Replacement Reserves in Underwriting

Replacement reserves are an annual set-aside for major capital items that wear out — roofs, HVAC, parking lots, appliances. They are a real cash cost, but conventionally they sit below the NOI line, which is why a small reserve quietly changes value by hundreds of thousands of dollars.

Reserves are not an operating expense, so they don't reduce the headline NOI that drives valuation. That's the convention brokers lean on: quote a pre-reserves NOI, divide by a cap rate, and the value looks bigger. But the cash that funds capital replacements still leaves the building every year, so post-reserves NOI is the figure that reflects what an owner actually keeps. For a deeper look at how this gap inflates returns, see the reserves teardown.

The fix is not to bury reserves inside operating expenses — that distorts NOI and the cap-rate comparison. The fix is to be explicit: value the asset on pre-reserves NOI for the headline, then underwrite the cash flow on post-reserves NOI. Carry the reserve as its own line in the pro forma so the discipline is visible. The operating reserves glossary entry covers the definition and common conventions.

Worked example — what the reserve line is worth

The math: annual reserves = $250 × 100 = $25,000. At a 6% cap, that reserve line is worth $25,000 ÷ 0.06 = $416,667 of value difference between pre-reserves and post-reserves NOI.

The discipline: value on pre-reserves NOI for the headline, but underwrite cash flow on post-reserves NOI — the gap is real money.