ADU Financing — CalHFA Grant and Forgivable Equity LA Guide (2026)
The CalHFA ADU Grant Program — authorized by AB 2221 and administered by the California Housing Finance Agency — provides up to $40,000 in pre-development grant funding for qualifying low-to-moderate income homeowners building an ADU in California. The program paused in 2023 after exhausting initial appropriation but was re-funded in 2024 via SB 1211 and AB 2533 with $75 million in 2025-2026 funding. CalHFA also operates the Forgivable Equity Builder Loan and the Affordable Housing Finance Corporation (AHFC) programs that layer onto the ADU grant. This guide covers income eligibility, the 2026 application process, and the real-world project scale these programs support for LA homeowners building ADUs.
CalHFA ADU Grant — the $40,000 pre-development grant
The CalHFA ADU Grant Program provides up to $40,000 to qualifying homeowners to cover pre-development costs: architectural and engineering fees, soil testing, LADBS permit fees, plan-check fees, and utility connection fees. The grant is forgivable after 5 years of the ADU being occupied by the homeowner or rented as affordable housing.
Eligibility income limits for 2026 (updated annually via HUD Area Median Income data): LA County single-person households earning under $100,900 (80 percent AMI), 2-person under $115,300, 3-person under $129,700, 4-person under $144,100. The income limits apply to the borrower's current annual income, not projected income after ADU rental.
Property requirements: the property must be the homeowner's primary residence, zoned for single-family residential (R1, RS, and similar), and not currently have an ADU permit in process that has exceeded the pre-development stage. The property cannot be a second home, rental-only property, or investment property.
Grant disbursement: funds are wired to the contractor or approved vendor upon invoice submission and CalHFA verification. The homeowner does not receive a lump-sum; rather, CalHFA pays directly against verified pre-development expenses up to the $40,000 cap.
Program pause history and 2026 funding
The original $150 million 2022-2023 appropriation was fully committed by mid-2023, causing a program pause that left many LA homeowners with half-completed applications. SB 1211 (2024) provided $75 million in additional funding; AB 2533 (2024) streamlined the application process.
The 2025-2026 funding window opened March 15, 2025 with a revised priority structure favoring homeowners in Fire-Hazard Severity Zones and disadvantaged communities (DACs) as defined by CalEPA CalEnviroScreen 4.0.
Priority for LA homeowners in Palisades, Altadena, and other January 2025 fire-impact areas was established via emergency regulations in April 2025. These homeowners may receive expedited review and priority funding allocation.
As of early 2026, approximately $32 million of the $75 million re-funding remains available. New applications should expect 8 to 14 week review, shorter than the 2022-2023 backlog averages of 20 to 28 weeks.
Forgivable Equity Builder Loan — the $15,000 to $30,000 stackable
The CalHFA Forgivable Equity Builder Loan is a separate program that provides a second loan of up to $30,000 (10 percent of the first-mortgage loan amount) to qualifying homebuyers. It is NOT specifically an ADU program but can be used to purchase a property where ADU construction is planned.
The loan has a 0 percent interest rate and is forgiven after 5 years of occupancy. If the homeowner sells or moves before 5 years, the loan converts to a standard repayment schedule at the prevailing rate.
Income eligibility: under 80 percent AMI in the target county. For LA County in 2026, this means roughly $144,100 for a 4-person household. The loan is layered with a CalHFA first mortgage (FHA, VA, USDA, or conventional).
Stacking with the ADU Grant: eligible homeowners can receive both the Forgivable Equity Builder Loan (for home purchase) and the ADU Grant (for ADU pre-development). The combined aid package reaches $70,000 on a single property purchase plus ADU build.
AHFC — Affordable Housing Finance Corporation options
AHFC is a California nonprofit that provides supplemental funding and technical assistance for affordable housing projects including ADUs. AHFC operates the Low-Income Investment Fund and the ADU Conversion Loan Program.
The AHFC ADU Conversion Loan provides up to $125,000 in low-interest (3.5 to 4.5 percent) construction financing for conversion of existing non-habitable space (garage, basement, attic) to a legal ADU. Income eligibility: under 120 percent AMI.
The AHFC second-lien structure allows the ADU loan to sit behind an existing first mortgage without requiring refinance of the primary. This is attractive for homeowners with sub-4 percent mortgages locked in 2020-2021 who do not want to refinance at current rates.
Loan disbursement is tied to construction milestones: 20 percent at permit issuance, 40 percent at framing inspection, 30 percent at rough-in, 10 percent at final inspection.
Income eligibility mechanics — AMI, HUD, and CalHFA calculations
Area Median Income (AMI) is published annually by HUD and is the foundation for all CalHFA income limits. The 2026 LA County 4-person AMI is $128,300, with the 80 percent AMI limit at approximately $102,640 and the 120 percent AMI limit at $153,960.
