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Denizen Development Group: Madrona 12

On the charming main strip of Madrona is situated a combination of townhouses and live-work units constructed by Denizen Development Group, known as Madrona 12. Blending seamlessly into the neighborhood, the units form part of the small-town community feel of Madrona, with convenient access to the library, schools, shops, restaurants, and parks nearby. The four live-work units are easily accessible from the street and will hopefully bring more commercial space to the neighborhood.

High above on the rooftop sits a feature for the homeowners to enjoy: green roofs. Overall, the green roofs total about a quarter of the rooftop space, while the remainder is deck space to entertain and take in the surrounding scenery.

Vital Stats

Section

Points

Location: Madrona, Seattle
Star Level: 4-Star 
Checklist: Single-Family/Townhome
Verifier: Evergreen Certified
Site and Water 143
Energy Efficiency 98
Health and Indoor Air Quality 99
Material Efficiency 77
  Total Score 479

 

Other features that will go unnoticed, including by the homeowners, are the low blower door scores and high density blown-in fiberglass insulation in the walls and ceilings. Those, working in tandem with the full R-10 sub-slab insulation, ductless mini-splits, and high-efficiency gas tankless water heaters, will have a big impact on energy savings.

Denizen Development Group Madrona 12 Built Green 4-Star live/work townhomes courtyard

For good indoor air quality, Denizen used all low-VOC, low-toxic paints, caulks, finishes, and adhesives, and many certified products, such as CRI Green Label carpet. Their commercial-grade housewrap, rainscreen under the siding, drainage mat around the foundation, and back dams on doors and windows is sure to keep weather and water out of the units, hopefully keeping it a healthy environment for a long time to come. In addition, Madrona 12 also used an abundance of locally and regionally made materials, from the pavers to the siding and the studs in between.

Built Green Highlights

Site and Water

  • All pervious hardscaping
  • Green roof!
  • No turf grass and drought-tolerant landscaping
  • Low-flow EPA WaterSense-certified plumbing fixtures

Energy Efficiency

  • Energy consumption reduced by 29% compared to code
  • Commercial-grade VaproShield housewrap
  • Full rigid sub-slab insulation and fiberglass BIBs in walls and ceiling
  • Energy Star Appliances and all LED lighting
  • 2.5ACH @ 50Pa average blower door score
Denizen Development Group Madrona 12 Built Green 4-Star live/work townhomes entry doors
Denizen Development Group Madrona 12 Built Green 4-Star live/work townhomes green roof
Denizen Development Group Madrona 12 Built Green 4-Star live/work townhomes small in-unit commercial space
 

Health and Indoor Air Quality

  • Rainscreen drainage plane beneath the siding
  • Sloped sill pan with back and end dams on windows and doors
  • Low VOC paints, finishes, and adhesives
  • CRI Green Label Plus-certified carpet

Materials Efficiency

  • Extensive use of locally produced material
  • Recycled content underlayment, tiles, and carpet pad
  • 100% recycled content plastic decking material
  • Metal and blocks siding accents
Denizen Development Group Madrona 12 Built Green 4-Star live/work townhomes kitchen and living room
Denizen Development Group Madrona 12 Built Green 4-Star live/work townhomes bedroom

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