Zero Energy Ready SIP Power House Bellingham WA

Location: Bellingham, WA

Project Information

Project Type: Residential, < 3,000 sq. ft.
Manufacturer: Premier Building Systems
Builder: TC Legend Homes
Design Professional:
Year Built: 2015


High Performance: Yes
HERS/EUI Index Score: -12
ACH50 - Blower Test Results: 0.64
CO2 lbs./sq.ft./year:

Awards/Certifications: DOE Zero Energy Ready Home, ENERGY STAR Certified, EPA Indoor AirPLUS

Project Data:
• Name: Bellingham Power House
• Location: Bellingham, WA
• Layout: 4 bedrooms, 3 baths, 2 floors
• Conditioned Space: 2,781 ft2
• Climate Zone: IECC 4C, marine
• Completion: March 2015
• Category: Custom
Modeled Performance Data:
• HERS Index: without PV 34, with PV -12
• Projected Annual Utility Costs: without PV $883, with PV $-191
• Projected Annual Energy Cost Savings (compared to a home built to the 2012 IECC) without PV $557, with PV $1,586
• Builder’s Added Cost Over 2012 IECC: without PV $7-11/ft2 , with PV $21-25/ft2
• Annual Energy Savings: without PV 30 MMBtu, with PV -11 MMBtu


• DOE Zero Energy Ready Home Path: Performance 
• Walls: 8" SIPs (R-30); house wrap; fiber cement siding. 
• Roof: 12" (R-46) SIPs; standing-seam steel roofing. 
• Attic: 12” (R-46) SIPs. 
• Foundation: ICF walls (R-28); rigid foam under slab (R-20). 
• Windows: Triple-pane; argon-filled; vinylframed; low-e; U=0.16; SHGC=0.50. 
• Air Sealing: 0.64 ACH 50. 
• Ventilation: HRV; 4" earth tube. 
• HVAC: Air-to-water heat pump; COP 4.4; radiant floor heat. 
• Lighting: 100% LED.
• Appliances: ENERGY STAR-rated refrigerator, clothes washer, and dishwasher. 
• Solar: 9.9 kW PV. 
• Water Conservation: EPA WaterSenserated toilets; low-flow fixtures; rainwater collection for irrigation; native plants. 
• Other: Energy management system; electric car-charging station; passive solar design; accessory apartment; low-VOC.

To explore other Zero Energy Ready Homes, visit the Department of Energy’s Tour of Zero page.


Affiliated Members

Premier SIPs

Puyallup, WA
TC Legend Homes
Bellingham, WA


SIPA Website Sponsors