Cost of Slabjacking
In general, slabjacking costs about half the price of concrete replacement. The cost of slabjacking are is down into two components: fixed costs and variable costs. This post is about the cost of slabjacking for exterior jobs such as sidewalk repair and driveway repair. If you’re looking for the costs of slabjacking for floors inside of homes and buildings check out the cost of slab foundation repair.
Fixed Costs of Slabjacking
Fixed costs are those which are constant or nearly constant for a job. They include the cost of advertising, insurance, and office overhead. Some very large mudjacking jobs may have higher fixed costs associated with them, but particularly on the residential and multi-family side of things, fixed costs are relatively uniform per job. The cost of visiting a job to provide an estimate is a fixed cost, a shop or facility to house equipment is also a fixed cost. Getting to a job, prepping equipment and other work required to get set up is also a fixed cost of slabjacking.
Business and contractor license fees are also fixed costs; the contractor has to pay them no matter what. For people who work in multiple tax jurisdictions, sometimes each individual town requires them to have a business license (and pay fees based on the work just in that jurisdiction), which is a lot of time and work to keep track of. Depending on how a company is set up, the equipment they use, etc, the fixed costs of a mudjacking job are usually a few hundred dollars.
Variable Costs of Slabjacking
Variable costs are those which change depending on the nature of a job. For example, the amount of grout material used is variable. A sidewalk with no voids (air spaces) below it doesn’t take very much material to lift. Therefore, that job’s material cost is lower. A job that has very large voids under it would take more material, and therefore cost more per square foot than a job that doesn’t take a lot of material. Depending on the material used, the crew structure, etc, the variable costs of mudjacking are usually a few dollars per square foot.
Putting It All Together
Running a business isn’t cheap. Production slabjacking trucks can cost more than $100,000. Generally, the cost of slabjacking is a few dollars a square foot. For very small jobs, the square footage price will be much higher than that, because the fixed costs are allocated to just a few square feet. For example, if a company’s fixed costs per job are $300, and their variable costs are $5 per square foot, and a job is a 50 square foot sidewalk repair, then the effective total price would be $300 + 50*$5 = $550, or $11 per square foot. With the same cost structure for a 500 square foot driveway repair, the cost per square foot would be $300 + 500*$5 = $2800, or $5.60 per square foot. As you can see, the size of the job has a significant cost on the unit price (price per square foot).
Price of Alternative Repairs
The alternative to slabjacking is concrete replacement. Concrete replacement tends to have very high fixed costs per job. It is not uncommon to see prices near $50 per square foot for small jobs, if not even higher, because of concrete delivery fees, disposal fees, and the heavy equipment that’s required to remove concrete that has to be brought to the job site no matter the job’s size. Concrete replacement generally costs two to three times the cost of slabjacking.
Concrete replacement that seems really cheap is generally too good to be true, and you’ll end up with a poor quality installation.