Do these rules apply to my landed house?

Answer

The maintenance offence in section 25H does not. The Building Control Act excludes exterior features on detached, semi-detached, terrace and linked houses not in a strata title plan, and features on the lowest level of any building. But regulation 41B applies to any building, so a landed home's external air-con unit must still be installed by a BCA-trained installer, and the general law of negligence still applies if something falls.

From the RRD Field Guide, checked against the sources cited in Air-Con Brackets, Planter Boxes and Sunshades: An Owner's Guide to Exterior Features in Singapore. General information, not advice for your project.

The fuller picture

In Singapore, the person responsible for an exterior feature, such as an air-con bracket, sunshade or planter, must keep it securely fixed so it cannot fall. Since 1 October 2025, failing to do so can bring a fine of up to S$20,000, 12 months' jail, or both. External air-con units must sit on a stainless steel bracket or a concrete ledge, installed by a BCA-trained installer.

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