Loft Conversions in Belgravia, SW1X
Dormer, hip-to-gable and mansard loft conversions for houses in Belgravia: a bedroom and bathroom under the roof, designed and built by one team.
Covered under one contract
- Structural design and calculations
- Planning or lawful development certificate
- New staircase, dormer and roof windows
- Insulation, fire safety and building control
- En-suite designed and fitted
- Waterproofing with guarantee for basements
Loft Conversions in Belgravia.
A loft conversion adds a bedroom and bathroom without touching the garden, and in most of Belgravia it is the most cost-effective way to gain a floor. Which type suits your house depends on the roof: Victorian and Edwardian terraces usually take a rear dormer, 1930s semis with hipped roofs need a hip-to-gable conversion to make the space usable, and in conservation areas a mansard or rooflight scheme may be the only option.
We start by measuring the roof. About 2.2 metres from the top of the joists to the ridge is needed for a comfortable room; we check this at the first visit before anything is drawn. From there our architects design the layout and the stair, our engineers design the new floor and any steelwork, and our team builds it with the house occupied throughout.
Most lofts are permitted development within the 40 or 50 cubic metre allowance, with the dormer at the rear. Flats, listed buildings and streets with Article 4 directions need a planning application, and every loft needs building regulations approval for the structure, fire escape and insulation. We manage all of it.
- Area
- Belgravia, SW1X · SW1W
- Council
- City of Westminster
- Housing
- Grade II listed white stucco terraces and squares by Thomas Cubitt, mews houses, embassies converted back to homes, and apartments
- Transport
- Sloane Square, Victoria, Hyde Park Corner
- Loft, on site
- 8 to 12 weeks
- Headroom needed
- About 2.2 m at the ridge
- Consent
- Often permitted development for lofts
Belgravia: the houses and the planning rules.
Belgravia was built by Thomas Cubitt for the Grosvenor estate in the 1820s and 1830s and it has barely changed since: cream stucco terraces around Eaton Square, Belgrave Square and Chester Square, with cobbled mews behind. The whole district is a conservation area, most houses are listed, and the Grosvenor estate remains the freeholder of much of it.
Work here is nearly always to a listed building, which means listed building consent, a heritage statement and an approach that treats the historic fabric as the priority. Within that we fit kitchens, bathrooms, joinery and services to modern standards, and convert mews houses into complete homes.
The Belgravia Conservation Area covers the whole district, and the majority of the houses are Grade II or II* listed.
Westminster City Council
Westminster decides planning and listed building applications for the whole of Belgravia, with detailed conservation area guidance and long-standing policies on roof extensions and basements.
Grosvenor estate
Grosvenor's own consent is required for most alterations on the estate, with its own design guidance and surveyors.
Listed interiors
Cornices, staircases, chimneypieces and joinery are part of the listing; changes need consent and specialist trades.
Approvals for loft conversions in Belgravia.
Most loft conversions are permitted development within the 40 cubic metre allowance for a terrace or 50 for other houses, with the dormer at the rear. Conservation areas, flats and front dormers need a planning application, and every loft needs building regulations approval.
Westminster decides planning and listed building applications for the whole of Belgravia, with detailed conservation area guidance and long-standing policies on roof extensions and basements.
What loft conversions in Belgravia includes.
- Structural design and calculations
- Planning or lawful development certificate
- New staircase, dormer and roof windows
- Insulation, fire safety and building control
- En-suite designed and fitted
- Waterproofing with guarantee for basements
From site visit to handover.
- 01
Site visit & consultation
We visit, listen and measure. Brief, budget and constraints understood before any advice is given.
- 02
Design & itemised quote
Our architects and engineers draw the scheme, and from that we provide a transparent, itemised quotation for your approval.
- 03
Planning & approvals
Planning applications, building control and party wall matters handled for you.
- 04
Build, managed weekly
Our own trades, sequenced by a site manager. Progress reported every week.
- 05
Handover & aftercare
Joint snagging walk-through, documentation, and a guarantee on our workmanship.
Loft Conversions in Belgravia: your questions.
Is a loft conversion in Belgravia permitted development?
Often, provided the added volume is within 40 cubic metres for a terrace or 50 for other houses and the dormer is at the rear. Flats, listed buildings and streets with Article 4 directions need an application to the City of Westminster.
How much headroom do I need for a loft conversion?
About 2.2 metres from the top of the ceiling joists to the ridge. Victorian and Edwardian roofs usually have it; 1930s hipped roofs often need a hip-to-gable conversion to make the space usable. We measure at the first visit.
Which parts of Belgravia do you cover?
All of Belgravia and SW1X · SW1W, including Eaton Square, Chester Square, Belgrave Square, Elizabeth Street, Eaton Terrace, Chester Row, and the neighbouring districts. We are based in London and our teams work across central, north, north-west, west and south-west London.
Other services in Belgravia.
House Refurbishment in Belgravia
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Flat Refurbishment in Belgravia
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House Extensions in Belgravia
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Structural Alterations in Belgravia
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Basement Conversions in Belgravia
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Kitchen Renovation in Belgravia
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Bathroom Renovation in Belgravia
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Bespoke Joinery & Fitted Furniture in Belgravia
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Architectural & Interior Design in Belgravia
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Planning Permission & Building Regulations in Belgravia
Read moreLoft Conversions across London.
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We will visit, listen and explain what is possible for your property and how it would be approved. No pressure, no sales pitch.