Berkeley Unpermitted ADU Legalization readiness starts with a complete, source-linked city packet and early screening for utility, site, and energy-code issues.
For Berkeley, package legalization scope as a contractor-facing checklist before quote finalization. Treat city-specific notes as pre-bid exclusions unless verified.
Free users see the starter item. Pro unlocks the full contractor checklist.
Request a project packet for this job, or use Pro when you are checking multiple ADU quotes each month.
View sample packetEach flag explains why it matters and what to do next.
Trigger: Every permit readiness page
Why it matters: The product helps scope requirements and reduce avoidable omissions, but the city is the permitting authority.
What to do next: Use the linked official sources and confirm borderline conditions with the city before submitting.
SourceTrigger: New meters, panel upgrades, separate billing, new service, or larger detached units
Why it matters: Electrical service, meter spotting, and utility comments can delay construction even after the building packet looks clean.
What to do next: Ask the owner and electrician for panel size, meter count, service points, and separate billing intent before quote finalization.
SourceTrigger: Legalizing an existing unpermitted ADU
Why it matters: Legalization projects need existing-condition evidence and correction scope, not just a new-build checklist.
What to do next: Start with the city's amnesty or legalization intake path and document pre-2020 status where relevant.
SourceEvery high-impact claim should be traceable to the city or state source.