CalHFA uses 'projected income' for the application — the borrower's expected income for the next 12 months. Recent pay changes, bonuses, and one-time income are evaluated case-by-case.
Self-employed borrowers provide 2 years of tax returns plus year-to-date profit-and-loss. The income calculation is typically the 2-year average of adjusted gross income from the returns, which can be favorable or unfavorable depending on trends.
Co-borrowers: all household members contribute to the income calculation. The AMI limits apply to the combined household income, not individual income. A 4-person household with two working adults each earning $70,000 has combined income of $140,000 and FAILS the 80 percent AMI test even though each individual's income is modest.
Application process and 2026 timeline
Application initiation: through a CalHFA-approved lender. LA-area approved lenders include Pacific Premier Bank, Opus Bank, Union Bank, Cathay Bank, and 15+ credit unions. The lender pre-qualifies the homeowner before the formal CalHFA submittal.
Pre-qualification documents: 2 years tax returns, 2 months bank statements, current pay stubs, credit report (minimum 680 FICO for most CalHFA programs), property deed or purchase contract, and preliminary ADU design sketches.
Formal CalHFA submittal: the approved lender submits the application package to CalHFA. 2026 average review time is 8 to 14 weeks. Expedited review for fire-impacted properties averages 4 to 8 weeks.
Post-approval steps: homeowner proceeds with architectural and engineering (the pre-development expenses the grant covers). Invoices are submitted to CalHFA for disbursement. The grant amount reduces the homeowner's out-of-pocket pre-development cost.
Permit submittal to LADBS proceeds independently of CalHFA. The grant does not affect the LADBS timeline — the homeowner still goes through the standard ADU plan-check process, described in the ADU rules guide at https://askbaily.com/guides/adu-rules-ab-1033-sb-9.
Realistic project scale — what $40,000 pre-development buys
LA ADU pre-development costs in 2026: architectural design $8,000 to $18,000, structural engineering $3,500 to $7,500, soil testing and geotech $2,400 to $4,800 (higher in hillside), Title 24 energy analysis $1,200 to $2,400, LADBS permit and plan-check fees $4,800 to $12,000 depending on ADU size, utility connection fees $6,000 to $22,000 (DWP water/sewer, SCE electric).
Total pre-development for a typical 800-sqft detached ADU: $26,000 to $55,000. The $40,000 CalHFA grant covers most or all of this for a modest-size ADU, and substantially offsets a larger ADU's pre-development.
Construction costs are NOT covered by the ADU Grant. Full construction for a 800-sqft detached ADU ranges $280,000 to $480,000 in 2026 LA pricing. Construction financing comes from separate products: home-equity loan, HELOC, construction loan, or AHFC ADU Conversion Loan.
The combined finance package — ADU Grant for pre-dev plus construction loan for build — can reduce the homeowner's out-of-pocket requirement to as little as 10 to 15 percent of total ADU cost.
Alternatives when CalHFA is not a fit
Homeowners above the AMI limits can use conventional financing: home-equity lines of credit (HELOCs) at $200,000 to $500,000 limits, cash-out refinance (less attractive with current rates vs locked-in 2020-2021 rates), or construction-to-permanent loans.
Hearth Financing — NPLD's 2026 partner — provides unsecured home-improvement loans up to $250,000 at 7.99 percent APR and higher, with 550 FICO eligibility and soft-pull pre-qualification. Typical fund time 2 to 7 days. Useful for ADU projects that need quick construction financing without the CalHFA application timeline.
FHA 203(k) renovation loans can include ADU construction up to FHA loan limits ($1,149,825 for LA County in 2026). Requires FHA-approved contractor and consultant.
State Farm, Liberty Mutual, and AAA insurance offer homeowner-improvement loans tied to the policy, but rates are typically 8 to 12 percent APR and loan amounts cap at $75,000.
For the full ADU scope including design, construction, and permitting — the part after pre-development — see the ADU construction service page at https://askbaily.com/adu-construction-los-angeles.
Still have questions?
Ask Baily — pre-seeded for this topic.
Loading chat…
Who is Baily?
Baily is named after Francis Baily — an English stockbroker who retired at 51, became an astronomer, and in 1836 described something on the edge of a solar eclipse that nobody had properly articulated before: a string of bright beads of sunlight breaking through the valleys along the moon’s rim.
He wasn’t the first to see them. Edmond Halley saw them in 1715 and barely noticed. Baily’s contribution was clarity — describing exactly what was happening, in plain language, so vividly that the whole field of astronomy paid attention. The phenomenon is still called Baily’s beads.
That’s what we wanted our AI to do. Every inbound call and text has signal in it — a homeowner’s real question, a timeline, a budget, a hesitation that means “yes but.” Baily listens to every one, 24/7, and finds the beads of light.
Baily was a businessman before he was a scientist. That’s our vibe too.