 200mm drainage layer over the top.
The City Plan treats one storey of about 2.7m floor to ceiling below the lowest original floor as the appropriate depth, and in a listed house it asks that the basement does not unbalance the original hierarchy of rooms. Grosvenor sets its own limits: a storey of no more than 3.0m from slab to structural ceiling, no excavation below floors already under street level unless the ceiling is under 2,400mm, and a general presumption against basements in mews houses.
Any basement makes the job a Level 3 project under Westminster's Code of Construction Practice.
Sources: Westminster City Council: Article 4 Directions in Westminster, Westminster City Plan 2019-2040 (2026, adopted January 2026), Grosvenor: Belgravia and Mayfair management schemes, Westminster City Council: Code of Construction Practice (May 2026), Westminster City Council: noise problems we can investigate
How a Belgravia house project runs
We start with a feasibility visit and a survey of the house, then confirm the list entry, the Grosvenor position and any party wall the work touches; gov.uk guidance on the Party Wall etc. Act 1996 requires notice to adjoining owners in the way the Act sets down.
Our in-house architects prepare the drawings for listed building consent and planning, and our in-house structural engineers design any structural change. Work on site starts once the consents are in place, following the programme agreed when we quote.
Source: GOV.UK: Party Wall etc. Act 1996 guidance
Belgravia house refurbishment: questions
Do I need Grosvenor's consent to change walls inside my Belgravia house?
For load-bearing walls, yes: Grosvenor says that in Belgravia properties, changes to internal load-bearing walls need its consent. Its schemes otherwise largely govern external structures and surfaces, and a new kitchen or bathroom on existing connections is outside them, although listed building consent may still apply.
Can I build a basement under a Belgravia house?
Possibly, with planning permission, Grosvenor's consent and, for a listed house, listed building consent. Westminster supports basements that stay under half of the garden and are generally no deeper than one storey, and Grosvenor discourages basements in mews houses.
Can I repaint the front of my Belgravia house?
Check Grosvenor's rules first: it sets strict requirements on the colour and type of paint that can be used externally.
Can building work go on at weekends in Belgravia?
Saturday mornings only, from 8am to 1pm, and without demolition, excavation or piling unless Westminster has granted special permission. Noisy work on a Sunday or bank holiday also needs that permission, so heavy stages of a Belgravia house refurbishment are planned for weekdays.
How much does a house refurbishment cost in Belgravia?
A Belgravia house carries costs a plainer terrace does not. Listed stucco has to be repaired rather than renewed, structural changes need the evidence Westminster and the Grosvenor estate will ask for, party wall awards may be needed with neighbours on each side, and basements or lifts add their own engineering. Once a feasibility visit has established those points for your house, we agree the scope and specification and follow with a written quotation.
Sources: Grosvenor: Belgravia and Mayfair management schemes, Westminster City Council: Article 4 Directions in Westminster, Westminster City Plan 2019-2040 (2026, adopted January 2026), Westminster City Council: noise problems we can investigate
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
- Grosvenor: Belgravia and Mayfair management schemes
- Westminster City Council: Article 4 Directions in Westminster
- Westminster City Plan 2019-2040 (2026, adopted January 2026)
- Westminster City Council: Code of Construction Practice (May 2026)
- Westminster City Council: noise problems we can investigate
- Westminster City Council: Belgravia conservation area mini guide
- Belgravia Neighbourhood Plan 2023-2040, Adoption Version (March 2024), published by Westminster City Council
- GOV.UK: Party Wall etc. Act 1996 guidance
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