# The Building Societies (Residential Use) Order 1987, Paragraph 3


The features to be included when measuring the area of a floor in accordance with paragraph 2 are:
(a) perimeter wall thicknesses and external projections;
(b) areas occupied by internal walls and partitions;
(c) columns, piers, chimney-breasts, stairwells, lift-wells and similar structures;
(d) lift rooms, plant rooms, tank rooms and fuel stores;
(e) garages (whether detached or not) and open-sided covered parking areas; and
(f) outside water or earth closets.

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Source: https://www.legislation.gov.uk/uksi/1987/1671/schedule/paragraph/3 (the official version)
Page: https://openlegislation.uk/building-societies-residential-use-order-1987/schedule/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.