Janine Stone & Co — Since 1987
Mayfair Interior Designers & Architects
Landmark residences and lateral apartments — discretion, and the very highest finish.
Begin a ConversationMayfair
A single studio for Mayfair homes
Mayfair demands discretion and the very highest finish. We design and deliver landmark Mayfair residences — from lateral apartments to whole townhouses — interiors, architecture and construction as one.
One Studio, Three Disciplines
Interiors, architecture and construction
Interior Design
Whole-house and single-room schemes, bespoke to the property and the way you live.
Explore interior design →Residential Architecture
Spatial reconfiguration, extension and listed or period consents, handled in-house.
Explore architecture →Construction Management
Open-book cost control and single-point accountability through to completion.
Explore construction →Buy & Refurbish — Mayfair
Mayfair homes currently for sale
A selection of Mayfair homes we have identified for their design and refurbishment potential. Through our Clarity pre-purchase service we can show you what each could become before you commit.
Hereford House, Mayfair, W1K
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Grosvenor Square, Mayfair, W1K
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South Audley Street, Mayfair, W1K
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Hanover Square, Mayfair, W1S
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50 Upper Brook Street, Mayfair, W1K
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Hill Street, Mayfair
View property →Our Portfolio — Completed Work
Selected prime London projects
A few of the prime London homes we have designed, restored and built. See the full interior design portfolio.
Common Questions
Mayfair Interior Designers & Architects, answered
Do you handle Grosvenor Estate consents in Mayfair?
Much of Mayfair is held under the Grosvenor Estate, with its own consent and specification requirements alongside Westminster's rules. We manage these consents within the project programme.
Do you design lateral apartments in Mayfair?
Yes. Many of Mayfair's finest homes are lateral apartments within mansion blocks; we reconfigure them and deliver the highest level of finish.
How do you protect privacy and discretion?
Discretion is central to how we work. We can operate under confidentiality agreements and limit publication of any project at the client's request.
Planning a Mayfair project?
Whether you are buying, refurbishing or rebuilding, we would be glad to discuss how we can help create an exceptional Mayfair home.
Contact the Studio