1. Enter the Loan Amount

Users should input the total amount they plan to finance.

• Pro Tip: Remind users to include both the cost of the modular home package and estimated site work (foundation, utilities, permits) for a more accurate monthly estimate.

2. Set the Interest Rate

Adjust the slider or type in the current annual percentage rate (APR).

• Note: Since interest rates for construction-to-permanent loans can fluctuate, users should check with a lender for a “ballpark” rate based on their credit score.

3. Select the Loan Term

Choose the duration of the mortgage from the dropdown menu (e.g., 60 months for short-term financing or 360 months for a standard 30-year mortgage).

• Current Fix: I noticed your calculator currently defaults to “months” (like an auto loan). For home buyers, it’s helpful to clarify that 360 months = 30 years and 180 months = 15 years.

4. View the Monthly Payment

The blue “Monthly Payment” box on the right updates automatically to show the estimated principal and interest.

• Missing Data Alert: It is important to note for your users that this figure typically does not include property taxes or homeowners insurance, which are usually handled via an escrow account in New York.

No, the calculator does not automatically include land costs unless you manually add them to the “Loan Amount” field.

Because modular homes are built to the same local and state building codes as traditional site-built homes, they qualify for the same competitive financing. Generally, modular home interest rates track closely with standard 15- and 30-year fixed mortgage rates.