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DevCo Inc., 4-Star Multi-Family Housing

DevCo Inc
Vital Stats
Location: Issaquah
Star Level: 4-Star
Checklist: Multi Family New Construction Checklist
Verifier: Chris Edlin, O'Brien & Company
Section Points
Site and Water 123
Energy Efficiency 84
Indoor Air Quality 113
Material Efficiency 81
Total Score 401

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Discovery Heights II, the second phase of a large three phase project, is a 4-star Built Green® property located in the Issaquah Highlands. The main use for this parcel is residential: 57 units of multifamily rental housing, mostly flats, but it also incorporates 9 carriage housing units. The ground floor of a portion of the larger building consists of approximately 6,000 square feet of retail space. The site has parking, a breezeway connection through the building, a public plaza, a play area and associated streetscape improvements. GGLO designed the site's five buildings, landscape, and interiors, incorporating these design guidelines in the project:

  • Housing gathered around a shared space
  • Parking court removed and screened from streets
  • Combined vehicular, cyclist, and pedestrian circulation
  • Creating a unique identity for the project
  • Bulk and height of buildings compatible with surrounding and future uses
  • Design social gathering places at the building breezeway and lobby, and a public plaza
  • Play area in direct view of units
  • Easy access to shopping and other services
  • Recycling and yard waste facilities


The project contributes to the overall sustainability of Issaquah's Highlands by providing housing within walking distance of nearby businesses. Residents have access to amenities such as a grocer, restaurants, services and to transit, which greatly reduces the amount of single driver trips. The inviting sidewalks and trail network throughout the Highlands encourages residents to leave their car at home and walk to the neighborhood pedestrian-friendly town center.

O'Brien and Company was the Green Building Consultant and performed third-party Built Green verification. The following strategies were among those used to achieve Built Green certification:

    Site and Water
  • Native and adaptive, drought-tolerant plants
  • Non-toxic outdoor materials used for landscaping
  • No turf grass planted
  • Drip irrigation with smart controller that minimizes evapotranspiration
  • WaterSense® labeled showerheads (1.5 gpm) and lavatories (0.5 gpm) installed in all bathrooms
  • Kitchens equipped with WaterSense® labeled faucets (1.5 gpm)
  • WaterSense® low-flow (1.28 gpf) toilets in all units
  • Stormwater from the building and site is diverted to the Highlands stormwater infiltration system


    Energy Efficiency
  • 15% percent above 2009 Energy Code
  • Energy Star® refrigerator in every unit
  • Maximized daytime natural light in all units
  • Energy and water efficient washing machine in every unit
  • No air conditioning
  • Motion sensor exterior lighting
  • Use of Energy Star® compliant CFL lighting
  • High performance windows (0.22 weighted average U-value)
  • Energy Star® exhaust fans
  • Reduced lighting power densities
  • Domestic hot water system performing 34% better than code


    Indoor Air Quality
  • Permanently installed track-off mats at common entries to the building
  • Low-VOC paints, coatings, adhesives, and sealants
  • GreenGuard® labeled insulation
  • FloorScore® labeled resilient flooring
  • Green Label Plus® labeled carpet
  • Installed interior trim and molding with no added urea formaldehyde


    Materials Efficiency
  • Sent construction waste to a facility that diverted 85% of the waste from a landfill
  • Installed locally and regionally produced materials, including windows and lumber
  • Installed materials with a long durability
  • Did not use any endangered wood species
  • Installed no vinyl siding


It is pretty clear from these strategies that residents will be living in efficient and healthy units and will enjoy the community-oriented development.

Still Images
Click on an image to enlarge - Photo Credit to Derek Reeves, GGLO

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Use pervious surfaces to reduce rainwater runoff