How many toilets on a building site?
Workplace safety rules set the minimum by crew size. Victoria has its own table.
1 per 15men on site, and 1 per 10 women (national rule)
Site toilet calculator
Count the most people on site at one time, including subcontractors.
Keep planning
Under the national construction code of practice it is one toilet per 15 men plus a urinal per 20, and one toilet per 10 women. Victoria has its own table. Enter who is on site to get the number, including enough extra that the tanks last between services.
The national rule
From the Code of Practice: Construction work, which applies in every state and territory except Victoria. “Or part of” means round up: 16 men need two toilets, not one.
| Workers of that sex | Toilets (men) | Urinals (men) | Toilets (women) |
|---|---|---|---|
| 5 | 1 | 0 | 1 |
| 10 | 1 | 1 | 1 |
| 15 | 1 | 1 | 2 |
| 20 | 2 | 1 | 2 |
| 30 | 2 | 2 | 3 |
| 45 | 3 | 3 | 5 |
| 60 | 4 | 3 | 6 |
| 100 | 7 | 5 | 10 |
Urinals aren't required with fewer than 10 men. With 10 or fewer workers in total and two or fewer of one sex, a single shared toilet is allowed.
Victoria
WorkSafe Victoria's compliance code uses its own scale, applied separately to men and women. For women, the urinal count becomes extra toilets.
| Workers | Toilets | Urinals |
|---|---|---|
| 1-5 | 1 | 0 |
| 6-10 | 1 | 1 |
| 11-20 | 2 | 2 |
| 21-35 | 3 | 4 |
| 36-50 | 4 | 6 |
| 51-75 | 5 | 7 |
| 76-100 | 6 | 8 |
Over 100: one more toilet and urinal for every 20 extra men (two toilets per 20 extra women), then per 35 above 200.
What else the rules ask for
- Hand washing next to the toilets, with soap and a way to dry hands. Sanitiser alone doesn't count.
- A lockable door, a seat with a lid, light and ventilation.
- Toilets on the site or right beside it, with safe access.
- Regular servicing. On a busy site, checks may be needed several times a day.
Servicing and tank size
The legal minimum doesn't account for how fast a tank fills. One hire company's rule of thumb: with weekly servicing, allow one toilet per 10 workers; with fortnightly servicing, one per 5, and don't stretch to fortnightly past 20 workers. The calculator uses whichever number is higher.
Hosting an event instead? Work out toilets for your guests.