Case File · Yorkville, Kendall County, Illinois
Six hours. 1,037 acres. Approved at 12:51 AM.
Pioneer Development, LLC asked the Yorkville City Council to annex and rezone 1,037 acres for Project Cardinal — 14 data-center buildings totaling 17 million square feet. The council said yes at 12:51 a.m. on March 11, 2026 after a nearly six-hour meeting. Alderman Rusty Corneils voted no. A companion 540-acre Prologis proposal was postponed. Seven DC filings tested one small Illinois city's political capacity.
Cited Cardinal case read: 58/100 before Pioneer filed a single application.
1,037
Cardinal Acres
14
Buildings
~6 hrs
Meeting Length
Corneils
Dissenting Vote
42.5K gpd
Cooling Water
58/100
RealClear Score
Yorkville, Illinois · 2024 — 2026
The complete timeline.
From a PZC rejection to a 6-hour marathon. Every vote, every alderman, every concession.
2024–2025
Yorkville becomes a target corridor for data center developers
Kendall County's proximity to Chicago infrastructure, ComEd transmission, and relatively inexpensive farmland makes Yorkville attractive to multiple DC operators. The City of Yorkville identifies Project Cardinal and Project Steel as the two largest proposals, with Hamman-Kelaka, Prologis, Pioneer Development, and other parties filing in parallel.
February 12, 2025
Planning & Zoning Commission rejects a separate 130-acre DC rezoning
The Yorkville Planning and Zoning Commission votes to reject a 130-acre data center rezoning (a different proposal from Hamman-Kelaka's later application), signaling that some DC proposals will not clear even the advisory step. The rejection is a visible marker that Yorkville's PZC is not a rubber stamp.
March 11, 2025
Council unanimously approves Hamman-Kelaka rezoning
Despite the earlier PZC rejection of a different DC application, the Yorkville City Council unanimously approves the Hamman-Kelaka, LLC proposal to rezone three properties totaling 112.44 acres for data-center industrial buildings. The revised plan includes parking-only development on parcels adjacent to residential neighborhoods, a 400-foot setback from homes, and height restrictions within 1,500 feet of residences.
March 11, 2025 (meeting)
Alderman Chris Funkhouser publicly acknowledges resident concerns
Ward 3 Alderman Chris Funkhouser states on record: 'I don't want a building in your backyards. I wouldn't want a data center or other warehouse in my backyard.' His yes vote reflects the city's broader tax-base calculation, but his public acknowledgement of proximity impact signals the political cost of further approvals.
March 10–11, 2026
Six-hour marathon meeting on Project Cardinal
The Yorkville City Council convenes at 7 p.m. on March 10 and votes at 12:51 a.m. on March 11 — a nearly six-hour contentious meeting — to approve annexation, rezoning, and utility/infrastructure agreements for Project Cardinal. The developer is Pioneer Development, LLC. The campus spans 1,037 acres with 14 buildings totaling 17 million square feet, sited northwest of Illinois Route 47 and Galena Road. Alderman Rusty Corneils casts the single dissenting vote.
March 11, 2026
Water-use commitment — 42,500 gallons per day, closed-loop air-cooled
Pioneer commits to reducing cooling water usage from an earlier proposal of 350,000 gallons per day to approximately 42,500 gallons per day using an air-cooled closed-loop system. This design decision preempts the water-scarcity narrative that killed data centers in San Marcos, Tucson, and Chesapeake.
March 2026
Pioneer financial package — $51M over four years
Pioneer Development agrees to contribute approximately $51 million to Yorkville over four years as part of the agreement package. Combined with the pending Project Steel (Prologis L.P.), total committed contributions across both projects would reach approximately $91 million, with approximately $68.25 million allocated to the Yorkville school district for facility improvements.
Council remark
Alderman Craig Soling defends DCs as lower-impact
Alderman Craig Soling states publicly that 'data centers have less of a negative impact than other manufacturing or industrial uses' along the corridor. This framing becomes the official city rationale for approving Cardinal while acknowledging the near-6-hour process of working through resident concerns.
2026
Project Steel vote postponed — city still negotiating
The companion Project Steel application, led by Prologis L.P. on 540 acres for 18 warehouse buildings totaling 9 million square feet, has its vote postponed. The city indicates it is 'still negotiating final pieces,' signaling that serial DC approvals are becoming harder to clear on the first attempt.
The People Who Decided These Cases
Council members, developers, and a single no vote.
