Building a home or adding a major addition means you need money flowing before anything is built. A construction to permanent loan solves that problem. It funds the build first, then converts into a regular mortgage once construction wraps up. You go through one approval process and one closing instead of two separate loans.

Most homeowners don’t realize that lenders treat construction financing completely differently from a standard home purchase loan. The property doesn’t exist yet, so the underwriting, disbursement, and risk model all work differently. Understanding this process upfront can save you thousands in fees and prevent costly delays on your project.

Key Takeaways

• One loan, one closing: Construction to permanent loans combine the build phase and the mortgage into a single product, eliminating a second closing and a second set of fees.
• Funds come in draws, not a lump sum: Lenders release money in stages tied to completed construction milestones, not all at once.
• You typically pay interest only during construction: Full principal and interest payments begin after the loan converts to a permanent mortgage.
• The lender controls appraisal before a shovel hits the ground: Approval is based on the projected completed value of your home, which a lender-ordered appraisal determines.
• Builder approval is part of your loan approval: Your general contractor must meet lender qualifications before you get funded.
• Typical construction periods run 9 to 18 months: Extensions are possible but may require lender approval and additional fees.

What Is a Construction to Permanent Loan?

Quick Answer: A construction to permanent loan funds your home build in draw-based installments, then automatically converts into a standard mortgage at project completion. You apply once, close once, and pay two sets of costs instead of the three you’d pay with separate construction and mortgage loans.

Think of it as a two-phase product that works like one. Phase one is the construction loan. During this phase, your lender releases funds to your builder at scheduled milestones. You pay interest only on the amount drawn so far, not the full loan balance. Phase two is the permanent mortgage. Once your local municipality issues a certificate of occupancy, the loan converts. Your regular monthly principal and interest payments begin.

The alternative is a two-close loan. You’d take out a standalone construction loan, then refinance it into a mortgage when the build is done. That means two applications, two appraisals, two closings, and two sets of closing costs. Most homeowners building new or doing major additions prefer the single-close structure for that reason.

How Does This Loan Differ From a Standard Mortgage?

A standard mortgage funds a finished property. The lender knows exactly what they’re lending against. A construction loan funds a project in progress, which carries more risk. Lenders respond to that risk with tighter controls: builder vetting, draw inspections, and shorter initial loan terms.

Because the collateral (your home) doesn’t fully exist during construction, lenders also tend to require larger down payments and stronger credit profiles than they would for a standard purchase loan.

How Does the Draw Schedule Work?

Quick Answer: A draw schedule is a lender-approved payment plan that releases construction funds in 4 to 6 stages tied to verified build milestones. Each draw requires an inspection confirming work is complete before the next payment is released to your builder.

The draw schedule is the operational core of a construction loan. Your lender won’t hand your builder the full loan amount upfront. Instead, they divide it into draws, each tied to a specific phase of construction. Common draw triggers include foundation completion, framing completion, rough-in of mechanical systems (plumbing, electrical, HVAC), drywall and insulation, and final completion with occupancy approval.

What Happens at Each Draw Inspection?

Before releasing each draw, the lender sends an inspector (sometimes called a draw inspector or construction inspector) to verify that the work tied to that payment is actually done. If the inspection passes, the lender releases the funds. If there are deficiencies, the draw is held until corrections are made.

This protects both you and the lender. You’re not paying for work that hasn’t happened, and the lender isn’t funding a project that’s stalling out. Most draw inspections cost between $100 and $200 per visit, and that cost is typically built into your loan fees.

Typical Construction Loan Draw Schedule

Draw Number	Milestone	Typical % of Loan Released	Inspection Required
Draw 1	Site prep and foundation complete	10–15%	Yes
Draw 2	Framing and roof sheathing complete	20–25%	Yes
Draw 3	Rough-in plumbing, electrical, HVAC	15–20%	Yes
Draw 4	Insulation and drywall hung	15–20%	Yes
Draw 5	Interior finishes and fixtures installed	15–20%	Yes
Draw 6 (Final)	Certificate of occupancy issued	10–15%	Yes

What Are the Lender Requirements to Qualify?

