James Weller Ladbroke

James Weller Ladbroke (died 16 March 1847) was a nineteenth-century landowner and the principal developer of the Ladbroke Estate, a substantial parcel of land in Notting Hill, London, England. Many streets in Notting Hill still bear the Ladbroke name today, including Ladbroke Grove and Ladbroke Square, and the former Ladbroke Estate is now a conservation area.

In the early nineteenth century the Ladbroke family were the principal landowners in Kensington, then a largely rural area on the western edges of London. The Ladbroke Estate was located north of the Uxbridge Road (now Notting Hill Gate and Holland Park Avenue), and development of the land began in 1821, continuing until the 1870s. Around six architects and many more property speculators were involved in developing the final layout of the area.

In the late eighteenth century the estate had been owned by Richard Ladbroke of Tadworth Court, Surrey. He died childless, and around 1821 his land passed to his nephew James Weller, who assumed the name Ladbroke in order to be able to inherit. James Weller Ladbroke held the estate until his death in 1847, though the actual development of the land was carried out by a firm of City solicitors, Smith, Bayley (known as Bayley and Janson after 1836), working in conjunction with the architect, landscaper and surveyor Thomas Allason.

Under the terms of his uncle's will, James Weller Ladbroke could only grant leases of up to twenty-one years' duration. However, he and his advisers managed to obtain power by means of a private Act of Parliament of 1821 to grant ninety-nine-year leases, and it was at this point that development began in earnest.

Allason's first task was to prepare a plan for the layout of the main portion of the estate, which was completed by 1823. The 1823 plan marks the genesis of Allason's most enduring idea—the creation of large private communal gardens enclosed by terraces and/or crescents of houses. Eventually around fifteen of these communal gardens would be built, and they continue to define the character of Notting Hill to this day.

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