rooftop solar (PV) permit requirements across 10 verified Seattle-area cities
Side-by-side: which of Seattle, Bellevue, Kirkland, Redmond, Sammamish, Issaquah, Renton, Kent, Federal Way, and Mercer Island require a permit for a rooftop solar (PV), what triggers one, what it costs, and how long review takes. Verified against each city's own page; sources cited per row.
10 of 10 cities have authoritative rules on file · 10 typically require a permit · 0 often do not.
King County
| Jurisdiction | Permit? | Threshold | Fee | Review days | Source |
|---|---|---|---|---|---|
City of Bellevue city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
City of Federal Way city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
City of Issaquah city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
City of Kent city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
City of Kirkland city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
City of Mercer Island city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
City of Redmond city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
City of Renton city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
City of Sammamish city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
City of Seattle city | Yes | Building + electrical permits required for any grid-tied rooftop PV. Structural review triggered when panel + racking dead load exceeds 5 psf added to existing rated roof load. IFC 605: 3 ft setback from ridges / valleys / eaves; 36 in clear ridge path unless alternative compliance pathway approved. | Building + electrical permits priced per valuation. RCW 64.38 prohibits HOA from blocking residential solar. | 5–25 days | Cite verified 2026-05-13 |
How this table is built
Each row reflects the most-recently-verified authoritative rule on file for that jurisdiction and project type. “Pending verification” means we have the jurisdiction in our database but haven't yet personally checked the city page for rooftop solar (PV) rules — those rows fall back to county or WA-state baselines until verified. Sources link directly to the city or county page we read on the verified-on date. See our data-quality leaderboard for how we keep these current.