Construction Loan Guide: How Do Construction Loans Work
Updated 2026-09-05 · By Michael Chen, CPA
Learn how construction loans work, including draw schedules, interest rates, and borrower qualifications. Get the facts to decide if this loan fits your project.
A construction loan is a short-term, variable-rate loan used to finance the building of a home or other real estate project. Instead of receiving the full loan amount upfront, the borrower draws funds in stages as construction progresses. This type of loan typically has a higher interest rate than a traditional mortgage because the lender assumes more risk during the building phase. The loan term generally lasts 12 to 18 months, after which the borrower must either pay off the balance or convert the loan into a permanent mortgage. This guide explains the core mechanics of how construction loans work, so you can evaluate whether this financing path aligns with your project.
How Construction Loan Draws Work
Unlike a standard mortgage where the lender provides a lump sum at closing, a construction loan distributes money in a series of scheduled payments called draws. Each draw corresponds to a completed stage of construction. A typical draw schedule might include:
- Foundation draw: Funds released after the slab or basement is poured and cured.
- Framing draw: Paid when the structural frame, roof, and windows are in place.
- Rough-in draw: Covers plumbing, electrical wiring, and HVAC installation.
- Interior finish draw: Released after drywall, flooring, cabinets, and fixtures are installed.
- Final draw: Disbursed upon completion of the project, including final inspections.
Before each draw, the lender sends an inspector or appraiser to verify that the work has been completed to code and according to plan. This protects both the borrower and the lender. Your monthly payment during construction is typically interest-only on the amount drawn so far, not on the full loan balance. Once construction finishes, many borrowers transition to a permanent mortgage through a process called a construction-to-permanent loan.
Key Factors Affecting Borrower Qualification
Lenders evaluate construction loan applications differently than standard mortgages. Because there is no finished home serving as immediate collateral, the underwriting criteria are stricter. General factors include a credit score typically at 680 or higher, a low debt-to-income ratio, and sufficient cash reserves to cover cost overruns. You will also need a detailed construction plan, a timeline, and a builder contract. The lender assesses the builder’s experience and licensing. The property itself must have clear title and a realistic appraised value based on the completed home. Borrowers should expect a larger down payment than with a conventional purchase loan, often 20% or more, depending on the lender and the borrower’s financial profile.
Construction Loan vs. Construction-to-Permanent Loan
Borrowers must choose between two primary structures: a stand-alone construction loan or a construction-to-permanent loan. The table below summarizes the differences:
| Feature | Stand-Alone Construction Loan | Construction-to-Permanent Loan |
|---|---|---|
| Closing process | Two separate closings (construction + permanent mortgage) | One closing, one set of fees |
| Interest rate during build | Variable, often higher | Locked rate or adjustable, depending on terms |
| Monthly payment during build | Interest-only on funds drawn | Interest-only on funds drawn |
| Conversion to permanent loan | Requires a second application and underwriting | Automatic conversion, no new credit check if terms met |
| Total cost | Potentially higher due to duplicate closing fees | Lower overall fees because of single closing |
Your choice depends on your financial situation and timeline. A construction-to-permanent loan offers simplicity and cost savings, while a stand-alone construction loan may work if you plan to sell the property after completion or have strong credit to secure favorable permanent financing later.
Common Risks and Borrower Considerations
Construction loans carry unique risks. The variable interest rate means your monthly payment can increase if market rates rise. Delays in construction, weather issues, or material shortages can extend the loan term and increase interest costs. Some borrowers face difficulty qualifying for permanent financing after construction if their credit or income changes. To mitigate these risks, work with experienced builders, budget a contingency of at least 10% of the construction cost, and lock your permanent mortgage rate as early as possible if using a construction-to-permanent loan. Always read the loan agreement carefully and ask your lender to explain every fee, including draw inspections, document preparation, and extension charges.
Ready to Find Your Loan?
Apply now to compare personalized offers from top lenders. No impact to your credit score.
Compare Rates