The Portland Building. In order to make your research more productive be prepared. Since everything is filed by address, you should have an address for the site you wish to research. If there are multiple addresses please have those also. The basic information for this department is outlined below.
More detailed information is provided for each of the below items by clicking on it.
Structural permit records - for the construction or altering of a structure. Electrical permit records - for the electrical wiring. Sign permit records - for signs. Structural plans old structural plans on microfilm, for unincorporated Multnomah County.