Most boards know they are supposed to have a reserve study. Fewer can say when theirs was last done, what percent funded the association is, or which components the study actually covers.

That gap matters more than it used to. Since 2022, several states have tightened requirements substantially, and in Florida the ability to simply vote reserves down has been removed for structural components. A reserve study has moved from prudent practice toward statutory obligation in a growing number of jurisdictions.

This article covers what a reserve study contains, who is required to have one under United States state law, what percent funded means, how the reserve funding plan connects to the annual budget, and how the newer structural requirements differ from a conventional capital reserve study. For the budgeting side, RIOO's guide to HOA finances covers dues calculation and financial oversight.

Key takeaways

• A reserve study does two jobs: inventory what needs replacing and when, and model whether current reserve contributions will cover it.

• Percent funded is the single most-watched number, and roughly 70% or above is the benchmark commonly cited in industry and lender guidance. It is not a statutory threshold in most states.

• Florida's structural integrity reserve study is a different instrument from a conventional reserve study, with its own components and its own rules.

• In Florida, owners can no longer vote to waive reserves for structural components.

• The most common failure is not underfunding. It is commissioning a study and then never using it.

In this guide

• What is a reserve study?

• Who is required to have a reserve study?

• What goes into a reserve study?

• What are the three levels of reserve study?

• What does percent funded mean?

• What is a structural integrity reserve study?

• What does California require?

• How the reserve study should drive the budget

• How boards should review the reserve study each year

• Common reserve study mistakes

• Frequently asked questions

What is a reserve study?

Short answer: A reserve study is a physical inspection of an association's major common-area components paired with a multi-year financial plan for replacing them. It answers two questions: what does the association own that will eventually need replacing and when, and will current reserve savings and contribution levels cover those costs without a special assessment. Everything else in the report supports those two answers.

The distinction that matters operationally is between reserve components and operating components. Operating expenses recur annually or monthly, or fall below the association's minimum cost threshold. Reserve components are the large, infrequent items: roofs, paving, elevators, siding, pools, mechanical systems, plumbing risers. The study concerns itself with the second category.

Who is required to have a reserve study?

Short answer: It depends entirely on the state and, in some cases, on the building type and height. Some states mandate a study on a fixed cycle for nearly every association. Others require one only where the developer established reserves. A growing number have added structural-specific requirements on top of the general reserve fund obligation.

The practical implication for a management company operating across state lines is that reserve obligations cannot be handled with one standard procedure. They need to be tracked per association, per state, with the applicable statute and the next due date recorded against each community. That is the same per-property compliance matrix problem that appears in every regulated segment.

What goes into a reserve study?

Five elements, and a study missing any of them is incomplete regardless of what it cost.

California's Civil Code framework gives a workable definition of what belongs in the inventory: major components with a remaining useful life of less than 30 years and a replacement cost exceeding one percent of the annual budget. Thresholds differ by state, but the principle holds. Small, frequent, cheap items belong in the operating budget. Large, infrequent, expensive ones belong in reserves.

The component inventory is the part most often wrong. A component omitted from the inventory is a component with no replacement reserve behind it, and it will surface as a special assessment.

What are the three levels of reserve study?

Short answer: Level I is a full study including a site inspection and a complete component inventory built from scratch. Level II is an update with a site visit, refreshing condition and cost assumptions against an existing inventory. Level III is an update without a site visit, a desk review that adjusts financials only.

The level definitions come from the reserve study standards maintained by Community Associations Institute, and credentialed practitioners typically hold either the Reserve Specialist designation from CAI or the Professional Reserve Analyst designation from the Association of Professional Reserve Analysts.

A common practical pattern is a full or Level II study on the statutory cycle with desk updates in the years between, so cost assumptions stay current without paying for an inspection annually. Where a state requires a visual inspection at a set interval, a Level III cannot substitute for it.

What does percent funded mean?

Short answer: Percent funded compares the association's actual reserve balance against the amount that should theoretically have been accumulated given the age and condition of its components. An association at 100% funded holds exactly what its component depreciation implies it should. It is the single most-watched number on an association's financial statements and is a required disclosure in some states.

The commonly cited benchmarks:

Two caveats worth understanding before quoting the number to a board.

It is not a legal minimum in most states. California, for instance, requires the percentage to be calculated and disclosed to members in the annual budget report, but does not mandate a particular funding level. The board sets the target, subject to disclosure and to fiduciary duty.

It is a snapshot, not a forecast. An association at 75% funded with a roof due in two years and no plan to pay for it is in worse shape than one at 55% funded with a credible thirty-year funding plan. The percentage answers where you are. The funding plan answers where you are going.

