How to Convert Your Van into a Self-Contained Campervan©
How to Convert Your Van into a Self-Contained Campervan

How to Convert Your Van into a Self-Contained Campervan


Tips to Turn Your Van into a Campervan (+ Get a Self-Containment Certification)

For the ability to freedom camp and have all your living conveniences in one place while you’re travelling around New Zealand, it’s likely that you’ll want a self-contained campervan. However, you cannot reap the rewards of freedom camping until your vehicle is certified self-contained under the Self-Containment Standard NZS 5465:2001. If you have a van that you want to turn into a campervan then this guide will give you some top tips to convert your van into a self-contained campervan!

These self-contained campervan conversion tips apply for those with a compact van, such as a Nissan Vanette or Toyota Hiace, that will be able to sleep two people. For other model suggestions, see What Model of Car or Campervan to Buy for Travelling New Zealand. Follow these tips to make sure your self-containment modifications pass their self-containment inspection, as outlined in How to Get Your Campervan Certified Self-Contained!

A Checklist of Requirements a Campervan Needs to Be Certified Self-Contained

The tips for converting your van into a self-contained campervan go over how to make sure your van is in top shape to meet the following requirements set by the Self-Containment Standard NZS 5465:2001.

  • Freshwater tanks: 12 L per person for three days
  • A sink via a smell trap/water trap connected to a watertight sealed waste water tank
  • Grey/black wastewater tank: 12 L per person for three days, vented and monitored if capacity is less than the fresh water tank
  • Evacuation hose (3 m for fitted tanks) or long enough to connect to a sealed portable tank
  • A rubbish bin with a lid
  • Toilet: Needs to be permanently fixed to the vehicle in accordance with the manufacturer’s instructions.

How to Convert Your Van into a Self-Contained Campervan©

DIY or Pay for the Installation?

If you have the skills, these modifications can be done yourself. Water tanks, sinks, pipes, etc. can be purchased in hardware stores like Mitre 10 and Bunnings Warehouse. Items like a cassette toilet (which needs to be permanently fixed to the van) can be purchased from specialised motorhome/RV stores.

Otherwise, we suggest employing a plumber, gasfitter or drainlayer that is registered as a self-containment certification issuing authority and/or a self-containment testing officer to install compliant systems for you. That way, they will install your water tanks and sinks to the correct requirements.

Find out more about issuing authorities and testing officers in How to Get Your Campervan Certified Self-Contained.

How to Convert Your Van into a Self-Contained Campervan© Backpacker Car

Or Get a Pre-Installed and Certified Self-Contained Campervan From Backpacker Car!

For camping vehicles already kitted out with the kitchen, fresh water and waste water tanks, portable toilet, a comfy double bed and more, check out the offering from Backpacker Car. Their certified self-contained campercars and campervans are all kitted out and can even be reserved before you arrive in New Zealand. At the end of your trip, the team offer a buyback scheme to even make the selling process a breeze. Check out their offering of cars and campervans for sale at©

Tips for Installing a Fresh Water Tank and Grey Waste Water Tank into a Campervan

Most vans are converted into a 2-berth campervan by having a double bed, a driver seat and a passenger seat. To meet the requirements for the self-containment certification for a 2-berth campervan you will need one 25 L fresh water tank and one 25 L waste water tank. That’s 12 L in each tank for each person for up to three days. Remember, tanks must connect to your fixed toilet as per the manufacturer’s instructions.

Fresh Water Tank

Use a 25 L narrow non-toxic opaque plastic can/canister as your fresh water tank. The fresh tank needs an opaque supply pipe to the sink and a vent. The fresh water tank with a tap can also be stored above the sink with the tap above the sink.

Grey Water Tank

The grey water should drain from the sink through a looped hose water trap and into one 25 L opaque plastic can/canister used for grey wastewater. The hose needs to be watertight and leak-proof. Additionally, a 6 mm vent pipe needs to be fitted to your waste water tank that rises above the bottom of the sink and terminates at the exterior of the van.©

Where to Store the Water Tanks?

In order to pass a self-certification inspection, both water tanks need to be secure when the vehicle is in motion. They can be stored in a secure cupboard or secured with a removable bungy cord. Additionally, they need to be easily accessible for emptying and filling without spillage.

You must be able to store the connecting hose and vent in a separate locker, container or sealable plastic bag for when they are disconnected from the tank.

