Willem took to TikTok to share how he converted a Volkswagen van into a home on wheels in just 77 days.
A video on his channel Willem Explores, which has more than 85,000 followers, showed the solo traveller find the van after months of looking.
After purchasing the empty van on Facebook marketplace, Willem started by installing insulation and all terrain tyres.
He then added roof vents, 12mm plywood and vinyl flooring before fitting lots of windows for natural light.
Willem proceeded to clad the rear doors, inserted an insulated wall behind the cockpit and created a bed using IKEA parts.
The explorer fitted solar panels, a full off-grid electric system and a roof rack.
He built the frames for the van’s units, added overhead cabinets and got a beech worktop which he cut down to size.
Willem finished off the inside with paint and varnish, oiled the worktops, fitted spotlights and installed a sink.
He is now travelling around Europe and has visited places such as Germany, Romania and Austria.
Volkswagen California campervans can retail for between £60,000 and £70,000.
And social media users were quick to comment on the footage and ask questions.
One said: “Like how can you afford to not work all day but travel around? Doing some kinda home office job is all I can think of.”
Another asked: “Why do all these people in vans NEVER tell us what they do for a living.”
It comes after Matt Hubbert bought an LDV Convoy van in 2019 and spent just over one year transforming the van into the perfect holiday home.