CalHFA ADU Grant Program 2026: Up to $40,000 for Your ADU

What Is the CalHFA ADU Grant?

The California Housing Finance Agency (CalHFA) offers grants of up to $40,000 to help homeowners cover pre-development costs for ADU construction. This is free money — a grant, not a loan — that doesn't need to be repaid as long as you meet the program terms.

What the Grant Covers

The CalHFA ADU grant covers pre-development costs including:

• Architectural and design fees
• Engineering (structural, civil, soils reports)
• Permit fees and plan check fees
• Impact fees
• Site preparation costs
• Property surveys
• Energy compliance (Title 24 calculations)

Note: The grant does not cover actual construction costs — but it significantly reduces out-of-pocket expenses during the planning phase, which is often the most financially stressful part.

Eligibility Requirements

• Owner-occupied: You must live in the primary residence on the property.
• Income limits: Your household income must be at or below 80% of the Area Median Income (AMI) for low-income or moderate-income programs. Check CalHFA's website for current income limits in your county.
• Property type: Single-family home, manufactured home on permanent foundation, or multi-family property (2–4 units).
• First-time ADU: The grant is generally for new ADU construction, not renovations of existing units.
• Approved lender: You must work with a CalHFA-approved participating lender.

How to Apply

1. Check eligibility: Verify income limits for your county on the CalHFA website.
2. Find a participating lender: CalHFA maintains a list of approved lenders on their website.
3. Gather documents: Income verification, property deed, preliminary ADU plans or design concept.
4. Submit application through the participating lender.
5. Receive approval and begin spending on eligible pre-development costs.
6. Submit receipts for reimbursement of approved expenses.

Tips to Maximize Your Grant

• Apply early: Funding is limited and allocated on a first-come, first-served basis.
• Bundle costs: Coordinate all pre-development work (architect, engineer, surveys, permits) to maximize the $40,000 cap.
• Combine with other incentives: The CalHFA grant can be combined with IRA energy credits (up to 30% for qualifying construction) and local utility rebates.
• Use pre-approved plans: If your city offers them, you'll spend less on architecture — leaving more grant money for permits and engineering.

Other California ADU Financial Incentives

• SB 13 fee waivers: Impact fee waivers for ADUs under 750 sq ft (verify 2026 extension status).
• IRA Section 45L energy credits: Up to 30% for qualifying energy-efficient ADU construction (through 2032).
• Local utility rebates: Some utilities offer rebates for all-electric construction, solar, and EV charging.
• Property tax exclusion: Under Prop 19, certain transfers between family members may exclude the ADU from reassessment.

For a complete cost analysis, see our 2026 ADU cost guide.

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