Data Center Work Is Warping the Equipment Market

Construction backlog is rising again, but the story is not as simple as “contractors are busy, so equipment demand goes up.”

Associated Builders and Contractors reported on June 16 that its Construction Backlog Indicator rose to 9.1 months in May. That was up 0.3 months from April and 0.7 months from May 2025. ABC said backlog increased in every region except the South, which still had the longest backlog and the largest year-over-year gain.

That sounds like a clean demand signal. It is not. ABC also said contractor confidence for sales, profit margins, and staffing slipped in May, even though all three readings remained above the growth threshold.

The split matters for equipment owners. More backlog usually means more need for iron, rental support, technicians, attachments, trucks, and cash. But when the work is concentrated in specific project types, the buying signal gets messy. Data centers are pulling the market in one direction. Smaller commercial jobs, local sitework, municipal work, and everyday contractor backlogs may feel very different.

FieldFix Editor’s Note: Backlog can make a fleet look underpowered, but the real question is whether each machine is earning enough to justify the payment, repairs, fuel, and downtime. FieldFix helps equipment owners track service history, repair costs, downtime, and cost per hour by machine, so fleet decisions are based on numbers instead of gut feel.

The data center effect is real

ABC tied much of the May backlog jump to data center construction. According to the association, 14% of its members were under contract to work on data centers. Those contractors reported 11.6 months of backlog, compared with 8.6 months for contractors that were not working on data centers.

That gap is the market in miniature.

Data centers are their own building category. They are large, power-hungry, schedule-sensitive projects with heavy sitework needs, utility work, concrete packages, grading, hauling, electrical infrastructure, backup power systems, and a long list of supporting trades. They can pull in large civil contractors, crane providers, rental companies, material handlers, truck fleets, service providers, and specialized subcontractors.

They also reward scale. A contractor with a deep fleet, bonding capacity, project controls, safety infrastructure, managers, and the ability to staff several crews can chase work that a smaller contractor cannot touch. That does not make smaller contractors weak. It means the demand signal is uneven.

If you are a dealer or rental house, data centers can soak up machines fast. Excavators, dozers, loaders, compact track loaders, rollers, water trucks, telehandlers, light towers, generators, pumps, trenchers, service trucks, and attachments can all get pulled into long project windows. The same machine that might have turned over every few weeks in a normal rental cycle may sit on one job for months.

That is good utilization. It can also starve the rest of the local market if the rental fleet is not large enough.

Backlog is not the same as margin

The uncomfortable part of ABC’s May release is that backlog rose while confidence slipped. That is not a contradiction. Contractors can be busy and still nervous.

High backlog means there is work under contract. It does not guarantee the work is priced well, staffed well, supplied well, or protected from cost changes. If equipment costs rise, labor gets tight, materials move, financing stays expensive, or a project drags, a strong backlog can still turn into a margin problem.

That distinction should shape how contractors buy equipment in 2026.

There is a temptation to see 9.1 months of backlog and assume it is time to add machines. Sometimes it is. A contractor with signed work, reliable operators, strong utilization, and a clear job cost model may need to buy. A contractor with one hot bid board and a vague plan probably needs to slow down.

The better question is not “Do we have enough equipment?” It is “Which machine is actually limiting revenue?”

For site contractors, that might be a dozer that cannot keep up with grading demand, an excavator class that is always rented, or a compact track loader that is running too many hours across too many small jobs. For utilities, it might be trenching, vacuum excavation, trucks, or support equipment. For concrete and commercial contractors, it may be telehandlers, lifts, skid steers, generators, and material handling gear.

Buying the wrong machine during a strong market is still a bad buy. The payment does not care that the market looked healthy when the signature went on the paperwork.

Finance data says buyers are still active

The equipment finance side is not dead. Far from it.

ELFA’s April CapEx Finance Index, released May 26, showed total new business volume of $10.6 billion on a seasonally adjusted basis. Year-to-date new business volume was up 15% from the same period in 2025, and ELFA said equipment demand was still on pace for its strongest year.

That is a real signal. Buyers are still financing equipment. Banks, captives, and independent finance companies are still seeing deal flow. ELFA also reported that credit approvals remained healthy, with the industry-wide approval rate at 77.1% in April.

At the same time, demand cooled from the prior month. That combination feels about right for this market. Contractors and businesses are still investing, but they are not buying with 2021-style urgency. The cost of capital is still part of the decision. So is cash flow. So is the fear of getting stuck with a machine that looked necessary during a busy month and then sat too much during a slower one.

