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Strobe

Bringing purpose to the surface — how Strobe clarified their urban vision

A reclaimed urban service yard rebuilt as a stepped concrete civic plaza at golden hourCivic
Published
Location
Portland, OR
Site size
0.25 acres
Scope
Landscape architecture, Green infrastructure, Native planting design

400K

Gallons kept out of the combined sewer each year

2024

Completed

Strobe is not a typical developer. They assemble small, awkward urban parcels and hold them for decades, which means the ground between their buildings matters more to them than the buildings do.

Their Central Eastside site had been a fenced service yard for thirty years: eleven thousand square feet of cracked asphalt, three loading bays and a stormwater connection that surcharged twice a winter. Everyone agreed it should be something. Nobody could say what.

We started by listening — to how Strobe talks about tenure, about who a place belongs to at seven in the morning versus seven at night, and about the difference between a plaza that is used and a plaza that is merely crossed.

Challenge

The parcel sat four feet below the adjacent sidewalk and drained to a single combined sewer inlet. Any public use meant solving grade and water first, and the budget assumed neither. A previous consultant had proposed a raised deck that would have consumed sixty percent of the construction cost before a single plant went in.

There was also a narrative problem. Strobe had been describing the project in planning meetings for four years using words like activation and permeability. Neighbours heard those words and pictured nothing at all. The scheme needed to be legible from a single drawing.

Solution

We used the four-foot drop instead of fighting it. A board-formed concrete terrace steps the grade down in three moves, and each riser doubles as seating facing west into the afternoon sun. The lowest terrace is a shallow bioretention basin planted with rush and sedge that takes the roof water from both adjacent buildings.

In an average year it holds and infiltrates around four hundred thousand gallons that used to go straight to the combined sewer. In a heavy storm it is visibly a pond, which turned out to be the most persuasive thing on the site — people understand a landscape that is obviously doing a job.

Multi-stem river birch in gravel beds give the space a canopy without blocking the sightline from the street, so the plaza reads as open from outside the fence line it replaced. The whole scheme fits on one section drawing, which is the drawing Strobe now opens every meeting with.

Board-formed concrete retaining wall meeting a gravel path and fern planting
Board-formed concrete retaining wall meeting a gravel path and fern planting
A stepped stone runnel carrying a thin sheet of water between planted terraces
Water moving through the finished terraces
A restored freshwater wetland with open water braided through stands of bulrush and sedge
From the client
“Working with Landscape was like finally hearing our own argument said back to us clearly. We had been talking about this site for four years. It took one section drawing to end the conversation.”
Ricky MartenFounder, Strobe
Elena Braithwaite, founding principal
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