Renovation work involving structural changes, electrical, plumbing, or mechanical modifications requires a building permit in Santa Clara County. Cosmetic work does not. ADU conversions follow streamlined state permitting requirements.
Santa Clara County requires building permits for: structural modifications, electrical work, plumbing changes, HVAC modifications, window/door size changes, roofing, room additions, and garage conversions. Cosmetic work not requiring a permit includes painting, flooring, cabinet installation, and minor repairs. California's ADU laws (AB 68, SB 13) streamline permitting for accessory dwelling unit construction and conversions. Plan review typically takes 2-4 weeks for residential projects. In hillside areas, additional geotechnical and grading requirements may apply. Historic properties may require additional review.
Unpermitted work results in code enforcement action, potential fines, requirement to open finished work for inspection, and retroactive permits at increased fees.
Sunnyvale, CA
Sunnyvale permits construction noise Monday through Friday from 7 AM to 6 PM and Saturday 8 AM to 5 PM. No construction on Sundays or major holidays without ...
Sunnyvale, CA
Sunnyvale was one of the earliest California cities to ban gas-powered leaf blowers, ahead of statewide AB 1346. Only electric or battery blowers are allowed...
Sunnyvale, CA
Aircraft noise from Moffett Federal Airfield, NASA Ames, and San Jose International is preempted by federal FAA rules. Sunnyvale cannot regulate overflight n...
Sunnyvale, CA
Street parking in Sunnyvale is governed by SMC Title 10 and California Vehicle Code. The 72-hour rule (CVC 22651(k)) applies, and posted permit zones restric...
Sunnyvale, CA
Sunnyvale driveway construction and use are governed by SMC Title 19 zoning and Title 16 encroachment rules. Blocking sidewalks or the public right-of-way is...
Sunnyvale, CA
RVs, trailers, and boats over 6 feet tall or 22 feet long are restricted on Sunnyvale streets under SMC Title 10. Short-term loading is allowed with limits; ...
Side-by-side rule comparisons with other cities in Santa Clara County.
See how Sunnyvale's renovation permits rules stack up against other locations.
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