Sunnyvale City Hall
Principal Use
Institutional
Design Architect
Smithgroup
Anything about the engineers? Facade consultants?
KPFF (structure), PAE (MEP)
Gross Floor Area
Reason(s) for inclusion
Building Name
Sunnyvale City Hall
Address
456 W Olive Ave, Sunnyvale, CA 94086
Description / Additional Information
Describe the key innovation and technology aspects of the project
Project Narrative
Placing the required number of PV panel to achieve Net Zero, the solar canopy shaded to facade to maximize the amount of glazing for the building. Additional sunshade, vertical fins and frit pattern were used to help with daylight and glare control. Timber curtain wall is used to reduce carbon footprint and provide visual comfort to the users.
General Information
Year completed (or major renovation)
2024
Construction Cost
Confidential
Climate Zone
Temperate
Building Certifications (check all that apply)
- LEED
- Net Zero
Other Design Features
Energy Performance
Energy Use Intensity (energy consumption per year)
3 kWh/m2/year
30 kBtu/ft2/year
Percentage Provided by On-site Renewables
106
Construction Type
Construction Type
- Curtain Wall
Prevalent Glazing Type
- Double Glazing
Main Cladding Material
- Aluminum
- Other (please specify)
Other Cladding Material
stone, timber curtain wall
Approximate WWR (measured from the inside)
63%
Typical U-value Glazed Facade Elements
2 W/(m2⋅K)
0 Btu/(h·ft2⋅F)
Typical G-value Glazed Facade Elements
26%
Typical VLT Glazed Facade Elements
59%
Typical U-value Solid Facade Elements
0.17 W/(m2⋅K)
0.03 Btu/(h·ft2⋅F)
Skin Type
Skin Type
- Single Skin Facade
Solar Shading
Solar Shading Strategy
- Static Exterior Shading
Ventilation
Is there natural ventilation through the facade?
No
Type of Ventilation Strategy
- Single-sided
Ventilation Operation Type
- BMS controlled with overrides
Ventilation Control Strategy
- Based on Outdoor Air Temperature
Daylight
Is daylight simulation part of the design process?
Yes
Daylight metric(s)
- sDA
- ASE
- UDI
Target value(s)
sDA = 55%, ASE = 7%
Achieved value(s)
Supporting simulation
8718-Daylight-Analysis-LEED-Documentation-200708.pdfNoise
Embodied Carbon
Was a carbon assesment of the facade conducted in the design phase?
No
Energy Generation
Does the facade produce energy?
Yes
Percentage EUI Covered by the Facade
106
Type of Energy Produced
- Electrical
Insulation
Does the facade have a dynamic U-value?
No
U-value ranges
0.035
Active or Passive?
Monomaterial envelope?
No
Description / Additional Information
Add any additional private comments for CBE to better understand the project
The notion of being able to work among the mature trees around site makes “treehouse” an ideal metaphor for the top three levels of the City Hall. The warm color palette, tactile textures and filtered light are the architectural guideposts for the design of the “treehouse” which offers city staff an inspiring setting and beautiful views.
