Two ratios appear on virtually every development financing term sheet, and they are routinely confused because both compress the same loan into a single percentage. They measure different things. Loan-to-cost asks: of every dollar this project consumes, how many are the lender's? Loan-to-value asks: if this project had to be sold as completed, how much cushion stands between the sale proceeds and the loan? A developer who understands which question is constraining a given file negotiates from a fundamentally better position.
This article defines both ratios precisely, shows the appraisal premises that feed them, and walks a full computation in which the binding constraint flips, because that flip is exactly what happens in live underwriting when an appraisal disappoints.
Loan-to-cost: the funding question
Loan-to-cost divides the loan commitment by the total project cost: the complete sources-and-uses, not just the construction contract. The denominator should carry land or site basis, hard costs, soft costs, financing costs, interest carry, and contingency. Leaving items out of the denominator flatters the ratio and fools no one who matters.
The ratio expresses risk-sharing. The lender's share of the cost is the loan; the remainder is the sponsor's equity, in whatever combination of cash, land basis, and documented predevelopment spending the structure recognizes. Because construction lenders fund a project as it is built, cost discipline is their first-order concern: a loan sized against an honest budget, drawn against inspected work, stays in balance. That is why construction facilities are quoted primarily on a cost basis, with sizing confirmed file by file during project review.
Loan-to-value: the cushion question
Loan-to-value divides the loan by an appraised value. On development projects the appraisal is not one number but a set of premises: the as-is value of the property today, the prospective value as-completed, and, for rental product, the prospective value as-stabilized, after lease-up reaches a supportable level. Appraisal standards bodies define these premises precisely, and the loan documents specify which premise each test references.
The ratio expresses downside protection. If the project must be sold, the gap between value and loan absorbs price weakness, transaction costs, and time. A completed-value ratio also quietly encodes the project's margin: when completed value sits far above cost, the value ratio is comfortable at the same loan amount that makes the cost ratio look aggressive, and vice versa. Thin-margin projects show their thinness here first.
The two constraints, computed together
Every construction file computes both ratios, and the tighter one governs the proceeds. The interaction is easiest to see with numbers.
That flip is not an edge case. It is the standard mechanism by which a soft appraisal becomes a bigger equity check, and it is why experienced sponsors model a value miss before application rather than after.
Why construction lending leans on cost
During construction there is no finished asset to sell: there is a site, a stack of contracts, and work in progress that is worth less than it cost until it is nearly done. Cost-based sizing matches the lender's real exposure through that period: dollars advanced against dollars of inspected work. Supervisory guidance for regulated real estate lenders reflects the same logic, treating construction credit as its own discipline with its own monitoring.
Value takes over as the project nears completion. The takeout (a sale or a refinance) clears the construction loan against the finished asset's value and income, which is why the completed-value and stabilized-value premises get real scrutiny even at construction closing. A construction loan that fits cost but has no plausible value-based exit is not actually financeable; it is just deferred trouble. The margin between the two denominators is, in the end, the project's reason to exist: development only makes sense when finished value exceeds honest cost by enough to pay for the risk of the journey between them.
Reading the appraisal premises correctly
Three habits prevent most ratio surprises. First, match the premise to the moment: the as-is value governs land-heavy questions at closing, the as-completed premise governs the construction loan's exit cushion, and the as-stabilized premise governs the refinance conversation on rental product. Second, read the assumptions inside the appraisal (rent comparables, absorption pace, expense loads), because a reasonable-looking value built on unreasonable assumptions will not survive the takeout lender's review. Third, reconcile value against cost: when the two sit close together, the project's margin is thin, and both ratios will feel tight no matter how the term sheet is written.
It is also worth understanding the appraisal's own machinery before it arrives. Development appraisals typically triangulate a sales-comparison approach against a cost approach, and on income product an income approach as well; where the approaches disagree, the reconciliation section explains which evidence the appraiser trusted and why. Sponsors who read that section, rather than just the concluded number, learn exactly where their value is fragile, which is the same place the review appraiser and the takeout lender will press later. Supplying the appraiser with complete, organized information at engagement (plans, budgets, comparable data, absorption evidence) is not influence; it is the difference between a value built on your project's facts and one built on whatever the appraiser could find alone.
Sponsors can pressure-test all of this before any application. The loan-to-cost calculator and the loan-to-value calculator run the arithmetic both directions (loan from constraints, or ratios from a proposed loan) in a few minutes.
Common misreadings of the two ratios
A handful of recurring confusions distort these ratios in practice, and each one has cost real sponsors real money.
Land at basis versus land at value. A site bought well or carried through entitlement may be worth far more than it cost. Whether the cost denominator carries the purchase price or the current appraised value changes the measured loan-to-cost materially, and capital sources differ on the treatment. Clarify it before comparing term sheets, or the comparison is fiction.
The gross loan versus the funded balance. The commitment includes the interest reserve and financing costs; the balance outstanding on any given day does not. Ratios quoted against the full commitment describe the end state, not the current exposure. Both are legitimate measures; confusing them mid-negotiation is not.
Premise mismatches. Dividing today's loan balance by a stabilized future value produces a flattering, meaningless number. Every ratio should name its premise: as-is, as-completed, or as-stabilized. If a presentation quotes a single loan-to-value without saying which value, assume the most favorable premise was chosen and ask.
Contingency and the denominator. Contingency is a real cost and belongs in the cost base. Removing it to improve the measured ratio simply moves the problem into the construction period, where the same dollars will be spent without having been financed.
The pattern across all four: the ratios are only as honest as their definitions. Sophisticated counterparties do not manipulate the arithmetic; they interrogate the inputs.
How the ratios shape structure, not just size
The binding constraint influences more than proceeds. A cost-bound file negotiates hardest on what the denominator includes: land at basis or at appraised value, which soft costs count, how contingency is treated. A value-bound file negotiates hardest on the appraisal itself (premise definitions, comparable selection, and whether a stabilized premise is available) and on structures that bridge the gap, such as junior capital behind the senior loan.
Understanding which fight you are actually in saves weeks. A sponsor pushing for leverage on a value-bound file is negotiating with the wrong constraint; the appraisal, not the lender's generosity, is the ceiling. The reverse mistake, accepting thin proceeds on a cost-bound file without exploring how the denominator is measured, leaves real money on the table.
Where this shows up across a project's life
The two ratios trade prominence as a project matures. At land and predevelopment stage, as-is value dominates and cost is mostly future. Through construction, cost governs draws and rebalancing. At completion, the as-completed value steps forward for the construction-to-bridge or sale conversation, and for rental projects the as-stabilized value carries the permanent refinance. A capital plan that names which ratio governs each stage, and holds honest assumptions in both denominators, is the quiet mark of a prepared sponsor.
Evoque Commercial structures development financing around exactly that arc, and both calculators above feed directly into the project-review conversation.
