Heads up: There are no amended sections in this chapter.
New buildings shall comply with the standard as described in Section 4.2.
An extension or increase in the floor area or height of a building outside of the existing building envelope shall be considered additions to existing buildings and shall comply with the standard as described in Section 4.2.
Alterations of existing buildings shall comply with the standard as described in Section 4.2.
Portions of a building envelope, heating, ventilating, air-conditioning, service water heating, power, lighting, and other systems and equipment that are being replaced shall be considered as alterations of existing buildings and shall comply with the standard as described in Section 4.2.
Whenever unconditioned space or semiheated space in a building is converted to a conditioned space, such conditioned space shall be brought into compliance with all the applicable requirements of this standard that would apply to the building envelope, heating, ventilating, air-conditioning, service water heating, power, lighting, and other systems and equipment of the space as if the building was new.
Administrative requirements relating to permit requirements, enforcement by the authority having jurisdiction, locally adopted energy standards, interpretations, claims of exemption, and rights of appeal are specified by the authority having jurisdiction.
The provisions of this standard are not intended to prevent the use of any material, method of construction, design, equipment, or building system not specifically prescribed herein.
If any term, part, provision, section, paragraph, subdivision, table, chart, or referenced standard of this standard shall be held unconstitutional, invalid, or ineffective, in whole or in part, such determination shall not be deemed to invalidate any remaining term, part, provision, section, paragraph, subdivision, table, chart, or referenced standard of this standard.
The provisions of this standard shall not be deemed to nullify any provisions of local, state, or federal law. Where there is a conflict between a requirement of this standard and such other law affecting construction of the building, precedence shall be determined by the authority having jurisdiction.
The standards referenced in this standard and listed in Section 12 shall be considered part of the requirements of this standard to the prescribed extent of such reference. Where differences occur between the provision of this standard and referenced standards, the provisions of this standard shall apply. Informative references are cited to acknowledge sources and are not part of this standard. They are identified in Informative Appendix E.
The normative appendices to this standard are considered to be integral parts of the mandatory requirements of this standard, which, for reasons of convenience, are placed apart from all other normative elements.
The informative appendices to this standard and informative notes located within this standard contain additional information and are not mandatory or part of this standard.
The reference standard reproduction annexes contain material that is cited in this standard but contained in another standard. The reference standard reproduction annexes are not part of this standard but are included in the publication of this standard to facilitate use of this standard.

New buildings shall comply with either the provisions of

  1. Section 5, "Building Envelope"; Section 6, "Heating, Ventilating, and Air Conditioning"; Section 7, "Service Water Heating"; Section 8, "Power"; Section 9, "Lighting"; Section 10, "Other Equipment"; and Appendix I "Required Additional Efficiency Packages," or
  2. Section 11, "Energy Cost Budget Method," or
  3. Appendix G, "Performance Rating Method," using one of the following:

    1. Performance Cost Index Method

      When using Appendix G, the Performance Cost Index (PCI) shall be less than or equal to the Performance Cost Index Target (PCIt) when calculated in accordance with the following:

      PCIt = [BBUEC + (BPFCOST × BBREC)]/BBP

      where

      PCI = Performance Cost Index calculated in accordance with Section G1.2.

      BBUEC = Baseline Building Unregulated Energy Cost, the portion of the annual energy cost of a baseline building design that is due to unregulated energy use.

      BBREC = Baseline Building Regulated Energy Cost, the portion of the annual energy cost of a baseline building design that is due to regulated energy use.

      BPFcost = Building Performance Factor from Table 4.2.1.1. For building area types not listed in Table 4.2.1.1 use "All others." Where a building has multiple building area types, the required BPFcost shall be equal to the area-weighted average of the building area types.

      BBP = Baseline Building Performance.

      Regulated energy cost shall be calculated by multiplying the total energy cost by the ratio of regulated energy use to total energy use for each fuel type. Unregulated energy cost shall be calculated by subtracting regulated energy cost from total energy cost.

    2. Performance Source Energy Index Method

      When using Appendix G, the Performance Source Energy Index (PSEI) shall be less than or equal to the Performance Source Energy Index Target (PSEIt) when calculated in accordance with the following:

      PSEIt = [BBUSE + (BPFsource × BBRSE)]/BBSE

      where

      PSEI = Performance Source Energy Index calculated in accordance with Section G1.2.

