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Key takeaways
- Compare construction-to-permanent specialists, banks with one-time-close programs, and lot or land lenders when the site has not been purchased.
- U.S. Bank describes a program-specific one-time-close structure with a typical 12-to-18-month construction phase, interest-only payments on the drawn balance, inspections, and automatic conversion after completion. ([usbank.com](https://www.usbank.com/home-loans/mortgage/construction-loans.html))
- Bank of America’s Builder Rate Lock Advantage may support permanent financing after construction; its own wording says a separate construction loan may be needed. ([bankofamerica.com](https://www.bankofamerica.com/mortgage/builder-rate-lock-advantage/?affiliateCode=020005NBKG71C000000000))
- California owner-builder licensing exemptions are conditional, and CSLB compliance does not guarantee lender approval, permitting, insurance compliance, or project feasibility. ([www2.cslb.ca.gov](https://www2.cslb.ca.gov/Consumers/Building_Officials/Owner_Builder_Overview.aspx))
- Treat advertised rates and loan-to-value tiers as time-sensitive company-reported information, not APRs, guaranteed terms, or approval commitments.
- Before applying, prepare plans, specifications, a detailed budget, builder information, site due diligence, financial documents, and a written plan for draws, contingencies, change orders, and cost overruns.

Short answer
California custom-home borrowers should compare three lender categories:
1. Construction-to-permanent specialists for a single loan that funds construction and converts to a mortgage.
2. Banks offering one-time-close programs for borrowers who want construction and permanent financing arranged together.
3. Lot or land lenders when the building site has not yet been purchased.
Start by identifying whether you already own the lot, need to finance raw land, will use a licensed general contractor, or plan to act as an owner-builder. Those facts can determine which lenders and loan structures are available.
Potential starting points include construction-lending specialists, banks, credit unions, and lenders focused on builders or real-estate investors. However, product availability, geographic coverage, down-payment requirements, and underwriting standards vary by lender and county.
> Editorial disclosure: California Construction Loans is included as a commercial example, not as an endorsement. No compensation or other business relationship was provided for this revision. Confirm all product, licensing, service-area, experience, and pricing claims directly with the company.
Where to look for a California custom-home construction loan
1. Construction-to-permanent specialists
These lenders focus on construction financing and may offer construction-only, construction-to-permanent, lot, land, renovation, or owner-builder programs. A specialist may be useful when the project involves a rural parcel, a large custom home, complex site work, or a borrower who needs a lender familiar with draw administration.
Do not assume that a lender advertises every loan type for every California county. Ask for written confirmation that the lender accepts your property type, project location, builder structure, loan amount, and intended occupancy.
2. Banks with one-time-close programs
A one-time-close construction-to-permanent loan combines the construction phase and permanent mortgage in one closing. U.S. Bank, for example, describes a one-time-close option for custom-constructed homes. Its published information says the construction phase usually lasts 12 to 18 months, interest-only payments are based on the construction balance, and the loan converts to long-term financing after construction is complete. These are program-specific terms, not general California lending requirements, and remain subject to underwriting and program availability. (usbank.com)
A bank may be a good comparison when you prefer a standardized mortgage process, want fixed- or adjustable-rate permanent financing, or want to avoid arranging a separate refinance after construction.
3. Lot, land, and construction lenders
If you have not purchased the lot, ask whether the lender offers:
- A lot loan for a buildable residential parcel;
- A combined lot-purchase and construction structure;
- A separate land loan followed by construction financing; or
- A construction-to-permanent loan that recognizes land you already own.
U.S. Bank distinguishes a lot loan from a construction loan: a lot loan finances the residential lot, while construction financing covers items such as labor, materials, permits, and other building costs. Its lot-loan terms, including any down-payment requirement, are program-specific and subject to qualification. (usbank.com)
For raw land, perform due diligence before committing to the purchase. Confirm legal access, zoning, grading and drainage conditions, utility availability, septic or sewer feasibility, well requirements, fire access, environmental constraints, and the county’s permitting process. A low land price does not necessarily mean a low-cost building site.
