CalHFA ADU Grant Program
California Housing Finance Agency (CalHFA)
About This Program
The Grant Map catalogs CalHFA ADU Grant Program in its San Diego, CA research directory. The record carries audience tags for homeowners; those tags do not establish eligibility or current service coverage.
The CalHFA ADU Grant Program provides up to $40,000 to cover predevelopment costs for building an accessory dwelling unit on an owner-occupied property. Eligible costs include site prep, architectural designs, permits, soil tests, and impact fees. The grant does not cover construction costs, but significantly reduces the upfront barrier to building an ADU. Income limits and current funding availability vary by program round.
Must be owner-occupant; income limits vary by program round; covers pre-development costs only (not construction); check CalHFA.ca.gov for current availability and lender list
Record set last reviewed 2026-04-03. How we verify our data.
Other published resources for San Diego, CA, are listed below. Review each separately and ask the administrators whether they can coordinate funding for the same work:
- SDHC Housing Rehabilitation Program, Home Repair Grant Up to $15,000 grant for emergency/accessibility repairs
- SDHC ADU Finance Program Up to $250,000 construction-to-permanent loan at 1%-4% fixed
- SDHC First-Time Homebuyer Program, Low Income Up to 19% of purchase price (max ~$125,000 loan) + $10,000 closing cost grant
- SDHC First-Time Homebuyer Program, Middle Income $40,000 deferred loan + $10,000 closing cost grant
Key Details
- Up to $40,000 for ADU pre-development costs, does not cover construction
- Covers site prep, architectural designs, permits, soil tests, impact fees
- Owner-occupied primary residence required
- Income limits apply, check current round requirements at calhfa.ca.gov
- Call CalHFA at 1-877-922-5432 for current program status
How to Apply
Source check inconclusive. Our automated check on could not determine whether the cited page responds. The page is not marked unavailable; opening it does not verify the program, amount, eligibility, or availability.
Track this programProgram phone: 1-877-922-5432
Some programs require contractor estimates, licenses, or inspections. A cited link may be general, so confirm the current rules with the administrator before hiring; a directory match does not guarantee contractor eligibility or funding.
You may need a contractor or estimate
Some programs for this project type ask for a license, inspection, or written estimate. Confirm the rule before contacting a contractor in San Diego.
Get matched with a contractorEach administrator sets its contractor rules. Confirm exact requirements directly; the cited URL may be a general agency page.
Your application paperwork
The CalHFA ADU Grant reimburses up to 40,000 dollars of the predevelopment and non-recurring closing costs of building an accessory dwelling unit, such as site prep, architectural designs, permits, soil tests, impact fees, and surveys. You apply through a CalHFA-approved ADU lender or participant. Funding is released in rounds, so confirm a round is currently open before you count on it.
Steps to apply
- Confirm you own and occupy the property and meet the income limit for the current grant round.
- Develop your ADU plans (scope of work and budget).
- Contact a CalHFA-approved ADU participant or lender to start the application.
- Submit your ADU plans and income documentation; the grant reimburses eligible predevelopment costs.
Documents you will likely need
- Proof you own and occupy the property.
- Income documentation (pay stubs, W-2s, tax returns).
- ADU plans: scope of work and budget.
- Itemized predevelopment cost documents (designs, permits, soil tests, surveys).
Requirements vary by program and locality. Confirm the exact rules and application route with the administrator. We can help you prepare your paperwork, but you submit it yourself.
Deadline: Subject to funding availability, check CalHFA website for open rounds
Questions about this program?
Email us at no charge. Messages are reviewed manually, but a response time is not guaranteed.
Email us about this programReport a problem with this listing
Frequently asked questions
What amount is listed for CalHFA ADU Grant Program in San Diego, CA?
The Grant Map record states: Up to $40,000 grant for pre-development ADU costs. Confirm the current amount and eligible costs with the administrator.
What audience tags are recorded for CalHFA ADU Grant Program in San Diego?
The directory record carries audience tags for homeowners. These tags do not establish eligibility; confirm the complete current rules with the administrator.
How do I apply for CalHFA ADU Grant Program in San Diego, CA?
Confirm the application route directly with California Housing Finance Agency (CalHFA); use the cited source on this page as a starting point or call 1-877-922-5432. Confirm any fee or cost with the administrator.
Need a Contractor for This Project?
Browse local listings or request an introduction. The Grant Map does not guarantee licensing, program experience, work quality, or funding.
More ways to save on this project
Rebates and discounts that may reduce project cost. Confirm eligibility and coordination rules before including one in your budget.
Find More Programs in San Diego, CA
This is one of several kinds of assistance that may be available. Review other programs separately and confirm whether their administrators allow coordination for the same work.
See All Programs