PART II | ENVIRONMENTAL SUSTAINABILITY MEASURES |
[S 593/2025 wef 30/09/2025] 2B. For the purposes of Divisions 2, 3 and 4 of Part 3B of the Act, a Type 1 building is a building (whether or not served by a prescribed cooling system) with a gross floor area of 5,000 m2 or more, other than the following buildings:| (a) | a building that is used primarily as a data centre; | | (b) | a building that is used as railway premises; | | (c) | a building that is used to provide airport services and facilities; | | (d) | a building that is used to provide port services and facilities; | | (e) | a general industrial building; | | (f) | a light industrial building; | | (g) | a religious building; | | (h) | a residential building; | | (i) | a special industrial building; | | (j) | a utility building. [S 593/2025 wef 30/09/2025] |
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3.—(1) Each of the following is a Type 2 building for the purposes of Division 5 of Part 3B of the Act:| (a) | a single-use building with a gross floor area of 5,000 m2 or more, that is —| (i) | not used for a Type A use or Type B use; and | | (ii) | not served by a large shared cooling system; |
| | (b) | a mixed-use building with a gross floor area of 5,000 m2 or more, where —| (i) | no part of the building is used for a Type A use or Type B use; | | (ii) | there is only one prescribed cooling system serving the building; and | | (iii) | the prescribed cooling system is not a large shared cooling system; |
| | (c) | all the parts of a mixed-use building X that are not used for a Type A use, where —| (i) | the total gross floor area of the parts is 5,000 m2 or more; | | (ii) | there is only one prescribed cooling system serving the parts; | | (iii) | the prescribed cooling system does not serve any part of the building used for a Type A use; and | | (iv) | the prescribed cooling system is not a large shared cooling system; |
| | (d) | each single-use part of a mixed-use building Y, where the single-use part —| (i) | is not used for a Type A use; | | (ii) | has a gross floor area of 5,000 m2 or more; and | | (iii) | is served by one or more prescribed cooling systems, all of which serve the single-use part exclusively; |
| | (e) | a building served by a large shared cooling system where —| (i) | no part of the building is used for a Type A use or Type B use; and | | (ii) | no part of the other buildings served by the large shared cooling system is used for a Type A use or Type B use. [S 579/2022 wef 31/12/2021] [S 593/2025 wef 30/09/2025] |
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(2) In this regulation —| “large shared cooling system” means a prescribed cooling system specified in regulation 4 that serves 2 or more buildings with a total gross floor area of 5,000 m2 or more; |
“mixed-use building X” means a mixed use building where —| (a) | no part of the building is used for a Type B use; and | | (b) | part of the building is used for a Type A use; |
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“mixed-use building Y” means a mixed-use building —| (a) | where no part of the building is used for a Type B use; | | (b) | where part of the building may be used for a Type A use; | | (c) | that comprises 2 or more single-use parts; | | (d) | that is served by more than one prescribed cooling system; and | | (e) | where none of the prescribed cooling systems serving the building is a large shared cooling system; |
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| “single-use part”, in relation to a mixed-use building Y, means all the parts of the mixed-use building Y that are used for the same type of use; |
“Type A use”, in relation to a building, means use of the building —| (a) | as a data centre; | | (b) | as a religious building; | | (c) | as a residential building (other than serviced apartments); or | | (d) | as a utility building; |
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“Type B use”, in relation to a building, means use of the building —| (a) | as an industrial building, an industrial retail building, a light industrial building or a special industrial building; | | (b) | as railway premises; | | (c) | to provide airport services and facilities; or | | (d) | to provide port services and facilities. [S 313/2016 wef 02/01/2017] [S 593/2025 wef 30/09/2025] |
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| Division 2 — Energy-intensive buildings |
[S 593/2025 wef 30/09/2025] | Prescribed methodology in definition of “energy use intensity” |
| 3A. For the purposes of the definition of “energy use intensity” in section 22FA of the Act, the methodology for calculating the annual energy consumption is as specified in the MEI Code. [S 593/2025 wef 30/09/2025] |
| Prescribed threshold level of energy use intensity in definition of “energy use intensity threshold” |
| 3B. For the purposes of the definition of “energy use intensity threshold” in section 22FA of the Act, the threshold level of energy use intensity is as specified in the First Schedule. [S 593/2025 wef 30/09/2025] |
| Prescribed percentage of reduction in energy use intensity in definition of “specified reduction” |
| 3C. For the purposes of the definition of “specified reduction” in section 22FA of the Act, the percentage of reduction in energy use intensity is 10%. [S 593/2025 wef 30/09/2025] |
| Prescribed period for reporting energy use |
| 3D. For the purposes of section 22FF(1) of the Act, the prescribed period is the period of 12 months starting 1 January and ending 31 December (both dates inclusive) in any year. [S 593/2025 wef 30/09/2025] |
| Prescribed grounds for not issuing MEI audit notice, etc. |
3E. For the purposes of sections 22FJ(2)(b)(i) and 22FK(2)(a) of the Act, the prescribed grounds on which the Commissioner of Building Control may choose not to issue, or to cancel, an MEI audit notice in relation to a Type 1 building, are as follows:| (a) | the Type 1 building is being redeveloped or is scheduled to be redeveloped within 5 years; | | (b) | the Type 1 building is undergoing a major energy use change under Part 3B of the Act, or has undergone a major energy use change under Part 3B of the Act (whether before, on or after 30 September 2025) within the past 3 years; | | (c) | the Type 1 building is undergoing the installation, substantial alteration or replacement of a cooling system or other system with high energy consumption (whether or not amounting to a major energy use change); | | (d) | the energy use intensity of the Type 1 building for any one of the preceding 3 years does not exceed the energy use intensity threshold. [S 593/2025 wef 30/09/2025] |
