House raising(also called house lifting, house jacking, barn jacking, building jacking) is the process of separating a building from itsfoundationand temporarily raising it with hydraulic screwjacks.
The process is the first step instructure relocationin which the building is moved to a different location.[1]House raising may also be a part of arenovationto build afoundationunder an existing house or make a house larger by adding a new floor level. Often employed in areas that are prone to flooding and storm damage, this process can be achieved through the use of either timber piles or helical piles. Once a house is raised and supported oncribbing,a new foundation can be constructed beneath it.[2]AfterHurricane KatrinaandHurricane Sandylarge numbers of houses in parts ofLouisiana,New YorkandNew Jerseywere raised to avoid future flooding.
Jacking andshoring,such as usingjack posts,are used to hold a wooden building up during foundation andsillrepairs. Little published information is available about building jacking methods. The skills are usually acquired through experience working for a building jacking or moving company.
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