Where colocation usually wins
Colocation is the cleaner answer when the business needs resilient power, cooling, security, and connectivity but does not want to develop and operate the physical plant. It converts a facility program into a contracted service and lets internal teams focus on the IT environment.
- The deployment date matters more than owning the real estate.
- The requirement benefits from established carrier and cloud ecosystems.
- The organization wants a defined recurring cost rather than a major construction program.
- The internal team is not staffed to operate critical electrical and mechanical infrastructure around the clock.
- The footprint may change over the next contract cycle.
Where a private build can make sense
Ownership can be rational at very large, stable scale, especially when the company has specialized infrastructure requirements, long-horizon demand, in-house operating expertise, or strategic reasons to control the entire site. The analysis needs to include more than construction cost.
- Land, entitlement, utility, design, construction, commissioning, and financing.
- Generators, UPS, switchgear, cooling, fire protection, controls, physical security, and network entrances.
- Operations staff, maintenance agreements, testing, spare parts, compliance, and lifecycle replacement.
- Schedule risk, stranded capacity risk, and the cost of designing for growth before that growth is certain.
Comparing a colocation contract only with the initial construction budget understates private-facility cost. Compare complete lifecycle cash flow, staffing, risk, and the value of the delivery timeline.
The middle ground: dedicated infrastructure inside colocation
The choice is not always a shared cage or a ground-up building. Private suites, dedicated halls, build-to-suit capacity, and wholesale colocation can provide greater control and scale while leaving the base facility with an operator. For many large enterprises, that middle ground captures the useful control without creating a new facility operations business.
Five questions that usually settle the direction
- How much power is required now, and how certain is the five-to-ten-year growth curve?
- What is the latest acceptable in-service date?
- Which facility functions are strategically differentiating, and which are simply necessary?
- Does the organization already operate critical electrical and mechanical infrastructure at this scale?
- How should capital flexibility, residual value, and technology change be priced into the decision?
What building actually costs per megawatt
The build side of this comparison is usually the weakest part of a business case, because the capital number is guessed rather than benchmarked. Published figures are available and they have moved sharply.
| Build type | Cost per MW | Notes |
|---|---|---|
| Standard build, 2026 global average | $11.3M/MW | Up 6% from $10.7M in 2025 |
| Standard enterprise range | $8M to $12M/MW | Varies by region and specification |
| Hyperscale build to suit | $11M to $14M/MW | Shell and core |
| AI-optimized, liquid cooled | $15M to $20M+/MW | Excludes the compute hardware itself |
| Brownfield conversion | $7M to $8M/MW | Where suitable existing structure and power exist |
Standard build average from JLL's 2026 Global Data Center Market Outlook; ranges from industry cost benchmarking. Costs rose from roughly $7M per MW in 2020, driven by electrical density, liquid cooling, redundant power trains and commissioning requirements. Figures exclude land, which in Northern Virginia has run $3.5M to $4.0M per acre.
A 1 MW private build is roughly an $11M capital project before land, plus the operating cost and staffing to run it. The same 1 MW leased at $157 per kW per month is about $1.9M a year with no capital outlay, no construction risk and no interconnect queue. Over ten years the cash totals converge, which is exactly why the decision is not about cost alone.
The costs that make a build look cheaper than it is
Build business cases tend to compare a capital number against a lease rate and stop there. These are the items that most often move the answer once included.
- Land: excluded from the per-MW figures above. Northern Virginia has traded at $3.5M to $4.0M per acre, and the best powered sites above $8M.
- The interconnect queue: four to six years in Northern Virginia, and some Chicago projects face dates out to 2031 or later. A build you cannot energize is not capacity.
- Cost escalation during construction: build costs rose 6% in a single year and about 47% since 2020. A multiyear project is exposed to that.
- Commissioning and functional testing: scripted testing is one of the four factors cited for cost growth, and it is frequently underbudgeted.
- Staffing: a facility needs 24 by 7 operations, maintenance contracts and specialist skills you do not need as a tenant.
- Refresh and obsolescence: a facility designed for 8 kW racks in 2020 cannot host 135 kW racks today without substantial rework.
- Utilization risk: you pay for 1 MW of built capacity whether you use 300 kW or 900 kW of it. A lease can be sized and ramped.
That last point is usually the largest single factor and the least discussed. Build economics only beat lease economics at high, sustained utilization. Most enterprise builds run well below the utilization assumed in the model that justified them.
What the market itself is telling you
There is a useful external check on this decision. Sophisticated investors buy and sell data centers constantly, and the prices they pay reveal what capacity is worth against what it costs to build.
| Reference | Figure | What it implies |
|---|---|---|
| Stabilized leased asset, Northern Virginia | About $27.1M/MW | $7.8B across 288 MW at a cap rate above 6.5% |
| Replacement cost, hyperscale build to suit | $11M to $14M/MW | Roughly half what the leased asset traded for |
Transaction detail from Digital Realty's purchase of Blackstone's interest in three Northern Virginia data centers. Full sourcing on the pricing benchmarks page.
A leased, stabilized asset traded at roughly twice its replacement cost. That premium is not paid for concrete. It is paid for energized power and a signed tenant, which are precisely the two things a private build does not have on day one and must acquire at risk. If professional buyers pay double to avoid construction and interconnection risk, an enterprise should think carefully before taking both on to save on paper.
Five conditions that actually favour building
- You already control energized power. An existing site with capacity and a substation relationship removes the largest single risk.
- Utilization will be high and sustained. Above roughly 80% of built capacity for most of the asset life, not in year seven of a projection.
- The requirement is genuinely unusual. A specification no operator will build, for regulatory, security or engineering reasons.
- Scale justifies the overhead. Several megawatts and enough of them to make dedicated operations staffing rational.
- Your cost of capital is low and your horizon is long. Build economics are a financing decision as much as a facilities one.
If fewer than three of those are true, the analysis usually favours leasing, and the middle ground of a dedicated suite or cage inside a colocation facility captures most of the control benefit without the capital or the queue.