One pro-DC alderman. One dissenter. Two developers with different outcomes. And one resident's testimony that framed the debate.
Rusty Corneils
Yorkville City Alderman
Documented Record
Cast the single dissenting vote on Project Cardinal during the nearly six-hour March 10–11, 2026 meeting approving annexation and rezoning.
The lone no vote on Project Cardinal. His dissent does not block the project but marks a political ceiling: each subsequent DC filing starts with a known opposition vote on the council rather than a clean slate.
Craig Soling
Yorkville City Alderman
Documented Record
Stated publicly that 'data centers have less of a negative impact than other manufacturing or industrial uses' in the corridor.
The visible public-facing advocate for data centers on the council. His framing became the official city rationale for tolerating DC density along the Route 47 corridor.
Chris Funkhouser
Ward 3 Alderman
Ward 3
Documented Record
Stated on record: 'I don't want a building in your backyards. I wouldn't want a data center or other warehouse in my backyard.' Voted yes on Hamman-Kelaka rezoning March 11, 2025.
His yes vote paired with an open acknowledgement of resident concerns describes the median Yorkville alderman's calculus: tax base first, but with real awareness that community tolerance for data centers is finite.
Pioneer Development, LLC
Developer (Project Cardinal)
Documented Record
Filed for annexation of 1,037 acres for 14 data center buildings totaling 17 million square feet at Route 47 / Galena / Baseline / Ashe Road. Committed $51M over four years, reduced cooling water from 350K to 42.5K gal/day.
The Project Cardinal proponent. Their willingness to absorb multiple design revisions — including a ~88% reduction in cooling water and a parking-only buffer — is the kind of concession package a pre-filing analysis would predict and budget for.
Hamman-Kelaka, LLC
Developer (earlier 112-acre rezoning)
Documented Record
Rezoned three properties totaling 112.44 acres for data-center industrial use, approved unanimously by City Council March 11, 2025. Annexed parcels: 62.54 acres. Already-in-city parcel: 50 acres.
The earlier, smaller DC proponent. Their approval served as the Yorkville precedent that Project Cardinal used one year later to clear the council. Pre-filing analysis would flag Hamman-Kelaka as the structural comparable.
Prologis L.P.
Developer (Project Steel, postponed)
Documented Record
Filed Project Steel — 540 acres, 18 warehouse buildings totaling 9 million square feet. Vote postponed at the March 2026 meeting; city indicated it was 'still negotiating final pieces.'
Blue-chip industrial developer. The postponement, not denial, of Project Steel signals serial-DC fatigue rather than categorical opposition. A pre-filing analysis would flag that Project Steel's approval timeline has lengthened materially after Cardinal's friction.
Carol Kicher
Yorkville Resident
Documented Record
Publicly testified at the March 11, 2025 meeting: 'The peoples' voices should be heard and should be represented through the vote of the council.'
Representative of the resident opposition bloc. Her framing — 'voices should be heard' — tracks the Chesapeake and San Marcos pattern where residents demand council accountability, not outright denial.
Opposition Source Records
Rejection, dissent, and resident fatigue.
The opposition did not kill Project Cardinal, but it did make clear that Yorkville's political capacity for data centers is now finite.
Yorkville Planning & Zoning Commission
Advisory body · Rejected 130-acre DC on Feb 12, 2025
The PZC's rejection of a separate 130-acre DC rezoning proposal on February 12, 2025 proved Yorkville's advisory process was not automatic. Any developer entering Yorkville after that date had to model PZC rejection as a plausible first-step outcome — and budget council appeal costs accordingly.
Resident Testimony
Sound, light, air, property value concerns
Multiple residents spoke at both the March 2025 and March 2026 hearings, raising concerns about proximity to homes, sound from cooling equipment, light pollution, air quality, and property values. Alderman Funkhouser publicly acknowledged these concerns even while voting yes.
“I don't want a building in your backyards. I wouldn't want a data center or other warehouse in my backyard.”
Alderman Rusty Corneils
Lone dissenter on Project Cardinal · March 11, 2026
Rusty Corneils cast the only no vote on Project Cardinal after the six-hour hearing. His dissent does not change the outcome but establishes a council opposition anchor point for every subsequent filing. The next DC developer will not get a clean majority — they will have to earn Corneils or work around him.
The Pre-Filing Research
What RealClear finds at Project Cardinal.
Before the six-hour meeting. Before the 42,500 gallon commitment. Before Corneils voted no.
