You have the land. You have a builder contract. You have a floor plan you’ve been tweaking for months. What you don’t have yet is the financing — and that’s where most borrowers discover that construction loan financing operates by a completely different set of rules than a standard home purchase mortgage.
Unlike a conventional mortgage where funds transfer at closing and you start paying principal and interest on a fixed balance, a construction loan releases money in stages, charges interest only on what’s been drawn, and ultimately converts — or doesn’t — into a permanent mortgage based on a home that doesn’t exist yet. The appraisal is hypothetical. The rate risk is real. And the decisions you make at origination can follow you for 30 years.
There are two distinct financing phases to understand: the construction phase, where you’re drawing funds as work progresses and paying interest-only on the outstanding balance, and the permanent phase, where the loan converts to a traditional mortgage and Loan-Level Price Adjustments (LLPAs) get calculated based on your credit score and the home’s as-completed value. Most borrowers focus on the second phase. The smart ones pay equal attention to both.
This article walks through how draw schedules actually work, how LLPAs affect your permanent rate, the real dollar cost of a 0.25% rate difference on a $400,000 loan, and why accessing multiple wholesale lenders through a broker can materially change what you pay. By the end, you’ll have the framework to evaluate any construction loan offer with precision — not guesswork.
By Duane Buziak, NMLS #1110647, Coast2Coast Mortgage LLC NMLS #376205
Two Loans or One? The Structural Choice That Shapes Everything
The first decision in construction loan financing isn’t about rate. It’s about structure. And that structural choice will determine your flexibility, your closing costs, and your exposure to rate risk during the build.
The two primary structures are the two-close loan and the one-close (construction-to-permanent) loan. Understanding the difference is non-negotiable before you sign anything.
Two-Close Structure: You originate a standalone construction loan — typically interest-only, with a variable rate tied to prime or SOFR — to fund the build. At completion, you close on a separate permanent mortgage. You qualify twice, pay two sets of closing costs, but retain the ability to re-shop the permanent loan at conversion. If rates drop during your build, you benefit. If they rise, you absorb that risk.
One-Close (Construction-to-Permanent) Structure: A single loan covers both phases. The permanent rate is locked at origination or at a defined conversion point — the specific mechanic varies by lender program and must be confirmed in your loan documents. You qualify once, pay one set of closing costs, and avoid the uncertainty of re-qualifying at conversion. The tradeoff: if rates fall significantly during construction, you’re locked into the original terms.
Neither structure is universally superior. The right choice depends on your rate outlook, your risk tolerance, and how long your build is projected to take.
Now, the mechanics that apply to both: the draw schedule.
Funds in a construction loan are not disbursed as a lump sum. They’re released in stages — typically four to six disbursement milestones — after an inspector signs off on completed work. Common draw stages include foundation pour, framing completion, rough-in (plumbing, electrical, HVAC), drywall and insulation, and final completion. Each draw requires documented progress and third-party inspection before the next tranche is released.
Here’s the financial mechanic that surprises most borrowers: you pay interest only on the cumulative drawn balance during construction, not on the full approved loan amount. If your construction loan is approved for $450,000 but only $180,000 has been drawn after the framing stage, your interest accrues on $180,000 — not $450,000. This distinction matters significantly when modeling your total carrying cost during the build phase.
Underwriting for construction loans also differs from a standard purchase mortgage in important ways. The lender evaluates the builder’s license and track record, the executed construction contract, and an appraiser’s “as-completed” value — a hypothetical appraisal based on plans, specifications, and comparable completed homes in the area. That as-completed value — not the current lot value — drives the LTV calculation used when LLPAs are applied to the permanent loan. According to Fannie Mae Selling Guide B5-3.1, construction-to-permanent loans that conform to agency guidelines are eligible for standard LLPA treatment at the permanent stage — which means your credit score at conversion and your as-completed LTV both feed directly into your final rate.
LLPAs, Rate Locks, and the Hidden Cost of Building-Phase Risk
Rate risk in construction loan financing isn’t theoretical. A 9-to-12-month build timeline is a long time to be exposed to market movement, and the mechanics of how your permanent rate gets set deserve more attention than most borrowers give them.
Start with LLPAs. Loan-Level Price Adjustments are pricing add-ons applied to the permanent loan based on specific risk factors. Fannie Mae’s LLPA Matrix assigns pricing adjustments based on credit score bands and LTV ranges. A borrower at 680 FICO versus 720 FICO can face materially different adjustments on the same loan amount. In a construction-to-permanent scenario, the LTV is calculated against the as-completed appraisal — so if your build comes in under budget and the as-completed value is strong, your LTV improves and your LLPA exposure decreases. The inverse is also true.
