Roofing permit requirements across 16 Seattle-area cities
Side-by-side: which of Seattle, Bellevue, Kirkland, Redmond, Sammamish, Issaquah, Renton, Kent, Federal Way, Mercer Island, Shoreline, Tacoma, Lakewood, Puyallup, Everett, Lynnwood require a permit for a roofing, and what triggers one — each row quoted from the city's own code or permit page, with the source linked. Fees and review times appear where the city publishes them.
12 of 16 cities have authoritative rules on file · 5 always require a permit · 11 depend on the scope · 0 do not.
King County
| Jurisdiction | Permit? | Threshold | Fee | Review days | Source |
|---|---|---|---|---|---|
city | Depends on scope | Replacing roofing needs no permit; replacing sheathing or changing the framing does. A permit is required for roofing projects that include modifying or replacing the sheathing. | — | 1–5 days | Cite verified 2026-08-04 |
city | Always | The state code exempts no re-roofing: replacing a roof needs a permit unless the city's own code exempts it, as many do (like-for-like, no sheathing replaced). A small repair can be an ordinary repair. Under the state code (the 2021 IRC as adopted by WAC 51-51-003) R105.2 lists no exemption for re-roofing, so a re-roof needs a permit under R105.1 unless the city's own code exempts it; many cities exempt like-for-like re-roofing with no sheathing replaced. Re-roofing requirements themselves are in IRC R908. | — | — | Cite verified 2026-10-02 |
city | Depends on scope | In-kind re-roofing of a house needs no permit when the sheathing stays; replacing sheathing, changing the material, framing changes, skylights or rooftop units do. A permit is required for a re-roof involving structural elements — sheathing, skylights, change of roof pitch, adding/relocating mechanical units, or a roof-material change exceeding 10 lb/sq ft. In-kind re-roof without sheathing change, overlays ≤2 layers, and repairs <100 sq ft are exempt. | — | — | Cite verified 2026-05-29 |
city | Always | A re-roof needs a Minor Work permit. A re-roof permit (Minor Work) is required; state the materials being removed, the underlayment, and the new materials being installed. Typically processed within 2–3 business days. | — | 2–3 days | Cite verified 2026-05-29 |
city | Depends on scope | Same-type re-roofing of a house is exempt if the sheathing is untouched; an overlay is exempt up to two layers, except in a flood hazard area, a critical area or its buffer, or a wildland-urban interface (WUI) location. Replacing sheathing, structural work or a change of roofing material needs a permit. A re-roof tear-off-and-replace using the same type of roofing is exempt provided the roof sheathing is not altered; an overlay is exempt up to 2 total layers of roofing material. Changing roof sheathing, structure, or material type requires a permit. KMC 21.06.215(1)(H) exempts "In-kind reroofing of one- and two-family dwellings, provided the roof sheathing is not removed or replaced." None of this is exempt in a flood hazard area, a critical area or its buffer, or where the International Wildland-Urban Interface Code applies. KMC 21.06.215: "Permit exemptions shall not apply to areas of flood hazard or city land use critical areas and their required buffers, or locations subject to the construction requirements of the International Wildland-Urban Interface Code." | — | — | Cite verified 2026-05-29 |
city | Depends on scope | In-kind re-roofing of a house needs no permit when the sheathing stays, even in a critical or flood hazard area. Replacing sheathing, changing the roofing material, framing work, or a wildland-urban interface (WUI) location needs a permit. Permit required when: sheathing is replaced OR the type of roofing material is changed. Exempt: in-kind re-roofing of one- and two-family dwellings provided the roof sheathing is not removed or replaced. | — | — | Cite verified 2026-04-29 |
city | Depends on scope | Re-roofing with composition, metal or similar roofing under 4 lb per sq ft needs no permit; heavier roofing such as tile, or any sheathing or framing work, does. Lightweight re-roof coverings (composition or metal, installed unit weight less than 4 lb/sq ft) are exempt. Heavier coverings (e.g., tile) or work touching the sheathing/structure require a permit. | — | — | Cite verified 2026-05-29 |
city | Depends on scope | In-kind reroofing of a house or duplex needs no permit when no sheathing is removed or replaced, except in a flood hazard area or a critical area. Replacing sheathing, a different roofing material, framing changes or new skylights need a permit. In-kind re-roofing of one- and two-family dwellings is exempt provided the roof sheathing is not removed or replaced; otherwise a permit is required. | — | — | Cite verified 2026-05-29 |
