What You Need for a Self Containment Certificate (Green Warrant) in New Zealand

If you want to freedom camp legally in New Zealand, your vehicle must now meet the updated national standards for a self-containment certificate. The Plumbers, Gasfitters and Drainlayers (Self-Contained Vehicles) Regulations 2023 significantly strengthened the rules around water storage, waste management, fixed toilets, and ventilation systems. 

These changes replaced the old "blue sticker" scheme and introduced a more robust self contained certification NZ framework designed to protect the environment and ensure consistency across the country. Today, obtaining a campervan self containment certificate means proving that your vehicle can genuinely operate independently for at least three consecutive days.

To qualify, your campervan must safely store fresh water, contain and dispose of grey and black waste hygienically, and provide compliant sanitation facilities for the number of occupants it is certified for. The focus is no longer just on having equipment installed — it’s about meeting clear technical standards and demonstrating real self-sufficiency.

Self Contained Certification Requirements: Quick Checklist

To qualify for a Green Warrant and self contained sticker, your vehicle must have:

  1. Fresh-water storage system

  2. Waste-water (grey + black) system and off-loading mechanism

  3. Sufficient capacity for three days per person

  4. Fixed toilet usable inside the vehicle

  5. Sink plumbed to the waste-water tank

  6. Ventilation system

  7. Secure rubbish storage

Each system must function for a minimum of three days for the number of people the vehicle is certified for.

Fresh Water System

A compliant fresh-water system is one of the core self contained certification requirements in New Zealand. Your vehicle must be able to safely store and deliver potable water in a way that prevents contamination, leakage, and environmental risk.

To meet certification standards, your water system must satisfy the following technical criteria:

  • Minimum capacity – approximately 12 L per person per day (36 L per person for three days)

  • Food-grade, opaque, non-toxic tanks to prevent algae growth

  • Rigid supports so tanks cannot move while the vehicle is in motion

  • UV protection – UV-resistant materials or shaded installation

  • Air vent to prevent vacuum collapse as water is drawn out

  • Sealed, contamination-proof filler inlet

  • Leak-free pipework made from potable-grade materials

  • Optional water-level sight tube or electronic gauge for easier monitoring

  • Clear separation from waste plumbing to prevent cross-contamination

Example of a certified self-containment fresh and waste water system installed in a Ford Transit by Vanlifer NZ
Example of a certified self-containment fresh and waste water system installed in a Ford Transit by Vanlifer NZ

Example of a certified self-containment fresh and waste water system installed in a Ford Transit by Vanlifer: food-grade tanks securely mounted under the sink, connected to a 12V pump for safe and pressurised water delivery inside the van.

Vanlifer Product Recommendations

If you're building or upgrading your system before a certification inspection in Auckland, these compliant components are available directly from Vanlifer:

  • Fresh water tanks (multiple sizes) – Vanlifer Fresh Water Tank Range
    👉 Shop Fresh Water Tanks

  • Compact tank option – Vanlifer 25L Fresh Water Tank
    👉 Shop 25L Fresh Water Tank

  • Water filler & cap – Camec Water Filler with Lockable Cap
    👉 Shop Water Filler

  • 12V water pump – Seaflo 21 Series Diaphragm Pump 12V DC
    👉 Shop Water Pump

  • Water level gauge (optional) – Compatible 12V tank monitor available separately

Waste-Water System (Grey & Black) and Off-Loading

All used water must be collected, stored, and emptied hygienically. This is a critical part of meeting the national self-containment standards and is closely checked during your certification inspection.

To comply with current regulations, your waste water system must meet the following requirements:

  • Waste capacity must equal or exceed the fresh-water supply

  • Tanks built from non-corrosive, non-toxic, stable material

  • Tanks securely mounted with solid supports

  • Off-loading must occur via a clean, sealed connection at an approved dump station

  • Outlet hose minimum 3 m long

  • Outlet diameter 25–38 mm; isolation valve same size

  • Each fixture must include a smell trap (P-trap) or one-way air valve

  • Drain hoses must be stored hygienically in a sealed locker

  • Level gauge or sight tube recommended to prevent overflow

Grey and black water can be managed in a combined system as long as an isolating valve is installed to keep them separate when required.

