Requirements for Building a Data Center: Permits, Power, and Workforce

Before a single shovel hits the ground on a data center project, a long list of requirements must be satisfied. Power, permits, land, connectivity, water, and workforce — each of these represents a potential bottleneck that can delay or derail your project if not addressed early.

This article breaks down the key requirements for building a data center, organized by category. Understanding these requirements upfront will help you plan realistically and avoid the delays that catch first-time builders off guard. For the full construction process, see our comprehensive guide on how to build a data center.

Power Requirements

Power is the single most critical requirement for any data center. Without adequate, reliable power, nothing else matters. Here is what you need to evaluate:

Utility Capacity

The first question is whether the local utility can deliver the power you need. A 20MW data center requires a dedicated utility substation or a connection to a high-capacity transmission line. Key considerations include:

• Available capacity: Does the utility have spare capacity on its system to serve your load? In many markets, the answer is no — at least not without infrastructure upgrades that take years.
• Interconnection lead time: New utility substations can take 24-48 months to build. In some markets, the wait extends beyond 36 months. This is often the longest lead item in the entire project.
• Voltage level: Large data centers typically connect at 34.5kV, 69kV, or 138kV. The available voltage determines your on-site electrical infrastructure design.
• Rate structure: Electricity costs vary dramatically by market and utility. Rates range from under $0.04/kWh in favorable markets to over $0.12/kWh in expensive ones. Over a 20-year facility life, this difference amounts to hundreds of millions of dollars.

Redundancy and Reliability

Data centers require redundant power paths. At minimum, most facilities have:

• Dual utility feeds from independent substations or feeders
• On-site backup generation (diesel or gas generators)
• Uninterruptible power supply (UPS) systems to bridge the gap between utility failure and generator start
• Automatic transfer switches and static transfer switches for seamless failover

The level of redundancy depends on the facility's tier classification and the operator's availability requirements.

On-Site Power Infrastructure

Beyond the utility connection, you need on-site infrastructure including:

• Medium voltage switchgear
• Step-down transformers
• UPS systems
• Power distribution units (PDUs)
• Generators and fuel storage
• Electrical distribution throughout the building

The electrical infrastructure typically represents 35-45% of total construction cost and is the single largest scope of work on the project.

Permitting Requirements

Data center permitting varies dramatically by jurisdiction. Some local governments actively court data centers with streamlined permitting. Others treat them like any other commercial construction project, with lengthy review processes.

Zoning

Your site must be zoned for data center use. Data centers are typically permitted in industrial or heavy commercial zones. Key zoning considerations include:

• Permitted use: Confirm data centers are allowed by right or by special use permit
• Setbacks: Required distances from property lines affect building placement
• Height restrictions: Generator exhaust stacks and cooling towers may trigger height variances
• Noise ordinances: Generators and cooling equipment generate significant noise. Some jurisdictions require noise studies and mitigation measures
• Impervious surface limits: Data centers have large roof footprints and parking areas that generate stormwater runoff

Environmental Permits

Depending on the site and jurisdiction, you may need:

• Stormwater management permits: Required in virtually all jurisdictions for projects disturbing more than one acre
• Air quality permits: Generator emissions may require permits, particularly in non-attainment areas
• Wetlands permits: If the site contains or is adjacent to wetlands, federal and state permits may be required — adding months to the timeline
• Water discharge permits: If the cooling system discharges water, permits are required
• Environmental impact assessment: Some jurisdictions require environmental review for large projects

Building Permits

Standard building permit requirements apply, including review of:

• Structural design
• Electrical design
• Mechanical design
• Fire protection design
• Plumbing
• Accessibility compliance

Building permit review timelines range from 4-6 weeks in data-center-friendly jurisdictions to 4-6 months in more complex regulatory environments.

Land Requirements

Not every piece of land can support a data center. Key requirements include:

Size

A ground-up data center needs more land than many people expect:

• Building footprint: A 10MW data center building is typically 60,000-100,000 square feet
• Equipment yards: Generators, cooling towers, and transformers require significant outdoor space
• Parking: Construction parking during the build phase, plus operational parking
• Setbacks: Required distances from property lines
• Future expansion: Most operators want room to expand on the same campus

A 10MW data center might need 5-10 acres. A 100MW+ campus might need 50-100+ acres.

