Code of Massachusetts Regulations
225 CMR - DEPARTMENT OF ENERGY RESOURCES
Title 225 CMR 23.00 - Massachusetts Front-end Amendments to the International Energy Conservation Code 2021 Massachusetts Stretch Energy Code - 2023 Commercial Amendments to IECC2021
Chapter 5 - [CE] EXISTING BUILDINGS
Section CC101 - GENERAL

Universal Citation: 225 CMR 23.00 MA Code of Regs CC101

Current through Register 1531, September 27, 2024

CC101.1 Replace Section CC101 as follows:

CC101.1 Purpose. The purpose of this appendix is to form the commercial building provisions of the Massachusetts Municipal Opt-in Specialized Code to supplement the Massachusetts Stretch Energy Code and to provide a compliance pathway for buildings that require renewable energy systems of adequate capacity to achieve net zero carbon.

CC101.2 Replace Section CC101.2 as follows:

CC101.2 Scope. This appendix applies to new buildings that are addressed by the Municipal Opt-in Specialized Code. The Specialized Code maintains the energy efficiency requirements of the Stretch Code for all building types except multi-family. CC103 lays out the additional clean energy requirements for all building types.

Residential buildings and dwelling units within mixed use buildings shall comply as follows:

(1) New dwelling units over 4,000 square feet in conditioned floor area in Mixed Fuel Buildings shall comply with the Zero Energy pathway and Section CC103 or with residential code Section RC102.

(2) New R-use buildings over 12,000 square feet in conditioned floor area shall comply in accordance with Table CC101.2.

(3) New R-use buildings less than or equal to 12,000 square feet in conditioned floor area shall comply with Residential Appendix RC.

TABLE CC101.2 MULTI-FAMILY AND R-USE COMPLIANCE

R-Use buildings over 12,000 sf, or R-Use portions over 12,000 sf in mixed-use buildings	Compliance Path options by permit submittal date
	C407.3 Passive house	C407.1 Targeted Performance	C407.4 HERS Index
Up to 5 stories	Required from Jan 1, 2023
6 stories and higher	Required from Jan 1, 2024	Optional until Jan 1, 2024	Optional until Jan 1, 2024

Exceptions:

1. Detached one- and two-family dwellings and townhouses as well as Group R-2 buildings three stories or less in height above grade plane, manufactured homes (mobile dwellings), and manufactured houses (modular dwellings). These buildings and dwelling units shall comply with Residential Appendix RC under the Specialized energy code.

2. Buildings that use neither electricity nor fossil fuel.

CC101.3 Add Section CC101.3 as follows:

CC101.3 Compliance. New buildings shall demonstrate compliance with Sections CC101.4, CC101.5 and one of the following pathways:

1. Zero Energy Pathway: Buildings shall comply with Section CC103 and demonstrate that they are Zero Energy Buildings in accordance with Equation CC-1. Mixed Fuel Buildings with any capacity for on-site fossil fuel use shall be pre-wired for future electrification of all fuel uses in accordance with Section CC105.

2. All-Electric Pathway: Buildings shall comply with Section CC104.

3. Mixed Fuel Pathway: Mixed Fuel Buildings other than Zero Energy Buildings with any capacity for on-site fossil fuel use shall comply with CC105 and CC106. The following uses shall be excluded when determining whether new buildings will have on-site fossil fuel use:

a. On-site back-up generators using fossil fuels

b. On-site refuelling of vehicles or outdoor equipment using fossil fuels

CC101.4 Add Section CC101.4 as follows:

CC101.4 Minimum Building Energy Efficiency. New buildings shall comply with Section C401.2.1 or C401.2.2. as prescribed in Section C401. Existing buildings shall comply with Chapter 5 as amended.

CC101.5 Add Section CC101.5 as follows:

CC101.5 Minimum Electric Vehicle Ready Parking Requirements. New parking spaces shall provide electric vehicle ready spaces in accordance with Section C405.13 and Table C405.13.

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