Percent funded also matters outside the association. Lenders, particularly for federally backed financing, look at the reserve study date and the funded ratio when underwriting loans on individual units. A stale study or a weak ratio can affect owners' ability to sell.

What is a structural integrity reserve study?

Short answer: Florida's structural integrity reserve study, or SIRS, is a separate statutory instrument from a conventional reserve study. It focuses specifically on the components that keep a building safe, it applies to residential condominium and cooperative buildings of three or more habitable stories, and reserves for its components cannot be waived by owner vote.

The framework was created by SB 4-D in 2022 following the Champlain Towers South collapse, and refined by SB 154 in 2023 and HB 913 in 2025. It sits in Fla. Stat. § 718.112(2)(g) and works alongside the statewide milestone inspection programme in § 553.899. For associations in existence when the requirement took effect, the initial SIRS deadline was 31 December 2025, having been extended once from the original date. Where a milestone inspection fell due within the following year, associations were permitted to coordinate the two and deliver both together, though that coordination could not push the SIRS beyond 31 December 2026.

The applicability test catches people out. The requirement applies regardless of building age, construction type, or coastal proximity, and height is determined by stories rather than units, so a three-storey building with twelve units faces the same obligation as a thirty-storey tower. Mixed-use buildings containing qualifying units are included, and multi-building associations must address each qualifying structure individually. Two-storey buildings and single-family HOAs are outside the mandate.

Milestone inspections run on a separate clock, triggered when a building reaches 30 years, or 25 where a local jurisdiction requires it, and every ten years thereafter. The two are distinct requirements that cannot be merged, though many associations engage one firm for both, since structural observations from the milestone inspection feed directly into the SIRS assessment.

On funding, HB 913 permits regular assessments, special assessments, loans, and lines of credit, and allows a limited delay where a milestone inspection reveals urgent repairs. The obligation itself cannot be eliminated. The waiver prohibition is also a standalone requirement rather than one tied to the study's completion. Associations whose SIRS was not yet complete still had to include full reserve funding for those components in budgets from 2025 onward, working from prior reserve studies or engineering reports to set defensible interim levels.

One further point that gets missed: a SIRS does not replace a conventional reserve study. It covers the statutory structural categories and sets a mandatory funding floor for them. Elevators, pools, recreational amenities, and other common elements still belong in a comprehensive study.

What does California require?

Short answer: California's Davis-Stirling framework is among the most prescriptive in the country. Civil Code § 5550 requires a reserve study at least once every three years including a visual inspection of accessible areas of the major components the association is obligated to maintain, with review in the intervening years. Civil Code § 5560 requires the board to adopt a funding plan, and § 5570 requires a reserve funding disclosure summary, including the percent funded ratio, in the annual budget report.

Three points of difference from Florida worth noting:

No licensing requirement. California does not specify who must perform the study. Many boards engage credentialed reserve specialists as best practice, but it is not a statutory requirement the way the Florida inspection provision is.

No mandated funding level. The board sets its own target. The obligation is to calculate, disclose, and plan, not to reach a particular percentage.

Balcony inspections feed the study. Civil Code § 5551, from SB 326, requires inspection of exterior elevated elements such as balconies, decks, and walkways by a licensed architect or structural engineer for condominium buildings with three or more units. Those findings must be incorporated into the reserve study, so an inspection revealing repair needs triggers a study update rather than sitting as a separate report.

That last point generalises. Where a state has added a structural inspection requirement, it almost always feeds the reserve study rather than replacing it. Treating the two as unrelated exercises is a common and expensive error.

How the reserve study should drive the budget

A reserve study that sits in a folder has cost the association money and changed nothing.

The connection points are specific:

• The annual reserve contribution comes from the funding plan, not from last year's number plus a percentage.

• Operating and reserve funds must be tracked separately, which is a fund accounting requirement rather than a bookkeeping preference. RIOO's guide to community association accounting covers why operating, reserve, and special assessment funds each need their own ledger.

• Where structural reserves are non-waivable, those funds must be tracked and used only for the components they were designated for, which means the chart of accounts has to support component-level designation.

• The component inventory should map to the asset records the maintenance team already works from. A roof in the reserve study and a roof in the work order system should be the same roof, with the same identifier.

• Every capital project completed should update the study, resetting remaining useful life for that component rather than leaving the next study to discover it.

That last point is where most of the value sits. A study updated as work is completed stays accurate between formal updates. A study left untouched drifts until the next one starts from a worse position. Holding the component register and the association's operational records in one connected structure is what makes that practical rather than a manual reconciliation exercise.

How boards should review the reserve study each year

Short answer: A reserve study is a living document between formal updates. Six checks each year keep it accurate and keep the association's reserve funding plan defensible.

1. Log completed capital projects. Any component replaced since the last review resets its remaining useful life. This is the single most common source of drift.

