Kiln Apartments, OR


Kiln Apartments is one of the nation’s first mixed-used apartment buildings targeted to achieve PHIUS+ certification. Kiln was a research and design effort to develop the most energy efficient market-rate apartment building possible.  

The 16,000 square foot project is located in a pedestrian- and bicycle-friendly area of the North Williams neighborhood of Portland, Oregon. The property features 19 market rate for-lease apartments and ground floor retail, and recently sold to an investor at a premium above comparable sales prices for the area.

Project Data
Client/OwnerKiln LLC
LocationPortland, OR
Climate Zone4C
Size (sf)13,164
Construction TypeTimber
Walls2x6 wood stud, blown cellulose, 4" exterior polyiso (R-52)
Roofwood trusses w/ blown cellulose + exterior board insulation (R-70)
FloorsSlab on grade with footings, stem walls, rigid foam under slab (R-21)

Heating - Windows selected and arranged for passive solar heat; radiant wall-mounted panels heated by solar-thermal roof panels (supplemented by a condensing gas boiler)
Ventilation - Central HRV - UltimateAir 2000DX

WindowsCascadia tilt-turn fiberglass with Cascadia 300 series glass (366‐arg‐Cl‐arg‐180, xl)
Project Team


Kiln LLC


Agustin Enriquez | 

1120 NW Couch St., Suite 300
Portland, OR 97209


Lorentz Bruun Construction
3611 SE 20th Avenue
Suite 300
Portland, OR 97202


David Posada

phius+ rater

Ryan Shanahan | Earth Advantage
623 SW Oak Street, Third Floor
Portland, OR 97205