Statute Details
- Title: Building Control (Environmental Sustainability Measures for Existing Buildings) Regulations 2013
- Act Code: BCA1989-S383-2013
- Type: Subsidiary legislation
- Enacting Act: Building Control Act (Cap. 29), section 49
- Commencement: 1 July 2013
- Current status: Current version as at 26 March 2026
- Key Parts: Part I (Preliminary); Part II (Environmental Sustainability Measures); Part III (Energy Auditors and Energy Audits of Building Cooling Systems); Part IV (Miscellaneous)
- Key provisions (high level): Definitions (including “gross floor area”); building typology (Type 1/Type 2); energy-intensive building thresholds and reporting; energy audits and energy efficiency improvement plans; major energy use change requirements; energy auditor registration/qualification and disciplinary grounds; fees (no refund)
- Schedules: First Schedule (energy use intensity threshold); Second Schedule (fees)
- Codes referenced: Code on Environmental Sustainability Measures for Existing Buildings; Code on Periodic Energy Audit of Building Cooling System; Code on Mandatory Energy Improvement for Existing Buildings (as updated by amendments)
What Is This Legislation About?
The Building Control (Environmental Sustainability Measures for Existing Buildings) Regulations 2013 (“ESM Regulations”) is Singapore’s regulatory framework for improving the environmental sustainability performance of existing buildings. In practical terms, it creates compliance obligations for owners and occupiers of certain buildings—especially those with significant energy consumption—by requiring energy audits, setting measurable energy performance thresholds, and mandating energy efficiency improvement actions where specified.
The Regulations operate alongside policy “Codes” issued by the Building and Construction Authority (“BCA”). While the Regulations establish the legal architecture—who must do what, when, and under what conditions—the detailed technical and procedural requirements are largely implemented through the referenced Codes (for example, the Energy Audit Code and the MEI Code). This structure is common in Singapore’s building control regime: the subsidiary legislation provides enforceable triggers and obligations, while the Codes provide the technical methodology and standards.
From a practitioner’s perspective, the most important feature is that the Regulations do not treat all buildings the same. They classify buildings into categories (notably “Type 1” and “Type 2”) and then impose different obligations depending on the building’s energy profile and whether there is a “major energy use change”. The Regulations also define key terms (including “gross floor area”) because building eligibility and thresholds often depend on floor area and building use class.
What Are the Key Provisions?
1. Preliminary provisions: citation, commencement, and definitions
Part I sets the foundation. Regulation 1 provides the citation and commencement date (1 July 2013). Regulation 2 contains definitions that link the Regulations to other statutory instruments and to BCA-issued Codes. Notably, the Regulations define “electronic service” to allow submissions through the electronic service specified by the Commissioner of Building Control. This matters for compliance strategy: failure to use the correct submission channel can affect whether a notice, plan, or audit-related document is considered properly filed.
The Regulations also include a detailed definition of “gross floor area” in Regulation 2A. This is critical because many building control thresholds and eligibility criteria depend on gross floor area. Regulation 2A prescribes what floor spaces are included (for example, covered floor space up to the middle of external walls; certain open-area commercial uses; approved balconies/private enclosed spaces/private roof terraces in non-landed buildings; and spaces within strata areas). It also prescribes excluded areas by reference to the Urban Redevelopment Authority’s Gross Floor Area Handbook and its internet publication. For legal practitioners, this cross-referencing is a common source of disputes: parties may argue that particular spaces should be excluded or included, affecting whether a building falls within a regulated category.
2. Building typology and energy-intensive building framework
Part II is the core compliance engine. It begins with Division 1 (general) and sets out the categories of buildings. Regulation 2B addresses “Type 1 buildings”, while Regulation 3 addresses “Type 2 buildings”. Although the extract provided does not reproduce the full text of these provisions, the structure indicates that the Regulations distinguish buildings based on use and/or performance characteristics and then tailor subsequent obligations.
Division 2 focuses on energy-intensive buildings. Regulations 3A to 3D define and operationalise the concept of “energy use intensity” (EUI) and the thresholds that trigger action. In particular, the Regulations prescribe:
- the methodology for calculating energy use intensity (Regulation 3A);
- the threshold level of energy use intensity (Regulation 3B), with the threshold also reflected in the First Schedule;
- the specified reduction in energy use intensity (Regulation 3C), i.e., the percentage reduction expected; and
- the reporting period for energy use (Regulation 3D).
These provisions are designed to convert environmental policy into measurable, auditable performance requirements. For compliance counsel, the key legal question is not merely whether a building is “energy-intensive” in a broad sense, but whether the building’s calculated EUI meets or exceeds the prescribed threshold and whether the required reduction and reporting timelines are satisfied.
3. Notices, audits, improvement plans, and maintenance periods
Regulations 3E to 3H address the procedural and substantive steps that follow when a building is subject to the energy-intensive regime. Regulation 3E prescribes grounds for not issuing a “MEI audit notice, etc.” (Mandatory Energy Improvement for Existing Buildings). This is important because it creates legally defined circumstances where the Commissioner/BCA may refrain from issuing a notice—potentially due to exemptions, timing, or other regulatory conditions.
Regulation 3F prescribes the manner of carrying out an energy audit. Regulation 3G sets the prescribed period to carry out an energy efficiency improvement plan. Regulation 3H sets the prescribed maintenance period for reduction in energy use intensity. Together, these provisions establish a compliance lifecycle: audit → plan → implementation → maintenance of performance. Practically, this means owners must not only undertake improvements but also sustain the reduction over the legally specified period.
