Yield on cost is stabilised net operating income divided by total project cost, expressed as a percentage. Stabilised NOI means the asset's annual income after operating expenses once it is fully leased and operating. Total project cost is the full outlay needed to deliver that asset. Bridge's calculator uses the same formula.
TL;DR:
- Build stabilized NOI from fully leased annual rent after vacancy and owner paid operating costs; exclude debt service, depreciation, and income tax.
- Include land acquisition, construction, consultants, approvals, contingency, and construction period interest in project cost, or exclude financing consistently and disclose the choice.
- Compare yield on cost with recent sales of similar assets in the same location; developers commonly target a 150 to 250 basis point spread.
- Test lower rents, higher construction costs, delayed leasing, and a higher exit cap rate, then review yield alongside profit on cost and IRR.
Table of Contents
- What goes into stabilised NOI and total project cost
- Worked example: calculating yield on cost step by step
- How to read yield on cost against the market cap rate
- Practical steps for calculating yield on cost in a feasibility appraisal
- Benchmarks practitioners use to judge viability
- Making yield on cost work in real decisions
- What can you do with our feasibility reports?
- FAQ
- Sources
What goes into stabilised NOI and total project cost
The formula is simple. The discipline is in deciding what belongs in each input, because a loose numerator or an incomplete denominator produces a flattering yield that falls apart in the first lender meeting.
Stabilised NOI is rental income less the costs of running the building, measured once leasing has settled. It is not the income in the first month after practical completion, and it is not a best-case rent roll.
- Income lines: contracted or market rents at full occupancy, less a realistic vacancy and collection allowance, plus any recoverable outgoings and ancillary income you can evidence.
- Operating expenses: property management, repairs and maintenance, insurance, council rates and land tax where the owner bears them.
- Exclusions from NOI: loan repayments, depreciation and income tax, since these depend on how you finance and own the asset rather than how the building performs.
- Land and acquisition: the purchase price plus stamp duty, legal costs and holding costs while approvals proceed.
- Hard costs: construction, demolition, site works and services connections.
- Soft costs: consultants, permits, marketing and leasing fees, plus statutory charges and a contingency allowance.
- Financing costs: interest and fees during construction and lease-up. Whether to include them is a modelling choice, so decide once and state it.
Timing matters as much as content. Annualise NOI for the stabilised year and make sure the cost assumptions line up with that same year. Mixing today's rents with escalated future construction costs, or the reverse, quietly distorts the answer.
Worked example: calculating yield on cost step by step
To keep the arithmetic visible, take an illustrative small apartment project. These inputs are made up for demonstration and are not market data.
- Stabilised NOI: $1,200,000 a year after vacancy and operating expenses.
- Cost stack: land and acquisition, construction, soft costs and statutory charges, finance and contingency.
- Total project cost: $4,000,000 + $7,000,000 + $1,000,000 + $1,000,000 = $13,000,000.
- Yield on cost: $1,200,000 ÷ $13,000,000 = 9.23%.
- Implied value at a 7.5% market cap rate: $1,200,000 ÷ 0.075 = $16,000,000, which is $3,000,000 above cost.
Yield on cost of 9.23%: the same inputs appear in Bridge's worked example. The yield is the measure of what the project earns on every dollar put into it.
A second published case shows the formula at another scale. Wall Street Prep's development yield example divides $340,000 of NOI by $2,750,000 of total development cost to reach 12.4%. The same site's yield on cost explainer works $2.4 million over $40 million to 6.0%. The calculation never changes, only the inputs do.
How to read yield on cost against the market cap rate
A yield on cost means little in isolation. What matters is how it compares with the cap rate at which comparable stabilised assets trade. That gap is the development spread: yield on cost minus the market cap rate.
Using the example above, 9.23% less 7.5% is a spread of about 173 basis points. Bridge reports that developers typically target 150–250 basis points of spread over the market cap rate. Our example sits inside that band.
- What the spread means: it is the extra return you earn for building rather than buying a finished asset. A positive spread suggests the finished building is worth more than it cost to create.
- How it converts to value: capitalising the same NOI at the market cap rate gives the implied value. At 7.5%, our $1,200,000 of NOI supports $16,000,000 against $13,000,000 of cost.
- Why it has to be wide enough: construction overruns, slower lease-up and a softer exit market can all erode the margin. The spread is the cushion that pays for those risks.
- Why a thin spread is a warning: if yield on cost barely clears the cap rate, a small rise in costs or a small slip in rent turns the project into a value-destroyer.
The cap rate you compare against should be for the same asset class and location, taken from recent sales rather than a rule of thumb. Where cap rates are moving, test the spread at a higher exit cap rate as well as today's.
