Hi
My core business is carpet cleaning now and again hard floors, slowly braking into pressure cleaning, domestic.
Have come across two companies who used wfp had a go four story flats, definite knack in using the pole, have a look at the other forum they have a separate wfp section; some one may take you out with them.
Only tips I can give put a request out on the cc side and keep your money in the bank till you decide what route you are taking, if this is one contact the NCCA.
Good luck
Len