Roof Replacement Permit in King County, Washington
No permit needed
No permit is typically required
Replacement of roofing or siding on a detached one or two-family house in unincorporated King County does not require a building permit
Issued byKing County Department of Local Services Permitting Division
By Mario Bailey, verified against official sources
Quick answer
Replacement of roofing or siding on a detached one or two-family house does not require a building permit in unincorporated King County. This exemption applies to like-for-like replacement and may not apply to structural changes or re-roofing on other structure types. These rules apply to unincorporated King County only; incorporated cities such as Seattle have their own requirements.
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When a permit is usually needed
Replacement of roofing or siding on a detached one or two-family house in unincorporated King County does not require a building permit
What a roof replacement permit costs in King County
How King County compares in Washington
| Jurisdiction | Permit needed? | Threshold |
|---|---|---|
| Bellevue | It depends | permit required when modifying or replacing the roof sheathing or making structural changes; simple shingle replacement may not require a permit |
| Clark County | Permit required | Re-roofing permits are required for all buildings in Clark County; a separate permit may be required if structural work such as replacing roof sheathing is necessary. |
| King Countythis page | No permit needed | Not specified |
| Pierce County | It depends | Re-roofing of a Group R, Division 3 one or two family dwelling, or a Group U private garage, carport, or accessory structure, with a roof slope greater than 2:12, is exempt if the total load of all roof coverings does not exceed 7.5 lbs per sq ft; the exemption does not apply to vegetated roofs or to replacement of roof sheathing. |
| Seattle | No permit needed | Not specified |
| Snohomish County | It depends | re-roof overlay or tear-off-and-replace of a residential roof exempt if limited to 2 total layers of roofing material, uses the same type of roofing material as the existing roof, and the roof sheathing is not removed or replaced; adding a layer beyond 2, changing material type, or replacing sheathing requires a permit |
| Tacoma | It depends | removing and replacing existing roof coverings with the same type does not require a permit; adding a layer or changing roofing materials requires a permit and pre-roof inspection |
How to apply in King County
In King County, a residential reroof permit application is lighter than for structural work: you state whether the scope is a full tear-off (roof replacement) or an overlay (roof recover), describe the covering material and its manufacturer instructions, and note the condition of the existing deck, since those facts determine which code path applies.
What most roof replacement permit applications include:
- State on the application whether the job is a roof replacement, which strips all existing layers down to the bare deck, or a roof recover, which leaves the old covering in place under specific conditions, since the two scopes are governed differently (IRC R908.3).
- For King County, a recover is only an option where the new covering follows the roof covering manufacturer's approved instructions or is a self-supporting system, such as standing-seam metal, that does not rely on the existing roof for support (IRC R908.3.1).
- Full tear-off must be scoped on the application instead of a recover when the existing roof is water soaked or deteriorated, is slate, clay, cement, or asbestos-cement tile, or already carries two or more layers of roof covering (IRC R908.3.1.1).
- For King County, the materials and installation methods described on the application must comply with the reroofing requirements of the roof-assemblies chapter (IRC R908.1).
- If the scope reuses existing slate, clay, or cement tile, damaged or broken pieces cannot be listed for reinstallation, and any rusted or deteriorated flashings, edgings, outlets, or vents uncovered during tear-off must be scoped for replacement (IRC R908.5).
General submittal guidance from IRC Section R908 Reroofing (text as adopted in the 2020 Residential Code of New York State, based on the 2018 IRC). Source. King County Department of Local Services Permitting Division sets the exact checklist for King County.
