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§ 02
When a permit is required
Permit triggers and exempt work for Walla Walla County
Building permits are required for new construction, additions, alterations, remodels, relocations of structures, change of use, mechanical permits, plumbing permits, signage, grading, and other structural work.
Residential accessory storage structures (sheds): exempt only if detached, on same lot as existing single-family dwelling, non-habitable, maximum 200 sq ft, maximum wall height 10 feet, minimum 6 feet from other structures, no heat/plumbing/mechanical systems, not in floodplain/critical areas/shoreline areas
Fences up to 7 feet high (zoning approval may still be required)
Retaining walls up to 4 feet (without surcharge)
Water tanks: on grade, maximum 5,000 gallons, height not exceeding 2x width or diameter
Decks, sidewalks, ramps, driveways: no roof cover, maximum 30 inches above grade
Interior finish work (painting, flooring, cabinets, countertops)
Prefabricated pools under 24 inches deep
Playground equipment for single-family homes
Window awnings up to 54 inches projection (without additional structural support)
Siding repair/replacement (non-fire-resistive areas)
Insulation retrofits with no structural changes
Door and window replacement (like-for-like; does not apply to egress bedroom windows)
Re-roofing (shingles only; not applicable in wildfire hazard zones requiring fire-resistive roofing)
- Exempt Residential accessory storage structures (sheds): exempt only if detached, on same lot as existing single-family dwelling, non-habitable, maximum 200 sq ft, maximum wall height 10 feet, minimum 6 feet from other structures, no heat/plumbing/mechanical systems, not in floodplain/critical areas/shoreline areas
- Exempt Fences up to 7 feet high (zoning approval may still be required)
- Exempt Retaining walls up to 4 feet (without surcharge)
- Exempt Water tanks: on grade, maximum 5,000 gallons, height not exceeding 2x width or diameter
- Exempt Decks, sidewalks, ramps, driveways: no roof cover, maximum 30 inches above grade
- Exempt Interior finish work (painting, flooring, cabinets, countertops)
- Exempt Prefabricated pools under 24 inches deep
- Exempt Playground equipment for single-family homes
- Exempt Window awnings up to 54 inches projection (without additional structural support)
- Exempt Siding repair/replacement (non-fire-resistive areas)
- Exempt Insulation retrofits with no structural changes
- Exempt Door and window replacement (like-for-like; does not apply to egress bedroom windows)
- Exempt Re-roofing (shingles only; not applicable in wildfire hazard zones requiring fire-resistive roofing)
Note: Exemptions do not apply to electrical, plumbing, or mechanical work—separate permits required for those systems. Even if a building permit is exempt, other county approvals (land use, zoning, critical areas, shoreline, SEPA) may still apply. Agricultural structures: tractor/farm equipment storage and agricultural product storage are explicitly excluded from the shed exemption. Agricultural buildings generally require permits even when modest in size. Confirm exemption eligibility with county before proceeding.
Required documents
- Completed building permit application with all owner/representative signatures
- Construction plans drawn to scale on 11 inch x 17 inch minimum paper
- Site plan showing parcel number, legal description, street address, and location of proposed work
- Truss and beam specifications where applicable
- Calculations and footings sized for structural loads
- Energy Code compliance forms
- Any required engineering or calculations
- SEPA environmental checklist (if applicable for projects above threshold)
- Building code
- 2021 IBC with Washington State amendments (effective January 17, 2024 for county fees; state-effective March 15, 2024 for building code)
- Permit validity
- Permits must be activated and inspections scheduled within applicable timeframes. Approved inspection required at least every 180 calendar days to demonstrate substantial progress.
- Owner-builder
- Owner-builders must comply with all permit requirements and code standards.
- Contractor requirements
- Contractors must hold a valid Washington State contractor registration with L&I.
§ 03
Application process
Typical processing: Up to 45 days for initial plan review; most projects completed sooner. Resubmittals vary by scope.
- 01 Use the Complete Application Guide on the county website to determine which forms and supplemental materials are required for your project type.
- 02 Prepare the application package: completed application with all property owner or project representative signatures, one full set of construction plans (11 inch x 17 inch minimum, drawn to scale, including site plan), energy code compliance documentation, engineering where required, and all applicable supplemental materials.
- 03 Submit via eTRAKiT portal (for eligible permit types), email to permits@wwcowa.gov, postal mail, or in-person drop-box at 310 W. Poplar Street, Suite 200.
- 04 Pay the $75 application fee plus the estimated plan review fee (65 percent of building permit fee) to initiate formal review.
- 05 Application undergoes completeness review; planning approvals may be required before building review begins for some project types.
- 06 Plans Examiner reviews for code compliance; review process up to 45 days (most completed sooner).
- 07 Respond to any plan review correction comments.
- 08 Permit issued upon approval; post permit and approved plans on site during construction.
- 09 Schedule required inspections through eTRAKiT portal or by calling (509) 524-2611.
Typical processing time: Up to 45 days for initial plan review; most projects completed sooner. Resubmittals vary by scope.
§ 04
Fee schedule
Effective January 17, 2024
Fee type
Amount
01
Minimum permit fee
$75 application fee at submission
02
Plan check fee
65 percent of building permit fee, due at time of application submission
03
Permit fee formula
Building permit fees calculated based on project type, size (square footage), occupancy type, and construction type using ICC valuation table
04
Trade permit fee
Included in standard permit valuation based on ICC table
05
Reinspection fee
Applies if work not ready or corrections unresolved; amount per county fee schedule
06
Penalty (no permit)
Investigation fee assessed equal to the permit fee for work commenced without a permit (in addition to regular permit fee)
Permit fees paid on permit issuance; plan review fees paid at application. Contact (509) 524-2610 or permits@wwcowa.gov for fee estimates by project type. Fee schedule available on county website.
