California continues to expand opportunities for Accessory Dwelling Units (ADUs) with new laws aimed at increasing housing availability, streamlining approvals, and reducing financial burdens for homeowners. Below is a breakdown of the key ADU regulations in effect for 2025.
- Homeowners can now build up to eight detached ADUs on a single lot.
- This expands the previous limit of two ADUs per lot.
- The law aims to increase housing density and provide more rental opportunities.
- New ADUs qualify for a property tax exemption for up to 15 years.
- This law helps homeowners reduce costs when building additional housing units.
- Streamlines the environmental review process for ADUs.
- Junior ADU (JADU) ordinances now receive the same exemptions as standard ADUs.
- This change reduces delays and makes the approval process more efficient.
- Local governments cannot require homeowners to live on the property to rent out an ADU.
- This makes it easier for property owners to invest in rental housing.
- ADUs can now be converted into condominiums and sold separately from the primary residence.
- This change increases homeownership opportunities and property value.
- Cities and local governments cannot impose excessive design or zoning restrictions on ADUs.
- State agencies now have the authority to enforce this law in court.
- This prevents local governments from creating unnecessary barriers to ADU development.
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