Where to apply in King County:
King County Department of Local Services Permitting Division
- 919 SW Grady Way Suite 300, Renton, WA 98057
- Phone: (206) 296-6600
- Email: PermitQuestions@kingcounty.gov
Roof Replacement Permit in King County compared with nearby Washington localities
| Locality | Permit needed? | Threshold | What each Washington schedule says | Verified |
|---|---|---|---|---|
| King County | No permit needed | Not specified | Most permit fees increased approximately 14% on January 1 2026 plus a $126 application... | |
| Bellevue | It depends | permit required when modifying or replacing the roof sheathing or making structural changes; simple shingle replacement may not require a permit | Flat Re-roof Permit inspection fee of $290 due at issuance per Table 5 of Ordinance... | |
| Clark County | Permit required | Re-roofing permits are required for all buildings in Clark County; a separate permit may be required if structural work such as replacing roof sheathing is necessary. | County handout rev 7.16.18: residential re-roofing permit $220 plus $94 issuance and... | |
| Pierce County | It depends | Re-roofing of a Group R, Division 3 one or two family dwelling, or a Group U private garage, carport, or accessory structure, with a roof slope greater than 2:12, is exempt if the total load of all roof coverings does not exceed 7.5 lbs per sq ft; the exemption does not apply to vegetated roofs or to replacement of roof sheathing. | Building permit fee follows PCC Table 17C.10-1-B (valuation based): $69.00 for... | |
| Seattle | No permit needed | Not specified | One and two family homes need no permit for a straight reroof that does not change the... |
Inspections and closing out your permit
In King County, most residential reroofs get two to three field inspections keyed to the scope of work: a deck or nailing check when sheathing is exposed or replaced, a final on the completed covering and flashings, and in some high-wind regions a dedicated check of mitigation measures added during tear-off.
- In King County: where the covering is fully removed and the sheathing is exposed, replaced, or added, inspectors check the deck and its nailing before any new roofing goes down, since the structural framework must be able to carry the new covering's loads (IRC R908.2).
- In King County: an overlay is only approved where it meets one of the code's listed recover conditions, such as installation in accordance with the covering manufacturer's approved instructions (IRC R908.3.1).
- In King County: flashings disturbed or replaced during the job are checked against the approved manufacturer's installation instructions, and metal flashing that will receive bituminous material must be primed before installation (IRC R908.6).
- In King County: a final inspection confirms the completed roof covering and its fasteners were installed as required for that material and per manufacturer instructions before the permit is closed (IRC R905).
- In King County: in some regions with strengthened wind provisions, reroofing an older single-family home also triggers inspection of supplemental deck-nailing and a secondary water barrier added during tear-off, on top of the base reroofing requirements (Florida Building Code, Residential R908.7 Mitigation).
- In King County: reinstalled existing slate, clay, or cement tile is checked against reuse limits at inspection, and any rusted, damaged, or deteriorated flashings, edgings, outlets, or vents found during tear-off must be replaced rather than reinstalled (IRC R908.5).
Schedule each inspection in advance and pass the final before you use the work or close the permit. Request inspections through the King County permit portal or by phone at (206) 296-6600.
Inspection sequence from IRC Section R908 Reroofing and Section R905 Roof Coverings (2021 International Residential Code). Source. An open permit left un-inspected can surface later in a title search or home sale.
Your Roof Replacement Permit checklist for King County
- Confirm the requirement. No permit is typically required. Usually needed: Replacement of roofing or siding on a detached one or two-family house in unincorporated King County does not require a building permit.
- Budget the fee. Most permit fees increased approximately 14% on January 1 2026 plus a $126 application screening fee. Official fee schedule.
- Apply. In King County, a residential reroof permit application is lighter than for structural work: you state whether the scope is a full tear-off (roof replacement) or an overlay (roof recover), describe the covering material and its manufacturer instructions, and note the condition of the existing deck, since those facts determine which code path applies. Start at the King County permit portal.
- Keep the office details handy. King County Department of Local Services Permitting Division. Phone: (206) 296-6600. Address: 919 SW Grady Way Suite 300, Renton, WA 98057.
- Plan for inspections. In King County, most residential reroofs get two to three field inspections keyed to the scope of work: a deck or nailing check when sheathing is exposed or replaced, a final on the completed covering and flashings, and in some high-wind regions a dedicated check of mitigation measures added during tear-off.
Compiled from the official sources on this page. Last checked .
Permitting activity in King County
In 2024, King County authorized permits for 10,564 new residential housing units (2,352 single-family, 8,212 in multi-family buildings), valued at $2.7B, down from 10,601 the year before. That works out to about 4.5 permits per 1,000 residents.
Source: U.S. Census Bureau, Building Permits Survey, 2024 annual data · population 2,340,211.
About King County
King County has about 988,330 housing units. The median home is valued at $811,200, against a median household income of $122,148. About 56% of homes are owner-occupied, and the typical home was built around 1983.
Source: U.S. Census Bureau, American Community Survey 2023 5-year.
Frequently asked questions
- Do you need a roof replacement permit in King County?