This is why the as-completed appraisal isn’t just a formality. It’s a pricing input that directly affects what you pay for the next 30 years. Understanding how loan-to-value ratio works in this context is essential before you commit to any construction financing structure.
Now, the APR vs. note rate distinction. In a construction-to-permanent loan, the interest-only payments you make during the construction phase are not captured in the standard APR calculation for the permanent loan. When you compare APRs across lenders on a construction-to-permanent product, you may be comparing figures that reflect different cost bases. Ask each lender specifically what is and isn’t included in their APR calculation. The CFPB’s Loan Estimate guidance provides the framework for what must be disclosed — but the construction-phase interest is a separate line item, not embedded in the permanent loan APR.
Extended rate locks are the mechanism most lenders use to address build-phase rate risk on one-close loans. Some wholesale lenders offer 12-to-18-month rate locks for construction-to-permanent products. These locks carry a fee — sometimes expressed as a percentage of the loan amount, sometimes as a flat charge — and that fee is a real cost that must be factored into your analysis.
Here’s the framing that matters: the lock fee is a known, upfront cost. The rate risk it hedges is an unknown, potentially much larger cost. A 0.50% rate increase on a $400,000 permanent loan adds roughly $134 per month to your payment — more than $48,000 over a 30-year term. Evaluated against a lock fee of, say, $3,000 to $5,000, the math often favors locking, particularly on longer builds.
The complication is that not all lenders offer extended locks, and those that do price them differently. This is precisely where accessing multiple wholesale lenders through a broker creates tangible value: the broker can identify which lenders offer 12-to-18-month locks, what those locks cost, and whether the all-in pricing (rate plus lock fee plus LLPA) is competitive relative to alternatives. A borrower working with a single retail lender sees one set of terms. A borrower working through a broker with access to multiple wholesale programs sees the spread — and can make an informed decision rather than a default one.
The Dollar Math: What a 0.25% Rate Difference Costs Over 30 Years
Abstract discussions about rate differences become concrete when you run the actual numbers. Let’s do that.
Assume a $400,000 permanent loan on a 30-year fixed after construction is complete. You’re comparing two offers: one at 6.75% and one at 7.00%.
At 6.75%: Monthly principal and interest payment = $2,594.29
At 7.00%: Monthly principal and interest payment = $2,661.21
Monthly difference: $66.92
Over 360 payments (30 years): $24,091.20 in additional interest paid at the higher rate.
That $24,091 figure is the cost of a 0.25% rate difference on a single $400,000 loan. It’s not a rounding error. It’s a meaningful sum that most borrowers would prefer to keep.
Now layer in the breakeven calculation. Suppose the lower rate at 6.75% required paying $2,000 more in upfront costs — either discount points, a rate lock fee, or a combination of both. The breakeven math is straightforward: $2,000 divided by $66.92 per month equals approximately 29.9 months, or just under 30 months.
If you plan to stay in a custom-built home for more than 30 months — which is the overwhelming pattern for custom builds, where buyers have invested significant time and capital in designing a home to their specifications — the lower rate wins decisively. You recover the upfront cost in under two and a half years and save over $22,000 in the remaining loan term.
These figures are illustrative. Actual rates vary by lender, borrower profile, and market conditions. But the math framework is transferable to any rate comparison you encounter. Plug in your actual loan amount, the rate differential you’re seeing, and any upfront cost difference, and you have a precise breakeven figure to evaluate. A mortgage savings calculator can run these scenarios instantly so you can compare offers side by side before committing.
The broker advantage connects directly here. A mortgage broker accessing multiple wholesale lenders can often surface a 0.25% spread that a single retail lender’s shelf simply doesn’t offer. On a construction-to-permanent loan, where the permanent rate is set at origination or at conversion, that spread is worth finding before you commit. The CFPB’s rate shopping guidance consistently reinforces that borrowers who obtain multiple Loan Estimates before committing are better positioned to negotiate — and the construction loan context, with its longer timeline and higher complexity, makes that guidance even more relevant.
The bottom line: rate shopping on a construction-to-permanent loan isn’t a nice-to-have. Given the dollar amounts at stake, it’s a financial obligation to yourself.
Broker vs. Single Lender: Who Prices Construction Loans Competitively?
Construction loans are not a commodity product. Not every lender offers them, and among those that do, pricing, draw flexibility, and rate lock options vary significantly. That variability is exactly why the channel you use to access lenders matters.
