Blog · Basics
What Is a Reserve Study? A Plain-Language Guide for Boards
By the REcollab team, built by civil engineers. Published July 11, 2026.
A reserve study is a long-term financial plan for a building. It lists every major component the association must eventually repair or replace, estimates when that money will be needed and how much, and tells the board whether current savings are on track. It is the difference between a $12,000 surprise bill per unit and a planned monthly contribution.
What does a reserve study actually contain?
Every reserve study has two halves.
The physical analysis is an inventory of the building's major components: roof, elevators, HVAC, parking structure, facade, windows, boilers. For each one: its condition, its remaining useful life, and what it will cost to repair or replace.
The financial analysis turns that inventory into a funding plan: how much is in the reserve fund today, how much should be there (the fully funded balance), and what owners need to contribute each year so the money exists when the roof does not.
The single most important output is percent funded: your actual reserves divided by what they should be. Below roughly 50% is widely treated as elevated risk by lenders and buyers.
Who performs a reserve study?
It depends on where your building is. Ontario prescribes professionals under its regulation, including engineers and architects. New Jersey requires a credentialed Reserve Specialist, licensed engineer, or architect. California mandates the study but no specific license. Alberta has a defined provider list with independence rules. The full picture is in our requirements by region guides.
How often is one required?
| Region | Cycle |
|---|---|
| Ontario | Every 3 years |
| California | Every 3 years, plus annual board review |
| New Jersey | At least every 5 years |
| Alberta | Every 5 years |
| New York, Texas | No statewide mandate, but lender rules apply |
Thirteen US states and five Canadian provinces mandate reserve studies; the full list is here. Even where no law exists, Fannie Mae and Freddie Mac expect credible reserve planning before backing mortgages in your building, which is a mandate with a different enforcement arm.
What does it cost, and how long does it take?
Traditional studies run from a few thousand dollars for small associations to $10,000 to $40,000 for large New York City buildings, with 60 to 90 day turnarounds. REcollab generates an engineer-reviewed study from documents your building already has in about an hour, at roughly 40% less, and keeps it current afterward. See how it works on the core product page.
What happens to buildings that skip it?
The costs arrive anyway, just without warning. The average special assessment is $3,525 per unit (Foundation for Community Association Research). The Ontario Auditor General found 69% of that province's reserve funds underfunded, in a place where studies are legally required every 3 years, because a study that sits in a drawer goes stale while costs move. One 11-unit condo had no current study, discovered $132,000 of urgent work, and only avoided a per-unit emergency levy by rebuilding its plan in time.
Why the "study" is becoming a living plan
A traditional reserve study is a snapshot that starts aging the day it is printed. Modern practice, and increasingly the law (California's annual review, the pending New York bill), expects the numbers to stay current: costs that update, spending that reconciles, a percent-funded figure the board can trust in any month. That is the gap REcollab was built for: the study becomes a live 30-year capital plan rather than a PDF.
Frequently asked questions
Is a reserve study the same as a building inspection?
No. Inspections assess safety and condition at a point in time. A reserve study adds the financial layer: when components fail, what they cost, and whether the money will exist.
What is the fully funded balance?
The amount that would be in reserves if the association had saved perfectly in proportion to each component's age. Your actual balance divided by this number is your percent funded.
How long does a reserve study take?
Traditionally 60 to 90 days. Generated from existing documents with engineer review: about an hour plus review time.
Do single-family HOAs need reserve studies?
Where mandated, such as New Jersey above $25,000 in common elements, yes. Elsewhere it is best practice: shared roads, pools, and clubhouses age the same way condo roofs do.
Who reads a reserve study besides the board?
Buyers through resale disclosures, lenders through Fannie Mae and Freddie Mac eligibility rules, and insurers. The percent-funded number follows every resale.
Sources: Foundation for Community Association Research; Ontario Auditor General; California Civil Code 5550; New Jersey S2760; regional statutes linked throughout.
REcollab turns the legally required reserve study into a live 30-year capital plan. Built by two civil engineers.
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