Building a 24x24 Garage Yourself - What Budget to ExpectMotivated homeowners with basic construction skills can build simple 24x24 (576 sq ft) steel garages for storage or shops quite affordably using prefab building kits and elbow grease equity. But what exactly should owning your own 576 sq ft garage cost by going the DIY kit route? Plan around a $15,000-$25,000 budget to complete basic functional...