Multnomah County allows garage sale signs under MCC 39.6250 temporary sign provisions, 6 sq ft maximum on private property. Portland PCC 32.32.020 permits temporary event signs but prohibits placement on utility poles, trees, or public right-of-way under PCC 17.28.070. Portland removes unauthorized signs without notice through the PBOT Sign Shop.
Temporary garage and yard sale signs are classified as Temporary Non-Commercial Signs under Multnomah County Code 39.6250.070 and Portland City Code 32.32.020. Signs may not exceed 6 sq ft on residential property and may only be posted 48 hours before through 24 hours after the sale. Signs placed on utility poles, traffic signs, street trees, or any portion of the public right-of-way are prohibited under PCC 17.28.070 (which covers attachments to street furniture and poles) and MCC 29.050. Oregon ORS 377.700 also prohibits unauthorized signs on state highway rights-of-way, enforced by ODOT. Portland's PBOT Sign Shop conducts weekly sweeps along arterials (82nd Avenue, Powell Blvd, Burnside) and removes posted bills without notice — homeowners are not notified and signs are not returned. Gresham Municipal Code 7.70 has similar provisions. Sign stakes placed in the planting strip between sidewalk and curb are considered right-of-way encroachments. No permit is required for compliant garage sale signs. Sales of personal property from a residence more than 3 times per year in unincorporated Multnomah County may trigger home-occupation zoning review under MCC 39.7505.
Signs on utility poles or in right-of-way: immediate removal without notice, no fine for first offense, $50-$250 for repeat offenders. Oversized or late signs: written notice and $50 civil penalty. Staking in planter strip: removal.
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