Only about 22% of new-home builders are aware that a one-time close construction loan even exists as an option. That number comes from a National Association of Home Builders survey, and every time I see it, I think about all the people who went the harder, more expensive route simply because nobody told them there was a better one.

If you’re reading this, you’re probably somewhere between “we want to build instead of buy” and “okay but how does any of this actually work.” Maybe you’ve done some searching and hit walls of jargon. Maybe someone at a bank mentioned a construction loan and then your eyes glazed over. That’s fine. That’s exactly where most people start.

Here’s what I tell people who come to me in that spot: building a home involves two distinct money problems. First, you need cash to build. Then, you need a mortgage to own. The traditional path treats those as two separate loans, two separate closings, two sets of closing costs, and two rounds of qualification. The one-time close (also called a construction-to-permanent loan, or OTC) collapses that into a single transaction. One approval, one closing, one loan that converts automatically when the house is done.

Key takeaways
  • A one-time close loan combines construction financing and your permanent mortgage into a single closing, saving $3,000–$7,000+ in duplicate closing costs.
  • You qualify once and lock your permanent rate upfront, protecting you from rate increases during the build (typically 6–18 months).
  • Down payment requirements usually start around 3.5% for FHA one-time close, 0% for VA/USDA versions, and 5–20% for conventional.
  • Lenders draw funds in stages (called "draws") to your builder , you don't touch the money; the builder does.
  • Not every lender offers this product, and not every builder is approved to work with it.

How the Money Actually Moves

This is the part that trips people up the most, so let me walk through it concretely.

When you close on a one-time close loan, you’re signing for the full amount you’ll eventually owe: say, $380,000 for land, construction costs, and the finished-home mortgage. But you don’t get that money. Your builder does, in pieces, called draws.

Here’s how a typical draw schedule looks: the lender releases a chunk when the foundation is poured, another when framing is done, another after rough plumbing and electrical are inspected, and so on. Before each draw, a lender-ordered inspector visits the site to verify the work was actually completed. In my experience sitting in on these closings, borrowers are sometimes surprised to learn that this inspection isn’t the same as a home inspection protecting them. It’s protecting the lender. If you want your own eyes on the build quality, budget for a separate independent inspector at each phase. It costs around $300–$500 per visit and is almost always worth it.

During construction, you typically make interest-only payments on what’s been drawn so far. So if $120,000 has been released to the builder, you’re only paying interest on that $120,000, not the full loan amount. Once construction wraps and the certificate of occupancy is issued, the loan “converts” automatically (or with minimal paperwork, depending on your lender) to a standard amortizing mortgage at the rate you locked on day one.

One-Time Close vs. Two-Time Close: The Real Comparison

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I spent years watching borrowers choose the two-loan route without realizing they were paying twice for the same service. Here’s where the numbers land.

FeatureOne-Time CloseTwo-Time Close
Number of closings12
Typical closing costs$4,000–$8,000 (once)$8,000–$16,000+ (paid twice)
Rate lockAt initial closingSecond loan rate is unknown until construction ends
Qualification processOnceTwice (re-qualify after build)
Risk if rates riseNone (rate is locked)Full exposure during build period
Flexibility to change plansMore limitedCan adjust loan amount at second close
Lender availabilityFewer lenders offer itWidely available
Typical build period allowedUp to 12–18 monthsUp to 12 months (varies)

That rate-risk row is the one I want you to sit with. If your build takes 14 months and rates move up by a point during that time, a two-time close borrower refinancing into a permanent mortgage is now looking at a materially higher monthly payment for 30 years. That happened to a lot of people in recent cycles. A one-time close borrower doesn’t have that problem because the permanent rate was set at the start.

The downside of the OTC? Less flexibility. If your project balloons in cost, your loan amount is already set. You’ll need to negotiate a change order or pay out of pocket. That’s a real constraint.