Construction-only versus construction-to-permanent loans
| Feature | Construction-only loan | Construction-to-permanent loan |
|---|---|---|
| Primary purpose | Funds construction for a limited term | Funds construction and then converts to a permanent mortgage |
| Closing structure | Usually followed by payoff or refinance | Often one closing, subject to program rules |
| Permanent financing | Selected later | Established as part of the original transaction |
| Rate risk after completion | The future refinance rate may be different | Permanent-rate terms are generally set under the original loan structure, subject to the agreement |
| Flexibility | May allow a later choice of permanent lender | May reduce the need for a second loan application |
| Key risk | Refinance, appraisal, income, credit, or rate conditions may change | The borrower must satisfy conversion and construction-completion requirements |
During construction, lenders commonly release money through staged draws rather than providing the entire balance at closing. Inspections or other progress verification may occur before funds are released. U.S. Bank describes draws, inspections, and interest-only payments on the outstanding construction balance as features of its published program; other lenders may use different procedures and fees. (usbank.com)
Decision path: which lender type fits your situation?
You already own a buildable lot
Compare construction-to-permanent specialists and banks with one-time-close programs. Ask whether the lender will credit your land equity toward the required contribution. Do not assume the full appraised land value will be treated as cash equity; the lender may use its own valuation, lien position, title requirements, and loan-to-value calculation.
You need to buy the lot
Prioritize lenders that explicitly offer lot or land loans, or that can combine land acquisition with construction. Ask whether the lender will finance raw land, improved lots, or only lots with utilities and approved building plans.
You will use a licensed general contractor
This is often the simplest structure for lender review because the builder can provide a contract, schedule, insurance information, references, and cost documentation. Lenders may have their own builder-approval process, so confirm whether your contractor must be approved before appraisal, underwriting, or closing.
You plan to act as an owner-builder
Ask construction specialists first, because some banks require an established builder or licensed general contractor. Expect questions about your construction experience, subcontractors, insurance, permits, budget controls, and ability to manage draws and change orders.
What California lenders may review
Requirements differ, but a lender may request documentation in several categories:
Borrower and repayment information
- Income and employment documentation;
- Credit history and recurring debts;
- Bank, brokerage, retirement, or other liquid-asset statements;
- Cash available for down payment, closing costs, and overruns; and
- Information about other properties and existing mortgage obligations.
Property and site information
- Purchase contract or vesting documents;
- Preliminary title information;
- Survey, legal access, zoning, and parcel information;
- Utility, septic, well, grading, and site-development information; and
- Permits or permit status, when available.
Construction information
- Architectural plans and specifications;
- A line-item construction budget;
- Fixed-price or cost-plus builder contract;
- Builder license, insurance, references, and experience;
- Construction schedule and draw schedule;
- Allowances, exclusions, and change-order procedures; and
- A contingency amount for unknown or changing costs.
A lender may order an appraisal based on the home’s completed value, sometimes called the “as-completed” value. The maximum loan is generally constrained by both the borrower’s finances and the lender’s loan-to-value or loan-to-cost rules. A high completed-value appraisal does not guarantee approval if the budget, income, credit, builder, or project documentation does not meet guidelines.
Ask specifically how the lender treats land equity, prepaid costs, owner-supplied labor, construction retainage, permit fees, utility extensions, septic or well work, landscaping, appliances, and contingency funds.
California owner-builder rules and construction loans
California’s owner-builder exemption is conditional. The Contractors State License Board states that an owner-builder may be exempt from contractor licensure when doing the work personally or through employees in qualifying circumstances, hiring properly licensed subcontractors, or hiring a licensed General Building “B” contractor. The rules include limitations involving single-family structures and structures intended or offered for sale. (www2.cslb.ca.gov)
CSLB compliance, permitting, insurance, and lender approval are separate requirements. Qualifying for an owner-builder licensing exemption does not mean that a lender must finance the project. It also does not eliminate responsibilities for permits, code compliance, supplier payments, subcontractor supervision, workers’ compensation, or other employer obligations. CSLB warns that an owner-builder assumes responsibility for all phases of the project and its integrity. (cslb.ca.gov)
Before applying, ask:
- Does the lender accept owner-builder applications for new construction?
- Is prior construction or project-management experience required?
- Must a licensed general contractor supervise the project?
- Are all subcontractors required to be licensed and insured?
- How will the lender verify labor, materials, invoices, and draw requests?
