What Is a Reserve Study? A Condo & HOA Guide
What a reserve study (a reserve fund study in Canada) really tells you: what's inside it, what 'percent funded' means, and the red flags to catch before buying a condo.
Quick answer: A reserve study is a professional report that inventories all of an association's major shared components — roof, elevators, pavement, pool — estimates when each will need replacing and what it will cost, and calculates how much the reserve fund should hold today. In Canada the same document is called a reserve fund study. The headline number is percent funded: the higher it is, the lower your risk of a surprise special assessment.
If you own — or are about to buy — a condo, a townhouse, or any home inside an association, the reserve study is the one document that tells you whether the community is quietly heading toward a big surprise bill. It's dry, it's often buried, and almost nobody reads it. Here's how to read it like a pro.
Reserve study vs. reserve fund study: the same document
If you've seen both terms, you're not imagining things — they're regional names for one report.
- In the United States, it's a reserve study, a term standardized by the Community Associations Institute (CAI) and the Association of Professional Reserve Analysts.
- In Canada, the legally defined term is a reserve fund study — Ontario's Condominium Act uses exactly that phrase. You'll also see "contingency reserve fund study" and "replacement reserve study," and in British Columbia the equivalent is a Depreciation Report.
The distinction worth keeping straight is between the fund and the study. A reserve fund is the savings account itself; a reserve fund study (or reserve study) is the professional report that decides how much should be in it. Same purpose on both sides of the border: look at every expensive shared component, predict when it wears out, and make sure the money is there when it does.
What's actually inside a reserve study
Every reserve study has two halves and produces three answers. The physical analysis inventories the shared components and assesses their condition. The financial analysis turns that inventory into a savings plan. Together they answer three questions:
| The study tells you | In plain English |
|---|---|
| Component inventory + useful life | What shared parts wear out (roof, elevators, pavement, pool, boilers), how long each lasts, and how many years are left |
| Current replacement cost | What it will cost to replace each one, adjusted for inflation |
| Percent funded + funding plan | How prepared the reserves are today, and how much the association must contribute each year to stay ready |
Components that are too cheap, too unpredictable, or expected to outlast the building itself — foundations, in-wall wiring, sometimes plumbing — are usually excluded and handled out of the operating budget or insurance instead.
What "percent funded" means — and what's a good number
Percent funded compares the cash actually in the reserve fund against the fully funded balance — what should be there given how worn the components are. It's the single most useful number in the whole report, and reserve analysts lean on a widely used rule of thumb:
| Percent funded | What it signals | Special-assessment risk |
|---|---|---|
| 70% and up | Strong, well-prepared reserves | Low |
| 30–70% | Fair — funded, but watch the trend | Moderate |
| Below 30% | Weak; deterioration is outrunning savings | High |
A 100% figure isn't required, and it's rarer than people expect — plenty of healthy associations deliberately sit below it. What matters more than any single year is the trend: a fund climbing from 45% to 60% is far healthier than one sliding from 80% to 65%. And reserve contributions are no rounding error — they're often 15–40% of an association's entire annual budget, and the reserve fund is usually its single largest financial asset.
How an association decides what to save
The National Reserve Study Standards describe two ways to calculate contributions and a few goals to aim at. You don't need to master these as an owner, but recognizing them helps you read the report:
- Cash-flow method vs. component (straight-line) method — two math approaches that reach the same finish line. The component method funds each component in its own bucket; the cash-flow method pools them and is more flexible.
- Full, threshold, and baseline funding are goals of decreasing ambition. Full funding targets 100% funded; baseline funding aims only to never run the fund down to zero (and carries the highest special-assessment risk); threshold funding sits somewhere in between.
The same logic runs a single house — list each big system, estimate its life and replacement cost, and save monthly. That's exactly what our home repair sinking fund calculator does with the component method.
Is a reserve study required by law?
Increasingly, yes — though it depends entirely on where you live.
- United States: Roughly 30 states mandate reserve studies or reserve disclosures, including California, Florida, Hawaii, Nevada, Virginia, and Washington. California's Civil Code §5300 requires associations to review a study at least every three years (with a visual site inspection) and disclose it annually; Maryland began requiring them in 2022. Separately, FHA and Fannie Mae require condos to put at least 10% of assessment income toward reserves to remain mortgage-eligible — so weak reserves can quietly shrink a building's pool of qualified buyers.
- Canada: Condo and strata legislation is provincial. Ontario requires a reserve fund study; British Columbia requires a Depreciation Report; most other provinces have their own version.
Even where it isn't legally required, lenders, insurers, and savvy buyers increasingly expect to see one.
How to read a reserve study before you buy
This is where the document pays for itself. Before you buy into any association, request the current reserve study and recent meeting minutes, and read them with these in mind:
Ask for these
Standard buyer due diligence
- The most recent reserve study and its date — a study older than 3–5 years is stale
- The current percent funded, and the trend across the last few studies
- The annual reserve contribution, and whether the board actually follows the study's recommendation
- A history of past and planned special assessments
Red flags
Reasons to dig deeper — or walk away
- Percent funded below 30%, or a number falling year over year
- No reserve study at all, or one many years out of date
- A big-ticket component (roof, elevators, pipes, façade) near end of life with no funding plan
- Dues that look suspiciously low for the building's age and amenities
A fully funded, recently updated reserve study is a quiet green flag. A missing or underfunded one means the next roof or elevator could land on your doorstep as a four- or five-figure special assessment. For the full picture of who pays for what in an association, see what your HOA maintains vs. what you're responsible for.
The homeowner version: a reserve study for your own house
Here's the part most homeowners miss: the reserve-study method works just as well for a single house. You own the roof, the HVAC, the water heater, the eventual repipe — all big, predictable capital expenses with a knowable service life. Run your own one-person reserve study: list each system, estimate the years left, and save a monthly amount into a sinking fund.
That turns the occasional five-figure replacement into a planned withdrawal instead of a credit-card emergency. Our home repair sinking fund calculator does the math for you, and the home maintenance budget calculator sizes the routine upkeep that helps each system actually reach its expected life.
Whether you own a condo and want to read your association's study, or a house and want to run your own, the discipline is identical: see the big bills coming, and save before they arrive.
Sources
- Reserve study — Wikipedia and Reserve fund study — Wikipedia, on study structure, funding methods, percent funded, and US/Canadian requirements.
- Community Associations Institute (CAI), publisher of the National Reserve Study Standards and the Reserve Specialist (RS) credential.