Devonshire House

Devonshire House in Piccadilly was the London residence of the Dukes of Devonshire in the 18th and 19th centuries. It was built for William Cavendish, 3rd Duke of Devonshire in the Palladian style, to designs by William Kent. Completed circa 1740, empty after World War I, it was demolished in 1924.

Many of Britain's great peers maintained large London houses that bore their names. As a ducal house (only in mainland Europe were such houses referred to as palaces), Devonshire House was one of the largest and grandest, ranking alongside Burlington House, Montague House, Lansdowne House, Londonderry House, Northumberland House, and Norfolk House. All of these have been long demolished, except Burlington and Lansdowne, both of which have been substantially altered.

Today the site is occupied by an office building known as Devonshire House.

Devonshire House was built on the site of Berkeley House, which John, Lord Berkeley, erected at a cost of over £30,000 on his return from his tenure of the viceroyalty of Ireland; it was constructed from 1665 to 1673. The house was later occupied by Barbara Villiers, Duchess of Cleveland, a mistress of Charles II.

The house, a classical mansion built by Hugh May, had been purchased by William Cavendish, 1st Duke of Devonshire in 1696 and subsequently renamed Devonshire House. As part of the agreement, Lord Berkeley undertook not to build on that part of the land he retained that lay directly behind the house, so keeping the Duke's view. This agreement was continued when the Berkeley land was developed after 1730, and the gardens of Berkeley Square are the termination of that undeveloped strip; to the south the gardens of Lansdowne House were originally also part of it.

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