The comparison table below illustrates the structural differences across channels:
Lender Access: Shop Mortgage Rates / Coast2Coast Mortgage (broker) accesses hundreds of wholesale lenders. Single retail lenders like Rocket, Guild Mortgage, Movement, Embrace Home Loans, or Veterans United offer their own in-house programs only. National lead-generation platforms route your inquiry to participating lenders without direct broker advocacy on your behalf.
Construction Loan Product Availability: Broker channels can match borrowers to wholesale lenders that specifically offer construction-to-permanent products with competitive pricing. Single retail lenders offer whatever is on their shelf — which may or may not include construction products, and which is priced to include retail margin.
Rate Lock Flexibility (12–18 Month Options): Available through select wholesale lenders accessed via broker. Single retail lenders vary; extended locks are not universally available. Lead-generation platforms do not control lock terms.
Soft-Pull Pre-Qualification: Available through Shop Mortgage Rates via NoTouch Credit Pull — no hard inquiry, no credit impact. Single retail lenders typically require a hard pull at pre-approval. Lead-generation platforms vary, and the inquiry implications are often unclear.
LLPA Optimization Capability: A broker can match the borrower’s credit score, as-completed LTV, and loan purpose to the wholesale lender whose LLPA grid prices that specific profile most favorably. Single retail lenders apply their own LLPA interpretation without cross-lender comparison. Lead-generation platforms do not perform LLPA optimization.
Draw Schedule Control: Varies by wholesale lender accessed through broker; broker can identify lenders with flexible draw structures. Single retail lenders use proprietary draw processes. Lead-generation platforms have no draw schedule involvement.
Speed to Close: Broker channels with wholesale lender relationships and streamlined processing can achieve competitive close times. Single retail lenders vary by internal capacity. Lead-generation platforms are not originators and do not control close timelines.
The soft-pull pre-qualification point deserves emphasis in the construction context specifically. A no hard inquiry mortgage pre approval through Shop Mortgage Rates lets you understand your rate range and LLPA exposure before signing a builder contract. That’s a meaningful risk-reduction step. If the pre-qualification reveals a credit profile that would trigger adverse LLPA pricing, you have time to address it before committing to a build timeline. A single-shelf retail lender typically won’t offer that clarity without triggering a hard inquiry — which affects your score and starts a clock on your rate quote. Understanding the benefits of loan preapproval before you engage any lender is one of the most underutilized advantages available to construction borrowers.
The NoTouch Credit Pull uses Vantage Score 4.0, which incorporates trended credit data and provides an early read on where you stand before any hard inquiry is triggered. It’s the right first step for any borrower considering construction loan financing.
Qualifying for Construction Loan Financing: What Underwriters Actually Scrutinize
Construction loan underwriting is more complex than standard purchase mortgage underwriting. Lenders are evaluating not just your financial profile but also the viability of a project that doesn’t exist yet. Here’s what actually gets scrutinized.
Credit Score and Vantage Score 4.0 Context: Construction-to-permanent loans often carry tighter credit overlays than standard purchase loans. Conventional construction products typically require a minimum 680 FICO, though requirements vary by lender and program. On the government-backed side, VA construction loans have no VA-mandated minimum credit score, and certain wholesale lenders accept VA construction-to-permanent loans down to 500 FICO — though lender overlays apply. FHA One-Time Close programs have their own credit thresholds that are generally more accessible than conventional requirements.
Using Shop Mortgage Rates’ NoTouch Credit Pull — powered by Vantage Score 4.0 — gives you a soft credit pull mortgage pre-qualification that reveals your credit profile without triggering a hard inquiry. This is particularly valuable in construction financing, where the timeline between pre-qualification and actual closing can span many months. You want to know where you stand early, without burning a hard inquiry on a timeline that hasn’t been finalized. Reviewing government-backed home loan options alongside conventional construction products gives you a complete picture of which program best fits your credit profile and down payment situation.
Down Payment and Reserve Requirements: Conventional construction loans typically require 20-to-25% down based on the as-completed value. Government-backed one-close programs can lower that threshold materially: FHA One-Time Close allows lower down payment thresholds than conventional, and VA construction loans may allow eligible borrowers to finance with little to nothing out of pocket at closing beyond funding fees and allowable costs. Lenders also scrutinize cash reserves carefully in construction scenarios, because builds run over budget. Having documented reserves beyond the minimum down payment strengthens your file significantly.
Builder Approval Process: This is the underwriting element that surprises borrowers most. The lender must approve your general contractor, not just your financial profile. Underwriters review the builder’s state license, liability insurance coverage, lien waiver process, and sometimes financial statements. The builder must be in good standing, adequately insured, and — for VA construction loans — registered with the VA.
