Water Conservation

  • On-site drywell to manage storm water
  • Low Flow fixtures
  • Dual Flush Toilets
  • Tankless water heater servicing main house

Energy Efficiency

  • CFL Lighting
  • LED Lighting
  • Energy Star Rated Appliances
  • Heat Pump Technology
  • Triple Pane Window Package

Sustainable Materials

  • Reclaimed wood sourced from Madsen Grain Mill reclamation
  • No/Low VOC Paints
  • Pre-finished metal siding
  • Bamboo flooring

Indoor Air Quality

  • No carpeting
  • ERV servicing main house
  • SmartExhaust bath fan in basement ADU


  • Earth Advantage (Platinum)

The People

Owner: Chris Perkins & Jingzi Zhao
Architect: Emily Refi, Waterleaf Architecture
Project Manager: Zack Geary

By The Numbers

1 – Roof Top Deck with amazing views

1.8 ACH – Score at Final Blower Door Test

1 – inch of concrete separating ADU from living space

30 – foot panels of metal siding on house

1 – VERY Zebra wall

99 – Earth Advantage walkability score (out of 100)