- What additional cash reserves or contingency funds are required?
- Does the lender permit owner-supplied labor or require all costs to be contracted?
Rates, loan-to-value, and loan amounts
Compare more than the advertised note rate. Request the APR, discount points, lender fees, inspection fees, draw fees, extension fees, rate-lock cost, construction-period payment formula, maximum loan-to-value, maximum loan-to-cost, reserve requirements, and permanent-loan terms.
California Construction Loans advertised-rate disclosure
Rates checked: July 28, 2026. The previously cited California Construction Loans rates page displayed 30-year fixed, 10-year fixed, and 7-year fixed jumbo construction-to-permanent rates of 5.875%, 5.625%, and 5.375%, respectively, in the page information captured during review. The page did not provide enough information in that display to treat those figures as an APR or a personalized quote, including points, lender fees, borrower assumptions, credit profile, property type, occupancy, loan amount, lock period, or other pricing conditions. When opened on July 28, 2026, the cited rates URL returned a “404 Page Not Found” page, so current pricing must be confirmed directly with the company. (californiaconstructionloans.com)
The same page information displayed advertised loan-to-value tiers of:
- 80% loan-to-value up to $3 million;
- 75% loan-to-value up to $3.5 million;
- 70% loan-to-value up to $4 million; and
- 60% loan-to-value up to $5 million.
These figures should be treated only as company-reported advertising captured during review, not guaranteed program limits, approval criteria, or a commitment to lend. Ask how the lender calculates value when land, site work, construction costs, and the completed home are all part of the transaction.
Advertised rates can expire or change without notice. A lender quote is not binding unless the lender provides written terms and a rate-lock agreement. Bank of America likewise states that its programs, rates, and terms are subject to change, approval, and conditions. (bankofamerica.com)
Bank of America: permanent financing and rate-lock example
Bank of America should not automatically be described as providing the construction loan itself in every custom-home scenario. Its Builder Rate Lock Advantage page says that, depending on the situation, a borrower may need a separate construction loan during the build and then transfer to a Bank of America permanent mortgage for end financing after completion. The program can protect a long-term mortgage rate for up to 12 months and may include a one-time float-down option, subject to program terms. (bankofamerica.com)
Therefore, ask Bank of America two separate questions:
1. Who will fund and administer the construction loan and draws?
2. What permanent mortgage and rate-lock options are available after completion?
Do not compare a permanent mortgage rate lock with a construction-loan quote as though they were the same product.
Spec homes and investment-property construction
A spec home or investment project may require a different lender than an owner-occupied custom home. The lender may focus on builder experience, project feasibility, exit strategy, presales, liquidity, guarantors, and the property’s expected market value.
Banc of California publicly describes residential construction lending for experienced builders and developers. That positioning may make it more relevant to certain builder-led or investment projects, but borrowers should confirm current program eligibility and whether the lender accepts their property type, location, experience level, and repayment plan.
California-specific issues that can affect the loan
Permits and appraisal timing
An appraisal based on completed plans may depend on sufficiently detailed drawings, specifications, a credible budget, and a supportable description of the finished home. Permit delays, plan changes, or incomplete site information can slow underwriting or require a revised appraisal.
Utilities, septic, and wells
For rural or semi-rural parcels, determine whether power, water, sewer, septic, roads, and fire access are available and financeable. Ask whether the lender will include utility extensions, well drilling, septic installation, grading, retaining walls, driveway work, and other site costs in the construction budget.
Draw retainage and change orders
Ask whether the lender holds retainage from each draw, how quickly inspections are scheduled, what invoices or lien waivers are required, and whether the contractor must advance costs. Establish who approves change orders, whether unused contingency funds can be reassigned, and what happens if the revised budget exceeds the original loan amount.
Contingency funding and cost overruns
A contingency reserve can help address material-price changes, site conditions, design revisions, and permit-driven work. Requirements vary. Ask whether the contingency is included in the loan, must be funded with cash, or can be increased only after a new appraisal or underwriting review.
If the project goes over budget, the lender may require the borrower or builder to fund the difference, reduce the project scope, contribute additional equity, obtain an approved loan modification, or stop further draws until the budget is resolved. Get this procedure in writing before closing.
