Property investor and developer D2 Private has instructed Jones Lang LaSalle (JLL) to sell its freehold interest in a trophy West End asset at 11-12 St James's Square in London.

The Grade II listed building comprises 124,000 sq ft (11,500 m2) of office accommodation. Following the redevelopment undertaken by D2 Private in 2007, the building is multi-let and provides almost 10 years average unexpired term.

The building provides a rare combination of classical Georgian architecture and state-of-the-art open plan accommodation. It is let to a range of financial and professional tenants on long leases.

Julian Sandbach, head of West End Investment at JLL said: 'It is rare that a freehold on garden square of this quality comes to the market in the West End, particularly offering the security of income provided by 11-12 St James's Square.'

He added: 'The building achieved some of the highest rents in the West End, which is testament to its quality and prestige, and we expect to see very strong interest in the asset from both domestic and overseas investors.'