4. Major energy use change and performance scoring
Division 3 addresses major energy use change. Regulation 4 prescribes cooling systems. Regulation 5 sets a minimum environmental sustainability standard. Regulations 6 to 8 deal with “design score” and “as-built score” for Type 2 buildings, including lapsing of approval of design score. This is a familiar regulatory pattern: a building may receive approval based on design assumptions, but if the actual “as-built” conditions differ or if the approval lapses, the building may need to re-submit or meet updated requirements.
For practitioners, the design score/as-built score mechanism is often where technical evidence becomes legally relevant. Counsel should anticipate that disputes may arise over measurement, commissioning outcomes, and whether the as-built performance meets the minimum standard. The Regulations’ legal effect is to make these scores and standards enforceable, even though the technical scoring methodology is likely detailed in the relevant BCA Code.
5. Energy auditors: registration, qualifications, and disciplinary grounds
Part III ensures that energy audits are carried out by competent professionals. Regulation 9 requires that an energy audit be conducted in accordance with the Energy Audit Code. Regulation 10 sets qualifications and experience requirements for an energy auditor. Regulation 11 provides for an application fee for registration as an energy auditor.
Regulation 12 prescribes reasons for cancellation or suspension of an energy auditor’s registration. This is significant for enforcement and risk management: if an auditor’s registration is suspended or cancelled, audits they performed may be challenged, and compliance may be delayed or require re-performance. For legal teams advising building owners, it is therefore prudent to verify auditor registration status and to ensure audit documentation is consistent with the Energy Audit Code.
6. Miscellaneous: fees and no refund
Regulation 13 provides that there is no refund of fees. This matters for administrative law and commercial planning: if an application is withdrawn or refused, the fee position is fixed by the Regulations.
How Is This Legislation Structured?
The Regulations are organised into four Parts and two Schedules.
Part I (Preliminary) contains the citation and commencement provision, general definitions, and a specialised definition of “gross floor area” (Regulation 2A) that cross-references planning and development control materials.
Part II (Environmental Sustainability Measures) is divided into three Divisions: (i) general building typology (Type 1/Type 2); (ii) the energy-intensive building regime (EUI methodology, thresholds, reporting, audits, improvement plans, and maintenance); and (iii) major energy use change requirements (cooling systems, minimum standards, scoring, and lapsing).
Part III governs energy auditors and the conduct of energy audits of building cooling systems, including registration qualifications and grounds for regulatory action against auditors.
Part IV (Miscellaneous) includes administrative matters such as fee refund rules.
Schedules include the First Schedule (energy use intensity threshold) and the Second Schedule (fees). These schedules are often where practitioners will look first for the numerical thresholds and fee amounts that drive compliance decisions.
Who Does This Legislation Apply To?
The Regulations apply to owners and relevant stakeholders of existing buildings that fall within the defined building categories and energy performance triggers. While the extract does not reproduce the full eligibility criteria for Type 1 and Type 2 buildings, the Regulations clearly contemplate that building use classes and building characteristics (including gross floor area) determine whether obligations arise.
In addition, the Regulations apply to registered energy auditors and those seeking registration, because Part III imposes qualification requirements and creates grounds for cancellation or suspension. The practical effect is that compliance is not only about the building owner’s duties; it also depends on engaging auditors who meet the legal requirements and follow the prescribed audit methodology.
Why Is This Legislation Important?
The ESM Regulations are important because they translate Singapore’s environmental sustainability goals into enforceable building control obligations. For practitioners, the legal significance lies in the combination of: (i) measurable performance metrics (energy use intensity thresholds and required reductions); (ii) procedural compliance steps (notices, audits, improvement plans, and reporting); and (iii) enforceable technical standards through BCA Codes.
From an enforcement and litigation-risk perspective, the Regulations create multiple potential points of non-compliance: incorrect calculation of gross floor area; failure to meet prescribed EUI thresholds; late or non-compliant energy audits; inadequate improvement plans; failure to maintain reductions for the prescribed maintenance period; and use of auditors who are not properly qualified or registered. Each of these can lead to regulatory action and may also affect corporate governance, disclosure obligations, and contractual arrangements between building owners, facility managers, and energy service providers.
Finally, the Regulations’ amendment history (including amendments in 2016, 2021, 2022, and 2025) underscores that the compliance landscape can change over time—particularly where definitions and referenced Codes are updated. Counsel should therefore always confirm the current version and the effective dates of amendments when advising on compliance timelines and documentation requirements.
Related Legislation
- Building Control Act (Cap. 29) — the enabling Act (section 49) and related provisions on environmental sustainability measures for existing buildings (including section 22FA referenced for “gross floor area”).
- Code on Environmental Sustainability Measures for Existing Buildings (BCA) — referenced by the Regulations as “the Code”.
- Code on Periodic Energy Audit of Building Cooling System (BCA) — referenced as the “Energy Audit Code”.
- Code on Mandatory Energy Improvement for Existing Buildings (BCA) — referenced as the “MEI Code” (noting that the extract indicates amendments affecting the definition).
- Planning Act 1998 — definitions of “planning permission” and related planning concepts.
- Planning (Use Classes) Rules (R 2) — definitions of building types such as “industrial building”, “light industrial building”, and related categories.
- Urban Redevelopment Authority Act 1989 and the Gross Floor Area Handbook — used to determine excluded areas for gross floor area calculations.
- Civil Aviation Authority of Singapore Act 2009 — for definitions relating to “airport services and facilities”.
- Maritime and Port Authority of Singapore Act 1996 — for definitions relating to “port services and facilities”.
- Rapid Transit Systems Act 1995 — for definitions relating to “railway premises”.
- Land Titles (Strata) Act 1967 — for strata-related concepts used in the gross floor area definition.
Source Documents
This article provides an overview of the Building Control (Environmental Sustainability Measures for Existing Buildings) Regulations 2013 for legal research and educational purposes. It does not constitute legal advice. Readers should consult the official text for authoritative provisions.