Home Business in Cowlitz County, WA (2026)
3 rules for unincorporated Cowlitz County, Washington.
Verified from official government sources
Zoning & Home Occupation Permits
CCC § 18.10.552 lets residents run a home occupation in unincorporated Cowlitz County without a special use permit if it stays incidental to the dwelling, keeps the home looking residential, is run only by residents plus up to two employees, and does not spill goods, noise or parking onto the neighborhood.
Cowlitz County Home Occupation Standards
Some RestrictionsCowlitz County Code § 18.10.552(B)
B. All home occupations shall comply with the following standards: 1. The home occupation shall be clearly incidental and secondary to the use of the dwelling for dwelling purposes; ... 4. ... Only the occupant(s) of the dwelling on the lot on which the home occupation is conducted may engage in such home occupation; provided, that such occupant(s) may employ no more than two nonresident employ...
Signage Rules
A home occupation in unincorporated Cowlitz County can post one sign at the house and one more near the road, but CCC § 18.10.552(B)(8) caps each sign at three square feet and bars any animation or illumination, keeping home-business signage far smaller than the AG-I zone's separate commercial sign rules.
Cowlitz County Home Business Sign Limits
Light RestrictionsCowlitz County Code § 18.10.552(B)(8)
8. One nonanimated, nonilluminated sign, not exceeding three square feet in area, may be mounted on the home occupation structure and one such sign may be installed near the adjacent road frontage.
Home Daycare
Licensed family day care providers get special treatment under CCC § 18.10.552. Unlike other home occupations in unincorporated Cowlitz County, a licensed day care is a permitted home occupation in every zoning district without a special use permit, and it is exempt from the rule confining a home business to the dwelling and from the 25 percent floor space cap.
Cowlitz County Home Day Care Zoning
Few RestrictionsCowlitz County Code § 18.10.552(A)(2)
§ 18.10.552. Home occupations. A. The following occupations, when conducted in compliance with the standards set forth in subsection B of this section, shall be permitted as home occupations in all land use districts and shall not be required to obtain special use permit approval: ... 2. ... Licensed family day care providers as defined in RCW 43.216.010(1)(c), or hereafter amended. ... 3. ... ...
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