Mortgage Payments
Calculating Interest During Construction
Easing the Financial Burden
One of the most attractive features of a construction loan is the payment structure during the build phase. Unlike a traditional mortgage where you begin paying back both the principal and interest from day one, most construction loans are "interest-only" during the construction period. This means you only pay interest on the money that has actually been disbursed to your builder, keeping your monthly costs significantly lower while you may still be paying for your current home.
How the Math Works
The interest is calculated based on the outstanding balance of your loan. For example, if you have a $1 million loan but only $100,000 has been disbursed for the foundation and initial materials, you only pay interest on that $100,000. As more draws are taken and the balance grows, your monthly interest payment will gradually increase. This "pay-as-you-go" system ensures you aren't paying for money that isn't yet being used.
The Rate Lock Advantage
With a Texas One-Time Close Loan, your interest rate is locked in before construction even begins. This provides immense peace of mind. If interest rates rise while your home is being built, your payment remains based on the lower rate you secured at the start. You don't have to worry about a sudden spike in rates making your permanent mortgage unaffordable by the time you're ready to move in.
Transitioning to Full Payments
Once construction is complete and you receive your Certificate of Occupancy, the interest-only period ends. Your loan automatically converts to a standard amortizing mortgage, and you begin making full principal and interest payments. Because you chose the Texas One-Time Close option, this transition is seamless and requires no additional paperwork or closing costs.
Conclusion
The interest-only structure during construction is a powerful financial tool that makes building a custom home more affordable and less stressful. By only paying for what you use and locking in your rate upfront, you can focus on the exciting process of creating your dream home. Contact me today to see how we can structure the perfect construction loan for your needs.
` }, { slug: "lot-and-land-financing-strategies", title: "Lot and Land Financing Strategies", category: "Lot & Land", date: "July 2026", readTime: "5 min read", content: `Paying for Your Loan While You Build
One of the most unique aspects of a construction loan is how you make payments during the building phase. Unlike a traditional mortgage where you pay principal and interest from day one, most construction loans are "interest-only" during the construction period. This means you only pay interest on the funds that have actually been disbursed to your builder, making the payments more affordable while you may still be paying for your current residence.
The "Pay-As-You-Go" Model
Imagine you have a $1 million construction loan. On day one, only $200,000 has been disbursed to pay for the land. Your first monthly interest payment will be calculated only on that $200,000. As construction progresses and more draws are taken—say, another $100,000 for the foundation—your next payment will be calculated on $300,000. Your payments start small and gradually increase as the home nears completion.
The Interest Rate
In a Texas One-Time Close Loan, the interest rate you pay during construction is typically the same as your permanent mortgage rate. This provides a high level of predictability, as you know exactly what your maximum interest-only payment will be once the home is finished but before it converts to a permanent loan.
The Conversion to Permanent Financing
Once the home is finished and the final draw is taken, the "construction phase" ends. At this point, the loan automatically converts to a permanent mortgage. Your monthly payments will then include both principal and interest, calculated over the remaining term of your loan (usually 30 years). Because you chose a One-Time Close loan, this transition happens seamlessly without the need for a second closing.
Conclusion
The interest-only feature of construction loans is a powerful tool that makes building a custom home more financially accessible. It allows you to manage your cash flow effectively during the most intensive part of the project. If you have questions about how your specific payments will be calculated, I am here to provide a detailed projection based on your project's budget. Contact me today to learn more.

Darren Davey
A luxury mortgage expert with 26 years of experience, specializing in One-Time Close construction loans and jumbo mortgages. Darren proudly serves high-value Texas markets including Dallas, Highland Park, University Park, Lakewood, Southlake, Westlake, Prosper, Celina, and McKinney, as well as Austin, San Antonio, the Hill Country, Houston, and luxury lake properties.