Most renovation work in San Bernardino County requires a building permit if it involves structural changes, electrical, plumbing, or mechanical work. Cosmetic work like painting, flooring, and countertops does not require a permit.
San Bernardino County requires building permits for: structural modifications (removing/adding walls, changing rooflines), electrical work beyond simple fixture replacement, plumbing modifications, HVAC system changes, window or door size changes, roofing replacement, room additions, and converting garages. Cosmetic work not requiring a permit includes painting, wallpapering, flooring replacement, cabinet installation, countertop replacement, and minor repairs. Permits are obtained through the county Building & Safety Division with plan review required for most projects. Review typically takes 2-4 weeks for residential projects. In fire-prone areas, additional requirements for fire-resistant materials may apply. ADU (Accessory Dwelling Unit) construction follows streamlined permitting under California state law.
Unpermitted work can result in stop-work orders, fines, requirement to open finished walls for inspection, and double permit fees for retroactive permits. Unpermitted work may also create issues when selling the property.
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See how San Bernardino County's renovation permits rules stack up against other locations.
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