hi there,
anything else that you need to know just ask, more than happy to help.
lets be serious whitty please !!!!
whilst this is a forum to help each other out, and i am more than happy to help, and have doen over the past few years, i doubt it if anyine will give you all the answers,
you are simply asking how to set up the business, and what to charge. and all the back office to go with it, if it were only that easy, then everyone would be doing it.
brick acid pressure washing is a subject at the moment that the nhbc are looking at with regard to limiting or even banning it, if indeed that happens then that will have severe effects on a lot of businesses, servicing the domestic house building market.
with regards to COSHH you will get that info from your chemical supplier.
with regards to cost , only you know the answer to that question, you know how much it will cost to run your business, and your drwaings or salary, therefore you can then work out what YOU NEED to charge.
the problem is WHAT YOU NEED to charge and the amount the developer are paying for the service are most probably two different figures.
you will also find that the pressure washer company is on TENDER, and not ad hoc, therefore you will find a timeline between being awarded work and actually carrying out any chargeable services.
regards
martin