Office Sector

The first consideration when designing office washrooms is the number of people who will use the facility. The tables below will help you work out how many toilets, urinals and washbasins to include in office buildings.

The following recommendations are sourced from British Standard 6465-1:2006+A1:2009 – Sanitary Installations.

Female toilets

Number of persons at workNumber of toiletsNumber of washbasins
1 to 1511
6 to 1522
16 to 3033
31 to 4544
46 to 6055
61 to 7566
76 to 9077
91 to 10088

Above 100 persons require 8; plus 1 toilet and washbasin for every unit or fraction of a unit of 25 persons.

Male toilets

Number of persons at workNumber of toiletsNumber of urinalsNumber of washbasins
1 to 15111
16 to 30212
31 to 45222
46 to 60323
61 to 75333
76 to 90434
91 to 100444

Every male toilet should have at least one WC. Considerations should be given to the provision of privacy screens between urinals.

Above 100 persons require 4; plus 1 toilet, urinal and washbasin for every unit or fraction of a unit of 50 persons.

Toilets for Offices

Learn More - Toilet Cubicle Sizes

Washbasins and Taps

Office Urinals

Hand Dryers