Florida Data Center Development Leverages Existing Buildings for Efficiency

Executive Summary

Hillwood Development Company has filed a building permit application to convert two existing structures into a data center on a 75-acre site in Auburndale, Polk County, Florida. The project signals a growing preference among developers for adaptive reuse over ground-up construction — a strategy that compresses timelines, reduces material costs, and can simplify regulatory review. Developers and investors with existing industrial or commercial assets in Florida's high-growth corridors stand to benefit from this model. Traditional greenfield data center developers who haven't adapted their approach may find themselves at a cost and speed disadvantage. The InfraSale takeaway: existing building inventory in power-accessible Florida markets deserves a fresh look as data center feedstock.

What Happened

Hillwood Development Company filed a building permit application to develop a data center inside two existing buildings on a 75-acre site in Auburndale, Florida. Auburndale sits in Polk County, a mid-state market positioned between Tampa and Orlando along the I-4 corridor — one of the most infrastructure-active growth belts in the southeastern United States.

The application targets existing structures rather than proposing new construction, an approach that sets this project apart from the majority of hyperscale and mid-market data center developments currently in the Florida pipeline. No specific megawatt capacity, construction timeline, or project cost was disclosed in the filing details available at the time of reporting.

The permit application represents an early-stage regulatory action. Full project scope, utility coordination, and interconnection requirements will become clearer as the application moves through Polk County's review process.

Source: The Ledger

Why This Matters

The Hillwood filing is a small data point with a large signal. Across the country, data center developers are running into the same wall: greenfield sites take too long to permit, too long to build, and compete intensely for a constrained pool of grid capacity. Converting existing buildings sidesteps several of those constraints at once.

Polk County is not a traditional data center hub. Northern Virginia, Phoenix, Dallas, and Chicago dominate national colocation and hyperscale activity. But Florida's population growth, favorable tax treatment of data center equipment in certain configurations, and proximity to subsea cable landing points on both coasts make it increasingly competitive. Auburndale's I-4 corridor location provides logistical advantages and access to Florida's major load centers.

Industry context: Adaptive reuse for data centers is an emerging but accelerating strategy. Former manufacturing plants, big-box retail, and warehouse facilities have been successfully converted in markets including Chicago's former industrial belt and suburban New Jersey. Hillwood's move in Auburndale fits that playbook and brings it to a secondary Florida market.

The broader implication is market validation. When an institutional-grade developer like Hillwood files in a secondary market using a non-standard development strategy, it typically signals that primary markets have become too expensive or too congested to absorb additional demand efficiently.

Power & Interconnection Impact

Data centers are among the most power-intensive land uses in commercial real estate. A facility of meaningful scale — even a mid-market build — can require anywhere from 10 MW to 100+ MW of dedicated power. The existing buildings at the Auburndale site were not designed for that load profile, which means utility upgrades are almost certainly part of the project's development path.

Assumption: Duke Energy Florida is the likely serving utility for the Auburndale area. Any material power load addition would require coordination with Duke on substation capacity, service voltage, and potentially new transmission infrastructure depending on the final MW ask.

Polk County is not known for deep interconnection queue activity in the same way as Florida's coastal markets, which could actually work in Hillwood's favor. Less queue congestion may translate to faster interconnection timelines. That said, the structural condition of existing electrical infrastructure serving the site — not just the grid at large — will be a key diligence item for any investor or lender underwriting this project.

Land, Zoning & Permitting Impact

Working within existing buildings does not eliminate permitting complexity — it redirects it. Rather than fighting battles over site plan approval, environmental impact, and new construction standards, Hillwood's team will likely focus on change-of-use determinations, structural load assessments, fire suppression and cooling system compliance, and any applicable Polk County overlay or industrial zoning requirements.

Assumption: If the existing buildings are already zoned for industrial or heavy commercial use, the change-of-use pathway to data center operations is typically more straightforward than a full rezoning. However, local municipalities increasingly impose conditions on large power users, including backup generator noise ordinances, water use restrictions for cooling, and traffic impact fees.

The 75-acre site provides meaningful buffer and flexibility for ancillary infrastructure — transformer yards, cooling towers, fiber ingress, and security perimeters — without requiring additional land acquisition. That footprint is a genuine asset in the permitting process, reducing the likelihood of neighbor-driven opposition that often delays new construction projects in tighter suburban contexts.

