The article outlines principles for creating a legal camper conversion based on production vehicles (SUV, MPV, minivan) while retaining access to standard underground parking garages (height ≤2 m, width ≤2.5 m). Key requirements: reversibility of all modifications, no drilling or gluing, use of foldable mattresses 5–8 cm thick, magnetic curtains and portable power stations 200–500 Wh. Stationary wooden frames, alteration of seat count, tampering with the electrical system and use of open flames are prohibited.