A data center estimate looks different from an office or warehouse estimate. In a typical commercial building the structure and finishes carry most of the cost. In a data center the building is a container for power and cooling, and those systems drive the budget. Estimators who price these projects like ordinary commercial work tend to miss badly.
This post walks through how a data center estimate is organized, what goes into each part, and where the measurement effort goes. It does not give unit prices. Rates change quickly and depend on the market, so the sensible approach is to use quotes dated close to your bid. For top-down budgets, start with how much it costs to build a data center in 2026.
The parts of the estimate
Most data center estimates split into six areas. Sitework and civil come first: clearing, grading, stormwater, utilities, paving and, on large campuses, substations and long underground runs. Then the building shell, which means foundations, structural steel or precast, roofing and the envelope. Interior fit-out is smaller than in an office but still includes data hall finishes, raised floor where used, office and support space, and security.
The remaining three are the ones that matter. Electrical covers utility service, medium voltage distribution, switchgear, generators, UPS systems, batteries, power distribution units, busway, cable and grounding. Mechanical covers the cooling plant, air handling or liquid cooling distribution, piping, pumps, heat rejection and controls. Fire protection and low voltage cover detection, suppression, access control, cameras and structured cabling pathways.
In most published breakdowns, electrical and mechanical systems together outweigh the building shell. The exact split depends on design and on what the author counts, so use any ratio you read as a sanity check and nothing more.
Where the takeoff effort goes
Most of the hours go into the systems that are drawn schematically. Single-line diagrams show how power flows, but the cable lengths depend on routing that you have to work out from the plans. Piping on mechanical drawings is also not always shown to scale. The estimator has to build a routing model, measure it, and add fittings, supports and hangers that the drawings never list.
Repetition helps. A data hall is often a set of identical modules, so once a module is measured carefully the quantities can be reused, with adjustments at the edges. That makes the first module the one worth checking twice.
Our guide on quantity takeoff methods and examples covers the general workflow. The data center version adds longer cable and pipe runs and a much heavier equipment schedule.
Equipment: price it from quotes
Major equipment is the line most likely to be wrong by the time you build. Switchgear, generators, chillers and UPS units are bought, not built, and prices and lead times shift. The Cushman and Wakefield guide reported switchgear costs up about 60% between December 2021 and early 2026. If your estimate uses a catalog price from last year, it is already stale. Get current vendor quotes, record the quote date and validity, and carry an allowance for items you cannot get priced yet. The long-lead procurement guide covers this in more detail.
Indirect costs and risk
Data center projects often run long and with dense trade stacking, so general conditions deserve attention. So does commissioning, which on these facilities can be a substantial scope with integrated testing across electrical, mechanical and controls. Labor is tight in the markets where data centers cluster, and the Associated General Contractors reported in September 2026 that data center demand is straining the craft workforce. That affects both wage assumptions and productivity. See labor cost estimating for how to document those assumptions, and cost contingency for how to size risk.
A checklist for reviewing a data center estimate
- Does the estimate state the capacity in MW and the cooling approach it assumes?
- Are the major equipment lines backed by dated quotes?
- Is the utility interconnection included or clearly excluded?
- Are commissioning and integrated testing priced?
- Do cable and pipe lengths come from a routing takeoff, not a per-square-foot guess?
- Is escalation to the construction date stated?
Related reading by system
The electrical side is covered in electrical estimating for data centers, and the mechanical, plumbing and fire protection side in data center MEP estimating. For power delivery on the utility side, see substation estimating scope and materials.
Common questions
What is the biggest cost in a data center?
Usually the electrical and mechanical systems, not the building. The split varies by design, so check what any published breakdown includes.
Can I estimate a data center from a square-foot cost?
For a rough budget, maybe. For a bid, no. Power density changes cost too much for area alone to work.
Getting the MEP scope measured
If you need the mechanical, electrical and plumbing quantities for a facility like this, our MEP estimation and electrical estimation teams can take them off, and our quantity and material takeoffs cover the civil and structural side. Send the drawings over for a quote.
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