Condo reserve study Chicago: what Illinois law requires

Last updated 2026-07-25

What is a reserve study, and why does a Chicago condo board need one

A reserve study is a written report, usually done by an engineer or a reserve specialist, that walks through every major common element in a building (roof, boiler, elevators, facade, parking structure, pipes) and estimates two things: how many years of useful life each component has left, and how much it will cost to repair or replace it. The report then produces a funding schedule showing what the association should be setting aside each year so the money is there when the roof actually fails, instead of a board scrambling for a special assessment. In Illinois, this isn't optional guesswork. The Condominium Property Act requires associations to conduct a reserve study at least once every 5 years, and to reevaluate it at least every 5 years after that, unless owners vote it down ^[1]. The law also sets a funding floor: reserves have to equal at least 10% of the association's annual budget unless two-thirds of unit owners vote to waive or reduce that requirement ^[1]. For Chicago buildings specifically, this matters more than in a lot of other cities because of building age and weather exposure. A huge share of Chicago's condo stock is pre-1980s masonry and vintage courtyard buildings, plus a wave of steel-and-glass high-rises from the 1960s-80s that are now hitting the age where facades, tuckpointing, and mechanical systems all come due around the same time. Lake effect freeze-thaw cycles are brutal on parapets, balconies, and parking garage decks. A reserve study is how a board figures out, with real numbers instead of guessing, whether the building is heading toward a manageable annual increase or a five-figure special assessment.

What does a reserve study actually cover, component by component

A proper reserve study inventories every major common element the association is responsible for maintaining, then assigns each one a useful life, a remaining useful life, and a current replacement cost. Typical line items for a Chicago mid-rise or high-rise include the roof membrane, tuckpointing and facade sealant, elevator modernization, boiler and chiller replacement, domestic water piping, parking garage deck coating and structural repair, common area HVAC, lobby and hallway finishes, and life safety systems like fire alarm panels and sprinkler risers. The study comes in two flavors: full (with an on-site physical inspection by the preparer) and update (a desktop refresh of the numbers using prior inspection data). Most professional reserve study standards, including those published by the Community Associations Institute's National Reserve Study Standards, recommend a full study with site visit every 5 years, with a with-site-visit update or no-site-visit update in the years between, depending on how much has changed ^[2]. The deliverable itself is usually 20 to 60 pages: an executive summary, a component inventory table, current reserve fund balance, a 20 or 30-year funding plan showing either straight-line or component funding models, and a recommended annual contribution. Boards should ask the preparer directly which funding model they used, because it changes the numbers a lot. Straight-line funding assumes even contributions per component; component (or cash-flow) funding pools everything into one fund and smooths it out, which is what most large associations actually use in practice.

How much should an HOA or condo association have in reserves

There's no single dollar figure that's right for every building, because it depends entirely on the age, size, and condition of the components in the study. What matters is the ratio between what's in the account and what the study says should be there, called the percent funded. Industry benchmarks generally treat 70% funded or higher as strong, 30-70% as fair, and below 30% as weak or at-risk, based on the percent-funded framework used across reserve study practice and referenced by CAI ^[2]. Many associations run well under 50% funded in practice, which is part of why special assessments blindside so many owners. Illinois' statutory floor of 10% of the annual budget ^[1] is a legal minimum, not a target. Ten percent of a modest $500,000 annual budget is $50,000, which won't cover a $400,000 roof replacement in a 60-unit building. Boards that treat the statutory minimum as the goal are usually the ones doing a special assessment five years later. A reserve study tells you the real number for your building, not the legal floor. For Florida-specific readers comparing frameworks, see how percent-funded targets interact with SIRS requirements in reserve study for condo association and how the state's temporary funding relief provisions work in florida condo reserve fund relief.

How much does a reserve study cost in Chicago

Small vintage building	6-20	$2,500-$5,000
Mid-rise elevator building	21-75	$5,000-$9,000
High-rise with pool, garage, multiple mechanical systems	100+	$9,000-$18,000+
Update (no site visit)	any	$500-$2,000	These are planning ranges, not quotes; actual pricing depends on the specific firm, site access, and how many components the building has. Complex high-rises with parking structures, pools, or multiple elevator banks push toward the top end or beyond it. A reserve study is a one-time or every-5-year cost. It's cheap compared to the alternative: a poorly funded reserve account that turns into a $20,000 per unit special assessment when the roof or plumbing stack finally fails.

