Designing from 90 Centimetres

Most furniture, most buildings, most cities are drawn from a height of about a metre and a half — the average adult eye. A child under seven sees the world from roughly ninety centimetres. That's not a detail; it's a different building entirely. A door handle at adult-hip height is a door handle a four-year-old has to reach for. A window that frames a skyline for an adult frames a wall for a child sitting on the floor.

At Studio 4&7, the ninety-centimetre line is the first thing we draw, before layout, before material, before colour. We physically get down to that height on site — camera at knee level, notebook in hand — because plans drawn from a standing adult's perspective consistently get scale wrong for the people who'll actually use the space. A ramp that reads as a gentle slope on a section drawing can feel like a hill to a toddler. A ceiling height that feels generous to an adult can feel exposed and echoing to a child who associates safety with enclosure.

This isn't just a design nicety — it changes real decisions. Sightlines get planned around a child's actual field of view, not an adult's, so that a corner genuinely feels hidden and a lookout tower genuinely feels tall. Handrails, step heights, and the width of a tunnel a child has to crawl through are all sized against a nine-year range of bodies, not a single "average" user. Colour and light are considered from a seated, crawling, or newly-standing vantage point, where a wall two metres up might as well not exist.

The result is a kind of architecture that adults often don't fully register until they watch a child move through it — the exact moment a space designed at ninety centimetres starts to make sense, because it was never really designed for us in the first place.