What is the average cost per sq. ft. for adding a second story to a 1200sq ft house in the Edmonds, WA area?

Question:We have a basic rambler and are looking to add 4 bdrs 2 bath and a loft. I want a rough idea of what the average cost is before I get quotes from contractors.

Answers:
If you are not facing major problems like an inadequate foundation, you should expect to pay in the neighborhood of $150 per square foot if not basic and not high end.