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Compare national ADU lenders for San Diego
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Compare ADU Financing Options
| Option | Typical Rate | Best For | Pros / Cons |
|---|---|---|---|
| HELOC | Variable | High equity, phased projects | Pro: Only pay interest on what you draw. Con: Rates can fluctuate. |
| Home Equity Loan | Fixed | High equity, predictable budget | Pro: Stable monthly payments. Con: Receive full amount upfront, paying interest immediately. |
| Construction Loan | Variable during build | Low current equity | Pro: Based on *future* appraised value. Con: Strict contractor and draw requirements. |
| CalHFA Grant | N/A (Free) | Low/Mod Income | Pro: Up to $40K for pre-development. Con: Funds often dry up quickly, strict income limits. |
CalHFA ADU Grant Program
The California Housing Finance Agency (CalHFA) provides up to $40,000 towards pre-development and non-reoccurring closing costs for the construction of an ADU.
Eligibility in San Diego:
- Property must be your primary residence.
- Income limits apply (varies by county, San Diego limits are generally higher than state average).
- Must use an approved lender.
*Note: The grant is distributed via a CalHFA approved lender. It covers permits, impact fees, soil tests, and architectural designs, but not raw construction materials.
San Diego ADU Lenders
Working with local credit unions or regional banks often yields better results for ADU projects, as they understand San Diego's specific property values and ADU regulations.
San Diego County Credit Union (SDCCU)
Excellent for HELOCs with competitive rates and deep local market knowledge.
Mission Fed
Offers specialized Home Equity Loans often used by local homeowners for renovations.
CrossCountry Mortgage
Strong presence in SoCal with dedicated renovation loan departments.
CalHFA Approved Lenders
Required if you are seeking the $40k grant. Check the state registry for San Diego representatives.
How Much Can You Borrow?
Lenders typically allow you to borrow up to a combined loan-to-value (CLTV) ratio of 80% to 85%. Here is a typical San Diego example:
- • Current Home Value: $950,000
- • Existing Mortgage Balance: $500,000
- • Maximum CLTV (80%): $760,000
- • Maximum ADU Loan Amount: $260,000
Fee Waivers & Incentives
To promote affordable housing, San Diego offers significant waivers that drastically reduce your upfront capital requirements:
- Impact Fee Waivers: Development Impact Fees (DIF), Regional Transportation Congestion Improvement Program (RTCIP) Fees, and Water/Sewer capacity fees are entirely waived for ADUs under 750 sq. ft.
- Savings: This can save you $10,000 to $25,000 compared to building in a jurisdiction without these waivers, directly lowering the loan amount you need.
Financing FAQ
Calculate Your ROI & Loan Payments
Use our calculator to estimate your construction costs and determine if your projected rental income will cover your monthly loan payments.