Most vans store tanks under the sink or the freshwater tank can sometimes be above the sink. Note that some fixed toilets may require extensive plumbing and space under the vehicle for the black water tank.

Does Your Tank Need a Gauge?

If the level of the water can be seen through the tank then the tank does not require a gauge to measure the water level.

How to Convert Your Van into a Self-Contained Campervan© JUCY Group

Tips for Installing a Toilet in a Campervan

Due to regulatory amendments to the Self-Containment Standard NZS 5465:2001, all toilets must be permanently fixed to the vehicle in accordance with the manufacturer’s instructions. In other words, portable toilets are no longer acceptable to be certified self-contained. Note that a permanently fixed toilet may require some wiring if the flush is battery-powered.

The toilet also needs to be readily accessible for use within the campervan with plenty of head, legs and elbow room, even with the bed made up.

Remember, the toilet needs a black water tank capacity of 3 L per person for three days, so that’s 6 L minimum in a 2-berth campervan.

How to Convert Your Van into a Self-Contained Campervan© BLUETTI

Tips for Installing an Electricity Supply

Another important consideration if you are converting a van for camping is to have an electricity source. Although not a mandatory requirement of the Self-Containment Certification, you’ll need it to power any appliances, such as a fridge, electric barbeque or oven, for charging your devices or even to power a heater on those chilly New Zealand nights.

Portable Power Stations

The most versatile and easiest electricity source for first-time van conversions is a portable power station. These are basically large power banks with multiple outlets to use for all sorts of appliances. Some of our favourites are the BLUETTI AC300 and AC500 with a huge 3,000 W or 5,000 W of power and a base 3,072 Wh of battery capacity with a modular system that can be upgraded to hold a massive 18,423 Wh! The power stations have dual charging; solar panels and AC inputs, as well as several output options, including four AC outlets, four USB-A, a USB-C, an RV port, a cigarette lighter port and a DC 5521 output.

Check out our 6 Best Power Stations for Camping for a more detailed comparison or head straight to for all of their offerings.©

Other Requirements for a Self-Contained Campervan

Two items not mentioned above, but are listed in the requirements needed to certify a self-contained vehicle, are the evacuation hose and the rubbish bin.

Evacuation Hose

In a small 2-berth van and by using the water tank methods that we suggest above, an evacuation hose is not required, as the water tanks are portable and can be emptied straight from the tank. However, the tanks still need to have the ability to be removed without spillage and the connecting hoses need to be stored in a sealable plastic bag, container or separate locker when disconnected from the tanks.

Rubbish Bin (with a Lid)

You don’t need to go too fancy with this one. Just a simple rubbish bin with a lid is all you need to meet the self-containment requirement. However, we suggest you secure your rubbish bin with cords or screw it onto a cupboard door, for example. Get creative if you have to.

Facilities for Cooking and Sleeping

Although not a listed requirement for a self-containment certificate, the Self-Containment Standard NZS 5465:2001 only allows motor caravans and caravans to be given the self-containment certification – not any other type of vehicle. The Standard’s definition of a motor caravan or caravan states that a motor caravan is a “place of abode and has facilities for cooking, eating, sleeping and washing and is not a passenger vehicle”. By having some sort of cooking facilities, even if it’s just a gas cooker or portable hotplate, as well as a bed for sleeping, it shows that your van is a “place of abode” and not a passenger vehicle.

For more information on the definition of a motor caravan, see How to Get Your Campervan Certified Self-Contained.

How to Convert Your Van into a Self-Contained Campervan© Unsplash

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More About Self-Contained Campervans

That’s it for our guide on how to convert a van into a self-contained campervan. For more tips on living in a van or buying a campervan, check out some of our other awesome guides:

Finally, if there’s anything we’ve missed, you’re likely to find it in Buying a Car or Campervan in New Zealand: A Step by Step Guide.


Laura S.

This article was reviewed and published by Laura, editor in chief and co-founder of NZ Pocket Guide. Since arriving solo in New Zealand over 10 years ago and with a background in journalism, her mission has been to show the world how easy (and awesome) it is to travel New Zealand. She knows Aotearoa inside-out and loves sharing tips on how best to experience New Zealand’s must-dos and hidden gems. Laura is also editor of several other South Pacific travel guides and is the co-host of NZ Pocket Guide’s live New Zealand travel Q&As on YouTube.

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