What makes a reserve study too old for budget planning?

There is no universal source-backed birthday that makes every reserve study unusable for budgeting. A study needs review when material property, project, cost, reserve-balance, or funding facts no longer match current conditions; Fannie Mae's separate lender-review rule uses a three-year window.

Separate budgeting from lender currency

For Fannie Mae Full Review, the lender may review the most current reserve study or Reserve Study Update only if it was completed within three years of the date the lender approves the project. That is a defined financing boundary.

The source does not say that a study younger than three years is automatically current for budget decisions, or that every study becomes unusable for all planning when it reaches three years. Completed projects, changed condition, changed costs, a different reserve balance, or a changed funding plan can make review necessary sooner.

What should trigger a check?

Compare the current record with the six subjects Fannie Mae requires a qualifying study to address: components, condition and remaining life, costs, annual contributions including inflation, existing funded reserves, and the funding plan. If a material subject changed or cannot be traced, do not hide it inside the next budget total.

Sources

• Fannie Mae Selling Guide B4-2.2-01, Full Review Process, version August 5, 2026 — three-year lender-review window and required reserve-study subjects.

Primary source accessed September 11, 2026.