Often Transfercar receives questions about where you can park your car or campervan overnight for free.   It’s fair enough we think, that if you already have a place to sleep in, you shouldn’t have to spend extra cash on accommodation, so we’ve found a website that that has the answers you seek:
The Department of Conservation (DOC rocks!!) manages over 250 vehicle-accessible camping areas on conservation land. Although not all of them are free, many are and others are really cheap. But remember, you get what you pay for. Many of these patches of dirt have only basic amenities such as water and toilets, but hey, it’s still free!
Be aware guys that parking campervans and camping on the side of the road in many regions and towns is prohibited so stick to these areas if you can.
Happy travels!!