Pricing depends mostly on unit count, building complexity, and whether it's a full study with a site inspection or an update. For a typical Chicago condo association, expect a range roughly like this: | Building type | Units | Typical full study cost |

What is an HOA assessment, and how is it different from a special assessment

An HOA assessment, sometimes just called a regular or monthly assessment, is the routine fee every owner pays to fund the association's operating budget and reserve contributions. It covers landscaping, insurance, management fees, utilities for common areas, and the reserve fund set-aside the board budgets each year based on the reserve study's recommended contribution. A special assessment is different: it's a one-time (or sometimes installment) charge levied outside the regular budget, usually because reserves came up short for an unexpected or underfunded repair. If a board didn't fund reserves adequately, or a reserve study wasn't updated and a major failure (roof leak, boiler failure, facade collapse risk) hits sooner than expected, the special assessment is how the gap gets covered. The entire point of a reserve study is to reduce the odds of ever needing a special assessment, or at least to shrink it. Boards that run a reserve study every 5 years as Illinois law requires, and actually fund toward the recommended contribution instead of the 10% statutory floor, are the ones who avoid the $10,000-plus surprise bills. For more on how special assessments work and what triggers them, see hoa special assessment.

Are HOA special assessments tax deductible

Generally, no, not for the individual homeowner, and this catches a lot of Chicago owners off guard after a big assessment hits. The IRS treats special assessments for capital improvements (a new roof, elevator modernization, facade repair) the same way it treats other capital improvements to your home: they're added to your cost basis, not deducted in the year you pay them. That means the benefit shows up later, as a reduction in taxable gain when you sell the unit, not as a current-year deduction. There are narrow exceptions. If part of the unit is used for rental or business purposes, a portion of the assessment tied to that use may be deductible as a business expense, subject to normal IRS rules on capital expenditures versus repairs (see IRS Publication 527 for residential rental property and IRS Publication 530 for homeowner tax rules) ^[3][4]. Assessments that fund actual repairs and maintenance for a rental unit can sometimes be expensed in the year paid, while assessments for improvements typically must be capitalized and depreciated. Because this depends on how the money is used and how the unit is used, owners should talk to a tax preparer about their specific situation rather than assume any assessment is deductible. Nobody should DIY this determination off a blog post, including this one.

What triggers a reserve study in Illinois, and who has to order one

Under 765 ILCS 605/9, condo boards in Illinois are required to conduct a reserve study at least once every 5 years, and to review and update it at least every 5 years thereafter, unless a majority of unit owners at a meeting called for that purpose vote to waive the requirement ^[1]. The statute lists the components a reserve study has to address, tying the requirement to the reserve fund the board is required to maintain. The law doesn't mandate a specific licensed profession the way some other states do; associations commonly use engineering firms, reserve study specialists certified by CAI (Reserve Specialist, RS, or Professional Reserve Analyst, PRA credentials), or architects with relevant experience. Whoever does it, the board's job is to make sure the study actually gets ordered on schedule and that someone reads it and acts on the funding recommendation, more than files it away. Boards in self-managed or lightly-managed buildings are the ones most likely to let this slide, because there's no property management company tracking the 5-year clock. If your board doesn't currently have a system for tracking statutory deadlines like this one, alongside insurance renewals, engineer inspections, and annual meeting notices, that's the gap that turns into a legal or financial problem years down the road.

How is a reserve study different in Illinois versus Florida's SIRS requirement

This trips up a lot of readers who see Florida's post-Surfside milestone inspection and Structural Integrity Reserve Study (SIRS) news and wonder if Illinois has something similar. It doesn't, not in the same form. Florida's SIRS requirement under Florida Statutes ch. 718.112 applies to condominiums 3 stories or more and requires a study of specific structural components (roof, load-bearing walls, floor, foundation, fireproofing, electrical, plumbing, waterproofing, and more) with reserve funding for those items becoming mandatory and largely non-waivable ^[5]. It grew directly out of the 2021 Surfside collapse and is tied to structural safety, administered alongside Florida's separate milestone inspection statute for older buildings near the coast. Illinois' reserve study requirement under 765 ILCS 605/9 is a general financial planning requirement covering all major common elements, not a structural-safety-specific mandate, and it remains waivable by owner vote ^[1]. There's no Illinois equivalent to Florida's milestone inspection triggered by building age and distance from the coast. Chicago boards don't have a structural inspection deadline tied to age the way Florida buildings do, but that doesn't mean facade and structural risk isn't real here: the city's own Facade Ordinance (Chicago Municipal Code 13-196-030) requires critical examination of exterior walls on buildings over 80 feet every 4 to 8 years depending on the report classification, which is Chicago's closest analog to a structural check-in ^[6].