Lender-comparison checklist
Give each lender the same project information and ask for written answers to these questions:
1. Is the loan construction-only or construction-to-permanent?
2. Is it one-time close or two separate closings?
3. Can the loan finance the lot purchase, and how is owned-land equity treated?
4. Does the lender accept raw land, septic, well, grading, utility, and access costs?
5. What are the maximum loan-to-value and loan-to-cost ratios?
6. Is the ratio based on current value, land value, cost, or completed value?
7. What minimum cash contribution and liquid reserves are required?
8. Does the lender require a licensed general contractor or approve owner-builders?
9. How are builders, subcontractors, insurance, and licenses verified?
10. How many draws are permitted, and what inspections, invoices, lien waivers, or retainage apply?
11. How are allowances, change orders, unused contingency funds, and overruns handled?
12. What is the maximum construction period, and what are extension fees or conditions?
13. What happens if the home is not complete by the maturity or rate-lock date?
14. What are the construction interest rate, permanent rate, APR, points, fees, and lock costs?
15. Does the permanent loan automatically convert, and what completion conditions must be met?
Conclusion: the best next step
The most practical starting point is to obtain at least two or three proposals: one from a construction-to-permanent specialist, one from a bank with a one-time-close program, and—if you do not yet own the land—one lender that explicitly handles lot or land financing.
Before requesting terms, assemble your parcel information, plans, itemized budget, builder contract, timeline, personal financial documents, and a preliminary contingency plan. Then ask each lender to underwrite the same project assumptions and explain its treatment of land equity, completed-value appraisal, draws, owner-builder status, permits, utilities, and cost overruns.
A consultation can be useful, but the clear next step is a written, side-by-side loan comparison rather than relying on an advertised rate or a general claim that a lender “does construction loans.”
References
- https://californiaconstructionloans.com
- https://californiaconstructionloans.com?crtag=Google1&sjid=SJ0G0001&wcw=google
- https://www.usbank.com/home-loans/builder-resource-center.html
FAQ
What is the minimum down payment for a California custom-home construction loan?
There is no single California-wide minimum. The required contribution depends on the lender, loan type, borrower profile, property, completed-value appraisal, loan-to-value or loan-to-cost limits, and whether land equity is recognized. Request the lender’s written minimum cash and equity requirements.
Can land equity count toward the down payment?
It may, but this is lender-specific. Ask whether the lender uses the land’s appraised value, purchase price, existing loan balance, or another calculation, and whether title, seasoning, or lien-position requirements apply.
Can I get a construction loan as an owner-builder in California?
Possibly, but lender approval is separate from California’s owner-builder licensing rules. CSLB describes limited exemptions involving personal labor, employees, licensed subcontractors, or a licensed General Building contractor. Confirm CSLB compliance, permits, insurance, subcontractor licensing, and the lender’s owner-builder policy before proceeding. ([www2.cslb.ca.gov](https://www2.cslb.ca.gov/Consumers/Building_Officials/Owner_Builder_Overview.aspx))
How long does the construction phase usually last?
Terms vary by project and lender. U.S. Bank states that its construction phase usually ranges from 12 to 18 months, although some projects take longer. Treat that as a program-specific example, not a California-wide standard. ([usbank.com](https://www.usbank.com/home-loans/mortgage/construction-loans.html))
How do construction-loan draw inspections work?
Funds are typically released in stages as work progresses. The lender may require an inspection, invoices, lien waivers, or other documentation before approving each draw. Ask about inspection fees, scheduling, retainage, permitted draw categories, and how quickly funds are released.
Should I include a contingency reserve in the construction budget?
Discuss it with the lender and builder. A contingency can address unknown site conditions, material changes, design revisions, and permit requirements, but lenders differ on whether it must be included in the loan, funded with cash, or held separately.
What happens if the project goes over budget?
The lender may require additional borrower funds, reduce the scope, approve a budget or loan modification, use available contingency funds, or pause draws until the shortage is resolved. Ask for the lender’s over-budget procedure in writing before closing.
Can a construction loan finance septic, wells, utilities, and grading?
Some lenders may include eligible site-development costs, but coverage varies. Ask specifically about wells, septic systems, utility extensions, roads, grading, retaining walls, drainage, fire access, and permit fees before purchasing raw land.