Portable toilets play a bigger role than many people realise. When organising a public event, managing a construction site, or running a long-term project in a remote location, choosing the right portable toilet setup is essential for comfort, hygiene, and compliance.
At Castle Portable Buildings, we work with event organisers, builders, councils, and businesses across New Zealand to supply reliable portable toilet solutions that suit both short-term and long-term needs. This guide walks through the key factors to consider so you can choose the right portable toilets for your site or event and avoid common mistakes.

Portable toilets play a bigger role than many people realise. When organising a public event, managing a construction site, or running a long-term project in a remote location, choosing the right portable toilet setup is essential for comfort, hygiene, and compliance.
At Castle Portable Buildings, we work with event organisers, builders, councils, and businesses across New Zealand to supply reliable portable toilet solutions that suit both short-term and long-term needs. This guide walks through the key factors to consider so you can choose the right portable toilets for your site or event and avoid common mistakes.
The first step is understanding how and where the toilets will be used. Events and worksites have very different requirements.
For events, toilets are usually in place for a short period but may need to handle high foot traffic in a short time frame. Comfort, cleanliness, and accessibility are often the top priorities.
For construction sites or industrial worksites, toilets are often required for longer periods. Durability, servicing schedules, and compliance with workplace requirements become more important.
Before making a decision, ask yourself:
Standard portable “Toi Toi” toilets are suitable for most construction sites and small events. They are compact, easy to place, and designed for regular servicing.
For higher-use environments or longer-term sites, portable toilet blocks offer improved capacity and durability. These are often preferred for busy worksites or multi-day events where reliability is critical.
Accessible toilet units are essential for public events and many workplaces. They provide wider access, handrails, and additional internal space to support mobility needs.
Castle Portable Buildings offers a range of options, including portable toilet blocks designed for high-use environments and longer deployments.
One of the most common mistakes with portable toilets is underestimating how many are needed. Too few toilets leads to queues, hygiene issues, and frustrated users.
For events, toilet numbers depend on:
For worksites, requirements depend on crew size, shift length, and site layout.
Of-course it’s better to have more capacity than falling short. Our team can help you calculate the right number of units based on your specific site or event if you doing it for the first time.
Portable toilets are only as good as the servicing behind them. Regular cleaning, waste removal, and restocking of consumables are essential for hygiene and user comfort.
When planning your hire, consider:
Longer-term worksites usually require scheduled weekly servicing, while events may need multiple services during peak periods. Castle Portable Buildings manages servicing as part of the hire process so you do not have to worry about logistics.
If your site also requires washing facilities, you can combine toilets with portable showers for a complete amenity solution.
Where the toilets are placed matters just as much as the type of unit.
Toilets should be:
For construction sites, toilets should be located close enough to work areas to be practical, while still allowing safe access for cleaning and maintenance.
For events, placement should balance convenience with discretion, ensuring toilets are easy to find but do not disrupt the flow of the event.
Worksites in New Zealand must meet health and safety requirements for worker amenities. Portable toilets must be clean, functional, and appropriate for the number of workers on site.
Public events also have expectations around accessibility and hygiene. Failing to meet these standards can lead to complaints or compliance issues.
Castle Portable Buildings supplies well-maintained units that meet expected standards and are suitable for both commercial and public environments. For longer-term sites, we often supply toilets alongside site office hire and other portable facilities to create a full site setup.
Many clients find it easier to manage their site by sourcing all portable facilities from one provider. Toilets often work best when paired with additional units such as lunchrooms, change rooms, or offices.
Castle Portable Buildings can supply integrated solutions that include toilets, showers, and portable cabins, reducing the need to coordinate multiple suppliers.
Choosing the right portable toilet blocks is easier when you have experienced support. At Castle Portable Buildings, we help clients across New Zealand select, deliver, and maintain portable toilet solutions that fit their needs.
We offer:
Portable toilets may not be the most glamorous part of an event or worksite, but getting them right makes a real difference. If you are unsure how many units you need, what type is best, we are here to help.
Get in touch with Castle Portable Buildings today to discuss your event or worksite. We will help you choose the right portable toilet solution and ensure everything runs smoothly from delivery to pickup.