What happens if a Chicago board skips the reserve study or underfunds reserves

Skipping the study outright is a statutory violation under 765 ILCS 605/9, and while enforcement in Illinois tends to happen through owner litigation or lender/insurer pushback rather than aggressive state audits, the practical risk is bigger than the legal one. Lenders increasingly ask for reserve study documentation and percent-funded data before approving mortgages in a building, following Fannie Mae and FHA project review standards that scrutinize reserve adequacy. A building that can't produce a current reserve study or shows reserves badly underfunded can see unit sales stall because buyers can't get financing. Underfunding reserves creates a compounding problem: the gap between what's in the account and what the study says is needed doesn't shrink on its own, it grows every year components age further. Boards that ignore a study's funding recommendation for a few years in a row often end up facing a choice between a large one-time special assessment or a loan, and loans come with interest that ultimately costs owners more than steady reserve contributions would have. The fix is boring but effective: get the study done on the statutory schedule, actually adopt the recommended annual contribution (or a phased path toward it) into the budget, and revisit it at each 5-year mark instead of letting it go stale.

How do I read a reserve study report once I have one

Look at three numbers first: current reserve balance, percent funded, and the recommended annual contribution for the next year. If percent funded is below 30%, the board should treat that as a flashing warning light and start budgeting toward the recommendation immediately, even if it means a noticeable assessment increase. Next, check the funding model. If the report uses component (cash-flow) funding, ask what the target reserve balance and threshold look like in years the report flags as tight (some reports show a projected dip toward zero or negative in a specific year, which tells you exactly when a shortfall will hit if nothing changes). Finally, look at the component list for anything the board didn't expect to see, or anything missing that the board knows is a problem (a known roof leak, an elevator the fire department has flagged, cracking on a parking deck). If a known issue isn't in the study, that's worth a call back to the preparer before the board adopts the funding plan. Boards juggling a reserve study alongside facade inspection deadlines, insurance renewal dates, and annual meeting notice requirements often lose track of which document is due when. A $199 one-time Board Compliance Kit can help organize and schedule those recurring deadlines (reserve study updates, inspection cycles, meeting notices) so nothing quietly lapses; it doesn't replace the licensed engineer or reserve specialist who has to actually perform the study, and it doesn't interpret your governing documents or issue any compliance verdict. Build one at /board-kit-builder.

What should a Chicago board do in the next 90 days

Pull the last reserve study, if one exists, and check the date. If it's more than 5 years old, the association is out of compliance with 765 ILCS 605/9 ^[1] and needs to get a new one ordered now, not at the next fiscal year. If a study exists and is current, compare the recommended contribution to what's actually in this year's budget. A gap of more than 10-15% between recommended and actual funding is worth a board discussion about a phased increase before it becomes a five-figure gap. If the building is over 80 feet, confirm the facade critical examination cycle under the Chicago Facade Ordinance is on schedule, since that inspection and the reserve study often surface the same underlying repair needs (tuckpointing, parapet repair, sealant failure) ^[6]. And if nobody on the board can say off the top of their head when the last reserve study, facade inspection, and insurance renewal happened, that's the actual problem to solve first. Related reading: reserve study, hoa reserve study, and condo special assessment insurance for how underfunded reserves interact with insurance costs after a major claim.

Frequently asked questions

What is a reserve study?

A reserve study is a professional report that inventories a building's major common elements (roof, elevators, boiler, facade, plumbing), estimates each one's remaining useful life and replacement cost, and produces a funding schedule showing how much the association should set aside annually so repairs don't require a surprise special assessment.

What is a reserve study for an HOA?

Same concept as a condo reserve study, applied to homeowner association common elements: roads, clubhouse, pool, retaining walls, drainage systems, and shared amenities. It sets a funding target so the HOA can pay for major repairs from savings instead of emergency assessments on members.

