Construction Loans: Financing New Home Builds

Construction loans provide short-term financing for the physical building of a residential property, covering land acquisition, materials, labor, and contractor fees during the construction phase. Unlike a standard purchase mortgage, these loans disburse funds incrementally as building milestones are met rather than in a single lump sum at closing. This page covers the core structure of construction loans, how draws and inspections work, the primary loan variants, and the conditions under which each type applies.

Definition and Scope

A construction loan is a short-term credit facility — typically 6 to 18 months in duration — used to fund the construction of a new residential structure. The Consumer Financial Protection Bureau (CFPB) distinguishes construction loans from permanent mortgages in its Truth in Lending Act (TILA) implementing regulations at 12 CFR Part 1026 (Regulation Z), which governs disclosure requirements specific to construction and construction-to-permanent transactions.

The loan amount is based on the projected value of the completed property — a figure known as the "as-completed" or "after-construction" appraised value — rather than the current value of a vacant lot. Lenders require a licensed general contractor with an approved project budget, a signed construction contract, and a detailed draw schedule before funding begins. The Federal Housing Administration (FHA), through its Title I and Title II programs, and the Department of Veterans Affairs (VA), through its VA construction loan guidelines, each publish program-specific parameters for government-backed construction financing.

How It Works

Construction lending operates through a structured disbursement process rather than a single transfer of funds. The sequence below reflects the standard process recognized across conventional and government-backed programs:

1. Application and qualification: The borrower applies with a licensed lender, submitting project plans, contractor credentials, estimated build cost, and a lot appraisal. The lender orders an "as-completed" appraisal based on architectural drawings and comparable sales. Underwriting evaluates the borrower's credit score and mortgage eligibility, the loan-to-value ratio against the projected finished value, and the debt-to-income ratio.

2. Loan commitment and closing: At closing, the full loan amount is committed but not disbursed. The borrower typically pays interest only on drawn funds, not on the total committed balance. This structure limits carrying costs during the build.

3. Draw schedule and inspections: Funds are released in scheduled draws — commonly 4 to 6 disbursements — tied to verified construction milestones such as foundation pour, framing completion, rough mechanicals, and final certificate of occupancy. Each draw requires a third-party inspector to confirm that the work claimed has been completed to specification before the lender releases the next tranche.

4. Construction completion and conversion or payoff: At the end of the construction phase, the borrower either pays off the construction loan entirely or converts it into a long-term mortgage loan, depending on the loan structure selected at origination.

Interest during the construction phase is typically calculated on the outstanding drawn balance. Fannie Mae's Selling Guide outlines the treatment of construction-to-permanent loans within its secondary market framework, including requirements for loan seasoning and conversion timelines.

Common Scenarios

Ground-up custom builds: A borrower purchases raw land and contracts a custom home builder. This is the most common scenario for standalone construction loans. The lender holds the lot as partial collateral during construction.

Tear-down and rebuild: An existing structure is demolished and replaced on the same lot. The existing property value informs the land collateral assessment, but lenders treat the project as a new construction underwrite.

Spec home financing: A builder — rather than a homebuyer — borrows to construct a home intended for sale to a third party upon completion. This typically falls under commercial or builder construction lines rather than consumer residential products.

New construction in a planned development: A buyer signs a purchase contract with a tract or production builder before construction begins. The builder typically carries its own construction financing; the buyer arranges permanent financing to close after the certificate of occupancy is issued. This scenario does not require the buyer to obtain a standalone construction loan.

Government-backed programs create additional access points. The FHA 203(k) renovation loan applies to rehabilitation of existing structures rather than new builds. For ground-up new construction with FHA backing, HUD's One-Time Close (OTC) program is the applicable vehicle, combining construction and permanent financing in a single closing.

Decision Boundaries

Selecting between construction loan types depends on cost tolerance, timeline certainty, and risk allocation.

Construction-only loan vs. construction-to-permanent loan: A construction-only loan closes once, funds the build, and then requires the borrower to obtain a separate permanent mortgage upon completion — resulting in two closings and two sets of closing costs. A construction-to-permanent loan (also called a "one-time close" or "OTC" loan) closes once, and the construction facility automatically converts to a long-term mortgage at a predetermined rate, eliminating the second closing and its associated costs.

The trade-off is rate lock flexibility. Construction-to-permanent loans lock the permanent rate at the first closing, which may be 12 or more months before occupancy. If market rates fall during construction, the borrower captures no benefit. Construction-only loans allow the borrower to shop for a new permanent rate at project completion but expose them to rate increases and qualification risk at that second underwriting.

Conventional vs. government-backed construction loans: Conventional construction loans follow Fannie Mae and Freddie Mac guidelines for the permanent phase and typically require a minimum 20% down payment to avoid private mortgage insurance at conversion. Government-backed products, including VA and FHA OTC loans, permit lower down payments — with VA loans allowing 0% for eligible veterans — but impose property standard requirements administered by HUD and the VA, respectively, which may affect construction specifications and inspector qualifications.

Portfolio construction loans: Some lenders hold construction loans on their own balance sheet rather than selling them into the secondary mortgage market. These portfolio loans can accommodate non-standard projects, self-builds with owner as general contractor, or unconventional property types that fall outside agency guidelines, though they typically carry higher rates and stricter reserve requirements.

Borrowers evaluating construction financing should also assess the overlap with renovation loans and bridge loans when the project involves existing structures or transitional financing between properties.

References

• Consumer Financial Protection Bureau — Regulation Z (12 CFR Part 1026)
• U.S. Department of Housing and Urban Development — Single Family Housing Programs
• U.S. Department of Veterans Affairs — Home Loans Program
• Fannie Mae Selling Guide — Construction-to-Permanent Financing
• HUD FHA 203(k) Rehabilitation Mortgage Insurance Program
• Freddie Mac — Single-Family Seller/Servicer Guide