They are hireing a cherry picker, that may not come with an operator, you may be required to operate it, ipaf trained etc, also i doubt you will have sole access to the cherry picker, as other trades will require it.
It really is a big job to take on and even try to price, i was only sub contracted to work on the one in leeds.
The windows we gave a once over with the power washer as we were doing the cladding, but they were covered in tape and sealent, all of which can be a right pain in the backside to get off, then we went back and did them trad.
The cladding we were only allowed to use soapy water and a scrubbing brush/yard brush to wash and then power wash off.
Looking at your pictures the site is open onto the public pavement/highway, this looks a bit of a night mare where h and s is concerned.
i know the guy i worked for got a real good price for the job, but i think he would quote more in future due to all the head aches you come across.
There will be people who specialise in this sort of job, you may quote cheaper than them, but you could end up regretting it.
Not trying to put you off, just an insight
Good luck with it
jason
