Courtland Place Passive House
Building Use: Detached single-family residence with accessory dwelling unit
Project Type: New passive house building
New in-fill residence designed and started in 2010. Main unit is 3+ bedroom, 3 bath. Accessory unit is an attached 1 bedroom/1 bath above garage.
| Location: | Seattle, Washington 98118 | |
| Dwelling Units: | 2 | |
| PH Calculation Protocol(s): | PHI | |
| PH Modeling Software(s): | PHPP, WUFI Passive | |
| Year Of Construction: | 2011 | |
Project Size | ||
| Floor Area: | 1,900.0 ft2TFA | 176.5 m2TFA |
Performance | ||
| Annual heat demand: | 4.40 kBtu/yr•ft2TFA | 13.9 kWh/yr•m2TFA |
| Heat load: | 3.10 Btu/hr•ft2TFA | 9.8 W/m2TFA |
| Primary energy demand: | 36 kBtu/yr•ft2TFA | 113.6 kWh/yr•m2TFA |
| Airtightness: | 0.41 ACH50 | |
Envelope | ||
| Construction Type: | wood | |
| Floor Assembly: | Area 1: Slab on grade - 4" concrete above 10 mil poly above 12" EPS (perimeter is 16" concrete above 4" high-density EPS) Area 2: Suspended floor above garage - wood flooring above tar paper above 3/4" plywood above 16" I-joist with BIBS above 5/8" GWB | |
| Wall Assembly: | 14" Wall truss: Fiber-cement or cedar siding over 3/4" ventilated gap over membrane over Homasote 440 over 14" truss with BIBS over 7/16" OSB over GWB | |
| Roof Assembly: | Main Area: Vented Shed - Metal roofing over membrane over 1/2" plywood over 22" truss (2" air gap with membrane above 20" BIBS) over 7/16" OSB over 5/8" GWB | |
| Windows: | Cascadia - Tile/Turn and fixed, fiberglass insulated frame | |
| Entry Doors: | Therma-tru insulated fiberglass panels, wood frames, cusom wood thresholds | |
Systems | ||
| Ventilation system: | Ultimate Air Recoupaerator | |
| Heating/Cooling system: | Main heating: hydronic coil heated from Domestic Hot Water tank integrated in ventilation Secondary heating: Electric resistance | |
| Domestic hot water system: | AO Smith natural gas, condensing, sealed combustion with outside air supply | |
| Renewables: | none yet | |
Team | ||
| Passive House Consultant: | Dan Whitmore | |
| Architect: | Dan Whitmore | |
| Structural Engineer: | Carissa Farkas | |
| Mechanical Engineer: | - | |
| Contractor: | Black Bird Builders | |
Comments | ||