Room / setup,Width,Depth,Height,Best technology starting point,What to watch Compact room / garage Space-led,Under 3.3m is tight,Under 4.5m is tight,Under 2.59m high risk,Camera-based / net-first,"Driver swing, offset hitting, containment" Single garage,3.0–3.6m common planning range,About 4.5–5.5m,2.59–2.74m needs careful testing,Camera-based first,"Door tracks, ceiling, mixed-handed use" Double garage,4m+ gives more flexibility,5.5m+ gives radar more options,2.74m+ preferable,Camera or radar,Ceiling may still be the limiting dimension Spare room,3.0–3.6m can be restrictive,Often under 4.5m,Test at finished mat height,Compact camera / net-first,Depth and safe containment Garden golf room,Plan 4m+ where possible,Plan 5.5m+ where possible,Plan 2.8m+ where possible,Camera or radar,Design around enclosure and swing before construction Shared / retractable room,Depends on safe swing zone,Camera route reduces rear-space pressure,Full swing-test essential,Camera-based + retractable screen,Repeatable setup and safe storage