What Is It?
Our Seattle Energy Code regulates the energy-use features of new and remodeled buildings, including:
- Building Envelope: controls heat loss and air leakage through the roof, walls, windows, etc.
- Heating, Ventilating and Air Conditioning (HVAC): equipment efficiency, and controls
- Water Heating: equipment efficiency, and controls
- Lighting: fixture type, quantity, and controls
2012Seattle Energy Code Mandatory December 26
Our new Seattle Energy Code (together with all of the other 2012 Seattle construction codes) will be mandatory for permit applications starting December 26, 2013. There will be a 60-day transition period between October 27 and December 24, when you can use either the 2009 or the 2012 codes.
Read the Code
Residential versus commercial. The Seattle Energy Code chapters that apply to your project depend on whether your project is residential or commercial. See below for a breakout of the chapters by each version of the code.
- Chapters 1-10: Single-family homes, duplexes, and townhouses
- Chapters 11-15: Multifamily buildings, without Seattle amendments
- Chapters 11-16: Non-residential buildings, with Seattle amendments
- Chapters 2 (definitions), 7 (design temps) and 10 (U-values) apply to all projects
- Use the “residential” code chapters for single-family homes, duplexes, and townhouses
- Use the “residential” code chapters for 1-, 2-, and 3-story multifamily buildings
- Use the “commercial” code chapters for 4-story and higher multifamily buildings
- Use the “commercial” code chapters for non-residential buildings
Remodeling projects. Depending on when you applied for your permit, the 2009 or 2012 version of the Seattle Energy Code may apply to your permit.
- Use section 101.3.2 for single-family homes, duplexes, and townhouses
- Use section 1130 for multifamily buildings, without Seattle amendments
- Use Section 1130 for non-residential buildings, with Seattle amendments
- Use “residential” code sections R101.4.1 through R101.4.5 for single-family homes, duplexes, and townhouses, and for 1-, 2- and 3-story multifamily buildings
- Use “commercial” code sections C101.4.1 through C101.4.5 for non-residential and for 4-story and higher multifamily buildings
The 2012 Seattle Energy Code will take effect in fall 2013. To dig deeper, go to our 2012 Building Code Update.