We get this question quite often from our clients.
There is not a precise answer to this question, because every house, every flat is different.
When we start our deep cleaning the first thing we do is to check the property top to bottom first.
For example, it depends a lot on condition, size and speed of the cleaners.
Usually a 1 bed flat with 3 experienced cleaners can take between 3 to 5 hours.
After our assessment we can give a rough time to our client, then we will call them 30 minutes before we finish to let them know the exact time they can come and inspect our end of tenancy cleaning work.