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Development Services

From Concept to Construction

Phone: 503-823-7300


1900 SW 4th Ave, Portland, OR 97201

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Converting a house to a mixed occupancy will likely 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.