What Are Reserve Studies, and Why Should Buyers Care?

Buyers scrutinize the HOA fee. They almost never ask the question the fee cannot answer, which is whether the association can actually pay for the roof it is going to need in eight years.

The document that answers it is called a reserve study, and every buyer looking at a condo, townhouse, or any home inside an association is entitled to ask for one. It is dull, it is long, and it will tell you more about your future housing costs than the listing ever will.

What a Reserve Study Actually Is

A reserve study is a budget for things that break slowly. Roofs, elevators, boilers, pool equipment, asphalt, siding, fences, and paint all wear out on a schedule that is roughly predictable, and all of them are too expensive to pay for out of one year's dues. So associations save up in advance, in a separate pot of money called the reserve fund, and a reserve study is the analysis that decides how much needs to be in that pot.

Under the standards published by the Community Associations Institute, the study comes in two halves.[2]

The physical analysis is the walkthrough. A specialist inventories every component the association is responsible for replacing, assesses what condition each one is in, estimates how many years of life it has left, and prices out what replacing it will cost. A component generally makes the list if the association owns it, it wears out on a predictable timeline, and it costs enough to matter.

The financial analysis is the math. It takes the current reserve balance, layers on the replacement schedule from the physical analysis, and produces a funding plan: how much the association needs to contribute every month for the next twenty or thirty years so that the money is there when the roof finally goes.

Percent Funded, the One Number to Look For

Reserve studies run fifty pages or more, but there is one figure worth finding first. Percent funded is the ratio of what the association actually has in reserves to what it ideally should have at this point in the life of its components. An association sitting at 100% funded has saved exactly on pace. One at 40% has saved less than half of what the wear on its buildings says it should have.

The industry sorts this into three bands.[1] Below 30% funded is weak, and special assessments in this range are common rather than unlucky. Between 30% and 70% is fair. At 70% and above the association is considered strong, and the risk of getting hit with a surprise bill drops substantially.

Nobody expects 100%. The 70% mark is the practical target, because reserve studies are estimates and an association needs enough cushion to absorb a project that arrives early or costs more than the estimate said it would.

Why Inflation Made This Worse

A reserve study written in 2019 priced a roof at 2019 costs. Construction and materials costs then rose sharply through the early 2020s, which means associations that were contributing exactly what their old study told them to contribute quietly fell behind anyway. They did nothing wrong and still ended up short.

This is the practical reason a reserve study has a shelf life. An old study is not just out of date on condition, it is out of date on price, and the gap runs in one direction. If the study you are handed was written more than three or four years ago, whatever percent funded figure it reports is probably optimistic today.

Who Writes Them, and Whether One Exists at All

Reserve studies are prepared by credentialed specialists, usually someone holding the Reserve Specialist designation from the Community Associations Institute or the Professional Reserve Analyst designation from the Association of Professional Reserve Analysts. Some associations skip the specialist and have a board member or the management company put something together in a spreadsheet. That is not the same thing, and it is worth asking who actually wrote the document you are looking at.

Whether a study is required at all depends on the state, and the rules vary enormously.[4]

California requires a visual inspection of major components at least every three years, with the board reviewing the study annually in between, once component replacement value reaches half the association's gross annual budget.[3] Senate Bill 900 expanded the definition of a major component from January 2025 to explicitly include gas, water, and electrical service lines the association maintains.

Florida moved much harder after the Champlain Towers South collapse in Surfside killed 98 people in June 2021. Senate Bill 4-D created the state's first statewide structural integrity reserve study requirement in 2022, later adjusted by Senate Bill 154 in 2023 and House Bill 913 in 2025. Buildings three stories and up need a structural integrity reserve study every ten years, prepared by a licensed engineer or architect, and Florida went further than most states by restricting an association's ability to simply choose not to fund the reserves the study calls for.

The contrast matters for buyers. In California an association can have a current, professionally prepared study on file showing it is 25% funded, and then legally decline to fix that. A study tells you the truth about the building. It does not obligate anyone to act on it.

Plenty of states require nothing at all. If you are buying in one of them and the association has no reserve study, that absence is itself the finding.

What to Ask For, and What to Read First

Request three documents from the seller or the association, not just one:

• The most recent reserve study, and note the date it was prepared
• The current operating budget, which shows what is being contributed to reserves right now
• The last two years of board meeting minutes

The minutes are the ones people skip and the ones that usually give the game away. A study can say the association needs to raise contributions by 30%, and the minutes will show you whether the board actually did it or voted to defer the decision for the fourth year running. Special assessments, pending litigation, and arguments about deferred maintenance all show up there in plain language.

When you open the study, look for four things in this order. First, the percent funded figure. Second, the date, because anything older than about three years is understating the problem. Third, the components with the shortest remaining useful life, since those are the bills arriving on your watch and not some future owner's. Fourth, the recommended monthly contribution compared against what the budget shows the association is actually contributing. A gap between those two numbers is a future dues increase or a future assessment, and the study has effectively told you which is coming.

A Low Fee Can Be the Warning Sign

This is the part that runs against instinct. Two similar buildings across the street from each other, one charging $300 a month and one charging $520, and the cheaper one looks like the better deal. Sometimes it is. Sometimes the $520 association read its reserve study and raised dues to fund the elevator replacement scheduled for 2031, while the $300 association has been holding fees flat to keep owners happy and has 18% of what it needs.

The bill does not disappear. It just arrives later, as a special assessment, and it arrives to whoever owns the unit on the day the board votes. That can easily be five figures per owner for a major structural project.

Dues are the visible number, so they get all the attention. The reserve study is the invisible one, and it is where the actual liability lives.

The Short Version

A reserve study is the association telling you, in writing, what it expects to have to replace and whether it has the money. Percent funded is the summary figure, 70% is the line worth caring about, and roughly three quarters of associations fall below it. An old study understates the problem because construction costs moved. A low monthly fee is not evidence of a healthy association and is sometimes evidence of the opposite.

Ask for the study, the budget, and the minutes. It takes an afternoon to read them, and it is the cheapest due diligence available on a purchase this size.