Bedroom with a wide headboard and a stone bathroom beyond.

Loft conversions in Pimlico.

Belgravia · SW1 · Belgravia apartment, full refurbishmentCompleted work, photograph

Most Pimlico rooflines are still unbroken. That usually rules a new storey out.

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A Pimlico loft, is often a no.

Unbroken
Most terrace roof lines survive intact
One estate
Laid out in Belgravia’s era
SW1V
Stucco terraces, now mostly flats

NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle loft conversions, dormers and mansards in Pimlico SW1V, under one contract. A main dormer loft typically runs £90k to £140k. A mansard loft runs £140k to £220k. Call 020 7731 6841, and a budget estimate typically follows within seven days.

Pimlico was planned as one estate, in the same era as Belgravia. Its stucco terraces face garden squares.

Most survive with unbroken roof lines. Westminster refuses roof extensions on complete terraces like these.

Most houses are now flats, too. Upper flats have no permitted development rights.

Some terraces already carry a run of roof storeys. There a mansard can sometimes fill the gap.

Otherwise, the honest answer is to improve the top floor you already have.

What Westminster allows on a Pimlico roof.

Council
City of Westminster, whose City Plan was adopted in January 2026.
Conservation area
The Pimlico Conservation Area covers it. Roof permitted development does not apply.
Complete terraces
Roof extensions are refused where the terrace roof line is largely unaltered.
Group schemes
A coordinated design for a whole terrace may get more flexibility.
Upper flats
No householder permitted development rights. Roof work needs planning and the freeholder.

Source: Westminster’s conservation area summaries, with its City Plan of January 2026. Read on 25 October 2026. Policies change, so we read them again for your address.

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Completed work, photographs

What a loft conversion costs in Pimlico.

We give a price once the terrace shows a roof storey is possible.

Where it is not, we price the top floor refurbishment instead.

Fees, party wall costs, contingency and VAT are always added.

Open the calculatorThe 2026 cost guideCan I build it here?

Why are Pimlico roof extensions usually refused?

Most terraces keep a complete, unaltered roof line.

Westminster’s roof guide rules out extensions on terraces like these.

When could a Pimlico mansard be allowed?

Where the terrace already has several roof storeys, infill may work.

A coordinated design for the whole terrace can also help.

Is there an Article 4 direction on Pimlico houses?

None on minor house alterations names Pimlico.

The conservation area already removes roof permitted development.

Westminster’s map confirms each address.

What can a Pimlico top floor flat do instead of a loft?

Refurbish the existing rooms, with better light, storage and insulation.

Any roof change needs planning and the freeholder’s consent.

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