The Gage Residence on Alameda de las Pulgas in Redwood City, modeled and verified through the Passive House Planning Package (PHPP) and targeting Passive House Plus certification with CertiPHIers Cooperative. Every number below comes from the project's PHPP energy calcs (rev. March 30, 2025).
The Passive House Planning Package (PHPP) is an ASHRAE-140-validated energy model. Here is the project's verification sheet, line for line.
Building geometry, occupancy, climate and design temperatures used in the PHPP run.
| Project name | Gage Residence |
| Street | 340 Alameda de las Pulgas, Redwood City, CA |
| Building type | Single-family residence (new construction) |
| Year of construction | 2025 |
| Treated floor area | 2,837 ft² |
| Number of dwelling units | 1 |
| Number of occupants (modeled) | 3.1 |
| Interior temperature, winter | 68.0 °F |
| Interior temperature, summer | 77.0 °F |
| IHG cooling case | 0.73 BTU/(h·ft²) |
| Climate data set | US0115 — Oakland (adjusted for site elevation) |