(a) New EISA-Subject buildings.

1. (1) New Federal buildings that are low-rise residential buildings, for which design for construction began on or after May 1, 2025, must be designed to meet the requirements of paragraph (c) of this section if:

   1. (i) For all leased buildings, the construction cost of the new building exceeds GSA's Annual Prospectus Thresholds that are found at www.gsa.gov/real-estate/design-construction/gsa-annual-prospectus-thresholds.
   2. (ii) For all Federally owned non-public buildings, the cost of the building is at least $2,500,000 (in 2007 dollars, adjusted for inflation). For the purposes of calculating this threshold, agencies must set the Bureau of Labor and Statistics CPI Inflation calculator to $2,500,000 in October of 2006 (to represent the value of the original cost threshold) and then set for October of the FY during which the design for construction of the project began or is set to begin.

(b) Major renovations of EISA-Subject buildings.

1. (1) Major renovations to Federal buildings that are low-rise residential buildings, for which design for construction began on or after May 1, 2025, must be designed to meet the requirements of paragraph (c) of this section if the cost of the major renovation is at least $2,500,000 (in 2007 dollars, adjusted for inflation). For the purposes of calculating this threshold, projects should set the Bureau of Labor and Statistics CPI Inflation calculator to $2,500,000 in October of 2006 (to represent the value of the original cost threshold) and then set for October of the FY during which the design for construction of the project began or is set to begin.
2. (2) This subpart applies only to the portions of the proposed building or proposed building systems that are being renovated and to the extent that the scope of the renovation permits compliance with the applicable requirements in this subpart. Unaltered portions of the proposed building or proposed building systems are not required to comply with this subpart.
3. (3) For leased buildings, this subpart applies to major renovations only if the proposed building was originally built for the use of any Federal agency, including for the purpose of being leased by a Federal agency.

(c) Federal buildings that are of the type included in Appendix A of this subpart—(1) New Construction and Major Renovations of all Scope 1 Fossil Fuel-Using Systems in an EISA-Subject Building.

1. (i) Design for construction began during FY 2024 through FY 2029. For new construction or major renovations of all fossil fuel-using systems in an EISA-subject building, for which design for construction or renovation, as applicable, began during FY 2024 through 2029, the Scope 1 fossil fuel-generated energy consumption of the proposed building, based on the building design and calculated according to § 435.201(a), must not exceed the value identified in Tables A-1a to A-2a (if targets based on Scope 1 emissions are used) or Tables A-1b to A-2b (if targets based on kBtu of fossil fuel usage are used) of Appendix A of this subpart for the associated building type, climate zone, and fiscal year in which design for construction began.

   1. (A) Federal agencies may apply a shift adjustment multiplier to the values in Tables A-1a to A-2a or Tables A-1b to A-2b based on the following baseline hours of operation assumed in Tables A-1a to A-2a or Tables A-1b to A-2b.

   2. (B) To calculate the shift adjustment multiplier, agencies shall estimate the number of shifts for their new building and multiply by the appropriate factor shown below in Table 1 for their building type. The Scope 1 fossil fuel-generated energy consumption target for the building would be the value in either Tables A-1a to A-2a or Tables A-1b to A-2b multiplied by the multiplier calculated in the previous sentence.

      Table 1—Shift Adjustment Multiplier by Hours of Operation and Building Type

      Building activity/type	Weekly hours of operation
      50 or less	51 to 167	168
      Admin/professional office	1	1	1.4
      Bank/other financial	1	1	1.4
      Government office	1	1	1.4
      Medical office(non-diagnostic)	1	1	1.4
      Mixed-use office	1	1	1.4
      Other office	1	1	1.4
      Laboratory	1	1	1.4
      Distribution/shipping center	0.7	1.4	2.1
      Nonrefrigerated warehouse	0.7	1.4	2.1
      Convenience store	1	1	1.4
      Convenience store with gas	1	1	1.4
      Grocery store/food market	1	1	1.4
      Other food sales	1	1	1.4
      Fire station/police station	0.8	0.8	1.1
      Other public order and safety	0.8	0.8	1.1
      Medical office (diagnostic)	1	1	1.5
      Clinic/other outpatient health	1	1	1.5
      Refrigerated warehouse	1	1	1
      Religious worship	0.9	1.7	1.7
      Entertainment/culture	0.8	1.5	1.5
      Library	0.8	1.5	1.5
      Recreation	0.8	1.5	1.5
      Social/meeting	0.8	1.5	1.5
      Other public assembly	0.8	1.5	1.5
      College/university	0.8	1.3	1.3
      Elementary/middle school	0.8	1.3	1.3
      High school	0.8	1.3	1.3
      Preschool/daycare	0.8	1.3	1.3
      Other classroom education	0.8	1.3	1.3
      Fast food	0.4	1.1	2.1
      Restaurant/cafeteria	0.4	1.1	2.1
      Other food service	0.4	1.1	2.1
      Hospital/inpatient health	1	1	1
      Nursing home/assisted living	1	1	1
      Dormitory/fraternity/sorority	1	1	1
      Hotel	1	1	1
      Motel or inn	1	1	1
      Other lodging	1	1	1
      Vehicle dealership/showroom	0.8	1.2	1.8
      Retail store	0.8	1.2	1.8
      Other retail	0.8	1.2	1.8
      Post office/postal center	0.7	1.5	1.5
      Repair shop	0.7	1.5	1.5
      Vehicle service/repair shop	0.7	1.5	1.5
      Vehicle storage/maintenance	0.7	1.5	1.5
      Other service	0.7	1.5	1.5
      Strip shopping mall	1	1	1
      Enclosed mall	1	1	1
      Bar/Pub/Lounge	1	1	1.4
      Courthouse/Probation Office	1	1	1.4

2. (ii) Design for construction began during or after FY 2030. For new construction and major renovations of all Scope 1 fossil fuel-using systems in an EISA-subject building, the Scope 1 fossil fuel-generated energy consumption of the proposed building, based on building design and calculated according to § 435.201(a), must be zero.
3. (2) Major Renovations of a Scope 1 Fossil Fuel-Using Building System or Component within an EISA-Subject Building shall follow the renovation requirements in section 4.2.1.3 of the applicable building baseline energy efficiency standards listed in § 435.4 substituting the term “design for construction” with “design for renovation” for the relevant date, and shall replace all equipment that is included in the renovation with all electric or non-fossil fuel-using ENERGY STAR or FEMP designated products as defined in § 436.42. For component level renovations, Agencies shall replace all equipment that is part of the renovation with all electric or non-fossil fuel-using ENERGY STAR or FEMP designated products as defined in § 436.42.

(2) Mixed-use buildings. For buildings that combine two or more building types with process loads or, alternatively, that combine one or more building types with process loads with one or more building types in Tables A-1a toA-2a or A-1b to A-2b of appendix A of this subpart, the maximum allowable Scope 1 fossil fuel-generated energy consumption of the proposed building is equal to the averaged process load building values determined under paragraph (d)(1) of this section and the applicable building type values in Tables A-1a toA-2a or A-1b to A-2b of appendix A of this subpart, weighted by floor area. Equation 1 shall be used for mixed use buildings.

Equation 1: Scope 1 Fossil fuel generated energy consumption for a mixed-use building = the sum across all building uses of (the fraction of total floor building floor area for building use i times the allowable fossil fuel-generated energy consumption for building use i)

Equation 1 may be rewritten as: