When a foundation is no longer suitable to support the house, from age, decay or inferior construction a new foundation is needed. Although replacement of the foundation is structurally superior, sometimes there are circumstances where a "sister" foundation is the only solution, such a a historical home where the exterior finish is required to remain (brick, rock, etc.).
Part of the process of installing a sister foundation is installing new anchor bolts and framing connections that would eliminate the need for additional retrofitting in those areas replaced. If only portions of the foundation are sistered, the remainder can (and usually is) seismically retrofitted/bolted.
Yes, building permits are required. Some municipalities and types of structure (i.e. hillside or tall cripple walls) will also require a set of engineered structural plans. Foundation Repair LA Inc. will provide the required plans, engineering and building permit for the work.
The cost of a sister foundation replacement varies drastically depending on the size of the house, type of foundation and how much is being sistered. Call us for a quote if your foundation needs replacement.
Yes, and you will not be required to move out of your home for this work to be done. Foundation Repair LA Inc. will properly shore (install temporary support system) to allow for the work to be done without endangering the home or occupants.