First Floor Extension Over Carport Cost. According to Domain the cost of adding an 80m 2 ground-floor extension ranges from 164526 to 310896. It can cost as little as 5600 and as much as 125000 or more.
As well as the floor area the cost depends on the design and materials. This assumes that all the stars align. Your metal carport garage or other metal building may have served its purpose when you first purchased it but as your needs change and the number of belongings you have increases you may find your needs changing.
For those with an existing garage built with a solid structure the option of converting andor extending the garage itself can be an attractive oneTypically converting a garage will cost between 10000 and 15000 less than building a new ground-floor extension making it a cost-effective choice for those with tighter budgetsHowever it.
Leading Architecture Firm. Invalid Zip code Find yours. 10 year structural warranty. 12 x 12 wooden flat-roof carport DIY High.