Labor Is the Least Predictable Line Item in a Data Center Budget

Labor is the least predictable line item in a data center budget because it is priced as an estimate of hours at bid time and confirmed only after the work is done, while major equipment is typically quoted, ordered, and scheduled months in advance. In Dallas-Fort Worth, where data center development is running at a scale few markets match, that uncertainty grows as more projects compete for the same electricians, pipe fitters, and supervisors. Developers, owners, and investors who understand where labor variance comes from are better positioned to read budgets, schedules, and contractor pricing with realistic expectations.

DFW demand puts pressure on the trades

The Dallas-Fort Worth market has become one of the most active data center regions in North America. CBRE’s North America Data Center Trends report on the Dallas-Ft. Worth market describes Dallas as a 1 GW colocation market with an overall vacancy rate of 2.4%. The report counts approximately 700 MW of colocation space under construction, 94.5% of it preleased, with an additional 3 GW of new greenfield development planned. It also notes that high demand continued to throttle power delivery in the region.

Every one of those projects needs skilled trades, and the regional labor pool does not expand at the same pace as demand. The AGC and NCCER 2026 Workforce Survey results found that 28 percent of respondents performed construction work on a data center project during the past 12 months, and 58 percent say data center projects have increased competition for skilled workers. Among firms with openings for hourly craft positions, 88 percent report that those positions are as hard or harder to fill than a year ago.

For a developer, that competition shows up in bid pricing, crew availability, and the pace at which trade contractors can staff a project once it breaks ground.

Why labor behaves differently from equipment

Equipment and materials carry real price risk, but much of that risk is visible early. Switchgear, generators, and cooling units are specified, quoted, and procured under contract. Their prices can move, yet once a purchase order is signed, the number is largely known.

Labor works differently. A contractor’s bid converts scope into an estimate of hours, applies wage and burden rates, and assumes a level of productivity. The actual hours depend on crew size, overtime, site access, weather, design changes, and how quickly each trade can move through the building. None of those factors are fully knowable at bid time, and the actual number arrives only as timesheets are processed, often weeks after the work was performed.

Analyses of data center construction costs point to labor as the largest controllable cost on self-performed scope, because a single misreported hour carries through burden calculations, cost codes, future estimates, and billing. An error that looks small on one timesheet becomes a pattern when it repeats across hundreds of workers and dozens of pay periods.

Market-wide pricing reflects that uncertainty. Turner & Townsend’s Data Centre Construction Cost Index 2025 cost trends analysis reports a 5.5 percent increase in the cost per watt of building a traditional air-cooled data center, following a 9.0 percent increase the prior year. Nearly half of survey respondents (47%) reported bid price increases between 6 and 15 percent over the past year, and a further 21% reported increases above 15 percent.

Competition for trades is measurableIn the AGC and NCCER 2026 Workforce Survey, 58 percent of respondents said data center projects have increased competition for skilled workers, and 88 percent of firms with craft openings said those positions are as hard or harder to fill than a year ago.

Wages, overtime, and the electrician market

Electrical scope sits at the center of most data center budgets, and the electrician workforce is under steady pressure. The Bureau of Labor Statistics Occupational Outlook Handbook profile for electricians reports a median wage of $30.38 per hour, or $63,190 per year, as of May 2025, with about 821,000 jobs nationally. BLS projects employment to grow 9 percent from 2025 to 2035, much faster than the average for all occupations, with about 72,700 openings each year. The profile also notes that overtime is common in the trade.

Wage pressure is showing up in contractor pay decisions as well. The AGC and NCCER survey found that more than eight in 10 firms increased base pay for hourly craft and salaried workers as much as or more than they did a year earlier. On a compressed data center schedule, premium time adds to that effect, because overtime hours cost more than straight time and can reduce productivity when crews work extended stretches.

Where labor variance hides

Labor budgets rarely miss because of a single event. More often, small variances accumulate across several areas.

Hours coded to the wrong activity

When hours land on the wrong cost code, the budget report shows one activity over and another under. The total may look reasonable while the information needed to manage the job is wrong, and future bids built on that history inherit the error.

Attendance recorded from memory

Paper sign-in sheets and end-of-day time entry depend on memory and manual transcription. On large sites with hundreds of workers, even occasional errors add up across a pay period.

Overtime that is approved after the fact

Schedule pressure makes overtime likely. When it is authorized informally and recorded later, the cost appears in reports only after it has been incurred, which limits the chance to adjust staffing.

Time and materials work without backup

Change work billed on a time and materials basis needs records that show who worked, when, and on what. Thin documentation tends to lead to disputes, delayed payment, or write-offs that erode the margin a contractor expected.

Delays from staffing shortages

The AGC and NCCER survey found that 42 percent of respondents reported that shortages of their own workers or subcontractors’ workers have delayed projects. Delays extend general conditions and supervision costs, which adds to the labor line even when direct work hours hold steady.

What owners and developers can ask of trade partners

Developers and owners do not control a contractor’s timekeeping, but they can set expectations that make labor costs more transparent and easier to evaluate:

• Ask how bidders build labor estimates, including productivity assumptions, crew sizes, and overtime allowances.
• Request periodic labor reports broken out by cost code, in addition to percent complete.
• Set documentation standards for time and materials work before the first change order is issued.
• Discuss staffing plans for peak phases and how the contractor will respond if the regional labor market tightens further.
• Review how attendance and hours are recorded on site, and how quickly those records reach the contractor’s project managers.

Reading a data center budget with labor in mind

Dallas-Fort Worth’s data center pipeline is large, heavily preleased, and dependent on a skilled workforce that many contractors are competing to hire. Equipment prices matter, but labor is where the difference between estimated and actual cost is most likely to widen once construction begins. Developers and owners who treat labor as a line item to monitor throughout the project, and who expect accurate, timely labor data from their trade partners, are in a stronger position to keep that line close to plan.