Building Permits in Ontario, California
City in San Bernardino County
Verified August 2026
Adopted Construction Codes
These are the state-level code editions for California. They apply in Ontariounless a verified local adoption or amendment is noted — in local-adoption states, confirm the city or county's own code editions with the building department.
How much does a permit cost in Ontario? →
Published fee amounts by permit type, how Ontario calculates them, plan review and surcharges — quoted from the official fee schedule.
Permit checklists by project →
Deck, fence, shed, water heater and more — whether Ontario requires a permit, what to submit, which inspections it publishes, and what it charges. Every line quoted from a Ontario document.
Permit Requirements
building permit
Ontario specificsFees, required documents and the inspection sequence is available to BuildSpec members. Sign inStart free 14-day trial
electrical permit
Ontario specificsFees, required documents and the inspection sequence is available to BuildSpec members. Sign inStart free 14-day trial
fence permit
Ontario specificsFees, required documents and the inspection sequence is available to BuildSpec members. Sign inStart free 14-day trial
reroof permit
Ontario specificsFees, required documents and the inspection sequence is available to BuildSpec members. Sign inStart free 14-day trial
retaining wall permit
Ontario specificsFees, required documents and the inspection sequence is available to BuildSpec members. Sign inStart free 14-day trial
shed permit
Ontario specificsFees, required documents and the inspection sequence is available to BuildSpec members. Sign inStart free 14-day trial
water heater permit
Ontario specificsFees, required documents and the inspection sequence is available to BuildSpec members. Sign inStart free 14-day trial
Building Department
Permit fee schedule ↗ · fee schedule checked August 2026
Permit fee tables cover building, electrical, mechanical, plumbing, and grading; plan check fees are 80% of permit fees, plus valuation-based earthquake fees.
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