Illinois Condominium Property Act & CICAA — Reserve Fund...

Illinois operates two parallel statutory frameworks for community associations: the Condominium Property Act (765 ILCS 605) for condominium associations and the Common Interest Community Association Act (765 ILCS 160) for non-condominium HOAs. Both impose reserve fund and annual budget obligations. Understanding which statute applies to your association — and what each requires — is the starting point for any board treasurer or president trying to manage fiduciary exposure.

Reserve Fund Requirements Under 765 ILCS 605/18

Section 18 of the Condominium Property Act is the core financial compliance provision for Illinois condo boards. It requires every condominium association to maintain a reserve fund for capital expenditures and deferred maintenance on common elements. The reserve fund must be held in a segregated account — separate from the association’s operating account. This is not a best practice; it is a statutory requirement.

Commingling reserve and operating funds is a direct violation of §18 and a textbook breach of board fiduciary duty. Illinois courts treat HOA board members as fiduciaries, and when commingling is established, individual board members face personal liability for resulting damages. We built BoardStack specifically because tools like QuickBooks make commingling easy to do accidentally — the software has no concept of fund segregation. BoardStack enforces the separation at the database layer, making it structurally impossible to mix operating and reserve transactions.

Reserve Study Mandate — 765 ILCS 605/9(c)

Condominium associations with more than six units must conduct a reserve study or reserve analysis at least once every five years. The study must assess the physical condition of major common elements — roofs, elevators, parking structures, mechanical systems — and estimate the funding needed to repair or replace them over a planning horizon.

The board is then required to use the reserve study’s funding model to calculate the reserve contribution line item in the annual budget. If the board adopts contributions below the study’s recommended level, §9(c)(1) requires a written disclosure to unit owners explaining the deviation and the reasons for it. Boards that deviate repeatedly without explanation, or that deviate without making the required disclosure, face substantially elevated fiduciary liability exposure.

For Chicago-area condo associations — whether a high-rise in Lincoln Park or a mid-rise in Oak Park — the five-year reserve study cycle is a firm compliance milestone. Boards should calendar each study’s renewal date and ensure the current study is reflected in every annual budget.

CICAA Reserve Obligations — 765 ILCS 160/1-45

Non-condominium HOAs and planned community associations governed by the CICAA face a different standard. Section 1-45 requires the association’s annual budget to include “reasonable reserves” for capital repairs and replacements. The CICAA does not prescribe a specific reserve study frequency by statute, but that does not mean reserve planning is optional.

The board’s fiduciary duty under Illinois law requires it to make informed financial decisions. A CICAA board that approves an annual budget without any capital analysis, imposes a large special assessment two years later, and cannot show unit owners a capital plan it relied on is in a structurally weak legal position. A systematic reserve study — even if not explicitly mandated — is the most defensible way to satisfy both the reasonable reserves requirement and the fiduciary duty standard.

Resale Disclosure Obligations — 765 ILCS 605/22

When a condominium unit changes hands in Illinois, Section 22 requires the association to provide a resale disclosure package that includes current financial statements, the most recent annual budget, reserve fund balances, and the most recent reserve study. Lenders and buyers’ attorneys review this package to assess the association’s financial health.

An underfunded reserve, a missing or stale reserve study, or disorganized financial records can delay closings, reduce unit valuations, and generate owner complaints directed at the board. Accurate, up-to-date reserve records are not only a compliance requirement — they protect the resale market for every unit in the community.

Board Liability and the Business Judgment Rule

Illinois courts apply the business judgment rule to HOA board decisions, which means a good-faith decision made on adequate information is generally protected from second-guessing. The operative phrase is “adequate information.” A board that approves a reserve contribution level without a current reserve study, or that commingles funds, or that fails to make required disclosures, cannot invoke the business judgment rule because it did not act on adequate information in the first place.

The practical protection for Illinois board members is documentation: a current reserve study, a budget that reflects the study’s recommendations or explains deviations from them, segregated accounts, and meeting minutes that record the board’s deliberations. BoardStack generates the financial reports and audit trail that support this documentation standard — built around the compliance requirements that apply to Illinois associations under both the Condominium Property Act and the CICAA.