Skip to Main Content View Text-Only

The City of Portland, Oregon

Development Services

From Concept to Construction

Phone: 503-823-7300


1900 SW 4th Ave, Portland, OR 97201

More Contact Info


Converting a house to office use may only mean removing the brick chimney from the house, down to the level of the roof, and attaching the house to the foundation with ties.

But, if the house has previously been altered to reduce its lateral resistance (interior walls or large areas of floor removed, or large openings cut in the exterior walls), a full seismic analysis would be required.

For more information on seismic requirements or triggers, call our Structural Reviewers' information line at (503) 823-1302 or visit our Development Services Center.