TLDR
Margin bleed on construction jobs rarely happens all at once. It accumulates in small overruns across labor, materials, and scope that no one catches until closeout. The antidote is reviewing actual vs. estimated costs weekly on every active job and calculating cost-to-complete before the job is more than halfway done.
- Margin Bleed
- The gradual erosion of a job's profit margin through cost overruns that accumulate over the course of a project without corresponding revenue increases.
DEFINITION
- Cost-to-Complete
- The projected remaining cost to finish a job. When added to actual costs to date, gives the projected final cost and projected final margin.
DEFINITION
- Budget Consumption Rate
- The percentage of a job's budget that has been spent, compared to the percentage of work that has been completed. Budget consumption running ahead of percent complete is a signal of a cost overrun trend.
DEFINITION
- Absorbed Cost
- Work performed or costs incurred for which no separate revenue is received. Extra scope performed without an approved change order becomes an absorbed cost.
DEFINITION
The Problem With End-of-Job Accounting
The most common financial process for a specialty trade sub looks something like this: jobs run, the office manager codes invoices and payroll to projects in QuickBooks, and at the end of a job the owner looks at what came in versus what went out.
If the net is good, the job was profitable. If it’s less than expected, something went wrong. Sometimes the owner can figure out what. Often they can’t, because the costs accumulated over months and there’s no time-stamped record of when they diverged from the estimate.
That’s not a job costing practice. That’s accounting after the fact.
Job costing that actually protects your margin requires data that’s current enough to act on. Weekly, not monthly. During the job, not after it closes.
What Margin Bleed Actually Looks Like
It doesn’t usually happen on a single line item that’s dramatically wrong. It accumulates. The electrical rough-in took two days longer than estimated. The trim materials came in 8% higher than the quote. Two small scope adds got done without opening change orders because they took less than an hour each. The inspector required a re-do on one section that added a day of labor.
None of those individually are catastrophic. Together on a 4% margin job, they erase the profit.
The subs who catch this early have a system for seeing the accumulation while it’s still happening. The subs who don’t catch it early find out at closeout that a job they thought was good turned out to be flat or negative.
The Weekly Review Practice
The most effective margin protection practice isn’t software. It’s a habit.
Every week, for every active job, look at two numbers: percent of budget consumed and percent of work complete. If budget consumption is running ahead of percent complete, the job is trending toward a cost overrun. That trend needs explanation and response.
The explanation is usually in one of four places: labor productivity, material costs, scope without a change order, or an estimate that was wrong from the start. Each one has a different response. But you can only figure out which one caused the problem if you’re looking at the data close enough to the event that the causes are still traceable.
Software makes this review faster by surfacing the numbers automatically rather than requiring you to pull them together from multiple sources. But the review habit is the protection mechanism. The software just makes the habit maintainable.
The Change Order Discipline
Open change orders that sit unapproved are future absorbed costs. Every week they stay in limbo is a week the GC’s memory of the scope change fades and the documentation becomes harder to reconstruct.
The practice of closing open change orders before the end of each billing cycle, every billing cycle, is the discipline that keeps extra scope from becoming a gift to the GC. It requires someone in your office to own the change order log and follow up weekly. It’s not a complicated process but it is a consistent one.
The combination of weekly cost review and active change order management is what separates specialty trade subs who consistently hit their margin from those who find out at closeout that they should have.
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See plans & pricingQ&A
How do specialty trade subcontractors catch margin bleed before closeout?
Weekly review of actual vs. estimated costs at the cost code level, with a cost-to-complete calculation at the job midpoint. Any job where budget consumption exceeds percent complete by more than 10% needs immediate investigation. Change orders need to be tracked and closed while the scope is current.
Q&A
Why do specialty trade subs often discover margin problems at job closeout?
Because their cost tracking happens monthly or at job end rather than weekly. By the time the data shows a problem, there's no time to take corrective action. Real-time job costing with weekly review is the practice that shifts margin visibility from backward-looking to current.
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