Reserve Fund Basics: How Much Should Your HOA Have in Reserves?

The Surfside condominium collapse in 2021 fundamentally changed how legislators and homeowners view reserve funds. Once a financial afterthought for many HOAs, reserve funding is now one of the most scrutinized — and in many states, legally mandated — components of community association governance.

What Is a Reserve Fund?

A reserve fund is money set aside specifically for the eventual repair or replacement of major common area components — roofs, elevators, parking lots, pool equipment, fencing, and similar long-lived assets. Unlike the operating budget (which covers routine recurring expenses), reserve funds are meant to accumulate over time so the association can make large expenditures without levying a special assessment.

The Two Funding Methods

Percent-Funded Method

The most widely used approach. A percent-funded calculation compares actual reserve balance to the "ideal" balance needed if every component were funded 100% proportional to its age and expected replacement cost. Industry standard: 70% funded is considered adequately funded; below 30% is severely underfunded.

Threshold Method

Sets a minimum cash balance (the "threshold") the fund must never fall below. Simpler but less accurate — it does not account for the timing of future expenditures and can leave the association underprepared for large near-term repairs.

What a Reserve Study Must Cover

A professional reserve study (required by law in California, Florida, Nevada, Washington, and several other states) must inventory all major common components and provide:

• Estimated remaining useful life for each component
• Estimated replacement cost in today's dollars
• Inflation-adjusted projected replacement cost
• Current reserve balance vs. required balance
• Recommended annual contribution to reach target funding within 30 years

Florida's Post-Surfside SIRS Requirements

Florida's SB 4D (2022) and subsequent amendments created the Structural Integrity Reserve Study (SIRS) requirement for any condominium building three stories or higher. As of 2026, these associations cannot vote to waive or reduce reserves for structural items including roofs, load-bearing walls, windows, floor/ceiling assemblies, and foundation. Funding waivers that were previously allowed for condos are now illegal for SIRS-covered components.

Reserve Disclosure on Resale Documents

In most states, the reserve funding status must be disclosed to buyers before closing. California requires the reserve summary in the Annual Disclosure Package (Civ. Code § 5300). Florida requires it in the Estoppel Certificate. Nevada requires it in the resale package. Buyers can — and do — use this information to renegotiate purchase prices when reserves are critically underfunded.

States Where Reserve Studies Are Legally Required