Pierce County, WA Home Business: Zoning & Home Occupation Permits (2026)
Key Facts
- Code section
- PCC 18A.37.110
- Size cap
- 500 sq ft or 50 percent
- Allowed zones
- Urban and rural
- Outside storage
- Not allowed
Summary
Unincorporated Pierce County allows home occupations as an accessory use in urban and rural zones under Pierce County Code 18A.37.110, capping the activity at 500 square feet or 50 percent of the dwelling's living space, whichever is less, with no outside display or storage.
The home occupation shall be limited to an area not more than 500 square feet or a size equivalent to 50 percent of total floor area of the living space within the dwelling unit, whichever is less.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 2026-515, and legislation passed through May 26, 2026).
Full Breakdown
Pierce County Code Title 18A (Development Regulations - Zoning) governs home businesses in the unincorporated county. Under PCC 18A.37.110, a home occupation may be allowed in urban and rural zones subject to general standards - it must be incidental and secondary to the residence, performed entirely inside the dwelling or an accessory structure, and must not create noticeable glare, noise, odor, vibration, smoke, dust, or heat beyond the property lines. A basic home occupation is limited to 500 square feet or 50 percent of the living space, whichever is less, with no outside display or storage. Larger operations are Cottage Industry Level I or II, needing an Administrative Use or Conditional Use Permit.
Violations & Fines
Operating a home business beyond PCC 18A.37.110 - exceeding the floor-area cap, adding outside storage or display, or creating off-site nuisances - is a zoning violation. County code enforcement can issue notices of violation and civil penalties.
Frequently Asked Questions
Can I run a business from my home in unincorporated Pierce County?
What if my business is bigger?
Sources & Official References
Other rules in Pierce County
How Pierce County compares: Easiest Cities to Run a Home Business·Compare Pierce County to another location·View the Washington home business overview
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