Concrete flatwork subcontractors operate labor-driven businesses with lower equipment overhead than structural concrete work but higher labor coordination demands. Here is the overhead benchmark for flatwork contractors at every revenue level.
These benchmarks are drawn from SPM's work with commercial concrete flatwork contractors and industry data. Calculate your actual overhead rate — total G&A expenses divided by total revenue for the trailing 12 months — and compare to your revenue band below.
How to use this data: If you're above the top of the range, specific categories need review. If you're below the bottom, you may be underinvesting in systems and staff. Use the benchmark as a target range, not a single number.
Trade note for Concrete Flatwork Contractors: Concrete flatwork has the lowest equipment overhead of any concrete scope — finishing machines, power trowels, and screeds carry far lower capital cost than pumps, cranes, and forming systems. Flatwork overhead is primarily driven by labor supervision and scheduling coordination.
Flatwork quality depends on having the right number of experienced finishers deployed at the right time. Field supervisor and lead finisher overhead — the cost of keeping quality labor available — is the largest controllable overhead component.
Power trowels, laser screeds, and concrete equipment can be rented or owned. Most flatwork contractors own equipment that they could rent more cheaply at their utilization rate. The rent-vs-own analysis directly affects overhead rate.
ACI certification, mix design review, and quality control documentation are real overhead costs specific to flatwork work for demanding owners and GCs. These costs are often not tracked separately or priced into bid overhead.
SPM tracks field supervision cost as a distinct overhead category in ControlQore — separate from field labor — so the true cost of supervision infrastructure is visible and can be benchmarked against revenue growth.
Annual equipment utilization review for flatwork tools — power trowels, laser screeds, curb machines — identifies equipment that should be sold and rented on an as-needed basis vs. equipment that earns its ownership cost.
ACI inspection fees, mix design documentation, and quality control costs for specific projects are coded to those jobs in ControlQore rather than to overhead — producing accurate job margins on demanding flatwork scopes.
Find out in a free 30-minute call. Josh will tell you straight where your overhead rate stands and what to do about it.
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