Seattle does not regulate residential inflatable holiday decorations by size or type. Standard Noise Ordinance (SMC 25.08) limits apply to blower-motor noise, the Outdoor Lighting Code (SMC 23.86.013) covers light trespass, and HOAs are the most common source of enforcement. Outdoor electrical connections require GFCI protection under Seattle Electrical Code 210.8.
SMC contains no ordinance regulating inflatable holiday displays. Continuous-run blower motors are subject to SMC 25.08.410 — residential limits of 55 dBA daytime / 45 dBA night measured at the property line. Inflatables placed on private property are not classified as 'signs' under SMC 23.55 unless they contain commercial messaging. Seattle Electrical Code Section 210.8 (adopted with amendments from NEC 2020) requires GFCI protection on all 120-volt outdoor outlets used for holiday displays. Lighted inflatables visible from adjoining residential property fall under SMC 23.86.013 light-trespass standards (0.1 foot-candles max at property line). Cold-air inflatables are not fire-rated structures and do not require fire-code permits. Some HOA CC&Rs cap inflatable height (commonly 8 ft) and require removal within 30 days of the holiday.
Noise penalties from continuously running blowers: $150 first offense, $500 subsequent per SMC 25.08.515. Light-trespass abatement orders under SMC 23.90. No city-imposed inflatable-specific fines exist; enforcement is largely through HOAs and nuisance complaints.
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