Estimating calculations ruby / plugin

[rdluther]

I have been asked by an associate to look into the possibility of a "plugin" for sketchup that would allow him to select a face in sketchup and assign specific characteristics for the face, which would then be calculated into a matrix. He wants to take the face and multiply a designated coefficient with the square footage to get the labor time and costs for various landscape beds in his project. he is making the faces on a google earth map and then wants to do his estimating out of the model... any ideas of where to start or if anything like this exists.

Thnks
Bob