Noise rules, council approval and body corporate consent for outdoor units in Perth

This guide is general information, not legal advice. Council rules, strata by-laws and noise regulations can vary and change, so confirm current requirements with your local council, strata manager or installer before proceeding.

Most air conditioning installations in Perth don’t need any special approval, but a few situations are worth checking before the outdoor unit goes up, particularly around noise, council rules and shared-building consent. Our air conditioning installation hub lists Perth contractors who can talk through placement and compliance as part of a quote.

Noise regulations

Western Australia’s environmental noise regulations set assigned noise levels that apply to equipment like air conditioning condensers, and they vary depending on the time of day and the zoning of the surrounding area. This is one of the practical reasons installers think carefully about where an outdoor unit sits, keeping it away from a neighbour’s bedroom window where the layout allows, and considering how sound carries between close-set Perth homes. A good installer will talk through placement with you rather than just putting the compressor wherever is structurally easiest.

If a noise issue does come up after installation, most disputes are resolved directly between neighbours or through your local council’s environmental health team, who can assess whether a unit is exceeding permitted levels for the time of day.

Council approval

For a straightforward like-for-like replacement, swapping an old unit for a new one in the same spot, council approval generally isn’t required. It’s more likely to come up in a few specific situations:

• A new outdoor unit position, especially if it’s visible from the street or close to a boundary.
• Heritage-listed properties, where external alterations often need council sign-off regardless of how minor they seem.
• Some townhouse or unit developments with building rules that go beyond standard council requirements.

If your situation isn’t a simple replacement, it’s worth a quick check with your local council or asking your installer directly, since they typically deal with this across many jobs and know the local requirements.

Strata and body corporate consent

If you live in an apartment, townhouse or any property managed under a strata scheme, check the by-laws before booking an installation. Many strata schemes have specific rules about external fixtures, including where a condenser unit can be mounted, what it can look like, and whether formal consent is needed before work starts. Skipping this step can mean removing or relocating a unit after the fact, which costs far more than getting sign-off first.

Situation	Approval likely needed?
Like-for-like replacement, same position	Usually not
New outdoor unit position or visible from street	Possibly, check with council
Heritage-listed property	Likely, check before any external work
Apartment or strata property	Often, check strata by-laws first

A practical checklist before installation day

Before your installer arrives, it’s worth confirming three things: whether your property is heritage-listed or in a strata scheme that needs consent, roughly where the outdoor unit will sit relative to your own and any neighbouring bedroom windows, and whether the position matches what was agreed at quoting stage. Raising these questions upfront is far simpler than dealing with a complaint or a relocation request after the unit is already mounted. For what else to expect once installation day itself arrives, see our step-by-step guide to what happens during an air conditioning installation.

Talking to neighbours before installation

For a straightforward replacement in an existing position, a heads-up to neighbours usually isn’t necessary. For a new unit position, especially close to a shared boundary or a neighbour’s bedroom window, a quick conversation before the work starts can head off a complaint later. It’s a small step, but it tends to go a long way toward keeping things friendly if the outdoor unit’s hum becomes something either household notices.

If you’re planning a renovation or extension

Anyone extending or significantly renovating a property should factor air conditioning placement into the design conversation early, rather than treating it as an afterthought once the building work is finished. An extension that adds a bedroom close to an existing outdoor unit, or removes the buffer space that used to sit between a compressor and a neighbouring fence line, can turn a previously fine setup into a noise issue. Raising it with your builder or designer at the planning stage is far easier than relocating a unit after the fact.

For more on how we assess contractors on compliance and communication, see our methodology page. Browse the home page for other guides on installation and buying decisions in Perth.