What is a reserve study?
A reserve study is two things in one document: a physical inventory of everything an association owns in common, with an estimate of when each item wears out and what it will cost to replace, and a financial plan showing whether current savings will cover those costs. Its headline number is percent funded, which compares what the association has saved against what it should have saved by now.
The physical half: the component inventory
A reserve study starts with a list of everything the association is responsible for replacing. For a townhome community that typically means roofs, siding and paint, asphalt and concrete, fencing, the pool and its equipment, the clubhouse and its mechanical systems, lighting, irrigation, signage, and mailboxes. For a high rise it means elevators, boilers, facade, windows, and garage structure.
Each component gets four numbers. Quantity is how much of it there is, in square feet, linear feet, or units. Unit cost is what it costs to replace one of them today, installed, including labor, materials, mobilization, disposal, and permits. Useful life is how long that type of component normally lasts. Remaining life is how much is left of this particular one, based on what the analyst observed at the property.
Remaining life is where the judgment lives. A composition shingle roof might carry a useful life of 22 years on a national table, but in a hail-exposed region the honest number is closer to 18, and an individual roof that took a storm three years ago may have far less than either figure suggests.
The financial half: the funding analysis
Fully funded balance
The fully funded balance is the amount an association would have saved if it had been setting aside money in exact proportion to how much of each component's life it has used up. For a $100,000 roof with a 20 year life that is 10 years old, the fully funded share is $50,000. Add that calculation across every component and you get the fully funded balance.
This is a benchmark, not a target that must be hit. Very few associations are at 100 percent, and being below it is not by itself a failure.
Percent funded
Percent funded is the current reserve balance divided by the fully funded balance. It is the single number that appears on the cover of every reserve study, and it is the number lenders and prospective buyers ask about.
Below 30 percent is weak, and special assessment risk rises sharply. Thirty to 70 percent is fair, which is where most healthy associations actually sit. Above 70 percent is strong.
The 30 year projection
The projection rolls the reserve balance forward year by year. Each year it adds the contribution, adds interest earned, and subtracts whatever components come due that year with their costs inflated forward to the year they are spent. Any year the balance drops below zero is a projected special assessment, and the study reports the shortfall divided by the number of units so a board can see it per household.
Funding models
Studies normally show at least two and often three scenarios. Current funding is the do-nothing line: contributions stay as they are. Threshold funding finds the minimum contribution that keeps the balance above a stated floor in every projection year, which in practice means avoiding a special assessment. Full funding targets 100 percent funded, which costs more and is the more conservative posture.
Levels I, II, and III
CAI defines three service levels, and the difference between them is how the data is gathered, not how the math is done.
- Level I, full study. The analyst visits the property, builds the component inventory from scratch, measures and photographs everything, and prepares the complete funding analysis. Appropriate for a first study, or when the property has changed materially.
- Level II, update with site visit. A prior study exists. The analyst visits, verifies conditions against it, corrects what has changed, refreshes costs, and rebuilds the funding plan. This is the most common recurring engagement.
- Level III, update without site visit. Built from the prior study, client supplied photographs and financials, and current cost data, with no visit. The lowest cost option, and appropriate when conditions are known and stable. It should not be used indefinitely: eventually somebody has to look at the roof.
What each level includes in practice, and what each one costs, are both published.
What is a reserve study for an HOA?
Everything above applies to a homeowners association exactly as written: the same component inventory, the same thirty-year funding analysis, the same three funding scenarios. What is specific to an HOA is who the study is for and what it is used to decide. The board adopts a funding plan from it, the budget carries the reserve contribution it recommends, and an owner selling a unit hands a buyer's lender the percent funded figure it produces. The study is not a compliance artifact filed and forgotten; it is the document three separate audiences read.
A reserve study for a condo association is the same instrument with one difference that matters: the association typically owns more of the building. Where a single-family HOA reserves for streets, amenities and common landscape, a condo association is usually reserving for the roof, the envelope and the mechanical systems as well, which is why the component count and the dollar figures are generally larger.
HOA reserves rule of thumb, and why boards should distrust it
The rule of thumb boards hear most often is that reserves should sit at seventy percent funded, and that ten percent of the annual budget should go to reserves. Both are real conventions and both are worth knowing, because the first is the threshold at which risk of special assessment is generally considered low, and the second is a sanity check on a budget that has none.
They are also the wrong tool for the decision they usually get used for. Percent funded is a ratio between what you have and what the schedule says you should have, and an association with almost nothing coming due can be seventy percent funded and still headed for a shortfall the year the roof lands. What predicts a special assessment is the shape of the projection: the years where the balance dips toward zero. That is why a study models cash flow year by year rather than reporting one number.
Use the rule of thumb to decide whether to ask the question. Use the funding analysis to answer it.
HOA reserve fund requirements, by who is asking
There is no single national requirement, which is the source of most of the confusion. Four different bodies can impose one and they do not agree: state statute, your own governing documents, a lender's project eligibility standard, and in some states an insurer. Colorado sets disclosure obligations rather than a funding minimum. Florida requires the study for many condo buildings and bans waiving the reserves it identifies, which is the stricter regime by a wide margin. Fannie Mae and Freddie Mac impose no legal duty at all, and can still make units in an underfunded project unfinanceable, which reaches owners faster than a statute would.
What boards should do
- Find out when your last study was completed and at what level. If it is more than five years old, or if you cannot find it, treat that as the answer.
- Check whether a statute, your governing documents, or a lender requirement applies to your association. State transition study rules and the Fannie Mae and Freddie Mac lending standards are the two that catch most boards by surprise.
- Ask any provider you are considering for their percent funded methodology, their inflation assumptions by category, and whether they take referral fees from contractors.
- When the study arrives, look first at the projection years where the balance dips, not at the percent funded number. The dip is what a special assessment feels like.
- Adopt a funding plan by board resolution and revisit it every year with the budget, not only when a new study lands.
Common questions
How often should a reserve study be updated?
The industry standard is a full study every three to five years with annual or biennial updates in between. Some states set their own interval by statute, and lenders increasingly expect a study no older than three years. Costs and conditions both move faster than most boards expect, so an out-of-date study is often worse than no study because it produces false confidence.
What is a good percent funded?
Above 70 percent is considered strong, 30 to 70 percent is fair, and below 30 percent is weak with a materially higher risk of special assessment. Percent funded is a snapshot rather than a verdict: a community at 45 percent with a sound funding plan and no near-term cluster of expenditures can be in better shape than one at 65 percent facing a roof, a paving cycle, and a boiler in the same three years.
Does a reserve study cover operating expenses?
No. Reserves cover the replacement and major repair of components the association owns in common and that have a predictable useful life. Landscaping contracts, insurance premiums, utilities, and management fees are operating expenses and belong in the annual budget, not the reserve plan.
Who is qualified to prepare one?
Most states do not license reserve study providers, which puts the burden on boards to check credentials. Look for adherence to CAI national reserve study standards, professional liability coverage, and independence from any contractor who would perform the recommended work. Ask directly whether the provider takes referral fees.
What is the difference between a reserve study and a capital plan?
They overlap heavily. A reserve study follows a defined professional standard, uses the fully funded balance methodology, and is the document lenders and insurers recognize. A capital plan is a broader and less standardized term that may or may not include the funding analysis. If a statute or a lender asks for a reserve study, a capital plan will usually not satisfy it.
Update log
- Aug 20, 2026 Page published.