C406.1 Additional energy efficiency credit requirements. New buildings and changes in space conditioning, change of occupancy and building additions in accordance with Chapter 5 shall comply with sufficient packages from Table C406.1 so as to achieve a minimum number of 6 credits. Each area shall be permitted to apply for different packages provided all areas in the building comply with the requirements for 6 credits. Areas included in the same permit within mixed use buildings shall be permitted to demonstrate compliance by an area weighted average number of credits by building occupancy achieving a minimum number of 6 credits.
EXCEPTIONS: | 1. Low energy spaces in accordance with Section C402.1.1.1 and equipment buildings in accordance with Section C402.1.2 shall comply with sufficient packages from Table C406.1 to achieve a minimum number of 3 credits. |
| 2. Building additions that have less than 1,000 square feet of conditioned floor area shall comply with sufficient packages from Table C406.1 to achieve a minimum number of 3 credits. |
Table C406.1
Efficiency Package Credits
Code Section | Commercial Building Occupancy |
Group R-1 | Group R-2 | Group B | Group E | Group M | All Other |
Additional Efficiency Credits |
1. More efficient HVAC performance in accordance with Section C406.2 | 2.0 | 3.0 | 3.0 | 2.0 | 1.0 | 2.0 |
2. Reduced lighting power: Option 1 in accordance with Section C406.3.1 | 1.0 | 1.0 | 2.0 | 2.0 | 3.0 | 2.0 |
3. Reduced lighting power: Option 2 in accordance with Section C406.3.2a | 2.0 | 3.0 | 4.0 | 4.0 | 6.0 | 4.0 |
4. Enhanced lighting controls in accordance with Section C406.4 | NA | NA | 1.0 | 1.0 | 1.0 | 1.0 |
5. On-site supply of renewable energy in accordance with C406.5 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 |
6. Dedicated outdoor air system in accordance with Section C406.6b | 4.0 | 4.0 | 4.0 | NA | NA | 4.0 |
7. High performance dedicated outdoor air system in accordance with Section C406.7 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 |
8. High-efficiency service water heating in accordance with Sections C406.8.1 and C406.8.2 | 4.0 | 5.0 | NA | NA | NA | 8.0 |
9. High performance service water heating in multi-family buildings in accordance with Section C406.9 | 7.0 | 8.0 | NA | NA | NA | NA |
10. Enhanced envelope performance in accordance with Section C406.10c | 3.0 | 6.0 | 3.0 | 3.0 | 3.0 | 4.0 |
11. Reduced air infiltration in accordance with Section C406.11c | 1.0 | 2.0 | 1.0 | 1.0 | 1.0 | 1.0 |
12. Enhanced commercial kitchen equipment in accordance with Section C406.12 | 5.0 | NA | NA | NA | 5.0 | 5.0 (Group A-2 only) |
a | Projects using this option may not use Item 2. |
b | This option is not available to buildings subject to the prescriptive requirements of Section C403.3.5. |
c | Buildings or building areas that are exempt from the thermal envelope requirements in accordance with Sections C402.1.1 and C402.1.2, do not qualify for this package. |
C406.1.1 Tenant spaces. Initial tenant improvement shall comply with sufficient packages from Table C406.1 to achieve a minimum number of six credits. In buildings with multiple tenant spaces, each tenant space is permitted to apply for different packages provided all areas in the building comply with the requirement for six credits.
C406.1.1.1 Applicable envelope and on-site renewable energy credits. Where an entire building or building addition complies with Section C406.5, C406.10 or C406.11, under an initial tenant improvement permit, tenant spaces within the building qualify for the number of credits assigned to the occupancy type of the tenant space in accordance with Table C406.1.
C406.1.1.2 Applicable HVAC and service water heating credits. Where HVAC and service water heating systems and services are installed and comply with Section C406.2 or C406.8 under an initial tenant improvement permit, those systems and services shall be considered a part of the tenant space. Tenant spaces qualify for the credits assigned to the occupancy type of the tenant space in accordance with Table C406.1 if the tenant space includes the distribution system and equipment that the central HVAC systems or service water heating systems were designed to support.
EXCEPTION: | Previously occupied tenant spaces in existing buildings that comply with this code in accordance with Section C501. |
[Statutory Authority: RCW
19.27A.025,
19.27A.045 and chapter
19.27 RCW. WSR 20-21-080, § 51-11C-40600, filed 10/19/20, effective 2/1/21. Statutory Authority: RCW
19.27A.020,
19.27A.025,
19.27A.160 and chapter
19.27 RCW. WSR 19-24-040, § 51-11C-40600, filed 11/26/19, effective 7/1/20. Statutory Authority: RCW
19.27A.025,
19.27A.160, and
19.27.074. WSR 16-03-072, § 51-11C-40600, filed 1/19/16, effective 7/1/16. Statutory Authority: RCW
19.27A.020,
19.27A.025 and chapters
19.27 and
34.05 RCW. WSR 13-04-056, § 51-11C-40600, filed 2/1/13, effective 7/1/13.]