CapEx & Property Reserve Calculator

A CapEx replacement reserve (or sinking fund) is a dedicated cash allocation set aside by property owners and HOAs to fund long-term structural replacements—such as roof overhauls, HVAC heating systems, elevators, and facade restorations—without resorting to abrupt special assessments.

The Peters Formula establishes that over an 80-year total structural lifecycle, maintenance and CapEx will consume approximately 150% of the original construction replacement cost. For multi-family condos, roughly 70% of this expenditure goes toward common structural elements: Annual Reserve per Sq Unit = (Replacement Cost per Sq Unit × 1.5) / 80 Years × 0.70.

European and German property benchmarks tier reserves by property age: 1. Under 22 years: up to €7.10/sq m/yr (~$0.70/sq ft), 2. 22 to 32 years: up to €9.00/sq m/yr (~$0.90/sq ft), 3. Over 32 years: up to €11.50/sq m/yr (~$1.15/sq ft), with a surcharge for elevators.

Operating Expenses (OpEx) cover routine, ongoing upkeep and minor repairs (e.g. plumbing snags, landscaping, cleaning). Capital Expenditures (CapEx) represent major long-term asset improvements and full component replacements that extend structural lifespan.

No, contributions toward long-term structural capital reserves are owner-borne expenses and cannot legally be passed through to residential tenants in standard utility or operating cost billings.

The accumulated reserve balance remains permanently attached to the real estate title and transfers to the buyer upon closing. In many jurisdictions, the allocated reserve balance is exempt from property transfer taxes if itemized in the purchase contract.