Soil and Geotechnical Conditions

The soil must support the building loads without excessive settlement. Key geotechnical requirements:

• Adequate bearing capacity for foundations
• Acceptable settlement characteristics
• No problematic soil conditions (expansive clay, organic soils, high water table)
• Suitability for construction equipment access

If the soil is poor, deep foundations (piles or piers) may be required, adding cost and time.

Access

The site must be accessible for:

• Heavy equipment during construction (cranes, concrete trucks, steel trucks)
• Oversized loads (large transformers can weigh 100,000+ pounds)
• Emergency vehicles
• Fuel delivery trucks for generators
• Regular operations and maintenance vehicles

Connectivity Requirements

Data centers need robust network connectivity. Requirements include:

• Fiber optic access: Multiple fiber providers serving the site or nearby
• Path diversity: Physically diverse fiber routes for redundancy
• Latency: Acceptable latency to major network hubs, cloud on-ramps, and end users
• Carrier neutrality: The ability to bring in multiple carriers and internet service providers

In established data center markets like Northern Virginia, fiber infrastructure is abundant. In emerging markets, you may need to arrange fiber builds to reach your site, which adds time and cost.

Water Requirements

Most data centers use water for cooling, either directly through evaporative cooling systems or indirectly through cooling towers. Water requirements include:

• Municipal water supply: Adequate volume and pressure for cooling operations
• Water quality: Chemical composition affects cooling system performance and maintenance requirements
• Backup water supply: Some facilities maintain on-site water storage for operational continuity
• Discharge permits: Cooling system blowdown water must be managed per local regulations

Water usage has become an increasingly sensitive topic for data center operators. Water-efficient cooling designs (air-cooled chillers, closed-loop systems) reduce or eliminate water consumption but typically come with higher capital or energy costs.

Workforce Requirements

Workforce availability is a requirement that is often treated as an afterthought — but it should be a first-order consideration during site selection and planning.

Construction Workforce

Building a data center requires hundreds of skilled tradespeople at peak construction. A 10MW facility might need 400-600 workers during the MEP installation phase. Key trades include:

• Electricians (largest trade by hours on most data center projects)
• Pipefitters and plumbers
• Ironworkers and structural steel erectors
• Concrete workers
• Sheet metal workers
• Cable technicians and low-voltage installers
• Commissioning technicians

Workforce as a Site Selection Factor

In markets with heavy data center construction activity, skilled workers are in short supply. If you are evaluating sites in a market where five other data centers are under construction simultaneously, understand that you will be competing for the same limited pool of workers.

A specialized data center construction staffing partner can help you assess workforce availability in candidate markets and develop a realistic labor plan before you commit to a site.

Operations Workforce

After construction, you need staff to operate and maintain the facility. While the operations workforce is much smaller than the construction workforce (typically 15-30 people for a 10MW facility), these roles require specialized skills and experience that can be difficult to find in some markets.

How Requirements Interact

These requirements do not exist in isolation — they interact and sometimes conflict:

• The best power availability may be in a location with poor fiber connectivity
• The cheapest land may be in a jurisdiction with complex permitting
• The most fiber-rich markets may have the most constrained labor pools
• Water-rich locations may have environmental permitting challenges

Successful data center development requires balancing these requirements against each other and against your business priorities. There is no perfect site — only sites that are good enough across all requirements and excellent on the ones that matter most to your specific project.

Getting Started

The requirements checklist for building a data center is long, but it is well understood by experienced development teams. The key is to start evaluating these requirements early — during the concept phase, not after you have committed to a site.

Cortex Construct addresses one of the most critical requirements: the skilled construction workforce. We provide pre-vetted, experienced tradespeople in every major data center market, helping builders meet their workforce requirements without compromising quality or schedule. Contact our team to discuss your project's workforce needs.