Pettit's or Day's Mill Great Sampford · Essex · England

Pettit's or Day's Mill stood at Great Sampford and worked as a wind-powered smock corn mill. The surviving structure is the former base, now converted for domestic use. Windmill World identifies the site as the Great Sampford smock mill, and the Mills Archive records the octagonal base of the former smock mill.

The mill was part of the post-medieval and nineteenth-century wind-powered milling landscape of north-west Essex. Its working smock body has gone, leaving the base as the principal surviving evidence. Essex comparative survey work identifies the site as Pettit's or Day's Mill, Great Sampford, with the parish given as Great Sampford and the Essex Historic Environment Record number EHER 1567. The survey describes the building as privately owned, mainly in residential use, and well maintained.

The surviving base has been photographed repeatedly across the twentieth century. Photographic records identify the base on 20 August 1921, in September 1934, in 1972, in 1978 and again in 1985. These records show that the lower structure continued to survive after the upper smock, cap, sails and machinery had disappeared. The base now preserves the footprint and lower built form of a lost smock mill within the High Street area of Great Sampford.