Other Stormwater Facilities

Healy Heights addition -stormwater facility as egress for basement windows

When building an addition, changing a building’s footprint, or adding more than 500 square feet of impervious area, the City of Portland requires provisions be made to accommodate stormwater. The type of stormwater facility required will vary depending on lot size, and the type of soil on the lot.

From large NE Portland lots with absorbant soil where a bioswale is the most suitable stormwater facility, to SW Portland’s steep clay sites where approved stormwater collection planter boxes are preferred, to inner-city lots where an ecoroof is the best option, Manning Design+Construction can help determine the best facility for your project and take you from planning and design, to completion.


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