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February 1, 2016

Onni Group looking at district energy system as part of huge SLU complex

Courtesy Chris Dikeakos Architects [enlarge]

Onni Group of Vancouver, B.C., has released new details about one of the two blocks it is developing in South Lake Union.

The site is at 1120 Denny Way, and the latest plans are for a pair of 41-story residential towers with a total of 1,197 units, 27,500 square feet of retail and about 1,600 underground parking spaces.

Onni is considering putting in a district energy system as part of the project, according to documents prepared for a design review meeting this week. The documents say there are 12 projects proposed within a six-block radius of Onni's site. A district energy system could lower capital and operating costs, and allow buildings to share and reuse heat and water. A Seattle-based firm called Integral Group that says it specializes in “deep green engineering” is listed in a section of the documents on sustainability.

The project architect is Chris Dikeakos Architects of Burnaby, B.C. ETA Landscape Architecture is the landscape architect and Glotman Simpson is the structural engineer.

The Seattle Times park on the northwest corner of the site would be preserved.

The podium height would be staggered throughout the block to create rooftop decks on the second, fifth, sixth and 13th floors. The decks would have multiple pools, a solarium, plantings and seating areas.

A design review meeting recommendation meeting is set for 6:30 p.m. Wednesday at Queen Anne Community Center, 1901 First Ave. W.

This meeting will focus on the 1120 Denny block. Past reviews have included Onni's second block at 1120 John St.

Permitting activity indicates that Onni is still planning to develop the second block, which would have a 29-story and 36-story tower with 843 units, 17,630 square feet of retail and 1,235 underground parking spaces. Onni applied for a demolition permit for that site in December.

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