ADU Financing Resources
Everything you need to understand your financing options and prepare for your ADU investment.
Financing Your ADU Project
ADU construction in Twin Falls typically ranges from $80,000 to $350,000+ depending on type and size. Understanding your financing options early in the process helps you set a realistic budget and move forward with confidence.
For a detailed comparison of HELOC vs construction loans, visit our ADU Financing Options page.
HELOC
Borrow against your home equity with flexible draw periods and interest-only payments. Best for homeowners with significant equity.
- • Flexible draw period — use what you need
- • Interest-only payments during draw phase
- • Potential tax deductions (consult advisor)
- • Faster approval than construction loans
- • Lower rates than personal loans
Construction Loans
Purpose-built for building projects. Funds released in stages as construction progresses, convertible to permanent mortgage.
- • Funds released in milestone-based draws
- • Converts to permanent mortgage on completion
- • May not require existing home equity
- • Designed specifically for construction
- • Lender oversight keeps project on track
The Investment Math
An ADU is one of the few home improvements that can pay for itself:
Downloadable Resources
HELOC Guide for ADUs
PDFHow Home Equity Lines of Credit work for ADU projects — eligibility, draw periods, rates, and how to apply.
Construction Loan Comparison
PDFSide-by-side comparison of construction loan options for ADU projects — terms, rates, and requirements.
ADU Financing Checklist
PDFStep-by-step checklist to prepare for ADU financing — documents needed, credit requirements, and timeline.
Get Personalized Financing Guidance
Every project is different. As part of our ADU Feasibility + Budget Range service, you receive a personalized financing options checklist tailored to your specific project, budget, and financial situation — including lender recommendations.
Important: We provide guidance and lender connections, but we are not financial advisors. Consult a financial professional for advice specific to your situation.
Ready to Explore Financing?
Start with a free Readiness Call to discuss your budget and goals, then get a detailed financing checklist with your Feasibility Check.