Site Analysis
Project Cardinal — Pioneer Development, LLC
Yorkville, Kendall County, IL — 1,037 acres, 14 buildings, 17M sq ft
Caution Source Records
- Planning & Zoning Commission rejected a separate 130-acre DC rezoning
- Near-6-hour contentious council meeting indicates political fragility
- Alderman Rusty Corneils voted no on Project Cardinal
- Multiple residents raised sound, light, and air pollution concerns
- Cooling water reduced from 350,000 to 42,500 gal/day after redesign
Approval Pathway
Annexation → Rezoning → Council APPROVED
Council Vote
Water Risk
Political Signal
Recommendation
QUALIFIED GO. Project Cardinal made it through council, but the 6-hour meeting, a PZC rejection on a separate 130-acre DC, and Alderman Corneils’ dissent signal a city nearing its political capacity. Subsequent filings should expect slower processing and harder negotiations on setbacks, parking-only buffers, and cooling design.
The Pre-Flight Checklist
Six source-record factors. All publicly available.
Every friction point that extended this meeting to six hours was visible in Yorkville's public record before Pioneer filed.
February 2025 PZC rejection on a separate 130-acre DC
Comparable outcomes reviewThe Yorkville Planning & Zoning Commission had already rejected a different DC rezoning one year earlier. Pre-filing, this is the single most important comparable: it means PZC is not a rubber stamp. A cited source review surfaces that the advisory step had a documented 'no' outcome for a similarly-sized DC.
Alderman Chris Funkhouser's March 2025 on-record concerns
Political AnalysisWard 3 Alderman Funkhouser's March 2025 statement that he 'wouldn't want a data center in my backyard' is a published political signal. A pre-filing analysis would score this as a probable future swing vote, not a reliable yes.
Sustained resident opposition across multiple hearings
Community risk reviewResidents testified on sound, light, air, and property values at both the March 2025 Hamman-Kelaka meeting and the March 2026 Cardinal meeting. The community's concerns are durable, not a one-time objection. The Community risk review would flag Yorkville as sustained-opposition.
Water-use reduction required to win approval
Water AnalysisPioneer had to cut cooling water from 350,000 gal/day to 42,500 gal/day — roughly 88% — to clear council. A pre-filing analysis of Yorkville's water politics surfaces the required concession early, letting Pioneer's architects design to that constraint before the first hearing rather than in redrafts.
Parallel-project drag — Project Steel postponed
Approval path reviewPrologis's Project Steel (540 acres, 18 buildings) was filed in parallel with Cardinal but had its vote postponed. The lesson: serial DC filings in the same jurisdiction absorb political capital. The cited approval-path review surfaces that Cardinal and Steel were effectively competing for the same finite council attention.
Proximity-impact framing is the persistent veto theme
Design PatternThe residents at Yorkville did not argue climate or grid impact — they argued proximity: sound, light, property value. This is the same theme driving Chandler, Arizona's denial and Chesapeake, Virginia's 7-0 rejection. A proximity-sensitive design (parking-only buffers, 400-foot setbacks, height limits within 1,500 feet) is now table stakes in suburban Illinois.
What Happened Next
The aftermath.
Project Cardinal cleared. Project Steel didn't. The city now has a documented DC tolerance ceiling.
Cardinal Status
Approved — Construction Clear to Proceed
Pioneer Development has annexation, rezoning, and infrastructure agreements in hand. Construction can proceed on 14 buildings across 1,037 acres northwest of Route 47 and Galena Road.
Steel Status
Prologis Vote Postponed — Negotiating
The companion Project Steel (540 acres, 18 warehouse buildings) had its vote postponed. The city said it was “still negotiating final pieces.” Timeline pressure on Prologis is now explicit.
Fiscal Commitment
$51M from Pioneer, ~$91M Combined
Pioneer committed $51M over four years. Combined with Steel, potential contributions reach ~$91M, with ~$68.25M allocated for Yorkville school district facility improvements.
The Lesson
Small-City DC Capacity Is Finite
Yorkville has documented that serial DC approvals extend hearing time, harden resident opposition, and create documented council dissent. Each additional DC filing starts from a lower political baseline.
This Is Entitlement Research
Request a site memo for your next project.
Yorkville shows what small-city DC approval looks like when you're the fifth filing in the queue. It takes six hours. It takes an 88% water cut. And you still get a no vote.
RealClear screens each candidate before filing — water, political, and parallel-project dynamics — so you can negotiate once, not four times.
Cited research summary · Not legal advice · Verify independently before making investment decisions