Foundation repair methods are often determined by local new construction building practices. Steel push piers are the predominate foundation repair methods for basement and crawlspace homes, whereas push piers and underpinning helical piers split in their use by foundation repair contractors for slab on grade homes. As the article below, from the National Association of Home Builders, indicates home building practices varies greatly across the nation. As home building practices vary so do foundation repair methods. 54% of homes are built on concrete slabs, while 34% of homes are built with basements and 15% of homes are built with a crawl space.