MortgagesC2PLetter C

Construction-to-Permanent Loan (Single-Close)

A unified mortgage facility that finances land acquisition and ground-up home construction via staged builder draws, then automatically converts into a long-term permanent mortgage upon completion.

Overview & Practical Application

A Construction-to-Permanent (C2P) Loan — often called a Single-Close Construction Loan — combines short-term ground-up construction financing and a long-term 15- or 30-year residential mortgage into a single closing transaction.

The loan operates across two distinct lifecycle phases: 1. Construction Draw Phase (Typically 6–12 Months): Instead of disbursing the entire loan at closing, the lender holds funds in a construction reserve and releases staged Construction Draws as the licensed general contractor completes verified building milestones (foundation, framing, mechanicals, drywall, final certificate of occupancy). During this phase, the borrower makes interest-only payments strictly on the cumulative dollar amount drawn to date. 2. Permanent Amortizing Phase: Once the local municipality issues the final Certificate of Occupancy (CO) and final inspection is signed off, the loan automatically modifies into a standard permanent amortizing mortgage without requiring a second closing or re-underwriting.

Mathematical Formula & Calculation

Monthly Construction Draw Interest = Cumulative Disbursed Draw Balance * (Annual Construction Rate / 12)

Calculates the monthly interest-only payment during the build phase based solely on funds disbursed to the builder so far.

Variable Definitions:

  • Cumulative Disbursed Draw Balance=Sum of land payoff and completed builder stage draws to date
  • Annual Construction Rate=Contracted construction phase note rate

Real-World Underwriting Example

Scenario: On a $500,000 construction loan at 7.00%, Month 4 cumulative draws for land and foundation total $180,000.

Calculation:
Month 4 Interest-Only Payment = $180,000 * (0.07 / 12) = $1,050.00.

Takeaway: The borrower pays only $1,050.00 in Month 4 rather than paying interest on the full $500,000 commitment.

Key Underwriting Takeaways

  • A Single-Close C2P loan saves thousands in duplicate title insurance, recording taxes, and origination fees compared to a Two-Close construction loan.
  • Requires lender approval of the licensed general contractor, detailed architectural blueprints, line-item cost breakdown, and an "As-Completed" appraisal.
  • Usually includes a 10% contingency reserve built into the budget to cover unexpected material or labor cost overruns.

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