The decision between a private construction lender and a traditional bank shapes nearly every variable that determines whether a build succeeds on schedule. How fast you close, how much equity you put in, how much income documentation you're required to produce, and how much flexibility you have when the project hits friction, all of it flows from that single choice.
Both options are legitimate. Neither is universally superior. The right answer depends on your financial profile, your timeline, the scale of your operation, and your exit strategy.
How Construction Loans Work
A construction loan is a short-term credit facility that funds a ground-up build in stages rather than as a lump sum. The lender releases draws as the project hits predetermined milestones (foundation, framing, rough-in, close-in, and completion), typically verified through inspections. During the build phase, borrowers pay interest only on drawn amounts, not on the full committed loan balance.
At project completion, two paths exist:
Construction-to-permanent: The loan converts to a standard mortgage at a single closing, reducing total transaction costs.
Construction-only: The borrower pays off the construction balance and secures separate permanent financing at completion, which allows more flexibility to shop rates when the project wraps.
Because the collateral doesn't exist in finished form during the build, every lender has to underwrite on forward-looking assumptions. Where private construction loan lenders and banks diverge is in how much weight they assign to borrower profile versus project viability, and how quickly they can act once the application is in.
Traditional Bank Construction Loans: What to Expect
Traditional bank construction loans are designed primarily for owner-occupants with clean financial profiles, stable W-2 income, and no urgency on the close. Understanding the full approval process helps borrowers assess whether that structure matches their project.
Approval Timeline and Documentation
Bank construction loans typically close in 30 to 60 days, with more complex projects pushing toward three to six months from builder selection to closing. The appraisal alone, which requires completed floor plans, a builder contract, and comparable sales data, takes several weeks in most cases.
Banks evaluate the borrower's full financial profile. Required documentation typically includes:
W-2s and tax returns for income verification
Bank statements to source assets and verify reserves
Detailed construction plans and a line-item budget
A licensed builder's contract and, in some cases, the builder's own financial statements
Banks also require lender-approved builders. Owner-builders are typically ineligible unless they hold a general contractor license, a standard across most bank programs, which removes a significant segment of self-directed developers from bank qualification entirely.
Two factors compound timeline risk. Underwriting queues fluctuate with loan volume, and any documentation gap requires a round-trip with the borrower that adds days or weeks. For projects where contractor availability windows are fixed or land acquisition timelines are tight, a 60- to 90-day approval process creates real exposure.
Credit Score and Down Payment Requirements
Most conventional bank construction loans require a minimum FICO of 680 to 700. The average approved borrower in 2025 carried a 721 score, well above the 620 floor used for standard conventional mortgages.
Down payment requirements are substantial:
Most lenders require 20% to 30% of total project cost
On a $400,000 project, that means $80,000 to $120,000 in committed equity before a shovel breaks ground
Custom builds and investment properties may push toward 25% to 30% due to limited comparable sales data for appraisals
According to NAHB's Eye on Housing blog, average contract rates on single-family construction loans in Q3 2025 were 7.90% for both speculative and pre-sold builds. When lender points are factored in, the effective interest rate climbed to 12.04% on speculative construction and 12.74% on pre-sold construction, well above the 6.89% average 30-year fixed mortgage rate reported by the Federal Housing Finance Agency for the same period.
Debt-to-income (DTI) ratio is evaluated alongside income verification. Borrowers with complex income structures, such as 1099 income, multiple LLCs, or seasonal revenue, routinely hit bank underwriting friction even with strong credit scores and healthy assets.
Private Construction Loans: How Private Lenders Operate Differently
The structural differences between private construction loan lenders and banks go beyond rate. Underwriting criteria, documentation requirements, approval speed, and loan flexibility all work differently, and each of those differences has direct implications for how a project runs.
Speed and the Asset-Based Approval Model
A private construction lender underwrites on asset value and project viability, not W-2 history or DTI ratio. That shift in underwriting philosophy is what makes the speed differential possible.
Approval decisions come quickly, often within 24 to 72 hours, with funding closing in as few as 7 to 14 days. For builders managing multiple simultaneous projects or competing for time-sensitive land acquisitions, that speed differential isn't a convenience. It's a competitive edge.
Qualification Criteria
Private lending construction loans use a different qualification framework than banks. The core factors private construction loan lenders evaluate include:
After-completion value: What the finished property is projected to be worth in the current market
Project feasibility: Whether the plans, budget, and timeline hold up under scrutiny
Exit strategy: How the borrower plans to repay at maturity, whether through sale, refinance, or a rental hold
Credit scores matter, but aren't disqualifying. Many private lenders work with scores near 600, with deal strength carrying more weight than the score itself. Income verification is not required. Borrowers who are self-employed, operating through holding companies, or whose income doesn't translate cleanly to a bank's underwriting model qualify regularly for private new construction loans.
Track record carries significant weight. A documented history of completed projects signals reduced execution risk, which can translate into more favorable terms. First-time builders can still qualify, but should expect tighter scrutiny on plans and budgets.
