Electrical contractors rarely lose money on one big mistake. Profit erodes through small, untracked inefficiencies, material pricing drift, weak purchasing strategy, labor assumptions, and field disruptions, that compound across a job. Together, these "invisible leaks" can quietly drain 3–12% of total job profit before closeout.Most electrical contractors do not lose profit in dramatic ways. There is no single blown estimate or runaway change order to point to. Instead, margin slips away in pieces, a few dollars on copper here, twenty minutes of travel time there, a supply run that should have been planned weeks earlier.By the time, a job closes out, these scattered losses add up. Industry-experienced estimators estimate they can account for 3–12% of total job profit. The hard part? None of them show up as a single line...
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