Each waste tank must be vented directly to the outside of the vehicle, using a vent pipe with a minimum internal diameter of 10 mm. The vent outlet should be positioned above the lowest fixture and away from any doors or windows to prevent odours from entering the living space. An insect-proof screen must also be fitted at the end of each vent to maintain hygiene and airflow.

Vanlifer Product Recommendations

If you’re preparing your van for inspection in Auckland, the following compliant waste-water components are available from Vanlifer:

Three-Day Capacity Requirement

To meet self contained certification requirements in NZ, your vehicle must be capable of operating independently for a minimum of three consecutive days without refilling fresh water or discharging waste.

During your inspection, the certifier will calculate compliance based on the total combined capacity of:

  • Fresh-water storage

  • Waste-water storage

  • Toilet capacity

Here is a typical example for a 2-berth campervan:

  • Fresh water: 72 L

  • Waste water: 72 L

  • Toilet: 12–15 L cassette (or 5–6 L per person per day for composting toilets)

If any of these capacities fall short, your vehicle may not qualify for certification.

Vanlifer Product Recommendations

To simplify compliance and ensure your system meets Auckland inspection standards, Vanlifer offers:

Fixed Toilet Requirements

Under current regulations, only permanently installed toilets qualify for certification. Portable or removable toilets no longer meet the national standard.

These are the toilet systems approved for certified self-contained vehicles:

  • Cassette-type toilets draining into a sealed removable cassette

  • Waterless or composting toilets (AS/NZS 1546.2 compliant) with correct venting

Example of a certified self-containment cassette toilet installed in a Ford Transit by Vanlifer NZ

Cassette toilets installed in a Ford Transit campervan by Vanlifer

 

To comply with certification standards, your toilet must:

  • Be usable inside the vehicle without removing it

  • Allow a person to sit and operate it without stepping outside

  • Remain accessible if installed under a bed or bench (lift-up, slide-out, or swing mount allowed)

  • Provide reasonable privacy

  • Be rigidly fixed to the vehicle structure

  • Discharge directly into a sealed cassette or black-water tank

  • Be constructed from durable, non-corrosive materials

Example of a certified self-containment cassette toilet installed in a Ford Transit by Vanlifer NZ

Fixed cassette toilet installed under the seat. Waste is discharged by removing the cassette through the exterior access hatch and emptying it at a certified dump station.

Example of a certified self-containment cassette toilet installed in a Ford Transit by Vanlifer NZ

Another waste disposal system, installed by Vanlifer on a LDV Deliver 9 campervan - The exterior access hatch allows the cassette to be safely removed and emptied at a dump station. 

The following minimum tank sizes are required for composting toilets to meet self-containment standards:

  • Solids chamber ≥ 0.5 L per person per day

  • Liquids chamber ≥ 1 L per person per day

Composting waste must be processed and disposed of safely according to New Zealand self-containment and environmental regulations. It must mature for at least 12 months before burial or be handled according to AS/NZS 1546.2. Dry waste must not go into dump stations or public bins.

Vanlifer Product Recommendations

For reliable compliance during your Auckland certification inspection:

Sink And Rubbish Storage

A fixed sink and secure rubbish storage are mandatory components of a compliant self-contained vehicle.

Sink Requirements

Your sink must:

  • Be made from non-corrosive, food-safe material

  • Be permanently installed

  • Use a waste pipe diameter between 19–25 mm minimum

  • Include a trap or vented loop to prevent odour backflow

  • Have sealed outlet fittings and watertight joints

Example of a certified self-containment fixed sink installed in a Ford Transit by Vanlifer NZ

Example of a fixed, food-grade stainless-steel sink installed by Vanlifer in a Ford Transit campervan.

 

Rubbish Storage Requirements

Your vehicle must also include:

  • A washable, lidded rubbish container

  • Capacity for at least three days of waste

  • Secure mounting to prevent tipping while driving

Failure to secure the bin properly can result in inspection failure.

