Blog

Notes on building ADUs in Solana Beach.

Sprinklers Follow the House

Nov 11, 2026

Does a Solana Beach ADU need fire sprinklers? Only if the main house is required to have them. How the city and state rules work and what goes on the plans.

The 500 Square Foot Landscape Line

Nov 11, 2026

Solana Beach asks for a full landscape package once an ADU project's aggregate landscape area passes 500 sq ft. How the city counts it and what goes in it.

The 60% line: On Solana Beach's FAR worksheet, crossing the 60% threshold caps the ADU at 800 sq ft. How to check where your lot lands before designing.
Coastal letter first: Solana Beach asks for a Coastal Commission approval letter with the ADU permit application. Why that reorders the schedule, and what to do meanwhile.