When I owned my home cleaning business, I got in the habit of cleaning from the top of the house to the bottom and doing the 'wet' rooms first. Meaning I would clean the rooms that needed water or wet cleansers like the bathrooms. When I got downstairs I did the kitchen first. That way all the floors would be dry before I left my clients houses and I could put back any furniture I had to remove from those rooms.
This was my speed cleaning technique. What about you? Do you have one?