Practical steps for calculating yield on cost in a feasibility appraisal
A repeatable process beats a clever spreadsheet. This is the order we follow when checking a site.
- Set the stabilisation year. Decide when the asset is fully leased, then derive annualised NOI from rents, vacancy and operating expenses for that year.
- Compile the full cost stack. Include land, hard costs, soft costs, statutory charges, contingency and financing costs. Confirm whether financing sits inside total cost in your model, and keep that treatment fixed.
- Calculate yield on cost and set it against a market cap rate. Then run sensitivities: rents down, construction costs up, a longer lease-up, a higher exit cap rate.
- Report it alongside other measures. Show profit on cost and IRR next to yield on cost, and write down every key assumption so stakeholders can challenge it.
Pro Tip: Build one sensitivity table that moves rent and construction cost together, because those are the two inputs that most often move against you at the same time.
A few modelling habits prevent most errors. Keep the timing consistent across income and cost. Use a range of scenarios instead of a single point estimate. Flag assumptions in the report itself so that a reader never has to reverse-engineer them. Yield on cost also suits redevelopment and refurbishment, where total cost should include the existing asset's value or purchase price plus the new works, and where income should reflect rents after the upgrade rather than before it.
Zoning and planning changes feed straight into both inputs. A higher permitted density can raise stabilised NOI, but it also lifts construction cost, statutory charges and approval time, so rerun the full cost stack rather than adjusting one line. If you want planning controls and cost estimates pulled together early, our feasibility reports do that in one place.
Benchmarks practitioners use to judge viability
Yield on cost is one lens. Practitioners also check profit on cost, which measures the development margin as a share of total cost.
- Typical targets: RICS reporting on developer returns found required profit margins were between 15 and 20 per cent in most cases, with 20 per cent mentioned regularly for lower-risk sites.
- Higher-risk sites: the same source cites 25 per cent where the perceived risk is higher.
- How the measures relate: profit on cost looks at the margin on exit, yield on cost looks at the income return, and IRR adds timing. Together they catch problems that any one of them hides.
- Conservative approach: use the upper end of the margin range when the site carries approval, contamination or pre-leasing risk.
- Opportunistic range: the lower end can be defensible for well-understood sites with fixed-price construction and strong pre-commitments.
Treat these as screening ranges, not rules. They tell you when a project deserves a closer look, not whether to commit.
Making yield on cost work in real decisions
Yield on cost earns its keep in the first pass of a feasibility check. It is quick, it needs few inputs, and it signals whether value is likely being created. That is also its limit: it ignores timing, so a project with a handsome yield and a lengthy approval delay can still underperform.
My advice is to never let a single yield on cost number leave the building. Show the assumptions, show the downside case, and set the result beside profit on cost and IRR. The appraisers I trust most are the ones who volunteer how their number could be wrong.
— Ashton
What can you do with our feasibility reports?
If you are weighing up a site, the slow part is usually gathering planning controls, statutory costs, build costs and end values before you can even run the yield. We offer an Automated Report, a Founder-Reviewed Report, a Development Concierge service and a Quick Scan, so you can match the depth to the stage you are at. Our reports bring planning data and market benchmarks into feasibility analysis, with founder-reviewed conclusions rather than automated or AI-only ones. There is no lock-in subscription. Current prices are on our pricing page. Start with a Quick Scan or full report at SiteScope and get your yield on cost modelled against real site controls.
FAQ
What is a good yield on cost for a development?
A good yield on cost is one that clears the market cap rate by enough to pay for construction and lease-up risk. Bridge reports that developers typically target 150–250 basis points of spread over the market cap rate. The right figure depends on asset class, location and project risk.
What is the difference between yield on cost and cap rate?
Yield on cost divides stabilised NOI by what it cost to build or redevelop the asset. Cap rate divides NOI by the value at which a comparable stabilised asset trades. Comparing the two produces the development spread, which shows whether building creates value over buying.
Should financing costs be included in total project cost?
It is a modelling choice, so decide once and state it clearly. Many appraisers include interest and fees during construction and lease-up, because they are a real cost of delivering the asset. Whatever you choose, apply it consistently across projects so results stay comparable.
Is yield on cost the same as development yield?
Yes, in common usage. Wall Street Prep defines development yield as stabilised NOI divided by total development cost, which is the same calculation as yield on cost. Some practitioners use one term for new builds and the other for redevelopment.
Sources
- Yield on Cost Calculator | Bridge
- Development Yield | Formula + Calculator
- Approaches to developer returns in appraisals | Journals | RICS