The Building Permit Process Explained (Bay Area Edition)

Stage by stage

• 1. Plan preparation: architectural drawings, structural calcs, Title 24 energy docs, CALGreen checklist — scaled to project scope
• 2. Submittal: filed through the city portal (SJePermits, Sunnyvale One-Stop, etc.) with plan-check fees paid
• 3. Plan check: reviewers across building, planning/zoning, and sometimes fire/public works examine the set
• 4. Issuance: corrections resolved → permit issued → construction may legally begin
• 5. Inspections: staged sign-offs during construction, ending in a final that closes the permit

What plan checkers actually look for

Building reviewers verify code compliance: structural adequacy, egress, fire-safety, electrical/plumbing/mechanical design, and energy code (Title 24 — the most commonly botched section in owner submittals). Planning reviewers verify zoning: setbacks, height, lot coverage, FAR. The two reviews are different disciplines with different checklists, and a submittal that satisfies one while ignoring the other still bounces. Professional packages are annotated to both checklists before filing — that's the entire trick.

The correction cycle: where months hide

Almost no submittal is approved untouched; reviewers issue correction lists and the clock restarts with each round — typically 3–6 weeks per cycle. The arithmetic is merciless: a clean package clearing in one round takes six weeks; a thin package needing four rounds takes five months for the identical project. This is why 'the city is slow' is usually a misdiagnosis. The city is the city; the variable is the submittal. Our packages average one to two rounds because they're built against each city's checklist, and our correction responses file within days, not the customary weeks.

Inspections: construction's checkpoints

Issued permits come with an inspection sequence — foundation, underfloor, rough plumbing/electrical/mechanical, framing, insulation, drywall, and final, scaled to scope. Each must pass before the next phase covers the work. Failed inspections aren't catastrophes (corrections and re-inspection are routine) but they are schedule events, which is why contractors who pre-walk their own work before calling inspectors finish faster. The final inspection closes the permit — the document trail that protects your resale value, your insurance position, and your appraisal square footage.

What it costs and who does what

Fees scale with project valuation: roughly $1.5K–$5K for kitchens and baths, $8K–$20K+ for additions and ADUs once plan check, permit, and program fees stack (school fees apply to additions over 500 sq ft; ADUs under 750 sq ft are impact-fee-exempt statewide). As for who does what: your design-build contractor should produce the plans, file the application, attend to corrections, and schedule every inspection. If you're being handed that job as the homeowner, you've hired a crew, not a contractor.

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