Real Estate, Specialty & Niche

How to Underwrite a Data Center Property

Underwrite a data center on power, tenants and infrastructure. Confirm utility power capacity and delivery timeline, cooling and redundancy, then analyze tenant credit, lease term and rent per kilowatt. Key metrics are contracted critical IT load, rent per kW, weighted lease term, tenant credit quality, utility cost pass-through and debt yield.

What makes data center underwriting different

Data centers are priced and leased by power rather than square footage. Value depends on secured utility capacity, the speed at which power can be delivered, cooling capability, redundancy level and fiber connectivity. Hyperscale facilities are often leased to a few large cloud or technology tenants on long-term leases, while colocation facilities lease smaller amounts of capacity to many customers on shorter contracts. Building cost per megawatt is very high, and mechanical and electrical systems represent much of the investment. Risk comes from power availability, equipment obsolescence as rack densities rise, and tenant concentration.

Lenders treat stabilized hyperscale facilities leased to investment-grade tenants much like credit tenant lease deals, focusing on lease term, tenant credit and the landlord's obligations for systems. Colocation facilities are underwritten more like operating businesses, with attention to churn, pricing and customer diversification. Equity investors focus on access to power, development pipeline, yield on cost and the ability to expand on adjacent land. They also weigh the risk that a tenant's technology needs change, requiring costly retrofits for higher density or liquid cooling. Power contracts and utility relationships are central to both views.

Key metrics

Contracted Critical IT Load

Leases are sized in kilowatts or megawatts of critical load, which defines revenue capacity.

Rent per kW

Pricing per kilowatt is the standard unit of comparison between data centers.

Weighted Average Lease Term

Long hyperscale leases provide durable income, while colocation contracts turn over more often.

Lenders typically prefer hyperscale lease terms extending well past loan maturity.

Tenant Credit and Concentration

A few tenants may account for most revenue.

Power Usage Effectiveness (PUE)

Measures energy efficiency, which affects operating cost and tenant appeal.

Lower PUE indicates more efficient facilities, and newer facilities generally target lower figures than older ones.

Debt Yield

Protects lenders given high construction costs and valuations.

How to underwrite it, step by step

Confirm utility power capacity, delivery schedule and interconnection agreements.
Inspect electrical, cooling and redundancy systems and assess remaining useful life.
Abstract leases for term, rent per kW, power pass-through and landlord obligations.
Analyze tenant credit and concentration.
Review fiber connectivity and network carriers.
Assess market demand, competing supply and expansion land.
Size debt on contracted NOI and stress tenant non-renewal.
Set reserves for equipment replacement and covenants tied to tenant events.

Due diligence checklist

Leases and service agreements
Tenant financial statements or ratings
Utility power agreements and capacity letters
Electrical and mechanical system specifications
Engineering inspection report
Fiber and carrier agreements
Power usage and PUE reports
Operating expense and utility cost history
Expansion land and zoning documentation
Phase I environmental site assessment
Insurance documentation
Appraisal

Key risks and mitigants

Utility power is delayed or capacity is insufficient for expansion.

Confirm utility commitments in writing and underwrite only contracted capacity.

Tenant concentration with one or two hyperscale users.

Analyze tenant credit, lease term and termination rights.

Technology changes require costly retrofits for higher density.

Assess design flexibility and budget for upgrades.

Electrical or cooling equipment failure causes outages and service level credits.

Review redundancy design, maintenance records and SLA credit exposure in customer agreements.

Energy costs rise and are not fully passed through to tenants.

Confirm power cost pass-through provisions in leases and review utility tariffs and supply contracts.

Typical financing and deal structure

Data centers are financed with construction loans, bank loans, CMBS and ABS securitizations, and private credit. Stabilized hyperscale facilities with long leases to strong tenants can access favorable terms. Development is typically funded with construction loans and large equity commitments from institutional investors, often through joint ventures with specialized developers. Some operators use sale-leasebacks or securitization of lease cash flows. Covenants typically include tenant concentration limits, equipment reserves, DSCR minimums and restrictions on lease amendments. Power purchase agreements and utility commitments are often conditions precedent to funding. Lenders may also require step-in rights on key utility and service contracts.

Red flags

Unconfirmed utility capacity or delivery schedule.
Single tenant lease expiring before loan maturity.
Aging electrical and cooling systems without replacement budget.
Tenant termination rights tied to service failures.
Location without diverse fiber connectivity.

Frequently asked questions

Why are data centers priced per kilowatt?

Data center tenants care most about the power capacity available for their computing equipment, so leases are priced per kilowatt of critical IT load rather than per square foot. Power determines how much computing can occur. Rent per kW allows comparison across facilities with different densities and layouts.

How do lenders underwrite data centers?

Lenders evaluate tenant credit, lease term, power capacity, infrastructure condition and landlord obligations. Hyperscale facilities with long leases to strong tenants are underwritten similarly to credit tenant leases. Colocation facilities are underwritten more like operating businesses, with attention to churn and customer diversification. Debt yield and DSCR are common sizing tools.

What is the difference between hyperscale and colocation?

Hyperscale data centers serve large cloud and technology companies that lease entire buildings or large blocks of capacity on long-term leases. Colocation facilities lease smaller amounts of space and power to many customers on shorter contracts. Hyperscale offers tenant concentration but long terms, while colocation offers diversification but more churn.

What is PUE?

Power usage effectiveness is the ratio of total facility energy use to energy used by IT equipment. A lower PUE means less energy is spent on cooling and overhead. Efficient facilities can attract tenants and reduce operating costs, so underwriters review PUE when assessing competitiveness and expense exposure.

Underwrite a data center deal in minutes

Drop a deck or data room. Underridge returns a verdict, investment memo, term sheet and a live model, with every headline figure traced to a page, a formula or a labeled assumption. Ten underwrites free.

Try Underridge free

Educational content, not investment, credit, legal or tax advice. Benchmarks are common practitioner rules of thumb and vary by lender, market and cycle.