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| Prescribed manner of carrying out energy audit, etc. |
3F.—(1) For the purposes of section 22FN(1)(a)(i) of the Act, the prescribed manner to carry out an audit on the energy use of a Type 1 building is as specified in the MEI Code.(2) For the purposes of section 22FN(1)(a)(ii) of the Act —| (a) | the following cooling systems or other systems with high energy consumption are prescribed for a Type 1 building:| (i) | an air-handling system; | | (ii) | a centralised hot water system; | | (iii) | a chilled water plant; | | (iv) | a unitary air-conditioning system; and |
| | (b) | the prescribed manner to carry out an audit on the energy use of a system mentioned in sub-paragraph (a) is as specified in the MEI Code. |
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(3) For the purposes of section 22FN(1)(a)(iii) of the Act —| (a) | the following cooling systems or other systems with high energy consumption are prescribed for a Type 1 building:| (i) | an air-handling system; | | (ii) | a chilled water plant; and |
| | (b) | the prescribed manner to carry out an audit on the energy efficiency of a system mentioned in sub-paragraph (a) is as specified in the MEI Code. [S 593/2025 wef 30/09/2025] |
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| Prescribed period to carry out energy efficiency improvement plan |
| 3G. For the purposes of section 22FQ(1) of the Act, the prescribed period to carry out an energy efficiency improvement plan is 3 years from the date that the plan is submitted to the Commissioner of Building Control under section 22FO(2) of the Act. [S 593/2025 wef 30/09/2025] |
| Prescribed maintenance period for reduction in energy use intensity |
| 3H. For the purposes of section 22FT(2)(a) of the Act, the prescribed maintenance period to maintain the specified reduction or approved reduction in energy use intensity in relation to a Type 1 building is one year after the date that the certificate of completion (certifying that the measures in the energy efficiency improvement plan have been carried out and completed and the specified reduction or approved reduction in energy use intensity for the Type 1 building has been achieved) is submitted to the Commissioner of Building Control under section 22FQ(1)(b)(i) of the Act. [S 593/2025 wef 30/09/2025] |
| Division 3 — Major energy use change |
[S 593/2025 wef 30/09/2025] | Prescribed cooling systems |
4. Each of the following shall be a prescribed cooling system for the purposes of the definition of “major energy use change” in section 22FA of the Act:| (a) | water-cooled chiller; | | (b) | air-cooled chiller. [S 593/2025 wef 30/09/2025] |
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| Minimum environmental sustainability standard |
5. The minimum environmental sustainability standard for a Type 2 building shall be —| (a) | an environmental sustainability score of not less than 50 points, calculated using the scoring methodology specified in the Code; and [S 593/2025 wef 30/09/2025] | | (b) | such other requirements as may be specified in the Code. [S 593/2025 wef 30/09/2025] |
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| Design score for major energy use change to Type 2 building |
| 6.—(1) A mechanical engineer appointed by the owner of a Type 2 building under section 22FX(1)(a) of the Act shall assess the design score for any major energy use change to the building in the manner specified in the Code. [S 593/2025 wef 30/09/2025] (2) The owner of the Type 2 building shall submit to the Commissioner of Building Control (for approval) the design score assessed by the mechanical engineer —| (a) | in the form set out at the Internet website of the Building and Construction Authority at http://www.bca.gov.sg; and | | (b) | by hand or using the electronic service. [S 593/2025 wef 30/09/2025] |
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(3) The submission under paragraph (2) shall be accompanied by —| (a) | the declaration provided by the mechanical engineer to the owner under section 22FX(7)(c)(ii) of the Act; [S 593/2025 wef 30/09/2025] | | (b) | such other documents as may be specified in the Code; and | | (c) | the appropriate fee specified in the Second Schedule. [S 593/2025 wef 30/09/2025] |
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| Lapsing of approval of design score |
| 7. Any approval of a design score for a major energy use change to a Type 2 building granted by the Commissioner of Building Control under section 22FX of the Act shall lapse if no works in respect of that major energy use change have commenced within one year after the date of the approval. [S 593/2025 wef 30/09/2025] |
| As-built score of Type 2 building |
| 8.—(1) A mechanical engineer appointed by the owner of a Type 2 building under section 22FX(1)(a) or 22FZA(5)(a) of the Act shall assess the as-built score of the building in the manner specified in the Code. [S 593/2025 wef 30/09/2025] (2) The owner of the Type 2 building shall, within 30 days after the date of completion of the major energy use change to the building, submit to the Commissioner of Building Control —| (a) | the as-built score assessed by the mechanical engineer; | | (b) | a declaration by the mechanical engineer certifying the correctness of the as-built score; | | (c) | a declaration by the mechanical engineer whether the as-built score meets the minimum environmental sustainability standard applicable to the building; and | | (d) | such other documents as may be specified in the Code. [S 593/2025 wef 30/09/2025] |
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(3) Each of the documents required to be submitted to the Commissioner of Building Control under this regulation shall be submitted —| (a) | in the form set out at the Internet website of the Building and Construction Authority at http://www.bca.gov.sg; and | | (b) | by hand or using the electronic service. [S 593/2025 wef 30/09/2025] |
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