I have just priced for a local high school ( and got the job )
I was told that my quote was not the cheapest but was well presented.
I enclosed.
Federation membership certificate
Safe contractor Cert
Employer liability cert
Risk assessment
Method statement
My quote
Company history.
They were very impressed with the Risk / Method as I had gone into detail ( 4 pages )
One of the other window cleaners method / risk just said, will be using ladders , applicator and squeegee
All put together in a binder.
To be done 4 times a year, payment 28 days.