NAIOP Reports on How Brownfields Offer Opportunities for Data Center Development  

Executive Summary

Brownfield sites are gaining traction in data center development — but the opportunity requires careful underwriting. 

• Power infrastructure already in place reduces entitlement risk and compresses timelines vs. greenfield alternatives 
• Legacy contamination and CERCLA liability make structured transactions and thorough due diligence non-negotiable 
• Firms that can accurately model remediation costs and environmental obligations will have a meaningful competitive edge 

Why Brownfields Are Attracting Data Center Developers

With power availability now outranking land cost as the top criterion in data center site selection, sites with existing infrastructure have become highly competitive.

Brownfield properties often offer: Grid adjacency — proximity to high-voltage transmission already in place Established rights of way and zoning compatible with industrial-scale operations Access to water and other utilities required for cooling systems Community and regulatory familiarity with industrial use on the site

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For data center developers under pressure to compress timelines, these built-in advantages can meaningfully reduce entitlement risk and utility lead times compared to greenfield alternatives. 

The Environmental Risk Equation

Brownfield advantages come with a significant caveat: legacy contamination. Environmental issues can range from minor (asbestos-containing materials in older buildings) to substantial (soil or groundwater contamination from decades of industrial operations). Under CERCLA — the federal Superfund law — current and former owners and operators may face joint and several liability for contamination, regardless of fault. That exposure can follow a transaction if it is not properly structured and documented. 

Key due diligence questions for prospective buyers include: How has the site’s historical use affected soil and groundwater conditions? Is there evidence of off-site migration or risk to neighboring properties? Has the site been enrolled in a state or federal remediation program? Is there legacy infrastructure — underground piping, transformers, building materials — that requires removal? What permits exist, and do they pose challenges or create opportunities?

Diligence tools typically include database searches, historical aerial photographs, site visits, and a review of existing permits and remediation records. 

Deal Structure: How Liability Is Allocated

Brownfield transactions are almost always structured as asset sales rather than leases or stock transactions — a critical distinction for liability management. Sellers typically seek to transfer environmental responsibility to buyers, while buyers need contractual protections that clearly define the scope of what they are assuming. Well-negotiated deal structures address: 

• Representations and warranties covering known and unknown environmental conditions 
• Post-closing covenants that specify ongoing remediation obligations 
• Parent guarantees where the counterparty’s financial standing is in question 
• Enrollment in state brownfield programs that can limit or cap future liability 

What This Means for PE Real Estate Firms

The data center brownfield thesis is compelling, but it rewards firms with the operational rigor to underwrite it properly. The sites that clear the bar share a consistent profile: industrial zoning, a viable power path, manageable remediation scope, and local stakeholder alignment. For asset managers tracking these opportunities, the ability to quickly and accurately model deal economics — including remediation cost contingencies, entitlement timelines, and ongoing environmental obligations — is a meaningful competitive advantage.

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As NAIOP’s authors note, the tools, programs, and contracting frameworks to make brownfield data center projects work are already available. The firms that move decisively with the right analytical infrastructure will be positioned to capture the upside.