Open plan living, dining and kitchen with tall bay windows.

Architecture in Mayfair.

Mayfair · W1 · Mayfair apartmentCompleted work, photograph

Architecture for Mayfair apartments and mews houses. Space here is rearranged, rarely added.

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Mayfair, rearranged rather than enlarged.

W1
Georgian townhouses, now mostly apartments
Dec 2019
The Mayfair Neighbourhood Plan was made
Policy 43
Reuse is supported in principle

NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle architecture and planning drawings in Mayfair W1, under one contract. The calculator gives your own range in a minute, by scope and finish. Call 020 7731 6841, and a budget estimate typically follows within seven days.

Mayfair’s Georgian townhouses mostly hold apartments now, often above shops. A whole house is unusual. Mews houses sit behind the main streets.

So architecture here rearranges space rather than adding it. Garden rooms are not the pattern. Extensions mean mews houses and lateral works.

Westminster backs reuse first, under City Plan Policy 43. Policy 44 asks listed buildings to keep their period detail.

The Mayfair Neighbourhood Plan, made in December 2019, sits beside both. Where Grosvenor owns the freehold, its licence is needed as well.

Our Mayfair apartment was interior design and fit-out, not structural work. Living, dining and kitchen share one room under tall bay windows.

What the council allows in Mayfair.

Council
City of Westminster, alongside the Mayfair Neighbourhood Plan made in December 2019.
Retrofit first
City Plan Policy 43. Refurbishing and reusing a building is supported in principle.
Listed buildings
Policy 44 asks for period detail to be kept, or restored where lost.
The estate
The Grosvenor estate owns much of Mayfair. Its licence often sits beside the council’s consent.
Flats
An apartment has no householder permitted development rights. External changes need planning.

Source: Westminster’s City Plan 2026, Policies 43 and 44, and the Mayfair Neighbourhood Plan. Read on 3 October 2026. Policies change, so we read them again for your address.

Our work in and near W1.

Living room with velvet sofas and framed wildlife photographs.

Mayfair·Apartment

Mayfair apartment

A Mayfair apartment, fitted out under tall bay windows. Interior design and fit-out rather than architecture.

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Drawing room with ornate Georgian plasterwork, a marble chimneypiece and tall sash windows.

Marylebone·Apartment

Marylebone listed apartment

A Grade II listed apartment nearby in Marylebone, its period fabric kept.

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Completed work, photographs

What architectural design costs in Mayfair.

Architecture is priced per project, from the actual scope.

Leases, licences and listing all shape the fee.

Open the calculatorThe 2026 cost guide

Can a Mayfair house take a rear extension?

Rarely in the usual sense. Few Mayfair buildings have gardens to grow into.

Extensions here mean mews houses and lateral works instead.

What does City Plan Policy 43 mean for a Mayfair redesign?

It supports refurbishing and reusing a building in principle.

So the design starts from the structure already standing.

Who consents to a Mayfair mews house redesign?

Westminster, for planning and any listed building consent.

Where Grosvenor is freeholder, its licence sits alongside.

Is your Mayfair project an architecture job?

No. It was an interior design and fit-out of 1,500 sq ft.

Cochrane Bespoke made the study, kitchen and larder joinery.

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What is the work?

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