Why Is a Condo Reserve Study Different From an HOA Study?

A condo reserve study and an HOA reserve study follow the same method: list the components, estimate their lives and costs, and build a funding plan. The difference is what the association owns. A single-family HOA usually maintains roads, a pool, a clubhouse and landscaping. A condo association often owns the building itself: roofs, structure, facades, elevators, plumbing risers, fire systems and garages. Those are bigger, costlier and harder to see, which makes condo reserve studies more consequential and, increasingly, more regulated.

I build the software that produces reserve study funding plans, and condo buildings are where the numbers get large fastest. This guide explains what a condo reserve study covers, the rules that now apply, and what a board should check.

Here is what matters most:

• Condo associations usually own the building envelope and core systems, so their reserve studies include elevators, roofs, facades, waterproofing, plumbing, electrical, fire protection and parking structures.
• Building components are expensive and often due in clusters, so condo cash flows can swing from comfortable to short within a few years.
• Laws are tightening: Florida requires structural integrity reserve studies for buildings three or more habitable stories tall, and New Jersey requires condo reserve studies at least every five years.
• Lenders care: Fannie Mae's condo reserve minimum rises from 10% to 15% of the budget for loan applications from January 4, 2027.
• The questions that matter are the same as for any study: percent funded, recommended contribution and the year the 30-year cash flow goes negative.

What a condo reserve study covers that an HOA study often does not

The exact list depends on the declaration, which defines what the association maintains and what owners maintain inside their units. In a typical mid-rise or high-rise condo, the study will include:

• Roofing and roof-top equipment
• Structure and building envelope: concrete, balconies, facades, sealants, waterproofing, exterior painting
• Windows and exterior doors, where the association is responsible
• Elevators: cab interiors, controls and full modernization
• Mechanical systems: chillers, boilers, pumps, cooling towers, common area HVAC
• Plumbing: risers, domestic water pumps, drainage
• Electrical: switchgear, panels, emergency generators, lighting
• Fire protection: alarm panels, sprinklers, fire pumps
• Parking garages: concrete repair, membranes, gates, ventilation
• Common interiors: lobbies, corridors, amenity rooms
• Site: paving, pools, landscaping, as in any HOA

Many of these items are expensive, and several, such as concrete restoration and waterproofing, are hard to assess from a visual inspection alone. That is why structural reports and engineering input often feed into condo reserve studies.

Why condo cash flows are harder to manage

In a single-family HOA, big items tend to be spread out: paving one year, the pool another, the clubhouse roof later. In a condo, several major systems often reach the end of their lives in the same decade, because they were all installed when the building was built. A roof, an elevator modernization and a facade restoration in the same five-year window can drain reserves that looked healthy.

That is why the 30-year cash flow matters more than the summary page. A building can be 60% funded today and still run short in year eight when three big projects land together.

The laws that now apply to condo reserve studies

Florida. Condominium buildings three or more habitable stories tall need a structural integrity reserve study at least every 10 years, covering roof, structure, fire protection, plumbing, electrical, waterproofing, windows and exterior doors, and related items over $25,000. Reserves for those items cannot be waived or reduced, though a 2025 law added options such as baseline funding and pooling. These buildings also need milestone inspections at 30 years and every 10 years after. See our guides to the Florida SIRS report and the Florida milestone inspection.

New Jersey. A law signed in January 2024 requires condominium associations to have a reserve study updated at least every five years with a 30-year funding plan, and sets structural inspection requirements for covered buildings.

California. The Davis-Stirling Act requires a reserve study with a site inspection at least every three years for common interest developments, including condos, and an annual review.

Other states have their own rules, and several have considered reforms since the Surfside collapse. Check your state's current law with your association's attorney.

What lenders look at

When buyers finance a condo with a conventional mortgage, the lender reviews the condo project, including its budget and reserves. Fannie Mae's Lender Letter LL-2026-03 raises the minimum reserve allocation from 10% to 15% of budgeted assessment income for loan applications dated on or after January 4, 2027. A current reserve study can justify a different figure under conditions. Our guide to Fannie Mae condo reserve requirements covers the details.

For condo owners, that means a weak reserve budget can make units harder to finance, which affects resale.

What a condo board should check in its reserve study

1. The component list matches the declaration. Items the association maintains are in; items owners maintain are out.
2. Building systems are assessed by someone qualified. For structural and envelope items, engineering input matters.
3. Costs reflect current local pricing, especially for elevators, concrete restoration and roofing, where prices have risen sharply.
4. The cash flow shows the clusters. Look for the years where several big projects land together, and the lowest balance at your current contribution.
5. The budget meets lender floors. Check your 2027 reserve allocation against Fannie Mae's 15% minimum, or the reserve study route.

You can run your building's numbers in our free HOA reserve fund calculator. It works for condos too: enter your building components, balance and contribution to see percent funded, the year the fund runs short and the contribution that fixes it.

Frequently asked questions

What does a condo reserve study include?

It includes every major component the condo association must repair or replace under its declaration, typically roofs, structure and envelope, windows, elevators, mechanical, plumbing, electrical and fire systems, garages, common interiors and site items, with a funding plan to pay for them over time.

How often should a condo get a reserve study?

Common practice is a site-visit update every three to five years and lighter updates between. Some states set the schedule: California every three years, New Jersey at least every five years, and Florida requires a structural integrity reserve study at least every 10 years for buildings three or more stories.

Why are condo reserve studies more expensive than HOA studies?

Condo buildings have more complex and costly systems, such as elevators, mechanical plants, facades and garages, that take longer to inspect and price. Structural items may require engineering input, and in Florida the structural study must be performed or verified by a licensed engineer or architect or a certified reserve professional.

What happens if a condo's reserves are too low?

When a major replacement comes due without enough reserves, the association usually levies a special assessment or takes a loan repaid through higher dues. Low reserves can also make units harder to finance under lender rules, which can affect sale prices.

For firms that prepare condo studies

Condo studies have more components, more photos and more structure to document. Our engine turns inspector notes and photos into the component inventory, funding plans and a branded draft in your template, for your professional to review and sign. See AI reserve study software.