Legal Question in Real Estate Law in Illinois

First it depends on the kind of HOA. For condominiums, increases of more than 15% require special procedures. For townhomes and cooperatives, they are limited by the community documents but not by statute as such. Bottom line it's really simple: if there are increased costs that must be addressed, I am not aware of a statute that will cap what may be needed to pay for them.

While I am an active member of the Illinois Bar, this Answer is intended solely as a courtesy to the Questioner based on an incomplete set of facts, so that the Questioner can be encouraged to obtain proper and complete legal advice based on all of the necessary facts.

This is not meant as a definitive answer but a general narrative to assist you in heading in the right direction. Any law cited or referred to specifically or generally may or may not apply to a specific set of facts. We nevertheless hope this is of some help to you.