Loan-to-cost ratio (LTC) is the loan amount divided by the total cost of a construction or value-add project, expressed as a percentage. It measures how much of the total budget a lender will finance versus how much equity the sponsor must contribute. LTC is the leverage constraint that governs most construction loans.
How Is Loan-to-Cost Ratio Calculated?
Loan-to-cost ratio is calculated by dividing the total loan amount by the total project cost, then multiplying by 100. The formula is LTC = (Loan Amount / Total Project Cost) x 100. A $3,000,000 loan on a $4,000,000 project is a 75% LTC, meaning the lender funds 75% of the budget and the sponsor contributes the remaining $1,000,000 as equity.
Per Wall Street Prep and Commercial Real Estate Loans, total project cost is the full development budget, not just the purchase price. It includes land acquisition, hard costs such as materials and labor, soft costs such as permits and design fees, financing costs, and contingency. Understating the cost base inflates the apparent LTC and misstates how much equity the deal truly requires.
Input | Definition |
Loan amount | The principal the lender advances toward the project |
Total project cost | Land, hard costs, soft costs, financing costs, and contingency |
LTC | Loan amount divided by total project cost, as a percentage |
Equity | The remaining share the sponsor funds, or 100% minus LTC |
What LTC Do Construction Lenders Allow?
Construction lenders commonly cap loan-to-cost ratio between 70% and 80%, with the ceiling set by asset type, sponsor experience, and market conditions. Per Commercial Real Estate Loans and CommLoan, the market maximum sits around 80% to 90% in favorable conditions, and Capital Direct Funding notes that ground-up and transitional deals have compressed toward 65% to 70%.
A higher LTC means the lender funds more of the budget and the sponsor contributes less equity, which raises the lender's risk and usually the loan's price. Lower LTC loans carry a larger equity cushion, so they price tighter and clear underwriting more easily. In a cautious lending market, the LTC ceiling is the first lever lenders pull down.
Condition | Typical maximum LTC |
Favorable market, experienced sponsor | 80% to 85% |
Standard construction loan | 70% to 80% |
Ground-up or transitional, current market | 65% to 70% |
First-time sponsor or higher-risk asset | Below 65% |
The operative point for a sponsor: the stated LTC ceiling is a maximum, not a guarantee. The loan is sized by whichever constraint binds first, and lenders run LTC against the loan-to-value test, then size to the more conservative of the two.
Example
A sponsor develops a project with a $1,000,000 land cost, $2,400,000 in hard costs, $500,000 in soft costs, and $100,000 in contingency, for a $4,000,000 total. A lender offers 75% LTC. The table sizes the loan, the equity, and the effect of a $400,000 cost overrun.
Item | Calculation | Result |
Total project cost | $1,000,000 + $2,400,000 + $500,000 + $100,000 | $4,000,000 |
Loan at 75% LTC | 75% x $4,000,000 | $3,000,000 |
Required equity | $4,000,000 - $3,000,000 | $1,000,000 |
Cost overrun to $4,400,000 | Loan held at $3,000,000 | Equity rises to $1,400,000 |
At a $4,000,000 budget and 75% LTC, the loan is $3,000,000 and the sponsor funds $1,000,000. If costs overrun by $400,000 to $4,400,000, most construction lenders hold the loan at $3,000,000 rather than fund 75% of the higher number, so the sponsor covers the full overrun and required equity rises to $1,400,000. Cost overruns land on the sponsor, not the lender.
Variations and Edge Cases
Loan-to-cost ratio has close leverage relatives measured against different denominators, and they are easy to confuse. LTC uses total cost, while other ratios use current value or projected stabilized value. The table separates the common variants a sponsor should confirm before comparing quotes.
Variant | Denominator | Typical use |
LTC (loan-to-cost) | Total project cost | Construction and heavy value-add loans |
LTV (loan-to-value) | Current or stabilized value | Stabilized acquisitions and refinances |
LTARV (loan-to-after-repair-value) | Projected stabilized value | Bridge and renovation loans |
Combined LTC | Total cost, across all financing | Deals with mezzanine or preferred equity |
The frequent error is comparing an LTC quote to an LTV quote as if they measure the same thing. A 75% LTC on a project that will be worth more finished than it cost to build can equate to a far lower LTV. Confirm the denominator before treating two leverage figures as comparable.
Loan-to-Cost Ratio vs Loan-to-Value Ratio
Loan-to-cost ratio is often confused with loan-to-value ratio, and both size a loan against a base, but the base differs. LTC divides the loan by total project cost, what the sponsor spends to build. LTV divides the loan by appraised value, what the finished asset is worth. On the same deal, LTC and LTV usually produce different numbers.
The practical difference is which test binds and when. During construction, LTC is the binding constraint because value is speculative until the project delivers. At stabilization, LTV governs the take-out refinance and supplemental debt. Lenders run both, then size the loan to the more conservative ratio, so a project can be capped by LTC in one phase and LTV in the next.
Frequently Asked Questions
How is loan-to-cost ratio calculated?Loan-to-cost ratio is calculated by dividing the total loan amount by the total project cost and multiplying by 100. Total project cost includes land, hard costs, soft costs, financing costs, and contingency, so a $3,000,000 loan on a $4,000,000 project is a 75% LTC.
What is a typical loan-to-cost ratio for a construction loan?Construction lenders typically cap loan-to-cost ratio between 70% and 80%, though favorable markets can reach 80% to 85% and current ground-up deals have compressed toward 65% to 70%. Lower LTC means more sponsor equity and usually a lower loan price.
What is the difference between loan-to-cost and loan-to-value?Loan-to-cost divides the loan by total project cost, while loan-to-value divides it by appraised value. LTC governs construction, when value is speculative, and LTV governs the stabilized take-out. Lenders run both tests and size the loan to the more conservative ratio.
Related Terms
Loan-to-Value Ratio
Development Spread
Yield on Cost
Bridge Loan
Non-Recourse Loan