What yield on cost measures
Yield on cost — also called return on cost or development yield — is the cap rate you manufacture instead of buy. Where a going-in cap rate divides today's NOI by what you pay for a finished building, yield on cost divides the stabilized NOI by everything it costs to get there: the land or purchase price, hard construction or renovation costs, soft costs, and the carry while you build and lease up. It answers the only question that justifies taking development or value-add risk: once this is done and full, what yield will I have created on every dollar I put in?
The formula and the spread that matters
Yield on cost = stabilized NOI ÷ total project cost. A project that stabilizes to $700,000 of NOI on $10,000,000 of all-in cost yields 7.0%. But the number that decides whether the project is worth doing isn't the 7.0% on its own — it's the development spread: yield on cost minus the market (exit) cap rate the finished asset trades at. At a 7.0% yield on cost in a 5.5% market, you've built a 150 bps spread, and that spread is where the equity profit comes from. Capitalize the same $700,000 of NOI at the 5.5% market cap and the finished asset is worth about $12.7M — roughly $2.7M of value created over the $10M you spent. That gap is the entire reason to build rather than buy.
| Development spread (YoC − market cap) | Read |
|---|---|
| ≥ 150 bps | Worth building — meaningful value created |
| 100 – 149 bps | Acceptable — real margin, stress it |
| 1 – 99 bps | Thin — little reward for the risk |
| ≤ 0 bps | No spread — buy stabilized instead |
Yield on cost vs cap rate
The two metrics look alike and answer opposite questions. The cap rate values an asset as it is today — NOI over price, on income that already exists. Yield on cost values an asset you don't have yet — stabilized NOI over total cost, on income you intend to create. On a stabilized, fully-let building with no capital plan the two converge, because there's no incremental cost to build into the denominator. Yield on cost only adds information when you're spending capital to change the income — a ground-up development, a heavy value-add reposition, a lease-up. The whole point of the exercise is to confirm the yield you're manufacturing is meaningfully higher than the yield you could simply buy.
What is a good yield on cost?
There's no universal yield-on-cost number, because it's only meaningful relative to the market cap rate in your submarket and asset class. The discipline is the spread, not the level: most institutional value-add and development underwriting targets at least 100 to 150 basis points of spread over the market exit cap to compensate for execution risk. A 6.5% yield on cost is excellent in a 5% market (150 bps) and a non-starter in a 6.5% market (zero spread). Thinner spreads leave no margin for the two things that go wrong most often: costs running over budget, and the exit cap expanding before you sell. Underwriters stress both against the spread before committing — a 150 bps spread that survives a 10% cost overrun and 50 bps of cap expansion is a real deal; one that only works at budget and at today's cap is a hope.
How to use it
Enter your stabilized NOI, the total project cost (or build it from land, hard costs, soft costs, and carry), and the market cap rate the finished product trades at. The calculator returns the yield on cost, the development spread in basis points, and the value created over total cost — and grades the spread against the 100–150 bps build threshold. If the spread is thin, the levers are the obvious ones: cut cost, raise stabilized rents, or walk. A high yield on cost on a budget you can't hit is the development version of a broker's pro forma — a number that only exists if everything goes right.
Read the full yield on cost definition and the cap rate vs yield on cost guide, compare the going-in and exit on the cap rate calculator, browse the metrics hub, and model the full build-to-exit in UpsideIQ. See pricing.