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Bureau of Development Services staff on Wednesday announced to renovate the 109-year-old C.K. Henry Building in downtown Portland.

The six-story Henry Building was designed by architect Francis J. Berndt, and sits on a quarter-block at 309 S.W. Fourth Ave. It’s considered significant because of its Chicago School architecture and its association with Charles K. Henry, an influential developer in early 20th century Portland. The building was added to the National Register of Historic Places in 1982.

Central City Concern owns and manages the unreinforced masonry building, which has 153 affordable housing units. Renovation plans call for an extensive seismic retrofit, systems upgrades and additions of group living units.

The project’s designer, SERA Architects, worked to avoid impacting the exterior façade, the interior daylight atrium or historically significant interior elements.

Two new elevators will be installed in the core to increase structural stability. Other significant work includes installation of new photovoltaic arrays on the north and east sides of the rooftop and replacement of the front entrance with wood-framed glass entry doors. Also, an exterior fire escape on the building’s west façade will be removed.

Interior alterations include reconfiguration of retail spaces, offices and community rooms, and construction of 56 new long-term bicycle parking spaces.

Colas Construction is set to serve as the general contractor for the project.

Appeals of BDS‘ approval may be submitted to the Portland Historic Landmarks Commission; they must be submitted at the fifth-floor reception desk at 1900 S.W. Fourth Ave. by 4:30 p.m. on Oct. 31.