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


Current through Register 1531, September 27, 2024

C501.2 Delete the exception

C502.1 Revise Section C502.1 as follows:

Add the following first sentence "Additions to an existing building where the addition is up to 100% of the size of the existing building and less than 20,000-sf shall comply with Sections C401.3, C402 through C406, and Section C408. Additions which exceed either of these limits shall comply with the applicable pathway for new construction in C401.2."

C502.2 Revise Section C502.2 as follows:

Remove both exceptions

C503.1 Revise Section C503.1 as follows:

Replace "the requirements of Section C503" with "the requirements of Sections C503, C402, C403, C404, and C405"

Replace Exception 3 with "Where the component performance alternative in Section 402.1.5 is used to comply with this section, the proposed UA shall not be greater than 110 percent of the target UA."

C505.1 Revise Section C505.1 as follows:

Replace "this code" with "Sections C401.3, C402 through C406, and Section C408"

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