- Replacement of roofing or siding on a detached one or two-family house does not require a building permit in unincorporated King County. This exemption applies to like-for-like replacement and may not apply to structural changes or re-roofing on other structure types. These rules apply to unincorporated King County only; incorporated cities such as Seattle have their own requirements. Always confirm with the King County Department of Local Services Permitting Division before starting.
- How much does a roof replacement permit cost in King County?
- Most permit fees increased approximately 14% on January 1 2026 plus a $126 application screening fee. See the official fee schedule for current amounts.
- Where do you apply for a roof replacement permit in King County?
- You can apply through the King County permit portal or contact the King County Department of Local Services Permitting Division directly. The links are listed on this page.
- Can a homeowner pull a roof replacement permit themselves in King County?
- Under Washington law (RCW 18.27.090(11), (12); RCW 19.28.261(1); RCW 18.106.150(1)): Washington lets homeowners do their own construction work, including the licensed trades, on property they own. RCW 18.27.090(12) exempts any person working on his or her own property from contractor registration, but the exemption does not apply if you do contractor type work for the purpose of selling, demolishing, or leasing the property, and the separate owner exemption in RCW 18.27.090(11) is lost if you sell or lease improved property owned less than 12 months. For electrical work, RCW 19.28.261 lets you wire your own residence, farm, or place of business without an electrician license, unless the work is on construction of a new building intended for rent, sale, or lease, or on property offered for sale within 12 months after you obtained it. RCW 18.106.150(1) gives the same kind of exemption for plumbing work at your own residence, farm, or place of business. These exemptions waive the license, not the permit: an owner doing electrical work still buys an L&I electrical work permit and passes inspection (WAC 296-46B-901), and building and plumbing permits still come from your local building department. Confirm how King County applies this before you apply.
From the Library
What else needs a permit in King County
Every other permit type we have verified for this jurisdiction, with the rule that applies here.
| Project | Permit needed? | Threshold | Typical fee |
|---|---|---|---|
| Deck Permit | It depends | uncovered decks 30 inches or less above ground do not require a building permit in unincorporated King County; decks over 30 inches above grade require a permit | Most permit fees increased approximately 14% on January 1 2026 plus a $126 application... |
| Electrical Permit | Permit required | Not specified | Set by state L&I, not King County, under WAC 296-46B-906 (effective 7/1/2026): new... |
| Fence Permit | It depends | fences 6 feet or less do not require a building permit in unincorporated King County; fences over 6 feet require a permit | Most permit fees increased approximately 14% on January 1 2026 plus a $126 application... |
| HVAC Permit | Permit required | Not specified | Mechanical installation-only permit is a flat $183 inspection fee covering up to six... |
| Patio Permit | It depends | at-grade patios and uncovered decks 30 inches or less above ground are exempt; covered patios and taller structures require a building permit | No separate patio line |
| Plumbing Permit | Permit required | Not specified | Issued by Public Health Seattle and King County rather than the county Permitting Division |
| Pool Permit | It depends | prefabricated above-ground pools less than 24 inches deep and not exceeding 5000 gallons are exempt; all other pools require a building permit in unincorporated King County | Most permit fees increased approximately 14% on January 1 2026 plus a $126 application... |
| Shed Permit | It depends | storage sheds 200 sq ft or less as accessory to a residential house do not require a building permit in unincorporated King County; sheds over 200 sq ft require a permit | Most permit fees increased approximately 14% on January 1 2026 plus a $126 application... |
| Solar Permit | It depends | roof-mounted solar PV panels weighing less than 4 pounds per square foot on residences do not require a building permit; heavier installations require a permit | Most permit fees increased approximately 14% on January 1 2026 plus a $126 application... |
Roof Replacement Permit in other Washington localities
Everything above, sourced
Code references
National and state model-code sections the general guidance on this page is drawn from. They are not King County documents; the office above sets the local rules.
How this roof replacement permit page for King County was verified. 2 official sources: kingcounty.gov, kingcounty.gov; fee schedule: official document. Last checked by Mario Bailey, not confirmed with King County Department of Local Services Permitting Division. Rules change; confirm before you build. How we verify.
Last checked: Report an error on this page
Compare Roof Replacement Permit requirements across Washington localities
Permit office
King County Department of Local Services Permitting Division
(206) 296-6600Permit portalWashington rule changes