Calculator
Category: Cat Calculators
Example Data Table
| Input | Example Value | Purpose |
|---|---|---|
| Hard Construction Cost | $250,000 | Main build budget |
| Soft Costs | $35,000 | Permits, design, surveys, and fees |
| Land Value | $80,000 | Site value included in project cost |
| Completed Value | $430,000 | Estimated value after construction |
| Max DTI | 43% | Income qualification limit |
| Max LTC | 80% | Loan limit against total cost |
| Max LTV | 75% | Loan limit against completed value |
Formula Used
Base project cost = hard cost + soft cost + land value.
Contingency = hard cost × contingency rate.
Closing cost = cost before closing × closing cost rate.
Total project cost = base project cost + contingency + closing cost.
Requested loan = entered loan amount, or total project cost minus cash equity.
Interest only payment = requested loan × monthly interest rate.
DTI capacity = gross monthly income × maximum DTI minus current monthly debt.
DTI loan cap = DTI capacity ÷ monthly interest rate.
LTC cap = total project cost × maximum LTC.
LTV cap = completed value × maximum LTV.
Prequalified amount = minimum of DTI loan cap, LTC cap, and LTV cap.
How To Use This Calculator
Enter the full construction budget first. Include hard costs, soft costs, land value, contingency, and closing costs.
Add your income, debts, available equity, reserves, credit score, and lender limits.
Enter the requested loan amount. Use zero when you want the calculator to estimate it automatically.
Press Calculate to view the result above the form. Use CSV or PDF buttons to save your report.
Review the gaps. Lower the requested loan, add equity, or adjust the budget when the result is weak.
Construction Loan Prequalification Guide
Planning The Loan
Construction loan prequalification is a planning step. It helps you check borrowing strength before formal underwriting begins. A builder, lender, or owner can compare project cost, income, debts, equity, and collateral value in one view.
Why Prequalification Matters
Construction loans are different from standard home loans. The lender studies the finished value and the cost to build. It also checks whether the borrower can carry interest payments during construction. A strong file usually shows enough cash, a realistic budget, good reserves, and a sound exit plan.
Key Inputs To Review
Start with the hard construction cost. Add soft costs, land value, contingency, and closing costs. This gives the estimated total project cost. Then compare the requested loan with lender limits. Loan to cost looks at the build budget. Loan to value compares the loan with the expected completed value.
Income and Debt Checks
Monthly income matters because the lender needs payment capacity. Existing debt reduces that capacity. The calculator estimates an interest only payment for the construction period. It then tests the new payment against a maximum debt to income limit. This is only an estimate. Actual lenders may also include taxes, insurance, leases, and other obligations.
Equity and Reserve Strength
Equity is cash or land value that supports the project. More equity can reduce risk. Reserves are also important. They help cover payment shocks, draw delays, cost overruns, and permit issues. Many borrowers fail prequalification because they focus only on income and ignore liquidity.
Using The Result Wisely
A likely prequalified result does not guarantee approval. It means the selected assumptions pass the model. A borderline result means one or two limits may be tight. A needs improvement result shows where to adjust. You may lower the loan request, add cash, reduce costs, improve credit, or increase reserves.
Good construction planning should be conservative. Costs can change fast. Draw schedules can shift. Contractors may revise bids. Use this calculator early, then update it when bids, appraisals, and lender terms become clearer. The best result is not only a larger loan. It is a loan size that keeps the project stable. Review each change carefully. Small inputs can move the answer. Keep lender documents ready before applying with care today.
FAQs
What is a construction loan prequalification calculator?
It estimates whether a borrower may fit basic construction loan rules. It compares project cost, completed value, income, debt, credit score, equity, reserves, and lender limits.
Does this calculator guarantee loan approval?
No. It is only an estimate. Actual approval depends on lender underwriting, appraisal, contractor review, draw schedule, permits, documentation, and credit verification.
What is loan to cost?
Loan to cost compares the loan amount with the full project cost. It helps lenders decide how much of the build budget they may finance.
What is loan to value?
Loan to value compares the loan amount with the expected completed property value. A lower value can reduce the maximum eligible loan amount.
Why does debt to income matter?
Debt to income shows how much income is already used by debt payments. Higher debt can lower the estimated loan amount, even with strong collateral.
Why are cash reserves included?
Reserves help cover interest payments, delays, overruns, and unexpected costs. Lenders often prefer borrowers with enough liquid cash after closing.
Should land value be included?
Yes, if the land supports the project and the lender accepts it. Land value can affect total cost, equity, and collateral calculations.
What can improve my result?
You can add equity, reduce project cost, request a smaller loan, lower existing debt, improve credit, increase reserves, or use stronger verified income.