Some landlords and agents maintain high vetting standards and, where commercially viable, visit the applicant in their current home to assess how they treat their existing property.
This may reveal practical issues that paperwork cannot show, such as property care, overcrowding, smoking, pets, cleanliness, hoarding or general lifestyle concerns.
PIMS operational reality
This is more achievable where the property is desirable, demand is strong and the agent or landlord can afford to set a higher bar.
PIMS does not suggest every application can be handled this way, but experienced agents should understand that deeper vetting may reduce future operational burden.