The case for keeping steel detailing in-house has a certain intuitive appeal: you maintain control, you develop internal expertise, and you don’t pay an outside firm’s margin. It’s the kind of reasoning that sounds prudent on a budget call. It also, in most cases, significantly underestimates what in-house detailing actually costs.
This isn’t an argument that outsourcing is categorically right for every fabricator. There are scenarios where in-house capability makes strategic sense. But the decision should be made with accurate numbers — not with a comparison between an outsourcing invoice and a detailer’s salary. That comparison omits most of what in-house detailing actually costs.
The True Cost Framework
To calculate the real cost of in-house detailing, fabricators need to account for five cost categories that rarely appear on the same spreadsheet.
Category 1: Fully loaded labor cost
Start with the detailer’s salary — but don’t stop there. Fully loaded labor cost includes employer payroll taxes (7.65% minimum), health insurance contributions, retirement plan matching, paid time off (typically 15 to 20 days annually, plus holidays), and any bonuses. According to the Deloitte Engineering and Construction Outlook, construction wages have increased 4.2% year-over-year as of August 2025, and the labor market for skilled detailers remains tight. A detailer earning $75,000 in base salary is likely costing $95,000 to $105,000 in fully loaded annual cost — and that number is rising.
Category 2: Software and technology costs
Professional steel detailing software — SDS2, Tekla Structures, Advance Steel — carries meaningful annual licensing costs. For a single-seat SDS2 license, you’re looking at several thousand dollars per year, plus the cost of hardware capable of running it effectively. Add IT support, training subscriptions, and periodic hardware refresh cycles. These costs are often categorized as overhead rather than attributed to the detailing function — making the detailing team appear cheaper than it is.
Category 3: Utilization rate
This is the cost category that most completely disappears from in-house calculations. A full-time detailer is paid 52 weeks per year. But project workload isn’t linear. There are slow periods — between project awards, during bidding cycles, when a project is in design development and drawings aren’t yet ready for detailing. During those periods, your in-house detailer is a fixed cost with no corresponding billable output.
An outsourced detailing relationship is, by contrast, variable. You pay for drawings produced. During slow periods, your cost drops. During peak periods, you can scale. The utilization advantage of outsourcing compounds significantly over a full fiscal year — particularly for fabricators with lumpy project pipelines.
Category 4: Management overhead
In-house detailers don’t manage themselves. Someone on your team spends time coordinating drawing packages, reviewing submissions, handling revisions, communicating with engineers of record, and resolving RFIs. That time has a cost — and it scales with the complexity of the projects your detailer is working on. Outsourced detailing firms absorb most of this coordination cost internally, with a single point of contact responsible for the full drawing package.
Category 5: Error and rework costs
In a 2026 environment where steel prices have surged 20.7% year-over-year, detailing errors that require material reorders or field modifications carry an escalated price tag. In-house detailers — particularly those working in isolation without peer review infrastructure — tend to have higher error rates than specialized outsourced firms whose entire business model depends on accuracy. The cost of those errors rarely gets attributed to the detailing function. It gets absorbed into project contingency or fabrication shop overhead.
Running the Numbers: A Worked Example
Consider a mid-sized fabricator with one full-time in-house detailer. Fully loaded annual cost: $100,000. Software and technology: $8,000. Management overhead (estimated at 5% of a project manager’s time): $6,000. Utilization gap (estimated at 20% idle time based on project pipeline variability): $23,000 in cost with no corresponding output. Annual error and rework cost (conservatively estimated at $15,000 across projects): $15,000.
Total true annual cost: approximately $152,000.
Now compare that to outsourced detailing for the same project volume. An outsourced firm, billing at typical market rates for the drawing volume a single detailer produces annually, would likely cost $55,000 to $75,000 — with no software overhead, no idle time, and rework costs largely borne by the firm as part of their quality commitment.
The gap is rarely this clean in practice — there are transition costs, relationship-building time, and legitimate control considerations. But the direction of the comparison is consistent: in-house detailing is almost always more expensive than it appears on paper.
When In-House Makes Sense — And When It Doesn’t
In-house detailing makes strategic sense when you have a consistently high and predictable drawing volume, when proprietary connection standards give you a competitive advantage worth protecting, or when the detailer serves multiple functions (estimating, engineering coordination) that justify the fixed cost.
It makes less sense when your project pipeline is lumpy, when you’re entering new structural project types that require specialized expertise, or when your in-house capability is functioning as a bottleneck rather than a differentiator.
For fabricators whose numbers point toward outsourcing — or who want a hybrid model that keeps light-touch in-house capability while offloading volume and complexity — working with a specialized detailing partner is increasingly the answer the industry is landing on. Steel Step Solutions offers exactly this kind of partnership: precision detailing, AISC-compliant documentation, SDS2 expertise, and the scalability to flex with your project volume — without the fixed overhead of a full-time internal team. Run your numbers. The ROI usually makes the decision for you.