An accountable person for an occupied higher-risk building must as soon as reasonably practicable after the relevant time assess the building safety risks as regards the part of the building for which they are responsible.
Further such assessments must be made—
at regular intervals,
at any time that the accountable person has reason to suspect that the current assessment is no longer valid, and
at the direction of the regulator, within a period specified in the direction.
An assessment under subsection (1) or (2) must be suitable and sufficient for the purposes of enabling the accountable person to comply with their duties under section 84.
In this section "the relevant time" means—
the time when the building becomes occupied, or
if later, the time when the person becomes an accountable person for the building.