Quick answer: Financing an ADU costs $40,000–$225,000 in Los Angeles, depending on the loan type and available home equity. APLA Construction (CA Lic #1136359) walks through both construction scope and financing options during the free consultation.
How to Finance an ADU in Los Angeles in 2026
Building an ADU in Los Angeles costs $85,000–$225,000 depending on type and neighborhood. Very few homeowners pay for this out of pocket — the majority finance through one of several available loan products. This guide covers the five main ADU financing options available to Los Angeles homeowners in 2026, with the pros and cons of each.
ADU Construction Costs — What You Are Financing
Before choosing a financing product, understand what the loan needs to cover:
| Item |
Typical Cost |
| Garage conversion ADU |
$85,000–$145,000 |
| Detached new construction ADU (studio/1BR) |
$145,000–$195,000 |
| Detached new construction ADU (2BR) |
$175,000–$225,000+ |
| Interior JADU conversion |
$40,000–$75,000 |
Total financing need for most Los Angeles ADU projects: $100,000–$200,000.
Option 1: HELOC (Home Equity Line of Credit)
Best for: Homeowners with 30–40%+ equity and good credit who want flexibility.
- How it works: A revolving credit line secured by your home equity. Draw funds as needed during construction.
- Typical terms (2026): Variable rate (Prime + 0.5%–2%), 10-year draw period, 20-year repayment. Current HELOC rates: approximately 7.5%–9.5% for well-qualified LA borrowers.
- Pros: Draw only what you need, when you need it. Interest only during draw period. No prepayment penalty.
- Cons: Variable rate exposure. Requires significant existing equity. Technically secured by your primary home.
- Required equity: Most lenders require 20–25% remaining equity after the HELOC. For a $1.2M Sherman Oaks home with $400K mortgage, a $200K HELOC leaves $600K equity — most lenders comfortable with this position.
Option 2: Cash-Out Refinance
Best for: Homeowners with a high-rate existing mortgage who want to lower their rate and extract equity simultaneously.
- How it works: Refinance your existing mortgage for more than you owe, take the difference in cash. New mortgage at current market rate.
- Typical terms (2026): 30-year fixed, 6.5%–7.5% for well-qualified borrowers. Maximum LTV typically 80%.
- Pros: Single loan, single payment. Fixed rate. If your existing rate is above 7%, cash-out refi can be competitive.
- Cons: Replaces your entire mortgage, potentially at a higher rate if you have a sub-3% rate from 2020–2021. Closing costs ($6,000–$15,000). Locking in current rates.
- LA equity reality: LA home values have appreciated 60–90% since 2019, giving many homeowners substantial equity available for cash-out.
Option 3: ADU-Specific Construction Loans
Best for: Homeowners who want a purpose-built ADU loan without disturbing their primary mortgage.
- How it works: Stand-alone construction loan specifically for ADU projects. Several lenders now offer ADU-specific products in California: RenoFi, RenoFi ADU loans, and several community banks and credit unions.
- Typical terms (2026): Fixed or adjustable rates, 10–20 year terms, up to $350,000 in many LA markets. Loan based on after-renovation value (ARV) — more loan available than traditional equity-based HELOCs.
- Pros: Does not touch existing mortgage. Underwritten on ARV, which can allow larger loans for lower-equity homeowners. Some lenders offer interest-only during construction phase.
- Cons: Slightly higher rates than traditional HELOCs. Fewer lender options. Requires contractor contract and plans.
Option 4: CalHFA ADU Grant Program
Best for: Not currently available — see the status below.
- How it works: California Housing Finance Agency grant of up to $40,000 for ADU predevelopment costs (plans, permits, site prep). It was a grant — not a loan — with income limits.
- 2026 status: not available. CalHFA’s ADU Grant page states that the latest round of ADU funding was fully allocated on December 28, 2023, and no new round had been announced as of October 2026. CalHFA also warns that anyone approaching you saying they can help you get an ADU grant is running a financial scam. What is open instead in 2026 is covered in our ADU grants in Los Angeles guide.
- Pros: If funding ever returns, it does not need to be repaid.
- Cons: No funding available now; past rounds had income limits and owner-occupancy requirements and were quickly oversubscribed.
Option 5: Personal/Construction Loan
Best for: JADUs or small interior conversions under $75,000 where homeowners do not want to use home equity.
- How it works: Unsecured personal loan or secured construction loan. For JADUs ($40,000–$75,000), unsecured personal loans from banks or credit unions can cover the full project.
- Typical terms (2026): 5–10 year term, 8%–15% rate depending on credit score. Not appropriate for larger ADU projects.
Frequently Asked Questions — ADU Financing Los Angeles
What is the best way to finance an ADU in Los Angeles in 2026?
For most Los Angeles homeowners with 30%+ equity: HELOC or ADU-specific loan. The HELOC offers flexibility; ADU-specific loans offer higher LTV (based on ARV) without disturbing the existing mortgage. For homeowners with low existing equity: ADU-specific ARV-based loans are the primary option. Do not plan around CalHFA’s ADU grant — it has had no funding since its last round was fully allocated in December 2023.
How much can I borrow for an ADU in Los Angeles?
HELOC: based on existing equity (commonly $150,000–$300,000 available on a $1M–$1.5M LA home). ADU-specific loans: up to $350,000 based on after-renovation value. Most LA homeowners can access $150,000–$250,000 through one of these products, sufficient for a full ADU construction.
Does APLA help with ADU financing guidance?
APLA (CA Lic #1136359) provides detailed ADU cost estimates and connects Los Angeles homeowners with ADU-specialized lenders during the initial consultation process. Call (818) 818-4419 — we walk through both the construction scope and the financing options during your free ADU feasibility consultation.
Do I need good credit to qualify for ADU financing?
For a HELOC or cash-out refinance, most lenders want a credit score in the mid-600s or better along with sufficient home equity. ADU-specific construction loans that lend against after-renovation value can be more flexible on credit but often carry higher rates. CalHFA’s ADU grant used income-based eligibility rather than credit score, but it is not currently funded.
Start Your ADU Project with APLA
Call: (818) 818-4419
Email: info@aplaconstruction.com
CA General Contractor License #1136359 — verify on CSLB
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