Can you tell me the type of house and also have a look outside your house? Are the gables hanging out more than 6".
I had my house quoted, end of terrace cottage, 60sq/m requiring an awning as the overhang was not great enough. Worked out cheapest 10k, most expensive 21k.
It is nothing like the €100 per sq/m they quote, as there are a lot of extra's that may have to be accounted for.
I found this site useful with the pictures for getting an idea of what happens, though these guys did not give me the cheapest quote. [broken link removed]
Unfortunately I can't afford to proceed. Maybe in a few years.