city | Depends on scope | Reroofing a house in kind needs no permit if no sheathing is removed or replaced; replacing sheathing, changing the roofing material, or framing work does. Under the state code (the 2021 IRC as adopted by WAC 51-51-003) R105.2 lists no exemption for re-roofing, so a re-roof needs a permit under R105.1 unless the city's own code exempts it; many cities exempt like-for-like re-roofing with no sheathing replaced. Re-roofing requirements themselves are in IRC R908. | — | — | Cite verified 2026-10-02 |
city | Depends on scope | A roof recover or a like-for-like roof replacement needs no building permit in Seattle. Replacing any sheathing, changing the framing or pitch, or adding skylights or other changes to the building envelope needs one. In a special flood hazard area, or on a parcel with an environmentally critical area, even the exempt work needs floodplain development approval or the Director's approval of an exemption. Seattle Residential Code R105.2 lists as work exempt from a building permit: "11. Roof recover." and "12. Roof replacement if no changes are made to the building envelope other than adding or replacing insulation, and the work is equivalent to or better than the existing structure. Permits are required for structural changes and replacement of sheathing of any size." Energy Code R503.1.1, Exceptions 2 and 3, still set the insulation requirement where the roof cavity is exposed. | — | — | Cite verified 2026-09-16 |
city | Depends on scope | Re-roofing needs no permit when no structural element, including the roof sheathing, is revised; replacing sheathing or changing framing does. A re-roof permit is required; for routine re-roofing the City has standard specifications that, with a site plan, are accepted as the plans. Like-for-like material replacement is typically over-the-counter. | — | — | Cite verified 2026-05-17 |
Pierce County
| Jurisdiction | Permit? | Threshold | Fee | Review days | Source |
|---|---|---|---|---|---|
city | Always | Re-roofing needs a building permit in Lakewood (the City's Re-Roof permit type). Lakewood's Residential Applications Matrix lists Re-Roof as its own permit type, requiring an application and construction plans. | — | — | Cite verified 2026-04-29 |
city | Depends on scope | A re-roof that replaces sheathing needs a permit, issued over the counter. Permit required for re-roof requiring sheathing on a single-family residence and/or garage/structure over 200sqft. Re-roof of residential structure over 200sqft requiring sheathing is issued OVER-THE-COUNTER (same business day). | — | — | Cite verified 2026-04-29 |
city | Depends on scope | Reroofing a house or duplex needs no permit when the old roofing is torn off, the new roofing weighs 2.5 lb per sq ft or less (or is a vegetated roof of the previous roof's weight where a vegetated roof was permitted before), the framing is unchanged and the building is not unreinforced masonry. An overlay, heavier roofing or framing changes need a permit. Reroofing exempt only if ALL of: existing roof coverings removed prior, new material ≤2.5 psf (or vegetated roof same weight as previously-permitted vegetated roof), no roof framing changes, building NOT unreinforced masonry. Otherwise permit required. | — | 1–5 days | Cite verified 2026-04-29 |
Snohomish County
| Jurisdiction | Permit? | Threshold | Fee | Review days | Source |
|---|---|---|---|---|---|
city | Always | The state code exempts no re-roofing: replacing a roof needs a permit unless the city's own code exempts it, as many do (like-for-like, no sheathing replaced). A small repair can be an ordinary repair. Under the state code (the 2021 IRC as adopted by WAC 51-51-003) R105.2 lists no exemption for re-roofing, so a re-roof needs a permit under R105.1 unless the city's own code exempts it; many cities exempt like-for-like re-roofing with no sheathing replaced. Re-roofing requirements themselves are in IRC R908. | — | 1–5 days | Cite verified 2026-10-02 |
city | Always | The state code exempts no re-roofing: replacing a roof needs a permit unless the city's own code exempts it, as many do (like-for-like, no sheathing replaced). A small repair can be an ordinary repair. Under the state code (the 2021 IRC as adopted by WAC 51-51-003) R105.2 lists no exemption for re-roofing, so a re-roof needs a permit under R105.1 unless the city's own code exempts it; many cities exempt like-for-like re-roofing with no sheathing replaced. Re-roofing requirements themselves are in IRC R908. | — | — | Cite verified 2026-10-02 |
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 roofing 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.