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Multnomah County, OR Home Business: Signage Rules (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Type A home occupation signage
None allowed at all
Type B home occupation signage
One sign, 2 sq ft max
Type B sign type
Non-illuminated only
Fine range
$45-$3,500 per day
Applies to
Unincorporated county only

Summary

Unincorporated Multnomah County bars any signage for a registered Type A home occupation, while a Type B home occupation may post one non-illuminated ID sign up to 2 square feet.

City-specific rules exist: Gresham has its own signage rules rules that differ from Multnomah County's county-level regulations. If you live in Gresham, check the city-specific page instead.

(6) No signage shall be allowed, including temporary signage and those exempted under MCC 39.6720 with the exception of property numbers. ... Notwithstanding MCC 39.6700 – 39.6820, only one, non-illuminated, identification sign not to exceed two square feet in area may be attached to a building used for the business.

Source: Municode LibraryView official code

Full Breakdown

The county's zoning code treats home business signage differently by permit type. A Type A home occupation, the lighter registration-only track, allows no signage at all, including temporary signs and signs otherwise exempt under MCC 39.6720, except property numbers. A Type B home occupation, which requires an approved land-use permit, may attach one non-illuminated identification sign of up to two square feet to the building housing the business, overriding the general sign standards in MCC 39.6700-39.6820. This applies only to unincorporated county land; Portland, Gresham, Troutdale, Fairview and Wood Village enforce their own municipal sign codes.

Violations & Fines

Zoning violations are cited under MCC 39.1510 with a Notice of Violation; fines run from $45 to $3,500 per day of noncompliance, set by the Planning Director and enforceable through a lien on the property.

Frequently Asked Questions

Can I put up a business sign for a Type A home occupation in Multnomah County?
No. MCC 39.8800(A)(6) prohibits all signage, including temporary signs, except property numbers.
What size sign can a Type B home occupation have?
One non-illuminated identification sign up to 2 square feet attached to the building, per MCC 39.8850(A)(6).
Does this rule apply inside Portland?
No. Portland has its own sign code; this county rule governs only unincorporated Multnomah County.

Sources & Official References

Other rules in Multnomah County

All Multnomah County rules

Compare Multnomah County to another location·View the Oregon home business overview

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