Unit vs Building vs Site — how do you sort your walks?

Every NSPIRE item lives in one of three inspectable areas: inside the unit, the building systems and common areas, or the site. Sorting your pre-walks the same way keeps a site fail from hiding inside a unit checklist. How do you split the work on your team — one person per area, or whole-property walks?

The failure mode this fixes is real: a team walks units for two weeks, feels ready, and then the site items — the ones nobody owned — write the report. Three areas means three lists, three owners, and three different walking speeds: units are detail work, buildings are systems, site is weather and time. However you staff it, somebody has to be able to say 'the site is mine and it is done.' How do you split unit, building, and site walks on your team — one person per area, or whole-property sweeps?