What Lenders Are Actually Looking For

Current as of July 2026, the qualification standards across one-time close products look roughly like this:

The FHA version (backed by the Federal Housing Administration) requires a minimum 580 credit score for the 3.5% down option, or 500 with 10% down. It’s the most accessible entry point and the Consumer Financial Protection Bureau has a solid breakdown of FHA loan requirements if you want to cross-check anything. The VA one-time close is available to eligible veterans with no down payment and no mortgage insurance, which is an extraordinary benefit that not enough veterans know they can use for new construction. USDA one-time close covers rural and some suburban areas with zero down as well.

Conventional one-time close loans typically require 680+ credit and 10–20% down, though some lenders go lower. Debt-to-income limits generally cap around 43–45%, same as standard mortgages.

What surprises borrowers: your builder has to be approved too. Not just licensed and insured, which is the baseline, but specifically vetted by the lender. Lenders review the builder’s financials, their track record, and sometimes their contract language. I’ve seen deals fall apart not because the borrower had a problem, but because their preferred contractor couldn’t get through the lender’s builder approval process. If you have a builder in mind already, start that conversation with your lender early. Do not wait until you’re two weeks from closing.

Typical Down Payment by Loan Type (One-Time Close)
FHA3.5%
VA0%
USDA0%
Conventional (min)5%
Conventional (typical)20%
Source: FHA, VA, USDA, FHFA guidelines, 2026

The Federal Housing Finance Agency (FHFA) sets the conforming loan limits that affect whether your construction loan qualifies as conventional or jumbo, so if you’re building in a high-cost area like coastal California or metro Seattle, check the current limits for your county before you assume what product applies to you.

Three Real Scenarios

Couple building in rural Tennessee, $275,000 total project cost, using USDA one-time close → Zero down payment, single closing, build took 11 months → Converted to 30-year fixed at the rate locked before groundbreaking, avoided a second closing and the uncertainty of where rates would be a year out.

Veteran in Texas, $420,000 build, VA one-time close → No down payment, no PMI, one closing → Saved approximately $6,200 in duplicate closing costs vs. the two-loan route; rate held steady while conventional 30-year rates moved during the build period.

First-time buyer in suburban Ohio, $310,000 build, FHA one-time close, 620 credit score → 3.5% down ($10,850), single qualification → Project finished 6 weeks late due to supply delays; because the loan was already closed and the rate was locked, the delay was inconvenient but not financially catastrophic the way it might have been with an expiring rate lock on a second loan.

That last scenario is something I want to emphasize. Build delays are normal. Supply chains are still inconsistent in many regions. A one-time close loan’s locked rate doesn’t expire the way a standard mortgage rate lock does during construction. That’s not marketing language. It’s a genuine structural advantage.

Things I’d Tell You to Watch Out For

I thought for years that one-time close loans always carried higher interest rates than two-time close loans. That reputation was earned in earlier markets, and it wasn’t entirely wrong. But the gap has narrowed, and in today’s environment I’ve seen competitive pricing on OTC products from multiple lender types. Shop at least three lenders who specifically offer this product, not three generic mortgage lenders, because not all loan officers have closed many of these and the ones who haven’t can cost you time and errors.

Watch the contingency budget. Most lenders want to see a 10–15% cost contingency baked into the loan for cost overruns. That’s not wasted money; it sits in reserve. But it does affect your total loan amount and therefore your qualification math.

Also: read the builder contract carefully before you close. The lender will want to see it anyway, but you should understand what the builder’s obligations are if the project runs over timeline or budget. A good real estate attorney reviewing that contract is $500–$1,500 well spent.

Sources

Photo: Ryan Stephens via Pexels

This article is for educational purposes only and does not constitute financial or mortgage advice. Mortgage rates change daily and vary by lender, loan type, credit profile, and property details. Consult a HUD-approved housing counselor (find one at hud.gov) or licensed mortgage professional for guidance specific to your financial situation.

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