Quick Answer: To qualify for a construction to permanent loan, you typically need a credit score of 680 or higher, a down payment of 20–25%, a debt-to-income ratio below 45%, full project plans, a signed contract with an approved builder, and a lender-ordered appraisal of the projected completed value.

Construction loan qualification is more demanding than a standard mortgage. That’s because lenders are taking on more risk. They’re lending against a property that doesn’t exist yet, with a builder they need to trust, over a timeline that can shift. To offset that risk, they tighten the qualification criteria.

Credit Score and Debt-to-Income Requirements

Most lenders require a minimum credit score of 680 for conventional construction to permanent loans. Some portfolio lenders (banks that keep loans on their own books instead of selling them) may go as low as 640, but you’ll pay a higher interest rate. FHA construction loans allow scores as low as 580 with a 3.5% down payment, but not all lenders offer FHA construction products.

Your debt-to-income ratio (DTI) compares your monthly debt payments to your gross monthly income. Most lenders cap DTI at 43–45% for construction loans. To calculate yours, add up all monthly debt payments, then divide by your gross monthly income.

Down Payment Requirements by Loan Type

Loan Type	Minimum Down Payment	Minimum Credit Score	Loan Limit (2025)	Builder Approval Required
Conventional (Fannie/Freddie)	20–25%	680	$806,500 (standard)	Yes
FHA One-Time Close	3.5%	580	$498,257–$1,149,825	Yes
VA One-Time Close	0%	620 (lender varies)	No set limit	Yes
USDA Construction Loan	0%	640	Based on area median income	Yes
Jumbo Construction Loan	20–30%	720	Above $806,500	Yes

What Documentation Do Lenders Require?

Beyond the standard income and asset documents you’d provide for any mortgage, construction loans require a full set of project documents. Missing any of these will delay or derail your approval.

• Signed contract with your general contractor
• Detailed construction plans and specifications
• Itemized cost breakdown for the full project
• Proof your builder is licensed, bonded, and insured
• Builder’s financial statements (for some lenders)
• Land purchase documentation or proof of land ownership
• Building permits (or evidence of pending permits)
• Survey of the property

How Does Builder Approval Work With Lenders?

Quick Answer: Lenders vet your general contractor before approving your loan. They verify the contractor’s license, insurance coverage, financial stability, and track record of completed projects. A contractor who doesn’t meet lender standards can block your approval, so check builder eligibility early.

Your builder is part of your loan. That might feel strange, but it makes sense from the lender’s perspective. If your contractor abandons the project or goes bankrupt mid-build, the lender is stuck with a partially built home as collateral. They protect themselves by requiring that builders meet specific standards before any funds are released.

Builder Eligibility Checklist for Construction Loan Approval

• Active state contractor’s license in good standing
• General liability insurance with a minimum of $1 million per occurrence
• Workers’ compensation insurance covering all employees on site
• Verifiable project history of successfully completed residential builds
• No active judgments, liens, or bankruptcy filings against the contractor
• Financial solvency (some lenders request tax returns or bank statements)

If you’ve already hired a contractor who doesn’t meet these requirements, you have two options: find a new contractor or work with a lender that has less stringent builder requirements (typically portfolio lenders or credit unions). Going the portfolio lender route often means a higher interest rate.

What Interest Rate Should You Expect on a Construction Loan?

Quick Answer: Construction loan interest rates typically run 0.5 to 1.5 percentage points higher than conventional 30-year mortgage rates. The rate is usually variable during construction, then converts to a fixed rate when the permanent mortgage phase begins at your original locked rate.

The higher rate during construction reflects the higher lender risk. You’re paying interest only on drawn amounts during the build phase, so even though the rate is higher, your actual monthly interest payments are lower than you might expect, especially early in the project when only a fraction of the total loan has been disbursed.

Construction Loan Cost Comparison

Cost Component	Typical Range	Notes
Construction phase interest rate	Prime + 1–2% (variable)	Applied only to drawn balance
Permanent mortgage rate	Locked at origination	Based on market rates at closing
Origination fee	1–2% of loan amount	One-time fee at closing
Draw inspection fees	$100–$200 per inspection	Typically 4–6 inspections
Appraisal fee	$500–$1,500	Based on plans, not existing structure
Title insurance	0.5–1% of loan amount	Protects lender during construction
Construction period	9–18 months	Extensions may incur fees

How Does the Loan Conversion Process Work?

