Anyone comparing Braidwood to Coal City or Wilmington on a spreadsheet usually stops at the same line. Braidwood posts the best cost-of-owning score of any town in Will County, 92.8 out of 100, according to the county-level rankings on mytownview.com. That number gets repeated in group chats and open house small talk as proof that Braidwood is simply the value play along this stretch of Route 66.
It's a real number. It's also the wrong question. The question worth asking isn't why Braidwood's ownership costs look favorable. It's who is actually covering the difference, and for how long that arrangement is locked in.
The number behind the number
The answer sits in a school board vote most homebuyers will never see. The Reed-Custer Board of Education, which oversees Community Unit School District 255U, signed a six-year property tax settlement with Constellation Energy covering the Braidwood plant, now branded the Braidwood Clean Energy Center. The agreement fixes the plant's Equalized Assessed Value at $500 million for the life of the deal, which runs through 2027. At that valuation, the plant's total annual property tax bill comes to roughly $29.5 million. Of that, Reed-Custer's schools collect about $19.6 million a year.
For six years, one taxpayer is contracted to carry $19.6 million of the load that Reed-Custer's schools would otherwise have to spread across every home, farm, and small business parcel in the district.
Here's the shorthand version of how that works. A school levy in Illinois is a fixed dollar amount the district needs to raise, divided by the total Equalized Assessed Value of every taxable parcel in its boundaries. Add $500 million in locked-in value from one property, and the rate applied to every other property drops for the same levy dollars. That's the mechanism behind the numbers, not a coincidence of geography.
Why this shows up in your bill even if you never think about a power plant
Reed-Custer 255U doesn't just serve the city of Braidwood. It covers Custer Park, Essex, and Godley too, which means the plant's tax contribution is spread across a wider footprint than the town's own borders. According to Ownwell's tax data for Braidwood, the median effective property tax rate in town runs about 2.21%, above the national median of 1.02% but below the Illinois state median of 2.33%. The median annual tax bill lands around $4,241, higher than the $2,400 national median but lower than what a comparable home would likely pay elsewhere in a state known for carrying some of the highest property tax rates in the country.
That's the honest version of Braidwood's tax story. It isn't that Braidwood escaped Illinois's tax structure. It's that one industrial anchor is absorbing enough of the school levy that everyone else's rate sits a little lower than it otherwise would.
What's actually up for renewal in 2027
It's worth being precise about what does and doesn't change in 2027, because the two get conflated easily.
The plant itself isn't going anywhere on that timeline. Braidwood's two reactors hold NRC operating licenses extended through 2046 for Unit 1 and 2047 for Unit 2, following a renewal the commission approved back in 2016. Physically, the facility is good for another two decades.
What expires in 2027 is the tax settlement, a separate and much shorter-term agreement between the district and the plant's owner over what value gets assigned for local tax purposes. That's not automatic, and it isn't the first time the numbers attached to this plant have been contested. In past years, the utility that operated Braidwood before Constellation's 2022 spinoff from Exelon sought state support to keep several Illinois nuclear plants financially viable and clashed publicly with state lawmakers over how those finances were presented. Assessed value tied to a power plant isn't a fact of nature. It's a negotiated position, revisited on a schedule, by two parties with different incentives.
None of this means the number resets to zero, or that it necessarily goes up or down by any particular amount. It means the $19.6 million currently flowing to Reed-Custer schools is contracted, not permanent, and the contract's end date is now on the near horizon rather than a distant one.
What this means for your own math
If you're comparing Braidwood to a neighboring town using this year's tax bill as your baseline, you're implicitly assuming that bill holds steady for as long as you own the house. For most towns along this corridor, that's a reasonable assumption, because their tax base is spread across thousands of ordinary residential parcels with no single anchor doing outsized work. Braidwood is different, and that difference is worth pricing into a long hold, not just a first-year comparison.
A few concrete steps make sense before you treat Braidwood's current rate as a settled fact. Ask what share of Reed-Custer's levy currently depends on the Braidwood Station settlement, which is public information available through the district and Will County's assessment records. Ask whether your specific parcel falls inside Reed-Custer 255U's boundaries, since the benefit of this arrangement doesn't reach every address with a Braidwood mailing address equally. And if you're planning to hold the property past 2027, treat this year's bill as a snapshot rather than a forecast.
None of this is a reason to avoid Braidwood. The town is doing plenty on its own terms right now. The city council has taken its first steps toward a bike and hike trail network, the Route 66 Centennial has brought a wave of Red Carpet Corridor programming through town this year, and Fossil Ridge Public Library recently hosted an open house on a proposed rail system plan that drew residents in to weigh in directly. Mastodon Market's new travel center at Coal City Road and Route 113 opened this year after a long wait through IDOT permitting, and Top Fuel Saloon on South Hickory Street keeps drawing the kind of loyal local following that doesn't happen by accident. It's a town with real momentum. It just also happens to have a tax structure that leans on one very large, very specific contract, and that contract has a date on it.
A short FAQ
Does my property tax bill jump the moment the settlement ends in 2027? Not automatically. The current agreement's term ending doesn't erase the plant's assessed value overnight. It means the value used for tax purposes becomes subject to renegotiation between the district and the plant's owner, with an outcome that isn't yet public. Anyone making a long-term decision based on today's rate should treat that renegotiation as a real variable, not a settled fact.
Is the Braidwood plant closing in 2027? No. That date applies only to the school tax settlement. The plant's NRC operating licenses run through 2046 and 2047, so the facility's physical presence, and its role as a major local employer, isn't tied to the same clock as the tax agreement.
How do I check where a specific property stands before I make an offer? Will County's assessor's office and the Reed-Custer school district both maintain public records on assessed values and levy allocations. A local agent who already tracks this kind of detail can help you interpret what you find and put it next to a specific listing, rather than a townwide average.
Understanding a mechanism like this one is exactly the kind of groundwork Hexagon Real Estate does before a client ever writes an offer. If you're weighing Braidwood against its neighbors and want the tax picture explained in plain terms for a specific address, schedule your consultation and we'll walk through it together.
