Del Mar ADU questions
Short answers linking to full guides. Checked October 14, 2026.
Del Mar rules
When did the current rules take effect?
June 12, 2025, on Coastal Commission certification. More on this.
How big can my ADU be?
850 or 1,000 sq ft detached, 50% of the house attached, with an 800 sq ft universal size. More on this.
Do I need a coastal permit?
Usually an administrative CDP; some conversions and attached ADUs are exempt. More on this.
How long is approval?
Within 60 days of a complete application for compliant plans. More on this.
Your project
Can I have an ADU and a JrADU?
Yes, if the ADU is detached and you're in a single dwelling unit zone. More on this.
Do I need parking?
State caps and exemptions apply; garage conversions need no replacement parking. More on this.
Can I legalize an older unit?
Yes, through the city's ADU Amnesty Program for units existing as of April 15, 2021. More on this.
Working with us
Who builds it?
We build with verified, licensed contractors and share license details before you sign.
What will it cost?
We don't publish prices. You get a written estimate after a site visit. More on this.
Questions
When did the current rules take effect?
June 12, 2025, on Coastal Commission certification.
How big can my ADU be?
850 or 1,000 sq ft detached, 50% of the house attached, with an 800 sq ft universal size.
Do I need a coastal permit?
Usually an administrative CDP; some conversions and attached ADUs are exempt.
How long is approval?
Within 60 days of a complete application for compliant plans.
Can I have an ADU and a JrADU?
Yes, if the ADU is detached and you're in a single dwelling unit zone.
Do I need parking?
State caps and exemptions apply; garage conversions need no replacement parking.
Can I legalize an older unit?
Yes, through the city's ADU Amnesty Program for units existing as of April 15, 2021.
Who builds it?
We build with verified, licensed contractors and share license details before you sign.