What is an HOA assessment?

An HOA assessment is the regular fee owners pay to fund the association's operating budget and reserve contributions, covering things like landscaping, insurance, management, and the annual reserve set-aside recommended by the reserve study. It's distinct from a special assessment, which is a one-time charge for an unexpected or underfunded expense.

How much should an HOA have in reserves?

There's no universal dollar figure; what matters is percent funded, the ratio of actual reserves to what the study says is needed. Industry practice generally treats 70%+ funded as strong and under 30% as a risk zone. Illinois law sets a 10% of annual budget floor, but that's a legal minimum, not an adequate target for most buildings.

How much does a reserve study cost?

In the Chicago area, a full reserve study with a site visit typically runs $2,500 to $5,000 for small buildings, $5,000 to $9,000 for mid-size elevator buildings, and $9,000 to $18,000+ for large high-rises with pools, garages, and multiple mechanical systems. Update-only reports without a new site visit cost less, roughly $500 to $2,000.

Are HOA special assessments tax deductible?

Generally no for a primary residence; the IRS treats assessments for capital improvements as additions to your cost basis rather than a current deduction. Rental or business-use units may deduct a portion depending on how the assessment funds are used. Check IRS Publication 527 and 530, and confirm your specific situation with a tax preparer.

Does Illinois require a reserve study by law?

Yes. Under 765 ILCS 605/9, Illinois condo associations must conduct a reserve study at least every 5 years and update it at least every 5 years thereafter, unless owners vote to waive it. The law also sets a 10% of annual budget minimum reserve funding requirement.

How is Illinois' reserve requirement different from Florida's SIRS law?

Illinois' reserve study law (765 ILCS 605/9) covers general common elements and is waivable by owner vote. Florida's SIRS requirement under Florida Statutes ch. 718.112 targets specific structural components in condos 3+ stories, is largely non-waivable, and grew out of the 2021 Surfside collapse. Chicago has no equivalent structural mandate, though its Facade Ordinance covers exterior wall safety on tall buildings.

Who is qualified to perform a reserve study?

Illinois law doesn't specify one required license; associations commonly hire engineering firms, CAI-credentialed Reserve Specialists (RS) or Professional Reserve Analysts (PRA), or architects with relevant experience. What matters most is choosing someone who does a real site inspection for the full study, more than a desktop update, at least once every 5 years.

What happens if a Chicago condo board never orders a reserve study?

It's a violation of 765 ILCS 605/9. Practically, it also creates real risk: lenders increasingly require reserve documentation before approving unit financing, and buildings without a current study or with badly underfunded reserves can see sales stall. The bigger long-term risk is an unplanned special assessment when a major component fails.

What's the difference between a full reserve study and an update?

A full study includes an on-site physical inspection of every major component by the preparer. An update is a desktop refresh of prior data without a new site visit, generally cheaper ($500-$2,000) and used in the years between full studies, which most standards recommend every 5 years.

Can owners vote to waive Illinois' reserve study requirement?

Yes. Under 765 ILCS 605/9, a majority of unit owners at a meeting called for that purpose can vote to waive or reduce the reserve study and funding requirement. Doing so repeatedly is risky, since it just delays the funding gap rather than closing it, and it can hurt resale financing.

Sources

1. Illinois General Assembly, Condominium Property Act, 765 ILCS 605/9: Illinois requires reserve studies every 5 years and a 10% of annual budget minimum reserve funding requirement, waivable by owner vote
2. Community Associations Institute, National Reserve Study Standards: Reserve study best practice recommends full studies with site visits every 5 years and percent-funded benchmarks for reserve adequacy
3. IRS, Publication 527, Residential Rental Property: How assessments for capital improvements versus repairs are treated for rental property tax purposes
4. IRS, Publication 530, Tax Information for Homeowners: Homeowner tax treatment of assessments and capital improvements to a primary residence
5. Florida Senate, Florida Statutes Chapter 718.112: Florida's SIRS requirement applies to condos 3 stories or more and covers specific structural components with largely non-waivable reserve funding
6. City of Chicago Municipal Code, Facade Ordinance, 13-196-030: Chicago requires critical examination of exterior walls on buildings over 80 feet every 4 to 8 years depending on report classification