Fees change periodically. Confirm at the official fee schedule ↗ (effective January 17, 2024) before budgeting.
§ 05
Required inspections
Scheduling and sequence
How to schedule
- eTRAKiT Web Portal (online)
- Inspection Scheduling: (509) 524-2611 (phone)
- Scheduling deadline
- Schedule inspections through eTRAKiT or by phone; approved construction plans and permit must be on site
- Inspection hours
- Monday–Friday, 10:00 AM to 3:00 PM (in-person counter); appointments available outside these hours
- Time windows
- Standard business hours with scheduled appointment availability
Typical sequence: Typical sequence: Footing/Foundation (foundation elevation verification required for flood zone properties), Under-slab plumbing (where applicable), Framing (lowest floor elevation verification required for flood zone properties), Plumbing rough-in, Mechanical rough-in (ductwork before covering), Insulation, Final inspection (required before occupancy; Certificate of Occupancy issued upon approval). Approved inspection required at least every 180 calendar days to demonstrate substantial progress.
Contact county for details on remote inspection availability.
§ 06
Frequently asked
Common questions about unincorporated Walla Walla County permits
01 Do I need a building permit in unincorporated Walla Walla County, WA? ▸
Building permits are required for new construction, additions, alterations, remodels, relocations of structures, change of use, mechanical permits, plumbing permits, signage, grading, and other structural work.
02 How much does a building permit cost in unincorporated Walla Walla County, WA? ▸
Building permit fees in unincorporated Walla Walla County, WA are set by the local building department and vary by project type and valuation. The minimum permit fee is $75 application fee at submission. Fees are calculated as: Building permit fees calculated based on project type, size (square footage), occupancy type, and construction type using ICC valuation table. Plan check fee: 65 percent of building permit fee, due at time of application submission.
03 How do I apply for a building permit in unincorporated Walla Walla County, WA? ▸
To apply for a building permit in unincorporated Walla Walla County, WA, follow these steps: 1. Use the Complete Application Guide on the county website to determine which forms and supplemental materials are required for your project type. 2. Prepare the application package: completed application with all property owner or project representative signatures, one full set of construction plans (11 inch x 17 inch minimum, drawn to scale, including site plan), energy code compliance documentation, engineering where required, and all applicable supplemental materials. 3. Submit via eTRAKiT portal (for eligible permit types), email to permits@wwcowa.gov, postal mail, or in-person drop-box at 310 W. Poplar Street, Suite 200. 4. Pay the $75 application fee plus the estimated plan review fee (65 percent of building permit fee) to initiate formal review. 5. Application undergoes completeness review; planning approvals may be required before building review begins for some project types. 6. Plans Examiner reviews for code compliance; review process up to 45 days (most completed sooner). 7. Respond to any plan review correction comments. 8. Permit issued upon approval; post permit and approved plans on site during construction. 9. Schedule required inspections through eTRAKiT portal or by calling (509) 524-2611.
04 How long does it take to get a building permit in unincorporated Walla Walla County, WA? ▸
Building permit processing times in unincorporated Walla Walla County, WA typically run Up to 45 days for initial plan review; most projects completed sooner. Resubmittals vary by scope.. Timelines can vary based on project complexity and current department workload.
05 What work is exempt from building permits in unincorporated Walla Walla County, WA? ▸
Not all construction work requires a permit in unincorporated Walla Walla County, WA. The following work is generally exempt: Residential accessory storage structures (sheds): exempt only if detached, on same lot as existing single-family dwelling, non-habitable, maximum 200 sq ft, maximum wall height 10 feet, minimum 6 feet from other structures, no heat/plumbing/mechanical systems, not in floodplain/critical areas/shoreline areas; Fences up to 7 feet high (zoning approval may still be required); Retaining walls up to 4 feet (without surcharge); Water tanks: on grade, maximum 5,000 gallons, height not exceeding 2x width or diameter; Decks, sidewalks, ramps, driveways: no roof cover, maximum 30 inches above grade; Interior finish work (painting, flooring, cabinets, countertops); Prefabricated pools under 24 inches deep; Playground equipment for single-family homes; Window awnings up to 54 inches projection (without additional structural support); Siding repair/replacement (non-fire-resistive areas); Insulation retrofits with no structural changes; Door and window replacement (like-for-like; does not apply to egress bedroom windows); Re-roofing (shingles only; not applicable in wildfire hazard zones requiring fire-resistive roofing). Note: Exemptions do not apply to electrical, plumbing, or mechanical work—separate permits required for those systems. Even if a building permit is exempt, other county approvals (land use, zoning, critical areas, shoreline, SEPA) may still apply. Agricultural structures: tractor/farm equipment storage and agricultural product storage are explicitly excluded from the shed exemption. Agricultural buildings generally require permits even when modest in size. Confirm exemption eligibility with county before proceeding. When in doubt, confirm with the local building department before starting work.
06 How do I schedule a building inspection in unincorporated Walla Walla County, WA? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Walla Walla County, WA via: eTRAKiT Web Portal, Inspection Scheduling: (509) 524-2611. Schedule inspections through eTRAKiT or by phone; approved construction plans and permit must be on site.
last verified April 2026
source Community Development — Building Division ↗
entry id permits/washington/walla-walla/unincorporated
Educational reference. Permit rules and fees change — confirm current requirements directly with Community Development — Building Division before applying. Jaspector is not legal advice.