Cost to build a garage per sq ft is going to range $35 - $55. That's the national average so it might be different in your area. Here a good cost guide / tips - http://tiny.cc/CostofaNewGarage
The size of the garage / material quality will determine what you pay. Best thing to do is to get a bunch of bids with respectable companies in your area and see who offers the best deal and understands what you what.
The cost of building a garage, has many different factors to consider. Besides the obvious difference in cost depending on size, there is also, materials, attached or detached garage, and how many levels the garage will have. More information on costs to build a garage can be found at http://thehousingforum.com/how-much-does-it-cost-to-build-a-garage/.
It depends on area and the materials used for building it. It ranges over $40 and extend up to your limit. First you must have the plan in mind, what to include and all other stuffs and meet some professional builders who can help you accomplish your will. http://www.garageliving.ca/install