Creating a play space means working within a dense regulatory framework, often little known to the general public but central to the practice of architects and fit-out designers. In public-access buildings (ERP) that host children, numerous rules apply: fire safety (fire classification of materials, reaction and resistance to flames, evacuation routes), hygiene and indoor air quality (selection of low-emission materials, compliance with standards for adhesives, paints and panels), accessibility for people with reduced mobility (circulation paths, usage heights, visual contrasts, inclusive furniture), physical and mechanical safety (rounded edges, concealed fixings, absence of pinch points, dimensional stability, tensile strength), and acoustics (a key issue in collective learning spaces, requiring sound absorption to limit reverberation). In addition, there are standards and requirements to follow for each installation: furniture compliant with NF EN 1729 standards for educational settings, EN 1176 and EN 1177 standards for collective play installations for children under 14 (playgrounds, most often outdoors), non-slip surfaces, ergonomics adapted to age groups, and controlled modularity to prevent tipping… This sometimes highly restrictive framework must, however, never be visible in the final result: the designer’s achievement lies precisely in concealing these requirements beneath a simple, fluid, and reassuring form.