2. Reassess useful life where conditions changed. A structural inspection finding, a failure, or unusual wear should adjust the schedule rather than waiting for the next full study.

3. Compare the actual reserve balance against the funding target. The gap, not the balance, is the number that matters.

4. Adjust the reserve contribution. Contributions should follow the funding plan, not last year's figure carried forward.

5. Prepare the required disclosures. Where the state mandates a reserve funding disclosure or percent funded calculation in the annual budget report, that obligation recurs annually regardless of when the study was last performed.

6. Diary the next inspection. Book it before the statutory deadline, not at it. Reserve professionals book out months ahead, and a missed cycle is a compliance failure rather than a scheduling inconvenience.

Signs the study needs updating before its next cycle

• Major components have been replaced or substantially repaired

• Construction and material costs have moved significantly since the last analysis

• A structural or elevated element inspection has identified deterioration

• Reserve contributions no longer track the funding plan

• The association is considering a loan or a special assessment

• The study predates the current governing documents or a change in state requirements

Common reserve study mistakes

The last one is avoidable and common. Reserve studies, component inventories, and inspection reports are association records. They should transfer with the management contract, and the transfer should be documented. Associations comparing platforms for this and other community functions may find RIOO's HOA software buyer's guide a useful starting point.

Frequently asked questions

1. What is a reserve study?
A physical inspection of an association's major common-area components paired with a multi-year funding plan for replacing them. It inventories what needs replacing and when, and models whether current reserve savings and contributions will cover those costs without a special assessment.

2. How often is a reserve study required?
It depends on the state. California requires one at least every three years with a visual inspection under Civil Code § 5550. Florida requires a structural integrity reserve study at least every ten years for qualifying condominium and cooperative buildings. Other states vary from mandatory to silent, so confirm the requirement for each association's jurisdiction.

3. What does percent funded mean?
The association's actual reserve balance measured against the amount that component depreciation implies should have accumulated. Above 70% is commonly characterised as well funded, 30% to 70% as fairly funded, and below 30% as poorly funded.

4. What is a good percent funded for an HOA?
Roughly 70% or above is the benchmark commonly cited in industry and lender guidance. Most states do not mandate a level, so the board sets the target subject to disclosure and fiduciary duty. The funding plan matters as much as the percentage, since a well-funded association with a major component due imminently and no plan is not in a strong position.

5. What is a structural integrity reserve study?
Florida's SIRS, under Fla. Stat. § 718.112(2)(g), is a statutory study focused on the components that keep a building safe. It applies to residential condominium and cooperative buildings three or more habitable stories high, is required at least every ten years, and covers roof, load-bearing walls and primary structural members, floor, foundation, fireproofing and fire protection, plumbing, electrical, waterproofing and exterior painting, windows and exterior doors, and any other item costing more than $10,000.

6. When was the Florida SIRS deadline?
The initial compliance deadline was 31 December 2025 for most existing associations, following one extension from the original date. Where a milestone inspection was due within the following year, associations could coordinate both and deliver them together, but not beyond 31 December 2026. After the initial study, the requirement runs on a ten-year cycle.

7. Can Florida owners vote to waive reserves?
Not for SIRS structural components. For budgets adopted on or after 31 December 2024, unit owners can no longer vote to waive or reduce reserve funding for the components covered by the structural integrity reserve study. That prohibition applies whether or not the study itself has been completed.

8. Can reserve funds be used for operating expenses?
Generally no, and in some cases explicitly not. Reserve funds are collected for designated components, and where a state has made structural reserves non-waivable, those funds must be tracked and used only for the components they were designated for. Borrowing from reserves to cover operating shortfalls is a governance and disclosure issue even where it is not prohibited outright. Check your governing documents and state statute.

9. How do balcony inspections affect a reserve study?
In California, exterior elevated element inspections under Civil Code § 5551 must be performed by a licensed architect or structural engineer for condominium buildings with three or more units, and the findings must be incorporated into the reserve study. Where a state has added a structural inspection requirement, it generally feeds the reserve study rather than replacing it.

10. What happens to the reserve study when the management company changes?
The study, component inventory, and inspection reports are association records and should transfer with the contract. Associations that lose them typically pay for a full study again, so the transfer should be documented as part of the handover.

A reserve study is not a report. It is a funding decision with a report attached, and the decision is the part boards defer.

The associations that avoid special assessments are rarely the ones with the most expensive study. They are the ones that adopted the funding plan, contributed to it, updated the component register when work was completed, and looked at the number again the following year.

This article provides general information and is not legal or financial advice. Reserve study requirements, funding obligations, and disclosure rules vary by state and by governing document, and several have changed within the last three years. Confirm your association's current position with counsel and a qualified reserve professional.