Quick Answer: When construction ends and your municipality issues a certificate of occupancy, the lender converts your construction loan into a permanent mortgage. No new appraisal is needed. Your rate, term, and monthly payment were set at the original closing and take effect automatically at conversion.

The conversion is mostly administrative, which is the entire point of a single-close loan. Your lender transitions the loan from the interest-only construction phase to the full amortizing mortgage phase. You receive new payment disclosures showing your principal and interest payment schedule.

What Triggers the Conversion?

Three things must happen before conversion occurs:

1. Certificate of occupancy (CO): Your local building authority issues this after a final inspection confirms the structure is safe and code-compliant.
2. Final draw release: The lender’s draw inspector verifies all work is complete and the final disbursement is approved.
3. Lender’s modification agreement: You sign a loan modification document confirming the permanent mortgage terms are now active.

If your construction period runs long and you haven’t hit these triggers by the loan’s expiration date, you’ll need to request an extension. Most lenders allow one or two extensions of 3 to 6 months each, but they charge an extension fee, typically $500 to $2,000, and some will re-evaluate your qualifications before granting one.

What Happens to Your Interest Rate at Conversion?

This is where the single-close structure really pays off. Your permanent mortgage rate was locked when you originally closed on the construction loan. Even if rates rise significantly during your 12-month build, your rate doesn’t move. That rate lock gives you cost certainty in a market where construction timelines can slip.

Can You Use a Construction to Permanent Loan for a Home Addition?

Quick Answer: Yes. Construction to permanent loans work for major home additions, not just new builds. The lender appraises the completed value of your home with the addition included. You must own the land (your existing home), have sufficient equity, and meet the same builder and documentation requirements as a new construction loan.

Financing a home addition with this type of loan is more complex than financing a new build because you’re adding to an existing structure. The lender has to appraise both what exists now and what will exist after construction. That dual valuation adds a layer of complexity to the underwriting process.

Addition Loan vs. New Build Loan: Key Differences

Factor	New Construction	Home Addition
Existing equity	Not applicable (land only)	Required; lender calculates combined LTV
Appraisal type	Subject-to appraisal based on plans	As-improved appraisal (existing + addition)
Loan structure	Full loan amount funded via draws	Draw funds cover addition cost only
Existing mortgage	None	Must be paid off or refinanced into new loan
Minimum project size	Typically $100,000+	Most lenders require $50,000–$100,000 minimum

If your existing mortgage balance is high relative to your home’s current value, the addition loan may not provide enough room to finance the project at a workable loan-to-value ratio. In that case, alternatives like a home equity line of credit or a cash-out refinance may work better for smaller addition projects.

What Are Common Mistakes That Delay or Derail Construction Loans?

Quick Answer: The most common construction loan killers are incomplete project documentation, choosing a contractor who hasn’t been lender-approved, underestimating total project costs, missing draw inspection windows, and letting the construction period expire before the build is done.

Incomplete or Inaccurate Project Cost Estimates

Lenders need a complete, itemized cost breakdown before they’ll approve your loan. If you underestimate costs and run out of loan funds mid-project, the lender won’t simply give you more money. You’ll need to cover overruns out of pocket or find a secondary financing source. This is why most financial professionals recommend building a 10–15% contingency buffer into your construction budget from day one.

Changes to the Scope of Work During Construction

Every change to the original plans can trigger a lender review. Major scope changes sometimes require a loan modification, which takes time and can affect your draw schedule. Agree on your full design before closing the loan. Changes during construction are expensive in both cost and time.

Builder Delays and Construction Timeline Overruns

Construction loans have an end date. If your builder misses milestones and pushes the project past the loan’s construction period, you’ll need an extension. Extensions cost money and are not guaranteed. Before choosing a builder, ask for their average project completion rate relative to original timelines. A contractor with a history of delays is a direct risk to your loan.

How Do You Compare Lenders for a Construction to Permanent Loan?

Quick Answer: Compare lenders on five factors: interest rate lock terms, total fees and origination costs, builder approval flexibility, draw schedule structure, and their experience with construction loans specifically. Lenders who specialize in construction lending process draws faster and create fewer project delays.

