Solar Energy in Walla Walla County, WA (2026)
1 rule for unincorporated Walla Walla County, Washington.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Walla Walla County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Panel Permits
Installing a residential solar array in unincorporated Walla Walla County requires a Community Development building permit under the state energy code adopted at Code § 15.04.030. A ground-mounted array costs $75 to apply plus a $205 permit fee; a roof-mounted array costs $75 plus $155, both with plan review and $80 per inspection after the first two.
Walla Walla County Solar Panel Permit Fees
Some RestrictionsWalla Walla County Code §§ 3.08.220, 15.04.030
Solar array, residential, ground mounted $75.00 application fee + $205.00 permit fee + plan review fee + $80.00 per inspection after first two Solar array, residential, roof mounted $75.00 application fee + $155.00 permit fee + plan review fee + $80.00 per inspection after first two ... There is adopted by the county of Walla Walla, state of Washington, the State Building Code, state of Washing...
All Walla Walla County ordinances
See every category we cover for Walla Walla County: parking, noise, fences, fires, animals, pools, and more.
Walla Walla County Ordinance Hub →