Working Drawings/Building control

Had planning approved and now need a set of working drawings for building regs and builders.
View approved extension via link below.

http://www.stalbans.gov.uk/environment-and-planning/planning/planning-applications/planning-applications-search.aspx

Please note. I will probably want to change the roof on the side to exactly match the pitch of original roof, with a view of putting a Dorma in.