"16 houses in a day!is that all!" Yep, it is. You're welcome to come out with me and see if i'm a slouch. I rarely take a break for lunch - grab a bite each time i'm back at the van. The 16 per day is good going considering the properties and area, and yep, they tend to be a mix of the usual small semis + larger properties. I started at 08:30 this morning and have done 10, 2 of which were first cleans and I had to use my trolley and tfr on one first. I started the drive home at 15:20.
I haven't worked solely trad and my trad skills are only passable, but I can't see how it's much, much faster than wfp, but every property is different. A local cleaner to me is trad and him and his mate do 25 between them in a day, but as we are fairly rural area I know he has an amount of driving.
It will be interesting to see how you get on doing wfp; 3 months and you should be up to speed, if not sooner. It's not rocket science. If you can do 25, 20 minute houses in an average day i'll get you a pint in.