Hi Richy
Whats your gut feel for the job? Maybe think on just a time taken basis rather than square meterage for you and one of your team to do.
If its a pole job,should be a piece of cake-not more than a couple of hours
Factor in the doing it out of hours and you should get a final figure
Plus ,do you do the windows on site already?It might be worth coming in at a lower level to secure a good on-going contract( a lot of these places are owned and operated by multi site franchises etc..)You just got to ask the right questions of the boss man on site
Also,from your recent posts on other topics,sounds like things are looking up for you.You got a good website,the vans look great and your staffing issues seem to be sorting themselves out on their own accord.Chin up mate and with some hard graft,seems like your on the up

Keep us posted on how you get on and good luck
Regards
Roy Cauldery
www.phoenixecs.co.uk