Questions to Ask Every Lender Before Applying

• Do you offer a single-close construction to permanent product?
• How long is the rate lock for the permanent mortgage phase?
• What is your typical draw processing time once inspection passes?
• How many construction loans do you close per year?
• What are your builder approval requirements?
• What happens if construction runs over the scheduled completion date?
• Are there any prepayment penalties on the permanent mortgage?

Draw processing speed matters more than most borrowers realize. A lender who takes two to three weeks to process a draw after a passed inspection can create cash flow problems for your builder. Slow draws slow construction. Look for lenders with a 5 to 10 business day draw turnaround.

What Is the Step-by-Step Process for Getting a Construction to Permanent Loan?

Quick Answer: The process runs from builder selection and design finalization through lender application, project appraisal, underwriting, closing, construction draws, final inspection, and loan conversion. Plan for 60 to 90 days from application to closing, followed by your full construction timeline.

Step 1: Finalize Plans and Select a Builder

You cannot apply for a construction loan without a complete set of construction plans, a signed builder contract, and a full project cost breakdown. Lenders won’t underwrite an incomplete application. Get your plans stamped by an architect or engineer if your local jurisdiction requires it, and confirm your builder meets the lender’s approval criteria before signing anything.

Step 2: Submit Your Loan Application

Apply with full documentation: income, assets, credit, plans, contractor credentials, and cost breakdown. The lender will pull your credit, verify your DTI, and order an appraisal based on your plans. Processing typically takes 45 to 75 days from application to closing.

Step 3: Appraisal and Underwriting

Your lender orders a subject-to appraisal. This means the appraiser evaluates your property and plans together to estimate what the finished home or addition will be worth. The appraisal drives your maximum loan amount. If it comes in low, your loan amount drops and you may need a larger down payment.

Step 4: Closing

At closing, you sign the loan documents for both phases: construction and permanent. You pay closing costs at this point. Construction typically cannot begin until closing is complete and the lender funds the initial draw or establishes the draw line.

Step 5: Construction and Draw Management

Your builder submits draw requests at each milestone. The lender orders inspections and releases funds. Stay in close communication with your builder and lender during this phase. Missed draw requests or inspection scheduling delays slow the entire project.

Step 6: Final Inspection and Conversion

Once your CO is issued and the final draw is approved, the lender processes the conversion to your permanent mortgage. You begin making standard principal and interest payments on the schedule defined in your original loan documents.

Frequently Asked Questions

Can you lock a mortgage rate for a construction loan before you start building?

Yes. With a single-close construction to permanent loan, your permanent mortgage rate locks at the original closing, before construction begins. This protects you from rate increases during the build. Rate lock periods for construction loans typically run 12 to 24 months to cover the full construction timeline.

What happens if the construction appraisal comes in below the project cost?

If the as-completed appraisal is lower than your total project cost, the lender will cap the loan at a percentage of the appraised value. You’ll need to cover the gap with cash, reduce the project scope, or find a different lender with a higher loan-to-value limit. This is why accurate cost estimation matters before you apply.

Do you make payments during the construction phase?

Yes, but they’re interest-only payments. You pay interest on the funds that have been drawn so far, not on the full loan amount. These payments are typically much lower than your eventual principal and interest mortgage payment. Full payments begin after the loan converts at project completion.

Can you act as your own general contractor to get a construction loan?

Most lenders do not allow owner-builders on construction to permanent loans. They require a licensed general contractor to manage the project. A small number of portfolio lenders and credit unions do offer owner-builder programs, but these usually come with higher down payment requirements (30–40%) and stricter financial qualifications.

What is an as-improved appraisal for a home addition?

An as-improved appraisal estimates what your property will be worth after the addition is complete. The appraiser reviews your existing home, your construction plans, and comparable sales in your area that include similar features. This projected value becomes the basis for your maximum loan amount on an addition project.

What is the difference between a construction to permanent loan and a home construction line of credit?

A construction to permanent loan is a term loan that converts to a mortgage. A home construction line of credit (sometimes called a construction HELOC) is a revolving credit line secured by your home’s equity. The line of credit is more flexible but doesn’t automatically convert to a fixed mortgage, and it typically requires more existing equity to qualify.