Date
Inquiry

Our multifamily project is pursuing Passive House certification. Is there an equivalency to 90.1-2010 for Passive House certified multifamily projects?

Ruling

Yes, multifamily projects that achieve Passive House certification through the Passive House Institute (PHI) or PHIUS+ certification through the Passive House Institute US (PHIUS) certification may document equivalent energy performance improvement compared to 90.1-2010, as described below.
For projects applying the LEED v4 2024 energy update, use the equivalent percent improvement for each metric referenced in EA Credit: Annual Energy Use (i.e. use the referenced percent improvement compared to ASHRAE 90.1-2010 in lieu of the cost or source energy metric referenced in Table 1 and in lieu of the GHG emissions metric referenced in Table 2).
Equivalent percent improvement compared to ASHRAE 90.1-2010 (for each referenced metric, as applicable - cost and greenhouse gas emissions)
Climate Zones 1A, 2A: 24%
Climate Zones 2B, 3B: 27%
Climate Zones 3A, 4: 31%
Climate Zones 4C, 5: 30%
Climate Zones 6, 7, 8: 38%
AND
Projects may earn 1 point for every 7% decrease in conditioned floor area compared with the ENERGY STAR for Homes, version 3, reference home (Table 1). Buildings that are larger than the reference home lose 1 point for every 7% increase in conditioned floor area. For multifamily buildings, home size includes only in-unit space. Projects cannot exceed the maximum number of points in the EA section.
Table 1. Conditioned floor area of reference home, by number of bedrooms
1
2
3
4
5
6
7
8 or more
Floor Area (square feet)
1,000
1,600
2,200
2,800
3,400
4,000
4,600
+ 600 ft2 per additional bedroom
Floor Area (square meters)
93
148
204
260
315
371
426
+ 55.6 square m2per additional bedroom
Updated March 1, 2024 to align with changes in the LEED v4 Energy Update and to recognize credit for Home Size Adjuster.

Internationally Applicable
On
Campus Applicable
Off
Credits