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One-time close construction loans
Build with a single closing that converts to your permanent mortgage when the house is finished, instead of a construction loan you have to refinance out of, and qualify for all over again, at the worst possible moment.
Last reviewed 22 August 2026 · Mark Ruhl, NMLS #105591
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One close vs. two
A one-time close construction loan closes once. You sign at the start, the lender advances money in stages as the build progresses, and when the house is finished that same loan converts by modification into your permanent mortgage. One set of closing costs, and one underwrite.
A two-close structure is two separate loans. First there's a short-term construction loan, usually from a bank's own portfolio and at a higher rate. Then, when the house is done, there's a completely separate refinance into permanent financing, which means a new application, a new underwrite, a new appraisal, and a second set of closing costs.
Two-close isn't automatically wrong. Some builds honestly need it, and if rates are falling it lets you capture the improvement. But most people end up in one without ever understanding what they've taken on.
What a two-close actually risks
You have to qualify again, twelve months later
This is the one that hurts. At completion you have to qualify for the permanent loan from scratch, and a lot can happen in the intervening year: you changed jobs, your income dropped, you bought a truck for the project, your credit score moved, or property taxes and homeowner's insurance went up and pushed your debt-to-income ratio up along with them.
Any one of those can leave you unable to refinance out of a construction loan that is about to mature, holding a finished house and a loan you can't replace. It's rare. It is also completely avoidable.
The house has to appraise
The permanent loan is sized on a fresh appraisal at completion. If the finished home appraises for less than it cost to build, which happens when a project runs over budget and is a live risk anywhere comparable sales are thin, you either bring cash to cover the gap or you don't close.
You carry rate risk the whole way
In a two-close, your permanent rate is whatever the market is offering on the day you finish, and you have no protection at all during construction.
Under Fannie Mae's rules, the credit documents obtained at the original closing can stand for up to 18 months, provided your loan-to-value was 95% or below and the file got an Approve/Eligible at closing. That single provision is what makes a one-time close work across a long build, and it's the concrete answer to "will I have to qualify again?"
Note the condition, though, because it's a trap for low-down-payment borrowers: above 95% LTV, credit documents go stale at four months.
How the loan works
Conventional single-close construction is classified one of two ways, and which one you land in comes down to a single fact:
- You don't own the lot yet at the first advance → it's a purchase, and loan-to-value is measured against the lesser of the purchase price or the as-completed appraised value.
- You already own the lot → it's a limited cash-out refinance, measured against the as-completed appraised value.
Cash-out refinance is not permitted on a Fannie Mae single-close. Freddie Mac's equivalent program does allow it on site-built homes, which occasionally matters.
Construction period: Fannie allows no single period longer than 12 months, with a total not exceeding 18 months, and you can stack periods (two six-month periods, or a twelve plus a six, and so on).
What can change at conversion: the interest rate, the loan amount (increases only for documented construction cost increases), the loan term, and the amortization type from adjustable to fixed. Anything beyond that forces you into a two-close structure after all. And notice that the rate can be modified downward, so a single close isn't a bet that rates won't improve.
At completion the lender needs a completion report from the appraiser, lien waivers from everyone who worked on the house, and the certificate of occupancy.
I don't publish down payment or rate ranges for construction loans, because the honest answer is that they vary enormously by lender overlay and I'd be making up a number to fill the space. Agency rules permit high loan-to-value on the conventional side, and individual lenders are usually stricter than the agencies are. Tell me your situation and I'll tell you what's actually available.
FHA, VA and USDA
FHA construction-to-permanent
It exists, at 3.5% down with a 580+ score. You have to contract with a licensed general contractor, and you can only act as your own GC if you are a licensed GC. Proceeds are held in escrow and released as construction progresses, and the lender must get your written authorization before each draw is paid out, which is a real borrower protection.
The practical problem is availability, because relatively few lenders offer it, and many that do impose credit overlays above FHA's floor.
VA construction loans
Available with no down payment for eligible veterans. One change from March 2025 you should know about: VA eliminated the builder identification number requirement, which makes it easier to get a builder approved. But in the same circular, VA stopped interceding in builder complaints, and it now refers veterans to local building departments, licensing boards, or a lawyer.
Less friction going in, and materially less backstop if it goes wrong. So verify your builder's Oregon CCB license yourself, hire your own inspector rather than relying on the lender's, and get the warranty in writing. VA still requires a one-year written builder warranty or a ten-year insured protection plan, so make sure you actually have that document in hand.
USDA single-close construction
This is the most generous of the three, and the most overlooked. No down payment, covering land acquisition plus construction costs. Builders must have at least two years of single-family experience, the required state license, and at least $500,000 in general liability insurance, and contractors can't build their own residence under it. Reserves can cover up to 12 months of payments during construction, and a contingency reserve of up to 10% is available.
