Looking for research on the antenna laws for WashingtonCounty? See what I have found
See http://www.co.washington.or.us/deptmts/lut/plan99/codepdf/code.htm for a list of PDF files for each section of the code.
A review should include the section applying to your zone, as well as:
- 201 Development Permit 430-1 Accessory Uses and Structures 430-109 Receiving and Transmitting Antennas and Communication Towers
These rules most likely apply only to those in unincorporated areas of the county. If you live in a city, check with them instead.