As already mentioned, we don't like to do our EICRs in half measures. You can expect us to be looking at your property for a minimum of 3 hours. Depending on the size and complexity of the property, this could be more.
For Commercial sites, this might turn into days, or over a longer period if we are going in out of hours.
The only real way of telling whether your electrics are completely safe is by having a thorough health check on the electrics (EICR) carried out by an experienced electrician. We specialise in these - please find out more here.