
Premium construction and renovation in Mayfair — extensions, loft and basement conversions, kitchens, bathrooms and full refurbishments, managed end to end from our Harefield base.
Mayfair sits about an hour from our Harefield base, and we work across the W1 streets behind Grosvenor, Berkeley and Hanover Squares, along Mount Street and through the wider Mayfair Conservation Area. Much of our work here is quiet, ongoing property maintenance for prime and diplomatic occupiers, alongside basement conversions and the restoration of slate and lead roofs on protected Georgian frontages. These are demanding homes that ask for a steady hand and discretion, and we run each job to a standard that suits the address.
Almost nothing in Mayfair proceeds without consent. We handle planning and listed-building applications with Westminster City Council, including its mandatory pre-application consultation, and we work within the Mayfair Neighbourhood Plan. That means engaging the conservation officers early, setting out the work properly, and managing party-wall matters in tight terraces before anyone lifts a tool.

We tailor every project to the homes, ground and planning context of Mayfair — here's what that means in practice.
What sets us apart in Mayfair isn't a sales pitch — it's knowing the homes, the ground and the planning here, and building accordingly.
Westminster runs the strictest planning controls in our catchment, with mandatory pre-application consultation and listed-building consent on most work, and we manage that process from the start.
We restore sash windows, cornicing, slate and lead roofs on Mayfair's grand four- and five-storey townhouses without disturbing the protected facade.
We form basement conversions in London Clay and Thames terrace gravels, with the party-wall management that dense Mayfair terraces demand.
We carry out ongoing maintenance and diplomatic-grade M&E and services quietly, to the discretion that prime and embassy occupiers expect.
One firm for every part of your project, across Mayfair and the surrounding area.



Yes. Mayfair is within our core coverage across West London and the Home Counties, and we take on extension, conversion, renovation and maintenance projects there regularly.
We're based in Harefield, within easy reach of Mayfair. We cover Mayfair and the surrounding area as standard.
Yes — we prepare and manage planning and building-regulations applications with Westminster City Council on your behalf, as part of our design-and-build service.
Yes. Once we've discussed your project we're happy to share references and examples of comparable work in and around Mayfair.
Tell us what you have in mind and we'll arrange a survey and a clear, written quote.