      BBUSE = Baseline building unregulated source energy use in units of Btu, the portion of the annual site energy of a baseline building design that is due to unregulated energy use multiplied by the site to source conversion ratios in Table 4.2.1.2 for each fuel type.

      BBRSE = Baseline building regulated source energy use in units of Btu, the portion of the annual site energy of a baseline building design that is due to regulated energy use multiplied by the site to source conversion ratios in Table 4.2.1.2 for each fuel type.

      BPFsource = Building Performance Factor from Table 4.2.1.3. For building area types not listed in Table 4.2.1.3 use "All others." Where a building has multiple building area types, the required BPFsource shall be equal to the area-weighted average of the building area types.

      BBSE = Baseline Building source energy.

Table 4.2.1.1 Building Performance Factor (Cost) (BPFcost)
Building Area Type Climate Zone
4A 5A 6A
Multifamily 0.67 0.67 0.64
Healthcare/ hospital 0.54 0.54 0.51
Hotel/motel 0.62 0.56 0.56
Office 0.54 0.54 0.55
Restaurant 0.56 0.55 0.55
Retail 0.45 0.42 0.44
School 0.45 0.46 0.46
Warehouse 0.42 0.42 0.46
All others 0.53 0.52 0.52

Additions to existing buildings shall comply with either the provisions of Sections 5, 6, 7, 8, 9, and 10, or Section 11 or Normative Appendix G.

Table 4.2.1.2 Site to Source Energy Conversion Ratios
Energy Type New York Ratio
Electricity (Grid Purchase) 2.55
Electricity (On-site Renewable
Energy Installation)
1.00
Natural Gas 1.05
Fuel Oil 1.01
Propane & Liquid Propane 1.01
Steam 1.20
Hot Water 1.20
Chilled Water, Coal, Wood, Other 1.00
When an addition to an existing building cannot comply by itself, trade-offs will be allowed by modification to one or more of the existing components of the existing building. Modeling of the modified components of the existing building and addition shall employ the procedures of Section 11 or Normative Appendix G; the addition shall not increase the energy consumption of the existing building plus the addition beyond the energy that would be consumed by the existing building plus the addition if the addition alone did comply.

Alterations of existing buildings shall comply with the provisions of Sections 5, 6, 7, 8, 9, and 10, or Section 11 or Normative Appendix G, provided, however, that nothing in this standard shall require compliance with any provision of this standard if such compliance will result in the increase of energy consumption of the building.

Exception to 4.2.1.3

Historic buildings need not comply with these requirements.

Table 4.2.1.3 Building Performance Factor (Source) (BPFsource)
Building
Area Type
Climate Zone
4A 5A 6A
Multifamily 0.68 0.68 0.65
Healthcare/hospital 0.56 0.56 0.54
Hotel/motel 0.62 0.56 0.54
Office 0.55 0.55 0.56
Restaurant 0.63 0.64 0.63
Retail 0.45 0.42 0.43
School 0.45 0.45 0.45
Warehouse 0.44 0.46 0.49
All others 0.55 0.54 0.54
Compliance documents shall show all the pertinent data and features of the building, equipment, and systems in sufficient detail to permit a determination of compliance by the building official and to indicate compliance with the requirements of this standard.
Supplemental information necessary to verify compliance with this standard, such as calculations, worksheets, compliance forms, vendor literature, or other data, shall be made available when required by the building official.
Operating and maintenance information shall be provided to the building owner. This information shall include, but not be limited to, the information specified in Sections 6.7.2.2, 8.7.2, and 9.7.2.2.
Materials and equipment shall be labeled in a manner that will allow for a determination of their compliance with the applicable provisions of this standard.
All building construction, additions, or alterations work subject to the provisions of this standard shall remain accessible and exposed for inspection purposes until approved in accordance with the procedures specified by the building official.
Where reporting is required, the building official or other approved agencies shall report to the contractor their findings of conformance and nonconformance for correction.
If the nonconforming work is found not to be corrected within a predetermined time as agreed upon by the contractor, the nonconforming work shall be reported in writing to the building official and design professional. At a time agreed on by the building official or other approved agencies, a final report shall be submitted to the building official and the contractor that outlines the inspection findings and documents the correction of nonconforming work.
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