The cost to pour a basement averages $33 per square foot, lower than the cost of adding a room at $90 to $200 per square foot. The cost to build a basement is $26,000 to $80,000. After the lot is graded with sand and crushed gravel, and footings are poured, one solid slab is poured for the entire house, usually inside a wooden frame filled with rebar-iron mesh-to strengthen the concrete slab and prevent cracking. Pouring a foundation typically takes a full 8 hours with a 3-person crew.Ĭoncrete slab foundations for homes should be 6” thick with 3,000 PSI concrete. To pour a 1,200-square-foot foundation, $3,100 would be attributed to labor and $4,600 in concrete costs. Concrete contractors charge $50 to 150 per hour with additional concrete delivery fees of $60+. The total cost to pour a concrete foundation is $6.41 per square foot on average. The labor cost to pour concrete is $2.60 per square foot, while the cost of concrete alone is $3.81 per square foot. The load or the weight of the house is stabilized through the raft foundation and dispersed to the earth. The concrete slab rests on steel-reinforced soil, columns, or walls. Mat or raft foundations are used where there are poor ground conditions, such as soil that is unable to bear any loads. Reinforcing the concrete with rebar costs an additional $1 to $2 per square foot. The cost to build a 1,350-square-foot raft foundation is about $10,100. ![]() Raft foundations cost $5 to $10 per square foot. Stem walls add stability to homes and buildings in areas where earthquakes may happen, or soil may become unstable. The slab can be elevated to accommodate septic systems based on gravity flow. The average cost to build a 1,350-square-foot stem wall foundation is $7,600.Ī stem wall foundation works well when building on a slope, as different sections can be built to different heights. A two-way beam supports all four foundation edges at the same time, providing a more stable base.Ī stem wall foundation costs $50 per linear foot installed, or $7,000 to $20,000 total. ![]() Monolithic two-way beams cost about $13.52 per square foot. A one-way beam supports the foundation on two edges. This type of foundation pours the beams (or footers) at the same time as the slab. Monolithic one-way beams cost $9.80 per square foot on average. The quality of these walls can be very good, but the cost is typically quite a bit more than poured concrete or block walls.Monolithic slab foundation poured above the ground These are built in a controlled environment and then shipped out to the jobsite where they are assembled. Prefabricated foundation wall panels are another foundation option that is becoming more popular as time goes on. But if they do, a simple epoxy injection from the inside of the basement will take care of the problem in most cases. In fact, you will most likely get cracking in a poured foundation wall but in many cases, the cracks are hairline and do not require attention. ![]() The potential for failures and cracks are much greater, in my humble opinion, with the block wall.ĭoes that mean you won’t get cracks with a poured concrete wall? Absolutely not. ![]() Contrast this with the block wall which is made up of many smaller pieces secured together with mortar. The typical wall is 8-10 inches of solid, seamless concrete. So which type of foundation has the highest quality associated with it? As a builder, I can tell you the thing I like best about the poured concrete foundation wall is the solid mass. Saving four or five days in your construction schedule can be a huge savings on your construction loan interest and other monthly costs. Here is the typical schedule…īlock walls can take a week or longer depending on the size of the crew. Most new home poured foundations can be completed in three days. If for some reason your home is nowhere near a plant, there may be a significant cost savings in going with block walls. For homes, this concrete is brought in by cement trucks from a ready mix plant. Using a poured concrete wall requires massive amounts of concrete. Let’s take a look at each so you can choose the best option for your project. So the question becomes, “Does it make more sense to use a concrete poured foundation wall or should you use block?” There are pros and cons to each of these methods for building the foundation for your new home. When you’re building a new home, you want the highest quality for the best possible price.
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