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No. 1 Grosvenor Square, Mayfair W1K – Residences to Rent and Buy

A guide to No. 1 Grosvenor Square, the converted former Canadian Embassy in Mayfair.

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Residential Property Services in London
No. 1 Grosvenor Square, Mayfair W1K – Residences to Rent and Buy Residential Property Services in London

Updated October 2026 · Fraser Bond

Mayfair · W1K

No. 1 Grosvenor Square: 48 super-prime homes in the former Canadian Embassy

48apartments & townhouses
2021completed
25mpool
Spa& gym
In short: No. 1 Grosvenor Square is the conversion of the former Canadian Embassy (Macdonald House) into 48 apartments and townhouses, completed in 2021 by Lodha UK with EPR Architects and Eric Parry, and interiors by Yabu Pushelberg. Residents have a 25-metre pool, spa, gym, residents' lounge and a basement car stacker. Rentals and resales are rare and usually handled discreetly.
History

The former Canadian Embassy on Grosvenor Square, reimagined as homes.

Homes

48 apartments and townhouses, including a penthouse.

Amenities

25m pool, spa, gym, lounge and secure parking.

Location

Grosvenor Square, steps from Mount Street, Bond Street and Hyde Park.

Prime move-in cost calculator
Weekly rent–
Holding deposit (max 1 week)–
Tenancy deposit (5 weeks, or 6 if rent is £50k+ a year)–
Rent in advance (max 1 month)–
Total to move in–
Annual income typically needed–

Caps under the Tenant Fees Act 2019 and the Renters' Rights Act rules in force from 1 May 2026 (England). The holding deposit is usually credited towards the first rent or deposit.

  • Rental valuation based on current Mayfair evidence
  • Vetted tenants, including corporate lets
  • Full management and building liaison

How Fraser Bond helps

1
RegisterSize, budget, timing and must-haves.
2
AccessHomes at No. 1 Grosvenor Square and comparable buildings nearby, including off-market.
3
NegotiateRent, term, furnishings and start date.
4
Move inReferencing, inventory and a protected deposit.

Frequently asked questions

What was No. 1 Grosvenor Square before?

The Canadian Embassy, known as Macdonald House.

How many homes are there?

48 apartments and townhouses.

What amenities do residents have?

A 25m pool, spa, gym, residents' lounge and car stacker parking.

Interested in No. 1 Grosvenor Square?

Contact us for a discreet conversation about renting, buying or selling.

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Related guides

MayfairTwenty Grosvenor SquareMayfair77 MayfairMayfairThree Kings Yard
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