Irving Penthouse Addition
The Irving Penthouse Addition project is a full seismic upgrade to an existing one-story building with a new 1-story penthouse addition. The existing building is a contributing resource in the Portland Alphabet District, the historic elements of the building are being repaired and painted, including the steel windows and corner entry. The penthouse addition sits back from the street edges to comply with the NPS historic requirements. Both the existing building and the penthouse addition will have a green roof and skylights.
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