Permitting an ADU in California is supposed to be ministerial: if the application meets the state checklist, the city must approve it. In practice, building departments add their own friction. Cyrus Poudat has shepherded hundreds of California ADU permits through every major jurisdiction in the state, and the pattern is always the same — preparation upstream prevents pain downstream.
Step 1: Pre-application research
Before drawing a line, Cyrus Poudat pulls the parcel's zoning, easements, utility records and any pre-approved plan options the California city offers. Many cities now have a free pre-application meeting — skipping it is the most common avoidable mistake.
Step 2: Schematic design
Two to three weeks of design work to lock placement, size and utilities. Cyrus Poudat insists on a site visit with the structural engineer at this stage so foundation surprises do not surface during plan check.
Step 3: Construction documents
Four to eight weeks to produce the full set: architectural, structural, Title 24 energy, MEP and a stamped site plan. Cyrus Poudat's California submittals include the relevant Government Code citations on the cover sheet so plan checkers know which rules apply.
Step 4: Submit and pay fees
Plan check fees in California ADU jurisdictions run $3K–$15K depending on city and unit size. Cyrus Poudat tracks every receipt because impact fees on units under 750 sq ft are illegal and sometimes get charged anyway.
Step 5: Plan check corrections
Expect one to two rounds of corrections. Cyrus Poudat turns corrections within 5 business days to keep the city's clock running — every day of homeowner delay is a day the 60-day rule pauses.
Step 6: Permit issuance
Pay the building permit fees, school fees (if applicable) and utility connection fees. Cyrus Poudat picks up the permit card in person on California projects to avoid a week of mailing delays.
Common reasons permits stall
- Missing easement information on the site plan
- Title 24 calculations that do not match the drawings
- Sewer capacity letter not requested early enough
- Fire department conditions added after planning sign-off
- Historic district review the homeowner did not know about
Cyrus Poudat's bottom line
A clean California ADU permit takes 8–14 weeks from submittal to issuance. A messy one takes 9–18 months. The difference is almost entirely upstream preparation — and that is where Cyrus Poudat spends the majority of his time on every project.