Managed housing runs the tightest calendars. Social landlords and block managers typically put every building on an annual review, because a year is short enough to catch wear, vandalism and management drift, and regulators and insurers both recognise the rhythm without argument. Higher-risk stock moves faster: high-rise residential buildings often get a full reassessment each year, while simple low-rise blocks with a clean history stretch the reassessment out and rely on the annual review in between.
HMOs sit at the demanding end for a different reason: occupants change constantly, and each change can invalidate assumptions about escape familiarity and about cooking, smoking and charging habits. Licensing teams often expect fire precautions to be revisited yearly, and some councils write a frequency into licence conditions. Workplaces are steadier; most fold the fire risk assessment into the general health and safety calendar, alongside the broader cycles described in how often should risk assessments be done, and review after any change of layout, process or staffing.