Quick answer
One-time close construction loans in 2025 enable borrowers to lock in a fixed interest rate before construction begins and maintain it for the entire loan term.
GO Mortgage makes this possible with fast, accurate disclosures and a single closing process—so you don’t risk higher rates or repeated paperwork later.
Lock in your rate before you build
If you plan to build a new home in 2025, locking in your mortgage rate early can make a significant difference.
A one-time close construction loan gives you the ability to secure a fixed interest rate before construction begins, without needing to refinance or reapply later.
Unlike two-time close loans, which require you to get a second mortgage after the home is built, a one-time close loan lets you close once and keep your interest rate for the life of the loan.
In today’s market, that level of efficiency and rate protection matters more than ever.
Apply for a one-time close construction loan with GO Mortgage.
What affects interest rates on one-time close loans
Interest rates on one-time close construction loans in 2025 are influenced by several factors:
- National mortgage rate trends
- Loan type (FHA, VA, or conventional)
- Down payment amount
- Loan term (15-year vs 30-year)
- Type of home (modular, stick-built, custom)
- The borrower’s credit score
- Property location and appraised value
FHA and VA one-time close loans typically offer competitive fixed rates with low or no down payment. Conventional loans may offer more flexibility in terms, but they can come with slightly higher rates, depending on credit risk and equity.
How a one-time close loan protects your rate
One of the biggest advantages of a one-time close loan is the rate lock feature.
You lock your rate before construction starts and hold it throughout the entire project, typically 6 to 12 months or more, without having to refinance.
This protects you from rising rates during the construction period, which could otherwise increase your monthly payment or affect affordability.
| Scenario | Traditional Loan | One-Time Close Loan |
| Rate Lock | Before construction and again before the mortgage begins | Locked once before construction |
| Number of Closings | Two | One |
| Risk of Rate Increase | High if market changes during build | Low rate is locked |
| Paperwork | Two sets of disclosures, applications, and approvals | One-time application and underwriting |
What are the 2025 interest rates for construction loans?
Interest rates fluctuate daily based on market conditions, but as of September 2025, average rates for one-time close construction loans fall into these general ranges:
| Loan Type | Typical Rate Range (Fixed 30-Year) |
| FHA One-Time Close | 6.250% – 6.875% |
| VA One-Time Close | 6.000% – 6.750% |
| Conventional One-Time Close | 6.500% – 7.250% |
*Actual rates depend on your credit score, loan amount, and the lender’s policies. Always request a formal Loan Estimate (LE) to compare.
How GoMortgage helps you lock in the best rate
GO Mortgage streamlines the entire rate lock process, allowing you to secure competitive interest terms quickly and confidently.
Here’s how:
- Same-day Loan Estimates (LE) so you know your rate options fast
- Timely Closing Disclosures (CD) to ensure your rate is locked and protected
- One application, one approval—you don’t have to start over when construction ends
- Experienced construction loan officers who understand how rate timing and market changes impact your budget
- Flexible lock periods to cover longer construction timelines, even up to 12 months
GoMortgage clients don’t have to chase down paperwork or worry about multiple closings. Once your loan is approved and you’ve locked in your rate, you’re set.
Why rate security matters during construction
Building a home takes time. And in today’s market, that time can introduce risk.
Mortgage rates can rise unpredictably, and even a small increase could add hundreds of dollars to your monthly payment. That’s why locking in your rate early is one of the most valuable benefits of a one-time close loan.
With GO Mortgage, you get:
- Rate consistency: The rate you lock before construction is the rate you’ll keep after construction
- Budget confidence: You can calculate your future mortgage payment months in advance
- No surprises: You won’t have to requalify or search for another loan when the home is complete
- Protection from inflation-driven hikes: Your interest rate won’t rise with market volatility during the build
For many borrowers, especially first-time homebuilders, this rate protection is just as important as the loan itself. GoMortgage provides you with the tools to act quickly and lock in early—helping you stay in control while your new home takes shape.
FAQ: Interest rates for one-time close loans
Q: Can I lock my interest rate before construction starts?
A: Yes. One-time close loans are designed to lock your interest rate before building begins. That rate is secured throughout the construction period and remains in effect for your permanent mortgage after the home is completed.
Q: What if interest rates drop during construction?
A: Once your rate is locked, it generally cannot be lowered unless your lender offers a one-time “float down” option. Contact GO Mortgage to learn about available rate lock policies.
Q: Are interest rates higher for construction loans?
A: Rates for one-time close construction loans may be slightly higher than purchase loans due to additional risk during the build phase. However, these rates are usually lower than if you locked a second time after building.
Q: How long is the rate lock period with a one-time close loan?
A: GoMortgage offers rate lock options that typically range from 90 to 360 days. This provides you with the flexibility to complete construction without worrying about market fluctuations.
Q: How soon can I get a Loan Estimate (LE) from GO Mortgage?
A: In most cases, GoMortgage provides a same-day Loan Estimate once your basic information and property plans are submitted. This helps you lock in your rate early and move forward more quickly.
Lock your rate early and build with confidence
In today’s housing market, locking your interest rate before construction gives you stability, predictability, and peace of mind. With a one-time close loan from GoMortgage, you don’t have to worry about rising rates, repeated paperwork, or refinancing delays.
GO Mortgage delivers:
- Prompt disclosures (Loan Estimate and Closing Disclosure)
- Fast loan approval timelines
- Competitive fixed rates for FHA, VA, and conventional loans
- Expert guidance from preapproval to permanent mortgage
Build your home at the rate you want. Get started today with GoMortgage to explore one-time close options and lock in your 2025 interest rate now.