Unpack by function
Kitchen, sleep, work and daily-entry needs come first.
Use temporary zones
Boxes and simple bins reveal category sizes.
Measure after furniture is placed
Usable wall and closet dimensions become clearer.
Let the system settle
A few weeks of use can reveal where items naturally need to live.
Practical boundary. Measure first, respect product load limits, and do not improvise wall, ceiling or overhead installations when the structure or appropriate hardware is uncertain.