Thomas Allason

Thomas Allason (1790–1852) was an English architect,[1] surveyor and landscaper, noted in particular for his work at Connaught Square and the Ladbroke Estate in Kensington.

He claimed to have been the first to spot entasis on the shafts of Greek columns, although Charles Robert Cockerell (1788–1863) and Carl Haller von Hallerstein (1774–1817), whom Allason had met while in Athens, had also observed this.

In 1821 James Weller Ladbroke inherited his family's then largely rural estate on the western edges of London, and soon set about planning its development.

The plan marks the genesis of his most enduring idea - the creation of large private communal gardens enclosed by terraces and/or crescents of houses.

[7] Nonetheless, eventually around fifteen of these communal garden squares would be built, and they continue to contribute to the unique character of Notting Hill to this day.

Engraving by Thomas Allason; Picturesque Views Of The Antiquities Of Pola , published by John Murray in 1819.
Allason's 1823 plan for the development of the Ladbroke Estate , consisting of a large central circus with radiating streets and garden squares, or "paddocks".