Construction loans require more preparation than a standard purchase mortgage. Lenders are evaluating not just your creditworthiness but also the quality of your plans, the strength of your builder, the accuracy of your budget, and your ability to manage the build. Getting these elements right before you apply is the most effective way to move through underwriting without delays.
Your financing capacity determines your build budget. Before you sign with a builder or purchase a lot, get pre-qualified so you know exactly what you can borrow and what loan structure is available to you. This prevents the most common and expensive mistake in construction financing: committing to a project you cannot finance.
The appraiser values the finished home based on your plans and specifications. Incomplete plans produce an unreliable appraisal, which can delay closing or result in a loan amount that does not match your actual project. Invest in complete drawings and a detailed specification list before you submit your application.
Lenders vet builders separately from borrowers. Your builder will need to provide their contractor's license, general liability insurance, and workers' compensation coverage. Many lenders also review the builder's financial statements and track record. Confirm your builder is willing to go through this process before you commit.
The builder contract is the foundation of the loan. It needs to include the total price (or a guaranteed maximum for cost-plus), a list of what is included in the scope of work, and a draw schedule tied to construction milestones. A vague contract creates underwriting problems that slow down or kill the loan.
Construction loans typically require more reserves than purchase loans because the build takes months and unexpected costs arise. Lenders want to see that you can cover the interest-only payments during construction plus a cushion for surprises. Gather your bank statements, investment accounts, and retirement accounts before you apply.
W-2 income is the most straightforward to document. Self-employed income requires two years of tax returns and may be calculated differently than you expect. If your income is variable, bonus-heavy, or commission-based, talk to your lender early about how it will be treated in underwriting.
Construction loans generally require stronger credit than standard purchase loans. Review your credit report before applying and address any errors, collections, or late payments. Do not open new credit accounts or make large purchases in the months before you apply — changes to your credit profile during underwriting can delay or derail the loan.
New construction appraisals are based on plans and specifications, not a physical inspection of a completed home. The appraiser uses comparable sales of similar homes in the area to estimate what your home will be worth when it is finished. If comparable sales are limited or your home is significantly larger or more custom than nearby sales, the appraisal may come in below your budget — which affects the loan amount.
If you are purchasing a lot as part of the construction project, the lot acquisition needs to be factored into the total loan amount or funded separately. Some lenders will finance the lot and the construction in a single loan. Others require the lot to be purchased separately before the construction loan closes. Know which structure your lender uses before you make an offer on the land.
A two-close construction loan requires you to qualify twice — once for the construction loan and again for the permanent mortgage at the end of the build. If your financial situation changes during construction (job change, income fluctuation, new debt), the second qualification can become a problem. A single-close loan eliminates this risk by locking the permanent mortgage at the original closing.
Matt Siket
Mortgage Loan Originator, NMLS #442558 · Liberty Federal Credit Union, NMLS #518136
Last reviewed: July 2026
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Single-Close Construction Financing
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