Do I need a permit for HVAC work in
South Pasadena, California?

South Pasadena HVAC permits — the key details

South Pasadena Building Department requires a mechanical permit (not just electrical) for any HVAC installation, replacement, or modification that alters the capacity, efficiency, or configuration of the system. California Title 24 (2022 edition, adopted statewide) mandates that all replacement and new HVAC systems in residential buildings meet minimum efficiency standards (SEER2 13 for air conditioning, AFUE 95% for furnaces) and include proper refrigerant charge verification and duct-sealing documentation at final inspection. South Pasadena's local ordinance goes further: coastal properties (Zones A and B per the city zoning map, which includes most neighborhoods south of Monterey Road) must also comply with Title 24's coastal-region refrigerant regulations (non-ozone-depleting refrigerant, typically R-410A or R-32, with annual leak-check documentation). A simple furnace replacement — even if you're putting in an identical Lennox model to replace a failed unit — requires a permit application, submitted plans showing ductwork, refrigerant line sizing, and thermostat type, a plan-review fee ($300–$500), and a final mechanical inspection by the city's HVAC inspector (1-2 week turnaround). Homeowners are allowed to act as their own general contractor per California Business and Professions Code Section 7044, but the mechanical contractor performing the work must hold a current California license (B-HVAC, C-16 plumbing for ductless mini-split refrigerant lines, or C-20 HVAC for larger systems). Do-it-yourself HVAC installation by an unlicensed homeowner is prohibited in California and violates South Pasadena Building Code.