Mayfair · Hanover Square to Grosvenor Square
Twenty Grosvenor Square, A Four Seasons Residence
The residences
- The name licensed to this project and carried on the building. A brand is not a company: it holds no title, builds nothing and runs nothing.
- Four Seasons
- The business the brand comes from — hotel, fashion, design, automotive, restaurant, club, or a developer’s own name.
- Hotel
- How many separately titled homes this project sells, counting every kind it sells. Where it sells more than one kind, each is named and its own count given.
- 37
- The kinds of home offered — villas, condos, penthouses, lots — and how they break down. Not how many, and not what interest is sold.
- three, four and five bedroom apartments, 78–537 sq m
- The interest a buyer takes: whole ownership, a share of one residence, or a right to use it.
- Whole ownership
- Whether a hotel shares the site, the building is mixed-use, or it is residences only.
- Residences only, no hotel
- The published asking range or entry price.
- GBP from 5.5M
- When the project was first made public.
- The launch release states the development was announced in May 2013 without naming the act; no opened page carries a dated announcement, so no date is recorded.
- When its residences were first released for sale.
- No opened page states when the residences were first released for sale.
- When ground was broken on the site.
- No opened page states when construction began on the conversion of the former United States Naval headquarters.
- When the residences were handed over to buyers.
- 2019
3 fields not recorded
What the brand does · Master plan · Handover projected
Not recorded is a statement about this register: no sourced value is held for these. It is never a claim that anyone withheld them.
Who is behind it
- The company that runs properties under this project’s brand and sets the standards carried under it. It need not own the name — who owns it is the brand licensor.
- Four Seasons Hotels Ltd.
- The firm that runs the building day to day — staffing, maintenance, residents’ services.
- Four Seasons Hotels Ltd.residential services agreement; no hotel on the site
- The party that promotes the project and carries it through to delivery. May also hold title to part of it — being one does not make it the other.
- Finchatton
- The practice or individual who designed the building.
- Squire & Partners
- The practice or individual who designed the interiors.
- Finchattoninterior architecture, interior design, and furniture, fixtures and equipment
3 fields not recorded
Holds title to · Main contractor · Brand licensee
Not recorded is a statement about this register: no sourced value is held for these. It is never a claim that anyone withheld them.
How this project is structuredTwenty Grosvenor Square is the conversion of the former United States Naval headquarters in Europe into thirty-seven residences, developed by Finchatton with the Abu Dhabi Investment Council as its partner. Four Seasons services the residences and there is no hotel on the site. Squire & Partners was the architect and Finchatton designed the interiors.
Sources
www.prnewswire.com/news-releases/unveiling-twenty-gr…
17 Jul 2019Launch release: count, developer, architect, building managerAccessed 14 Aug 2026
valouran.com/portfolio/twenty-grosvenor-square
Developer portfolio record: partner, count, completion yearAccessed 14 Aug 2026
finchatton.com/portfolio/twenty-grosvenor-square-may…
Interior designer's own record: count and scopeAccessed 14 Aug 2026
1newhomes.com/twenty-grosvenor-square-london
Development database: address, prices, floor areasAccessed 14 Aug 2026