Construction Loan Down Payment Requirements: How LTC Really Works
If you're used to residential mortgages, you probably think of a down payment as a fixed number — 3%, 10%, 20% — set before you even shop for a lender. Construction loan down payment requirements don't work that way. Instead of a flat percentage of purchase price, construction lenders talk in terms of loan-to-cost (LTC): the percentage of your total project budget the lender is willing to finance.
What loan-to-cost (LTC) actually means
Loan-to-cost is the ratio of the loan amount to the total cost of the project — land acquisition (if applicable), hard construction costs, soft costs, and often a contingency reserve. A lender offering "up to 90% LTC" is saying it will finance up to 90% of that total project cost, leaving the borrower to cover the remaining portion.
This differs from loan-to-value (LTV), which measures the loan against the finished, appraised value of the property. LTC looks backward at what the project costs to build; LTV (or after-repair value, ARV, in the fix-and-flip world) looks forward at what it will be worth once complete. So when a builder asks "what's the down payment on a construction loan," the honest answer is: it depends on the LTC the lender approves for your deal, and the remainder of total project cost is roughly what you'll need to bring.
Translating LTC into a contribution percentage
Here's the practical math. If a lender approves financing at up to 90% LTC on a $1,000,000 project, that means up to $900,000 of project cost can be financed, and the borrower is typically responsible for covering roughly the remaining $100,000 or more — call it a rough floor of about 10%, though the real number for any given deal can land higher depending on how the lender underwrites that specific project.
Frame this as approximate. LTC maximums are a ceiling, not a guarantee, and the approved ratio on any individual deal depends on the borrower's experience, the project type, and the lender's own risk assessment. The loan programs available through BldFi illustrate the range: New Construction goes up to 90% LTC on loans from $250K to $5M, while Renovation tops out at 85% LTC on loans from $75K to $2M, reflecting the different risk profile of remodeling work. In both cases, the "up to" ceiling is the best case for a strong borrower with a solid project — not a number every applicant automatically receives.
What counts toward your side of the ledger.
Your required contribution doesn't always have to be cash sitting in a bank account. Depending on the lender and the deal, several things can count toward your contribution — the key is that lenders underwrite total project cost and your stake in it, not just a wire transfer.
Factors that move your required contribution up or down
Because LTC ranges are expressed as a ceiling, where your deal actually lands within that range depends on several variables.
Builder and borrower experience
Lenders weigh track record heavily. A builder with multiple completed projects, a clean draw history, and a habit of finishing on budget is lower-risk than a first-timer. Experienced borrowers tend to get closer to the top of the LTC range; newer builders should expect to bring a larger contribution.
Land ownership status
Whether you already own the land — free and clear or with meaningful equity — versus purchasing it in the same transaction makes a real difference. Owned land credited as equity reduces the fresh cash you need; land being acquired simultaneously is typically treated as part of total project cost, raising the cash required upfront.
Project type and complexity
Ground-up construction, renovation, and fix-and-flip projects carry different risk profiles, which is part of why LTC and ARV ceilings differ across loan products. A straightforward renovation is generally easier to underwrite than a complex custom build.
Market and property risk
Location, exit strategy, comparable sales, and overall market conditions all factor into a lender's comfort level. A project in a strong, well-comped market with clear demand may support a higher LTC than one in a thin or unproven market, all else being equal.
How this differs from a traditional mortgage down payment
A conventional mortgage down payment is calculated against a known, appraised purchase price on a property that already exists. Construction financing is different: the asset doesn't fully exist yet, costs are disbursed in stages via draws as work is completed, and risk shifts throughout the build. That's why lenders anchor to LTC (and ARV for value-add and flip deals) rather than a single upfront percentage. Your "down payment" is really your equity contribution to total project cost — and it can be satisfied with more than a cash deposit at closing.
How to minimize out-of-pocket cash.
Own your land before you approach a lender
Free-and-clear land, or land with substantial equity, is one of the most effective ways to reduce the fresh cash you need.
Build a track record
Even a couple of completed, well-documented projects can move you toward the higher end of a lender's LTC range.
Keep your budget tight and realistic
A well-documented budget with an appropriate contingency gives lenders confidence in the cost figure your LTC is based on.
Ask what counts as contribution
Don't assume cash is the only acceptable form of equity — ask whether land equity or completed work can offset your requirement.
Match the loan product to the project
Renovation, ground-up, and fix-and-flip deals carry different LTC/ARV structures, so the right program can materially change your required contribution.
Structure your next deal with a lender who understands LTC
Construction loan down payment requirements come down to understanding loan-to-cost, not memorizing a fixed percentage. The more clearly you can present your experience, your land position, and a realistic project budget, the more control you have over how much cash you actually need to bring to closing.
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