Household income has to be at or below 115% of the area median, and the property has to be in an eligible rural area, which excludes Portland proper but includes real parts of outer Clackamas, Columbia, Yamhill and Marion counties. So if you're building outside the metro, ask me to check the eligibility map before you rule it out.
Draws and contingency
Money doesn't arrive all at once. It comes in draws, released as work is completed and verified, typically with an inspection at each stage.
Build a contingency reserve in. Every renovation and construction program either requires one or offers one, generally 10% to 20% of construction costs, and there's a reason for that: builds go over. On an FHA 203(k), the reserve floor rises to 15% if the property is uninhabitable or has water, mold or fire damage. USDA caps its optional contingency at 10%, which is thin for a custom build.
Here's one detail borrowers routinely misunderstand: under 203(k), unused financed contingency reduces your loan principal, while contingency you funded with your own cash gets refunded to you. So money left over isn't lost either way.
On the renovation side, HomeStyle now allows up to 50% of renovation costs to be disbursed at closing for materials, permits, design services and deposits, which is a meaningful improvement, because those bills land before construction starts.
Your builder, and what Oregon licensing does and doesn't do
Every construction program has builder requirements, and your lender will vet yours. In Oregon, verify the license yourself at the Construction Contractors Board lookup before you sign anything.
But understand what that license actually guarantees, because it's less than most people assume. A licensed Oregon Residential General Contractor carries a $25,000 surety bond and $500,000 in general liability coverage.
A $25,000 bond against a $400,000 build is not project insurance. It's a small pool that many claimants may be drawing from at the same time. CCB licensing tells you a contractor met a minimum standard, and that's all it tells you, because it does not protect your project if they walk off it.
Which is why references, a real contract with a payment schedule tied to completed work, your own inspections, and a lender-managed draw process all matter more than the license does.
Oregon's SB 974 (2025) requires local governments to confirm a permit application is complete within 30 days and approve or deny within 120, which is a useful floor to plan against, though design and bidding happen before that clock starts.
What goes wrong
- Cost overruns. The loan amount can only be increased for documented cost increases, and only within loan-to-value limits, so past the contingency reserve, overruns come out of your pocket.
- Blowing the construction window. Fannie's hard stop is 18 months total. FHA 203(k) allows 12 months standard, 9 limited. Freddie's CHOICERenovation allows 450 days plus a possible 90-day extension. Running long forces a restructure.
- Stale credit documents. That 18-month allowance requires 95% LTV or below and an Approve/Eligible at closing, and above 95% you're back to four months.
- Value coming in short at completion. If loan-to-value rises because the property appraised low, re-qualification is required.
- Contractor cash flow. HUD's stated reason for raising the Limited 203(k) draw count in June 2026 was that too few draws disrupts contractor cash flow and raises the risk of abandoned projects, which is the regulator confirming the failure mode.
Common questions
What does one-time close actually mean?
One closing, one set of closing costs, one underwrite. The construction loan converts to your permanent mortgage by modification when the build finishes, rather than being refinanced into a new loan.
Will I have to qualify again when the house is done?
Usually not. On a Fannie Mae single close, credit documents can stand up to 18 months if your loan-to-value was 95% or below and the file received an Approve/Eligible at the original closing. Re-verification is required if the LTV rose because the property lost value, if updated credit documents were pulled, or if the modified term exceeds tolerances.
Can I lock a lower rate if rates drop during construction?
Sometimes. The interest rate is one of the things that may be modified at conversion, and lenders can modify it downward to take advantage of lower rates. Some offer formal float-down options, and terms vary considerably, so ask before you assume.
Do I make payments while the house is being built?
Usually interest only, on the amount drawn so far, and often funded from a reserve built into the loan. USDA offers a version where full payments come out of reserves. FHA requires amortization to begin no later than the first of the month following 60 days after final inspection or certificate of occupancy.
Can I be my own general contractor?
On an FHA construction loan, only if you are a licensed general contractor. USDA prohibits contractors from building their own residence under its program. Conventional lenders vary, and most of them are unenthusiastic about it. So if you're planning to self-build, say so at the first conversation, because it narrows the lender list sharply.
Bring me the plans and the bid
Send me the lot, the builder, the construction budget, and roughly where you are on down payment. I'll tell you which structure fits, which lenders will actually do it, and what it costs, and I'd rather do all of that before you're committed to a builder or a timeline.
Sources: Fannie Mae Selling Guide B5-3.1-02 and B5-3.2-01, Announcements SEL-2025-08 and SEL-2025-10; Freddie Mac Guide Chapters 4602 and 4607; HUD Handbook 4000.1 and Mortgagee Letters 2024-13 and 2026-06; VA Circular 26-25-1 (31 March 2025) and the VA Lenders Handbook; USDA Rural Development single-close construction guidance (January 2026); Oregon Construction Contractors Board endorsement requirements; Oregon SB 974 (2025). Terms vary by lender and by program; nothing here is a commitment to lend.