Vanlifer Product Recommendations

To prepare your van for certification:

Ventilation System

A compliant ventilation system prevents odours, gas buildup, and pressure issues within your campervan. It is a critical safety component under New Zealand self-containment standards.

Your ventilation system must:

  • Vent all grey and black water tanks directly to the exterior

  • Position vent outlets above the lowest fixture and away from openings

  • Use non-corrosive, securely mounted pipework

  • Include insect screening on all vent terminations

  • Connect fixtures through traps or one-way valves

  • Use passive airflow or fan-assisted systems where appropriate

Roof ventilation is strongly recommended, especially in compact vans.

Example of a certified self-containment vent system installed in a Ford Transit by Vanlifer NZ

A roof vent installed by Vanlifer on a LDV Deliver 9 campervan.

Vanlifer Product Recommendations

For compliant and professionally installed ventilation systems:

If you’d prefer expert installation to ensure your roof vent meets certification standards, Vanlifer provides a professional fitting service in Auckland.
👉 Book Roof Vent Installation

How Do You Get Your Self-Containment Certificate in New Zealand?

Once your vehicle passes inspection, you’ll receive:

  1. Certificate of Self-Containment – a document detailing tank volumes, materials, vent sizes, and certified occupancy. Recorded in the national register.

  2. Green Warrant Card – Rigid plastic (85 × 55 mm) displayed inside the windscreen on the left side. Shows registration number, certificate number, occupant capacity, and expiry date.

  3. Validity: four years unless plumbing, tank or toilet systems are modified.

All certification data is stored in the national SCV Register at nzscv.co.nz, where enforcement officers can verify your record.

Book Your Green Warrant with Vanlifer

Vanlifer provides two options to help you complete your self-containment certification:

Self-Containment Inspection: Green Warrant certification service
→ Book Inspection

SCV Kit Pre-Install: Complete plumbing + toilet package for certification
→ Shop SCV Kits

Remote Self-Containment Inspections

Self-containment inspections are normally carried out in person by an authorised Vehicle Inspector.

However, if a vehicle is located in a remote area with no reasonable access to a Certification Authority, the PGDB allows the use of photo or live-video evidence to support the inspection.

In these cases the certifier must:

  • Keep a complete auditable record of photos and/or videos clearly showing every facility – tanks, toilet, vents, sink, hose connections

  • Record all measurements and findings on the official inspection form

  • Upload the inspection record and media to the SCV Register

Vanlifer usually carries out self-containment inspections in person at our Auckland workshop.

However, for customers based in remote areas, we also offer a remote video verification service approved by the Certification Authority.

Remote Video Verification

For remote builds outside Auckland, we provide photo or live-video support to complete your inspection when travel isn’t practical

→ Request Remote Assessment

In-Person Inspection

Our standard in-person certification appointments take place at Vanlifer’s Wairau Valley workshop in Auckland.

→ Book Green Warrant

Self-Containment Certificate Checklist: What to Bring

Before attending your inspection, ensure:

  • Tanks are installed, full, and connected

  • Toilet is fixed and operational

  • Sink drains correctly

  • Hoses, valves, vents, and traps are visible

  • Rubbish bin is secured and onboard

The inspector will complete the official PGDB form, photograph all systems, and submit your record to the national register.

Book Your Self-Containment Inspection

Vanlifer is an authorised Certification Authority for self-contained vehicles in Auckland.

We inspect, certify, and upload your record directly to the official SCV Register.

Price: $220 (includes PGDB levy)
Duration: Approximately 45 minutes
Location: 7/41 View Road, Wairau Valley, Auckland

👉 Book Your Inspection
👉 Contact Our Team

In Conclusion: Self-Containment Requirements at a Glance

Here’s a quick visual summary of the essential features every certified self-contained campervan must include.

Infographic source: Plumbers, Gasfitters and Drainlayers Board 2023 – “Getting Your Vehicle Certified as Self-Contained”.

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