Borrowers who choose a builder before securing financing sometimes discover that their preferred contractor doesn’t meet lender requirements. That’s a costly discovery to make mid-process. The better sequence: get your mortgage pre-qualification first, understand the builder approval criteria for your target loan program, and then select a contractor who meets those criteria. A broker who works construction-to-permanent loans regularly can tell you exactly what documentation the wholesale lenders in their network require for builder approval — before you make a commitment that’s difficult to unwind.
8 Questions Borrowers Always Ask About Construction Loan Financing
Can I get a construction loan with less than 20% down?
Yes, through government-backed one-close programs. FHA One-Time Close and VA construction-to-permanent loans both offer lower down payment thresholds than conventional construction products. Conventional construction loans typically require 20-to-25% down based on the as-completed value. Your eligibility depends on the specific program and your credit profile.
What happens if my builder goes over budget on a construction loan?
The construction loan is approved for a fixed amount based on the original contract and budget. If the build exceeds that amount, the borrower is typically responsible for covering the overage out of pocket. This is why lenders scrutinize cash reserves and why maintaining a contingency fund — commonly 10-to-15% of the construction budget — is standard practice.
Can I use a VA loan for new construction?
Yes. VA-backed construction loans are available through certain wholesale lenders. The builder must be VA-registered, and lender overlays apply on credit score requirements. Some wholesale lenders accept VA construction-to-permanent loans down to 500 FICO. See VA.gov’s home loan program page for program eligibility details.
How long does construction loan approval take?
Construction loan approval typically takes longer than a standard purchase mortgage because underwriters must review the builder credentials, construction contract, and as-completed appraisal in addition to the borrower’s financial profile. Expect 30-to-60 days for full approval, depending on lender capacity and the completeness of your documentation package at submission.
What is a draw schedule and who controls it?
A draw schedule is the staged disbursement plan that governs when and how construction loan funds are released. Funds are released in tranches — typically four to six stages — after a third-party inspector confirms that the corresponding work has been completed. The lender controls the release of funds. The borrower and builder submit draw requests; the lender orders the inspection and releases payment upon sign-off.
Is the interest rate on a construction loan fixed or variable during construction?
During the construction phase, the rate is typically variable — often tied to prime or SOFR — on both standalone construction loans and the construction phase of two-close products. On one-close construction-to-permanent loans, the permanent rate may be locked at origination or at conversion, depending on the lender program. Confirm the specific rate structure in your loan documents before committing.
Can I get pre-approved for a construction loan before choosing a builder?
Yes, and it’s the recommended sequence. A mortgage pre approval without hard pull through Shop Mortgage Rates lets you understand your rate range, LLPA exposure, and eligible loan programs before you select a builder or sign a construction contract. Knowing your financing parameters first gives you leverage in builder negotiations and prevents costly surprises mid-process.
What credit score do I need for construction loan financing?
Conventional construction-to-permanent loans typically require a minimum 680 FICO, though requirements vary by lender. FHA One-Time Close programs have more accessible thresholds. VA construction loans have no VA-mandated minimum, with certain wholesale lenders accepting down to 500 FICO. Use Shop Mortgage Rates’ NoTouch Credit Pull — a soft pull mortgage broker pre-qualification using Vantage Score 4.0 — to get an early read on your credit profile before triggering a hard inquiry. See FICO’s score model overview for context on how score models differ.
Putting It All Together: Your Path Forward
Construction loan financing is not a single product. It’s a structured sequence of decisions: loan structure choice, draw schedule mechanics, rate lock timing, LLPA optimization, and builder vetting. Each decision has a measurable dollar impact, and the compounding effect of getting multiple decisions right — or wrong — can easily reach five figures over the life of the loan.
The worked math makes this concrete: a 0.25% rate difference on a $400,000 permanent loan is $24,091 over 30 years. A $2,000 upfront cost to secure that lower rate breaks even in under 30 months. For a custom-built home where the owner plans to stay long-term, that math is straightforward.
The borrower who shops across multiple wholesale lenders before signing a builder contract is in a fundamentally stronger position than one who accepts the first offer. They understand their LLPA exposure. They know which lenders offer extended rate locks and what those locks cost. They’ve used a soft credit pull mortgage pre-qualification to understand their rate range without triggering a hard inquiry. They’ve selected a builder who meets lender approval criteria before committing to a contract that’s difficult to unwind.
That’s the position we help borrowers reach. Securely pre-qualify in minutes through Shop Mortgage Rates — no credit impact, no commitment, and no hard inquiry. You’ll get a clear picture of what your construction-to-permanent loan profile looks like before the build begins, with access to wholesale lender pricing that a single retail offer simply can’t match.