Not the same as an SSA tax on your property tax bill. This post covers homeowners association and condo association special assessments. For the municipal Special Service Area tax on new-construction subdivisions, see SSA taxes on new construction in Yorkville and Montgomery.
What Is a Special Assessment on a Yorkville Townhome or Condo?
A special assessment is a one-time charge your homeowners association or condo association bills on top of your regular dues to cover a specific cost, like a new roof, a failed retaining wall, or a shortfall in the association’s reserves. It is not the same thing as the municipal Special Service Area (SSA) tax that shows up on new construction tax bills in Yorkville and Montgomery. Illinois law requires the association to disclose any special assessment that is confirmed or pending before you close, and the standard Illinois contract gives you a window to review that disclosure and walk away if the number changes your decision.
By Kealan O’Neil | September 28, 2026
Nothing on a Zillow listing or a connectMLS sheet tells you whether a townhome or condo association is financially healthy. The number that actually matters lives in the association’s resale disclosure package, and that is where a special assessment first shows up on paper, not on the listing itself.
The Document That Tells You More Than the Listing Ever Will
If the property is a condominium, Section 22.1 of the Illinois Condominium Property Act spells out nine things the association has to hand over once a prospective buyer asks in writing: the declaration and bylaws, a statement of liens and unpaid assessments tied to the unit, anticipated capital expenditures for the current and next two fiscal years, the reserve fund’s balance and how it is allocated, the association’s most recent financial statement, the status of any pending lawsuits, a summary of the association’s insurance coverage, confirmation that the unit’s improvements comply with the condo documents, and the association’s contact information. A pending or approved special assessment shows up in more than one of those categories, which is exactly why the package matters more than anything in the MLS remarks.
If the property is a townhome governed by a homeowners association rather than a condominium, the Common Interest Community Association Act requires a comparable disclosure package, but on a longer clock than a condo association gets. A lot of Fox Valley attached-home developments are legally structured as HOAs rather than condominiums, and that distinction changes your timeline, so it is worth confirming with your agent or attorney which structure your development actually uses before you assume the faster deadline applies.
This is not just a condo issue. Plenty of the townhome communities going up in Yorkville, Oswego, and Montgomery hand roof, siding, and retaining-pond maintenance over to the association, and even some single-family subdivisions with a private road or a shared stormwater feature carry a homeowners association behind the scenes. Any of those associations can levy a special assessment when a shared cost outruns the reserve fund, whether the roof needs replacing five years early or the detention pond needs re-engineering after a bad storm season. The size of the hit ranges from a modest one-time charge spread across every owner to a real financial surprise, depending on how well the association has been funding its reserves. That range is exactly why you read the disclosure package before you close instead of after.
3 Things Yorkville and Fox Valley Buyers Miss About a Special Assessment
1. The disclosure clock and your termination window are two different clocks. Under the Multi-Board Residential Real Estate Contract 8.0, Paragraph 17 puts the first deadline on the seller: once you are under contract, the seller has to apply for the association’s disclosure documents within 10 business days of the Date of Acceptance. The second deadline belongs to the association. A condo association has 10 business days from that written request to produce the full disclosure package, while a non-condo HOA has up to 30 days under the Common Interest Community Association Act. The third deadline is yours: once you actually receive the documents, you generally have 5 business days to review them and terminate the contract if what you find changes your decision. Miss that window because you assumed someone would flag a problem for you, and you have accepted the association, assessment and all, as-is.
2. A confirmed assessment and a proposed one get handled differently. If it was already approved by the association before the Date of Acceptance, Paragraph 17 makes it the seller’s problem: they pay it, or you negotiate a credit, before you close. But if the association approves a new one after you are already under contract, the seller has to notify you, and you get 3 business days to agree on how it gets split. That is a short window in an already busy contract period, which is exactly why it is worth telling your attorney the moment that notice shows up, not after your review period has already run.
3. It is not the SSA on your property tax bill, and confusing the two costs buyers real money. If you have looked at new construction in Yorkville or Montgomery, you have probably run into a Special Service Area, or SSA, which is a municipal tax the town uses to pay back the bonds that funded roads, sewers, and other infrastructure for the subdivision. A special assessment is a different animal entirely: it is a private charge the homeowners association or condo association levies on its own members, it has nothing to do with the municipality, and it never appears as a line on your county tax bill. It shows up in the association’s books and, once unpaid, as a lien recorded against the property with the county recorder’s office. Buyers who confirm there is no SSA and assume that means no assessment risk are looking at the wrong document entirely. Ask about both, separately.
Common Questions About Special Assessments in the Fox Valley
Buyers and sellers working through a Yorkville, Oswego, or Montgomery townhome or condo contract ask these most often.
Who pays for a special assessment when you buy a townhome in Illinois?
How much can an Illinois association charge for the disclosure documents?
Is a special assessment the same as the SSA tax I keep hearing about on new construction?
How long do I have to review the association’s disclosure documents once I am under contract?
Does a non-condo HOA in Yorkville or Oswego have to disclose an assessment before I close?
A special assessment does not have to be a dealbreaker. Plenty of well-run associations use one exactly as intended, to fund a real, planned expense instead of letting reserves run dry for years. What matters is whether you see the number before you are locked in, not after. That is part of what the attorney review period is for, and it is the kind of document I read with buyers before we even write an offer on a townhome or condo in Yorkville, Oswego, or Montgomery.
If you are under contract on a Fox Valley townhome or condo and want a second set of eyes on the association’s disclosure package before your review window runs out, or you are still deciding whether a listing’s assessment history is a problem, I am happy to help you read it. It is worth the same kind of attention you would put toward title insurance or your earnest money, because all three protect the same thing: what you actually own once you close. Call or text Kealan at 630-425-8815.
This post is part of our guide to property taxes and SSAs in Kendall and Kane County.
About Kealan O’Neil
Kealan O’Neil is the Designated Managing Broker and founder of O’Neil Property Group, an independent real estate brokerage based in Yorkville, Illinois. He and his team help buyers and sellers in Yorkville, Oswego, Montgomery, and the surrounding Kendall and Kane County communities, and he owns and manages a local rental portfolio, so he approaches every decision as both a broker and an investor. Call or text Kealan at 630-425-8815.
This post is general information about real estate in the Fox Valley, not legal, tax, or financial advice. Real estate laws, tax rules, and municipal ordinances change, and how they apply depends on your specific situation. Talk with a licensed attorney, CPA, or lender before making decisions about a purchase, sale, or tax matter. O’Neil Property Group is a licensed Illinois real estate brokerage.