Pierce County, WA Solar Energy: Panel Permits (2026)

Pierce County treats a residential rooftop solar installation as a building permit item under Chapter 17C.10 PCC, the chapter that adopts and amends the International Building and Residential Codes for unincorporated areas. The fee schedule in PCC 17C.10.070 lists 'Residential Rooftop Solar Panel Installation' with a base fee of $173.00 in 2026 (rising to $190.00 in 2027), plus an additional charge of $201.00/$221.00 for systems up to 5 kW or $316.00/$348.00 for anything larger than 5 kW. The Building Official sets permit valuation using the ICC's 'Building Valuation Data' table under PCC 17C.10.070.A, and a reinspection triggered under PCC 17C.10.090 adds a further $152.00 in 2026 ($167.00 in 2027) under the reinspection fee table.

Once issued, a permit expires under PCC 18.150.060 and can only be reactivated at increasing cost: $115.00 within a year of expiration, $230.00 between one and two years, and $345.00 (doubling each year after) beyond that, all set out in PCC 17C.10.070. Homeowners who start solar work without a permit face an investigation fee under PCC 17C.10.080 equal to the permit fee, with a floor of $250.00 and a ceiling of $5,000.00, in addition to the standard permit charge once the work is legalized. Disputes over a Building Official's fee determination or plan rejection go to the Building Official first, then to the Hearing Examiner under PCC 17C.10.060, with a 14-day window to file and a written decision due within 30 days.