Typical timelines by project type
Measured from complete submittal to issued permit, assuming a well-prepared set:
- › Interior remodel, no structural work — 4 to 10 weeks
- › Kitchen or bath remodel with structural changes — 2 to 4 months
- › ADU, ministerial review — 3 to 8 months
- › Room addition — 4 to 9 months
- › Custom home, by-right — 6 to 12 months
- › Custom home, coastal or discretionary — 12 to 24 months
- › Multifamily, discretionary — 12 to 30 months
Ministerial versus discretionary review
This is the single most important distinction in California permitting. Ministerial review means that if your project meets objective standards, the city must approve it — no hearing, no discretion, no neighbors. Discretionary review means the city evaluates your project subjectively and can condition or deny it, which usually involves public notice and sometimes a hearing.
Discretionary review commonly adds a year or more. A significant part of good entitlement strategy is structuring a project to qualify for ministerial review where the law allows — which is why state housing laws like SB-9 and the ADU statutes matter so much.
Why projects get delayed
Most permit delays trace to a small number of causes, and most are avoidable:
- › Incomplete submittals — the fastest way to lose two months is to file a set that gets rejected at intake
- › Uncoordinated consultant drawings — when structural and mechanical sets disagree, plan check catches it and sends everything back
- › Multiple correction rounds — each cycle costs 3 to 8 weeks, so the goal is to resolve everything in one or two
- › Overlay triggers discovered late — coastal, historic, or brush zone requirements found after submittal restart significant portions of the process
- › Slow owner response — applications and fee payments requiring owner signature can sit for weeks
What you can actually do about it
You cannot make a plan checker move faster. What you can control is the quality and completeness of what you submit, and how quickly corrections get resolved and resubmitted.
Front-loading coordination — making sure every consultant drawing agrees before filing — is the highest-leverage thing available. A set that clears in two correction rounds instead of four saves months of calendar time for a few weeks of extra care up front.
Common questions
Can I start construction before permits are issued? +
No. Building without a permit risks stop-work orders, fines, and being required to remove completed work. It also creates serious problems at resale when the work does not appear on record.
Do permits expire? +
Yes. Permits generally expire if work does not begin within a set period or if construction is inactive too long. Extensions are sometimes available, but a long-stalled project can require resubmittal under current code.
Does hiring an expediter help? +
Somewhat. An expediter can navigate intake and follow up effectively, but they cannot make plan check approve an incomplete or uncoordinated set. Document quality matters more than expediting.