Hosted by: TC Legend Homes

  • Architect: Powerhouse Designs
Green Features:

Solar panels
High performance building envelope using SIGA air barrier system
Exterior insulation using Steico Fiber Wood Product for high R-value wall assemblies
High performance triple-glazed VETTA windows
Zehnder HRV/ERV heat recovery ventilation system
Heat pump hot water system


Explore the Lynden Powerhaus by TC Legend Homes. This home will receive the DOE Zero Energy Ready Home, ENERGY STAR, and EPA Indoor airPLUS certifications, and is anticipated to receive Built Green 5-star certification. This thoughtful design can house up to four families and is capable of powering the home completely off the grid for weeks.

  • 1549sf SFR & 842sf ADU
  • 1123sf unconditioned garage & shop
  • 4 bedroom, 3.5 bath SFR & 1 bedroom, 1 bath ADU
  • 1st floor aging-in-place
  • Net Zero Energy
  • Passive solar heating/cooling design
Water Efficiency

WaterSense plumbing fixtures

Energy & Atmosphere
  • Annual Energy Cost Savings: $3,717
  • PV: 17.01kW solar array with whole home battery back-up
  • Insulation: R-29 walls & R-59 ceiling
  • Air Sealing: 0.45ACH
  • HERS Index: -24
Materials & Resources
  • Timber framed entry
  • Metal roof
  • Locally made walnut and maple cabinets
  • Bamboo Floor Score certified flooring
  • Vanair vented interior doors
  • Locally made solid fir front door
  • Silestone and Corian countertops
  • ENERGYSTAR appliances
  • LED lighting
  • No/Low-VOC finishes
  • Triple pane, Low-E coated, argon-filled vinyl windows
Indoor Air Quality
  • EPA Indoor airPLUS certification
  • Ventilation: (3) Fantech Hero 250 with built in HEPA filter. Built-in humidity, temperature, and CO2
  • Heating/Cooling: Chilltrix CX-50; hydronic radiant floor heating downstairs and (3) fan coil units

No reported accessibility limitations


Street parking is available

View all sites on the Green Home Tours & Talks website


Many Thanks To Our Energy & Green Building PROGRAM Funders and Sponsors!


Puget Sound Cooperative Credit Union
Puget Sound Cooperative Credit Union
Truly Electric & Solar
Instinct Builders
Ecotech Solar
Puget Sound Cooperative Credit Union
Puget Sound Cooperative Credit Union
Bellingham Bay Builders
Puget Sound Cooperative Credit Union
CAZ Construction