ELFA’s May confidence reading also improved. A May 2026 Monthly Confidence Index summary put the index at 59.9, up from 54.6 in April. The same summary said more respondents expected capital expenditure financing demand to increase over the next four months, while none expected demand to decline.

Put those numbers next to ABC’s backlog report and the picture gets clearer. Work is out there. Financing is available for qualified buyers. Confidence is not terrible. But the winners are the owners who can match equipment decisions to real workload instead of chasing the headline.

Rental fleets may feel the pressure first

Data center work can make rental markets feel tight before the sales market fully reacts.

Large projects often prefer rental for support equipment, specialized needs, and schedule flexibility. Even contractors with large owned fleets may rent extra units when several jobs overlap. A data center package can tie up telehandlers, generators, light towers, compaction equipment, compact machines, pumps, trench safety gear, and aerial equipment for long stretches.

That creates two problems for smaller contractors.

First, the machine they usually rent may not be available when they need it. Second, the backup option may be more expensive, farther away, or a poor fit for the job.

This is where buying starts to look tempting. If a contractor cannot reliably rent a compact excavator, CTL, roller, or telehandler during peak season, ownership starts making more sense. But the math still has to work after the data center project down the road stops absorbing every available rental unit.

A short rental crunch should not automatically become a five-year payment.

The practical move is to track missed rentals and rental substitutions. Which machines were unavailable? How many days did that cost? Did the substitute machine slow the crew down? Did the rental price change the job margin? Did the crew rent the same size class enough times to justify owning?

That record matters more than a vague memory of a busy spring.

Dealers should be honest about allocation

Dealers are in a tricky spot. They want to serve big accounts tied to large projects, but they also need to protect the smaller contractors who keep the parts counter, service department, rental desk, and used-equipment pipeline healthy year after year.

If data center work is pulling inventory, dealers need to talk plainly with customers about lead times, rental availability, and service capacity. Contractors can handle bad news better than surprises.

The same goes for parts and technicians. A market with rising backlog can create more emergency repairs, more preventive maintenance demand, more inspections, and more pressure on field service trucks. If a dealer’s rental fleet is hot and its service department is overloaded, an owner buying another used machine may be taking on more risk than expected.

Support capacity is part of the purchase. A machine is more than horsepower and hydraulics. It is parts flow, technician availability, warranty speed, loaner access, rental backup, and the dealer’s ability to keep communication clean when something breaks.

That is especially true for contractors who are buying used iron to avoid higher new-machine prices. Used equipment can be the right move, but it needs a maintenance plan and a realistic view of repair exposure. A cheap machine that misses the first two weeks of a critical job is not cheap.

Smaller contractors need a different playbook

Large contractors working data centers may have enough backlog to support fleet expansion. Smaller contractors need a more defensive playbook.

That starts with utilization. If a machine is consistently above 70% to 80% utilization during work weeks and rental substitutes are hard to get, ownership may be worth a serious look. If a machine is only busy during one type of job or one season, renting may still be the cleaner answer.

It also means separating bottleneck machines from convenience machines.

A bottleneck machine unlocks revenue. If the right excavator, dozer, loader, or truck lets the crew complete more work with the same labor, it may deserve capital. A convenience machine mostly reduces annoyance. It may still be useful, but it should not beat out repairs, attachments, cash reserve, or the one machine that actually changes production.

Contractors should also look hard at attachments before adding carriers. The right attachment can increase the usefulness of a machine already in the fleet. The wrong attachment is yard art with hydraulic hoses.

That does not mean every attachment needs to be rented first, but it should be tied to sold work or repeatable work. Buying for a job type you want to sell is a gamble. Buying for a job type already showing up in the schedule is a plan.

The market is strong, but selective

The May backlog number is good news for the construction economy. It is also a warning that averages can hide a lot.

Data centers are creating real demand, but that demand is not evenly distributed. Equipment finance activity is strong, but capital still has a cost. Rental fleets may stay tight in certain categories, but that does not make every ownership decision smart. Dealers may see strong demand, but support capacity will decide how much of that demand turns into loyal customers.

For contractors, the move is simple and boring: buy the machine that removes a proven bottleneck, rent the machine that solves a temporary spike, and keep enough cash to survive the repair that always seems to arrive at the worst possible time.

Backlog is back near a multi-year high. That is useful information. It is not a permission slip to buy iron without math.