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How Much Do You Need Down to Build a Custom Home?
Editorial review: My Construction Path team ·
How much you need down depends on the loan program, your total project cost and whether you already own the land. Land you own often counts toward your contribution. Some programs offer a low down payment option for eligible borrowers, and VA loans offer flexible down payment options for eligible Veterans. Your lender confirms the amount on your Loan Estimate.
Last updated: November 2, 2026
What does your contribution to a custom build cover?
It is your share of the total project cost, the part the loan doesn't cover. On a custom build, that total is more than the builder's price.
| Cost | Usually part of the total project cost? |
|---|---|
| Land, if you are buying it | Yes |
| Builder's contract price | Yes |
| Site work: well, septic, driveway, utilities | Yes, if in the contract or budget |
| Permits, plans and engineering | Often |
| Contingency reserve | Often required by the lender |
| Upgrades and change orders after closing | Usually paid by you |
| Cash reserves the lender wants to see | Separate from the contribution |
A larger budget or a lower appraisal can change what you need to bring. Time matters too, since longer builds can mean more carrying costs. As of the Census Bureau's 2025 annual data, published July 1, 2026, contractor-built homes took an average of 10.5 months from start to completion (Census start-to-completion table). Our contingency calculator can help you size a cushion. The construction loan calculator shows a rough range, including the cash needed when you don't own the lot yet.
Can land equity count as your down payment?
Often, yes. If you own the lot, its value or equity can count toward what you contribute.
FHA says this directly. HUD's Mortgagee Letter 2019-08 says the borrower "may utilize any cash investment in the Acquisition Cost of the Property or land equity to satisfy the Minimum Required Investment." Conventional single-close loans treat owned land as part of the as-completed value. How long you have owned the land can change how it is valued.
Use our land equity calculator for a rough picture. Then read how land equity works on a construction loan, building on land you own free and clear or building on land you're still paying off.
Can I build with a smaller down payment?
Some programs make it easier, if you qualify. Each sets its own rules for occupancy, income, property and builder.
- FHA one-time close offers a low down payment option for eligible borrowers building a primary residence. See FHA construction loan requirements.
- VA construction loans offer flexible down payment options for eligible Veterans. VA says its purchase loan "can help you buy, build, or improve a home" (VA purchase loans). Read our guide to VA construction loan down payment options.
- USDA single-close offers a low down payment option for eligible borrowers in eligible rural areas, with income limits. See building a custom home on rural land or acreage.
- Conventional single-close programs may offer a low down payment option for eligible borrowers. Many custom and luxury builds still use a larger contribution, especially for loans above the conforming limit (FHFA conforming limit page).
For higher price points, see financing a mid-range custom home and financing a luxury custom home.
Can gift funds help with a construction loan down payment?
Often, yes, for a home you will live in. You'll need the right donor, a gift letter and a paper trail for the money.
Who can give. Fannie Mae allows gifts on a principal residence or second home from "an acceptable donor," such as a relative or someone with a family-like relationship (Fannie Mae Selling Guide B3-4.3-04). It also says, "Gifts are not allowed on an investment property." FHA's list is broader and includes family members, employers, close friends with a documented interest, charities and government homeownership programs.
The builder rule. This matters on a custom build. Fannie Mae says, "The donor may not be, or have any affiliation with, the builder, the developer, the real estate agent, or any other interested party to the transaction." A builder credit is not the same as a gift.
The gift letter. FHA requires a gift letter signed and dated by the donor and the borrower. HUD's Handbook 4000.1 says it must include "the donor's relationship to the Borrower" and "a statement that no repayment is required," along with the donor's contact details and the gift amount.
The transfer. Lenders want to see the money move. Keep bank statements, a copy of the check or wire, and deposit records. HUD also states, "Cash on Hand is not an acceptable source of donor gift funds" (HUD Handbook 4000.1).
Gifts of land. A relative may give you the lot itself. For FHA, the lender must get "proof of ownership by the donor" and "evidence of the transfer of title to the Borrower." See building on inherited land for related title steps.
Does a builder deposit count toward your contribution?
It can, if you can show where the money came from and the lender credits it. Paying a large deposit before closing has risks, though. Read how a builder deposit affects your construction loan before you write the check.
Your contribution is separate from closing costs, so plan for both.
Frequently asked questions
How much money do I need down to build a custom home?
It depends on the program, the total project cost and whether you own the land. Land equity often counts toward your contribution. Ask lenders for a Loan Estimate on your actual budget.
Can I build with a smaller down payment?
Some programs offer a low down payment option for eligible borrowers, including FHA and USDA single-close loans. VA construction loans offer flexible down payment options for eligible Veterans. Requirements vary.
Can gifted funds be used for a construction loan down payment?
Often, yes, for a primary residence. You'll need a signed gift letter and records of the transfer. A donor tied to your builder usually isn't allowed.
Does my builder deposit count?
It can, if you document where the money came from and the lender credits it in the loan file. Ask before you pay it.
Sources
- HUD Mortgagee Letter 2019-08, Construction to Permanent and Building on Own Land
- HUD Handbook 4000.1, gift funds (Last Revised 05/20/2024)
- Fannie Mae Selling Guide B3-4.3-04, Personal Gifts
- VA, purchase loans
- FHFA, conforming limit values
- U.S. Census Bureau, start-to-completion times
Planning your contribution?
Tell us about your land, your budget and any gift funds, and we'll connect you with lenders who can explain your options. Get connected at My Construction Path.
My Construction Path is not a lender and does not make loans or credit decisions. Not all borrowers will qualify. Equal Housing Opportunity. Requirements vary by lender, loan program, and location. This article is for general education and is not a commitment to lend. It is not a quote of rates, payments, or loan terms.