Loan Structure and Terms
Private new construction loans are short-term, interest-only instruments. Loan terms run six to 24 months, aligned with realistic construction timelines.
Casa Lending's new construction loans run from $100,000 to $10,000,000, covering single-family homes through quadplexes, structured as interest-only, first-position lien facilities. There are no project-count caps, which means borrowers managing simultaneous builds aren't constrained by program limits the way they often are with private money partners.
The primary underwriting levers are Loan-to-Cost (LTC) and Loan-to-Value (LTV):
LTC measures how much of the total project cost the lender will fund
LTV measures the loan amount against the projected completed value
A deal with strong market comps and a well-underwritten budget can qualify for meaningful leverage even when the borrower's personal income structure wouldn't clear a bank's income test. Interest-only payments during construction also keep carrying costs lower than amortizing structures, which matter when no project revenue exists until completion.
The Rate Trade-Off
Private construction loans carry higher interest rates than bank loans, and borrowers should model that honestly in their project pro formas.
The relevant comparison, though, isn't rate in isolation. It's total project cost given the realistic timeline and risk profile of each option. Consider the variables that compound when a bank approval runs long:
Contractor start slots lost while waiting on a 90-day close
Materials cost escalation during an extended approval window
Lot acquisition timelines that can't wait for underwriting queues
The NAHB's AD&C Financing Survey reported fifteen consecutive quarters of tightening bank credit conditions through Q3 2025, with lenders citing lower allowable LTV/LTC ratios and reduced loan amounts as the primary tightening levers. When bank credit tightens, the realistic timeline for a bank approval stretches, which compounds the carrying cost gap. A bank loan at 8.5% that takes 90 days to close can cost more in real project economics than a private construction loan at 11% that closes in 10 days, once contractor delays, materials escalation, and holding costs are factored in.
Origination fees and points are also part of the true cost calculation for private loans. Understanding hard money rate drivers, including LTV, points, and asset type, helps borrowers model the all-in cost accurately against the bank alternative.
For borrowers who qualify cleanly for bank financing and have flexible timelines, the lower rate may justify the longer process. For investors and developers who move at market speed, manage multiple projects, or don't fit the bank income profile, private lending construction loans often produce better project outcomes despite the higher rate.
Which Option Fits Your Situation?
Private lending construction loans fit real estate professionals managing time-sensitive builds, developers running multiple simultaneous projects, and borrowers whose income structure creates friction in bank underwriting. The speed, flexibility, and asset-based qualification criteria are structural advantages, not workarounds.
Bank loans are the stronger fit for owner-occupants building a primary residence with clean W-2 income, a 700+ credit score, and a timeline that accommodates a 60- to 90-day approval process.
The two aren't always competing options. Some borrowers use a private construction loan to break ground quickly, then refinance into permanent bank financing at completion, capturing the speed advantage up front and the rate advantage on the back end. A solid private construction lender will underwrite with that exit in mind from day one.
What to Look for in a Private Construction Lender
Choosing a private construction lender isn't a commodity decision. The lender's draw process, construction experience, and communication practices determine how the project runs day to day, not just how it starts.
Key factors to evaluate before committing to a lender:
Draw turnaround speed. Slow draw processing stalls subcontractors. If a lender takes two weeks to fund a draw after an inspection, contractors wait, timelines compress, and change order costs follow. Ask specifically how long draws take after inspection sign-off.
Loan amounts that scale. Lenders with low project caps or portfolio-level limits create refinancing exposure mid-build. If the program can't support a second or third simultaneous project, it isn't built for professional volume.
Construction-specific experience. Hard money construction loans are structurally different from bridge loans or fix-and-flip financing. A lender experienced with ground-up construction understands milestone-based draw schedules, inspection sequencing, and the cost overrun dynamics that hit in the back half of a build.
Fee and rate transparency. Origination points, draw fees, and extension options should be disclosed up front. A lender who makes you work to extract the full fee structure may create surprises mid-project.
First-position lien. A private construction loan should always be in first-lien position, meaning the lender holds the primary claim on the property. Casa Lending's new construction loans are structured as first-position liens as a program standard.
Communication across the full build. The lender relationship runs for the duration of the project. A lender who is responsive before closing but slow after it creates friction at every draw cycle. References from borrowers on comparable projects are worth asking for.
Understanding what lenders evaluate beyond credit score, including deal strength, exit strategy, and market viability, is what positions a borrower to make an informed choice rather than a pressured one.
Making the Decision
The financing structure that fits a build is the one that matches the project timeline, the borrower's income profile, the scale of the operation, and the tolerance for documentation overhead.
For builders and developers who need capital that moves at the pace of their business, with terms structured around the project rather than pay stubs, a private construction loan is the mechanism built for that. The rate is higher. The documentation is lighter. The close is faster. For a project where time is a real cost, that combination holds up on the numbers.
Apply with Casa Lending to get qualified for a new construction loan and find out how quickly your project can move.
