The Westminster and Middlesex Commission of Sewers was established in 1596 under the 1531 Statute of Sewers.
Its area was defined by the (47 Geo. 3 Sess. 1. c. vii), and prior to that by various letters patent.
In 1811 the commissioners leased 1 Greek Street, Soho, as their offices.
It was absorbed by the Metropolitan Commission of Sewers (which took over the Greek Street offices) on 1 January 1849.
Records are kept at the London Metropolitan Archives.