Technical Booklet H Stairs Ramps Guarding and Protection from Impact·Page 27·3.17
Landing provision and dimensions
Landings must be provided at the top and bottom of every flight with minimum width equal to the stair width and specific going dimensions for private and common stairs.
A landing should be provided at the top and bottom of every flight. The width of a landing should be not less than the width of the stair. The going of a landing should be not less than –
(a) in a private stair, the width of the flight; and
(b) in a common stair in a block of dwellings, 1200 mm clear of any door swing onto them.
Part of a floor may be considered as a landing.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet H - Stairs Ramps Guarding and Protection from Impact.pdf