Yield on Cost vs. Cap Rate: Understanding the Development Spread

Cap rate is the yield you buy. Yield on cost is the yield you create. For a developer or value-add investor, the gap between the two — the development spread — is the whole reason to take on the risk.

What each one measures

Cap rate = NOI ÷ price (or sale value). It’s the market yield on a finished, stabilized asset.

Yield on cost (also return on cost) = stabilized NOI ÷ total project cost — purchase, hard costs, soft costs, and carry. It’s the going-in yield you manufacture by building or repositioning, rather than the one you pay market price for.

Side by side

What the spread tells you

If your yield on cost exceeds the market cap rate you’d sell at, you’ve created value — the finished property is worth more than it cost to make. That difference, measured in basis points, is the development spread. Many developers want at least a 150–200 basis-point spread to justify the construction, lease-up, and market risk of a ground-up or heavy value-add deal.

Worked example

You spend $2,900,000 all-in and stabilize the property at $210,000 NOI — a yield on cost of about 7.2%. The market cap rate for that finished asset is 6.5%. Your development spread is roughly 70 basis points. Thin — it may not compensate for the risk. Push costs down or rents up so yield on cost hits ~8%+, and the spread widens to a range that actually pays you for the work.

The takeaway

Buyers live on cap rate; builders live on the spread between yield on cost and cap rate. If that gap is thin, the deal has little margin for a construction overrun or a soft leasing market. Run it with the yield on cost calculator, compare to market with the cap rate calculator, and stress-test the full plan in the deal analyzer.