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Investment Takeaway

Adaptive reuse compresses development timelines. Conversion projects can reach operational status faster than greenfield builds, which is a critical advantage in a demand environment where enterprise and hyperscale tenants are willing to pay premiums for speed-to-power.
Secondary Florida markets are repricing. Polk County's position between Tampa and Orlando puts it inside two of the fastest-growing metro areas in the U.S. As primary market capacity tightens, capital will follow demand into adjacent corridors.
Existing building inventory is an underpriced input. Industrial and warehouse assets in power-accessible Florida counties should be re-evaluated for data center conversion potential. Cap rate compression in this use case is likely.
Power access remains the gating constraint. The investment thesis on any conversion project lives or dies on utility confirmation of available capacity and interconnection timeline. Underwrite power first, structure second.
Permitting risk is real but manageable. Change-of-use applications carry their own regulatory uncertainty. Investors should model a permitting timeline buffer of 6–18 months depending on local jurisdiction responsiveness and any required conditional use hearings.

InfraSale Market Angle

For developers and capital allocators watching Florida, the Hillwood filing in Auburndale is a prompt to audit existing asset portfolios — not just greenfield land banks. The question is no longer only "where can we build?" but "what do we already own or can acquire that reduces the development cycle?"

This is particularly relevant to developers who hold industrial properties along Florida's I-4, I-75, and I-95 corridors. A building that was underwritten as warehouse or light manufacturing may now pencil better as a data center shell, especially if it sits within range of a substation with available capacity.

For local governments in Polk County and similar secondary markets, projects like this represent a tax base expansion opportunity. Data centers generate significant property tax revenue and utility revenue with comparatively low municipal service demands — a favorable trade from a fiscal impact standpoint.

Market Signal

Location: Polk County, Florida
Primary Issue: data center development efficiency
Infrastructure Theme: zoning and permitting
Who Benefits: developers and local tech companies
Who's at Risk: traditional construction firms lacking adaptability
InfraSale Takeaway: Developers should explore existing structures for future data center projects to enhance sustainability and reduce costs.

Take Action

The Hillwood filing in Auburndale is early-stage, but the market signal it sends is actionable now. Developers and landowners with existing structures or powered sites in Florida's high-growth corridors should position assets for the data center demand wave before primary markets overflow further into secondary geographies. Run the site evaluation, confirm power availability, and get assets in front of the right buyers.

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FAQ

What are the benefits of repurposing existing buildings for data centers?

Adaptive reuse eliminates the time and cost associated with ground-up construction, including foundation work, structural framing, and exterior envelope. Existing buildings often come with established utility connections and site infrastructure that can be upgraded rather than built from scratch, reducing both capital expenditure and development timelines. From a sustainability standpoint, reuse also avoids the embodied carbon costs of new construction materials.

How does local zoning affect data center development?

Zoning determines whether a data center is a permitted use on a given parcel, and the classification varies significantly by jurisdiction. Some counties treat data centers as light industrial uses; others require special use permits or conditional approvals that trigger public hearings and neighbor notification processes. In Polk County, the existing zoning designation on the Auburndale site will be a primary factor in how quickly Hillwood can advance from permit application to construction authorization.

What investment opportunities arise from the Polk County data center project?

The Hillwood filing validates Polk County as an emerging market for data center investment, which typically attracts follow-on interest from colocation operators, fiber providers, and backup power suppliers. Investors with land or industrial building exposure in the I-4 corridor between Tampa and Orlando should evaluate conversion potential and disposition timing. Industry context: data center-adjacent assets — including fiber conduit, diesel infrastructure, and cooling equipment suppliers — also benefit from regional development activity.

Is Florida a competitive market for data center development?

Florida benefits from no state income tax, a large and growing enterprise customer base, and dual-coast proximity to international subsea cable infrastructure. The state has also historically offered sales tax exemptions on certain data center equipment purchases, though the terms of those incentives vary by project size and structure. Miami leads Florida in colocation density, but interior markets like Polk County offer lower land costs and potentially faster utility coordination.

Why do developers choose secondary markets for data center projects?

Primary data center markets — Northern Virginia, Phoenix, Dallas — face constrained land supply, long interconnection queues, and elevated acquisition costs. Secondary markets offer lower entry costs, available utility capacity, and in some cases more responsive local permitting authorities eager for the economic development benefit. As hyperscale demand continues to grow faster than primary market supply can absorb, secondary market activity is not a trend — it is a structural shift.