Perth's Planning Shake-Up: What the R-Codes Overhaul Means for Property Owners and Investors

Perth is about to get a lot easier to subdivide — and that has significant implications for property owners, investors, and anyone watching the city's housing market closely.

The Western Australian government has announced major changes to the Residential Design Codes (R-Codes), the planning rules that govern how densely land can be developed across Perth. The overhaul is designed to allow thousands more homeowners to subdivide their blocks, directly targeting the city's persistent shortfall against its infill housing targets.

Why Perth's Infill Targets Have Been Falling Short

For years, Perth has set ambitious goals for so-called infill development — building new homes within the existing urban footprint rather than sprawling outward into greenfield land on the city's fringes. The idea is sensible: infill reduces infrastructure costs, keeps communities connected, and makes better use of land already serviced by roads, water, and public transport.

The problem is Perth has consistently missed those targets. Construction costs, complex approvals, and restrictive zoning rules have all acted as brakes on the kind of medium-density development the city needs. The R-Codes overhaul is a direct response to that failure.

What the Changes Actually Allow

Under the proposed shake-up, more residential properties across Perth will become eligible for subdivision. In practical terms, that means homeowners who previously couldn't split their block — because of minimum lot size requirements or density code restrictions — may now be able to do so.

This is a meaningful shift. Subdivision has historically been one of the most reliable wealth-creation strategies in Australian property, but access to it has always depended heavily on where your property sits within the planning framework. Broadening that access across more of Perth's suburbs opens the door to a larger pool of landowners.

What It Means for Perth Property Values

Planning liberalisation of this scale tends to have a nuanced effect on values. In the short term, properties in suburbs newly eligible for subdivision often attract a premium — buyers with a development eye are willing to pay more for a block with genuine upside. Investors and small developers will be scanning suburb maps closely once the changes are confirmed.

At the same time, a meaningful increase in housing supply — if the policy delivers as intended — could moderate price growth over the medium term. Perth's market has run hard in recent years, and more homes coming onto the market would, in theory, ease some of that pressure.

The balance between those two forces will play out differently suburb by suburb, depending on land size, proximity to amenity, and local demand.

Key Things to Know If You Own Property in Perth

• Check your R-Code zoning. Your local council or the Western Australian Planning Commission website can tell you what density code currently applies to your land.
• Understand minimum lot sizes. Subdivision approval depends on the resulting lots meeting minimum size requirements under the relevant code.
• Factor in costs. Subdivision involves surveying, WAPC fees, potential contributions for infrastructure, and the cost of servicing the new lot. It is not a free lunch, but for the right block it can be highly profitable.
• Engage a town planner early. A licensed planning consultant can tell you quickly whether your property is likely to qualify and what the approval pathway looks like.

What This Means for You

If you own a sizeable residential block in Perth, now is a good time to revisit whether your property's development potential has changed. The R-Codes overhaul is not yet finalised, but the direction of travel is clear — the WA government wants more homes built within existing suburbs, and it is removing planning obstacles to make that happen.

For buyers, the announcement is a reminder that zoning and density codes are not static. A suburb that looks purely residential today can look very different in five years. Building an understanding of the planning framework into your due diligence — whether you're buying in Perth, Melbourne, or anywhere else — is one of the most underrated skills in property.

For investors with capital and an appetite for development, Perth's policy shift could open up opportunities that simply did not exist six months ago. Watch this space as the detail of the changes becomes clearer.