Roof Replacement Permit in Snohomish County, Washington
It depends
Sometimes, depending on the project
Before adding a roofing layer beyond the exempt limit, changing roofing material type, or replacing roof sheathing, in unincorporated Snohomish County
Issued bySnohomish County Planning and Development Services
By Mario Bailey, verified against official sources
Quick answer
In unincorporated Snohomish County reroofing a residential structure, whether an overlay or a tear-off and replace, does not require a building permit if it is limited to 2 total layers of roofing material, uses the same type of roofing material as what is being replaced, and the roof sheathing is not removed or replaced. A building permit is required if the work would exceed 2 layers, change the type of roofing material, or involve removing or replacing the sheathing.
Typical threshold: 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.
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When a permit is usually needed
Before adding a roofing layer beyond the exempt limit, changing roofing material type, or replacing roof sheathing, in unincorporated Snohomish County
What a roof replacement permit costs in Snohomish County
How Snohomish 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 County | 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 Countythis page | 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 |
Closest roof replacement permit thresholds outside Washington
Jurisdictions we cover whose limit sits nearest Snohomish County's 2 layers.
- Chandler, Arizona, Re-roofing with the same type of material as the existing roof, where the replacement covering classification is equal to or greater and does not increase structural loads, is exempt provided it does not exceed two layers over an existing roof; replacing with a different material, exceeding two layers, or increasing structural load requires a building permit.
How to apply in Snohomish County
In Snohomish 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 Snohomish 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 Snohomish 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. Snohomish County Planning and Development Services sets the exact checklist for Snohomish County.
Where to apply in Snohomish County:
Snohomish County Planning and Development Services
- 3000 Rockefeller Avenue, M/S 604, Everett, WA 98201
- Phone: 425-388-3311
- Email: epermittech@snoco.org
Roof Replacement Permit in Snohomish County compared with nearby Washington localities
| Locality | Permit needed? | Threshold | What each Washington schedule says | Verified |
|---|---|---|---|---|
| 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 | A like-for-like reroof limited to 2 layers with no sheathing removal needs no permit | |
| 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... | |
| King County | No permit needed | Not specified | Most permit fees increased approximately 14% on January 1 2026 plus a $126 application... | |
| 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... |
Inspections and closing out your permit
In Snohomish 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 Snohomish 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 Snohomish 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 Snohomish 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 Snohomish 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 Snohomish 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 Snohomish 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 Snohomish County permit portal or by phone at 425-388-3311.
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 Snohomish County
- Confirm the requirement. Sometimes, depending on the project. Typical threshold: 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. Usually needed: Before adding a roofing layer beyond the exempt limit, changing roofing material type, or replacing roof sheathing, in unincorporated Snohomish County.
- Budget the fee. A like-for-like reroof limited to 2 layers with no sheathing removal needs no permit; other reroofing is priced from the PDS valuation table starting at a $45 permit fee plus $29.25 plan check at the lowest valuation bracket, plus a $150 base fee per application, the $6.50 state surcharge and a 3% technology surcharge, per PDS Bulletin 18 effective 3/13/2026. Official fee schedule.
- Apply. In Snohomish 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 Snohomish County permit portal.
- Keep the office details handy. Snohomish County Planning and Development Services. Phone: 425-388-3311. Address: 3000 Rockefeller Avenue, M/S 604, Everett, WA 98201.
- Plan for inspections. In Snohomish 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 .
Frequently asked questions
- Do you need a roof replacement permit in Snohomish County?
- In unincorporated Snohomish County reroofing a residential structure, whether an overlay or a tear-off and replace, does not require a building permit if it is limited to 2 total layers of roofing material, uses the same type of roofing material as what is being replaced, and the roof sheathing is not removed or replaced. A building permit is required if the work would exceed 2 layers, change the type of roofing material, or involve removing or replacing the sheathing. 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. Always confirm with the office before starting.
- How much does a roof replacement permit cost in Snohomish County?
- A like-for-like reroof limited to 2 layers with no sheathing removal needs no permit; other reroofing is priced from the PDS valuation table starting at a $45 permit fee plus $29.25 plan check at the lowest valuation bracket, plus a $150 base fee per application, the $6.50 state surcharge and a 3% technology surcharge, per PDS Bulletin 18 effective 3/13/2026. See the official fee schedule for current amounts.
- Where do you apply for a roof replacement permit in Snohomish County?
- You can apply through the Snohomish County permit portal or contact the Snohomish County Planning and Development Services directly. The links are listed on this page.
- Can a homeowner pull a roof replacement permit themselves in Snohomish 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 Snohomish County applies this before you apply.
From the Library
What else needs a permit in Snohomish 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, deck steps, and uncovered porches for residential buildings exempt if 30 inches or less above adjacent grade at any point, not over a basement or story below, and not part of a required accessible route; covered or taller decks require a permit | Base application fee $150 per application plus 3% technology surcharge and $6.50... |
| Electrical Permit | Permit required | Not specified | No county fee |
| Fence Permit | It depends | fences 8 feet or less in height exempt, provided they have no masonry or concrete elements above 6 feet (wire strands atop an 8-foot fence are excluded from the height measurement); taller fences, or fences with masonry/concrete above 6 feet, require a permit | Base application fee $150 per application plus 3% technology surcharge and $6.50... |
| HVAC Permit | Permit required | Not specified | Filed as a Mech/Plbg residential trade permit priced from the PDS valuation table... |
| Patio Permit | It depends | open at-grade patios are treated as exempt sidewalks and driveways under SCC 30.50.103(1)(e) with no size limit; freestanding patio covers (roofed, not attached to another structure) are exempt only if 200 sq ft or less inside the UGA or 400 sq ft or less outside the UGA; larger or attached patio covers require a permit | Priced from the PDS valuation table starting at a $45 permit fee plus $29.25 plan check... |
| Plumbing Permit | Permit required | Not specified | Filed as a Mech/Plbg residential trade permit priced from the PDS valuation table... |
| Pool Permit | It depends | prefabricated swimming pools regulated under the IRC (one- and two-family dwellings) exempt if less than 24 inches deep, with no gallon-volume cap; in-ground pools or pools 24 inches deep or more require a building permit | Priced from the PDS valuation table starting at a $45 permit fee plus $29.25 plan check... |
| Shed Permit | It depends | one-story detached accessory structure not used for human habitation (tool/storage shed, playhouse) exempt if floor area is 200 sq ft or less and sidewalls 9 ft or less inside the Urban Growth Area (UGA), or 400 sq ft or less and sidewalls 11 ft or less outside the UGA; larger structures require a building permit | Base application fee $150 per application plus 3% technology surcharge and $6.50... |
| Solar Permit | It depends | ground-mounted residential solar PV systems never need a building or mechanical permit; roof-mounted residential PV on a detached single-family house is exempt from a building/mechanical permit only if total dead load is 3.5 lbs per sq ft or less (up to 4.5 lbs per sq ft for frameless panels on a 3:12 or steeper slope, or 5 lbs per sq ft for frameless panels on a 5:12 or steeper slope), panels are mounted 18 inches or less above the roof surface, and an electrical permit has already been issued; a separate electrical permit through WA L&I is always required regardless | Ground-mounted and qualifying roof-mounted residential solar PV need no county building... |
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 Snohomish County documents; the office above sets the local rules.
How this roof replacement permit page for Snohomish County was verified. 2 official sources: snohomish.county.codes, snohomishcountywa.gov; fee schedule: official document. Last checked by Mario Bailey, not confirmed with Snohomish County Planning and Development Services. 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
Washington rule changes