Buying for Tomorrow: How Beagl Finds Perth Blocks With Future Subdivision Potential
Western Australia is in the middle of a significant planning shake-up, with proposed changes to the Residential Design Codes that could open up subdivision opportunities for tens of thousands of Perth properties.
If the proposed changes go ahead, properties that currently can't be subdivided under the existing R-Code requirements could become eligible.
For buyers, that changes the question from:
“What can I do with this block today?”
to:
“What might I be able to do with it in five or ten years?”
This article breaks down what is actually changing, which types of Perth properties could benefit, and how our team builds future subdivision potential into a buyer's search from day one.
Because you're not just buying a home. You're buying options.
Understanding the R-Code Reforms
What's on the table?
On 2 July 2026, Planning and Lands Minister John Carey announced proposed reforms to the R-Codes, the rules that govern how residential land can be built on and subdivided across WA.
The proposed changes are being described by the State Government as one of the most significant overhauls of the R-Codes in decades, with a focus on simplifying the planning system and creating more opportunities for infill housing.
The headline change affects R20 and below, the density coding used for many standard suburban blocks.
Under the current R20 requirements, subdividing a lot requires an average lot size of 900sqm across the resulting lots.
The proposal would replace that averaging rule with a straightforward minimum lot size, which could open the door for blocks around 700sqm to be split.
The State Government estimates this single change could make more than 50,000 existing Perth properties newly eligible for subdivision, with the potential impact particularly relevant to established, low-density suburbs across Perth.
Other proposed changes include:
Where things stand right now
It is worth being clear-eyed here: these are proposed changes, not settled law.
The WA Government says the proposed changes are expected to be released for public consultation in late 2026. Subject to consultation, endorsement and approval processes, amendments are anticipated to begin coming into effect from mid to late 2027.
Until then, development and subdivision applications continue to be assessed under the current planning framework.
There have also been separate transitional R-Code arrangements affecting higher-density areas. Those arrangements concluded on 10 April 2026, so it is important not to confuse those changes with the current R-Code review.
The two sets of changes are related, but they are not the same thing.
Which Suburbs Stand to Gain the Most?
The blocks with the most to gain from the proposed R20 change share a few traits.
They may:
Corridors north and south of the Perth CBD, where original subdivisions were generous by today's standards, are exactly the kind of stock this reform could affect.
But that does not mean every 700sqm block in every suburb suddenly becomes a subdivision play.
Frontage width, access, easements, overlays such as bushfire or flood risk, and the local council's own planning framework can all still matter.
The R-Codes are applied by local governments, and specific development and subdivision proposals still need to be assessed against the applicable planning framework.
This is where a lot of buyers get caught out.
They see a headline about 50,000 newly eligible properties and assume theirs is one of them, without checking the details that actually determine whether a block has genuine potential.
How Beagl Builds Future Optionality Into Your Search
Reading zoning like a development brief, not a listing detail
Every property we assess already goes through a due-diligence layer that checks R-Codes zoning, title particulars, easements and overlays.
When a client's brief includes long-term flexibility, we extend that check to ask a different question:
Not just what's permitted today, but what might the block's dimensions, orientation and current coding suggest about its future potential if the rules shift in the direction they're currently heading?
That distinction matters.
We're not treating proposed planning changes as a guarantee.
We're looking at whether a property has characteristics that could give the owner more options in the future.
Cross-referencing local structure plans and council intentions
State-level R-Code reform is only part of the picture.
Local structure plans, scheme amendments and council-level planning reviews can also influence what happens in a particular area.
Some local governments are more proactive about planning for increased density around transport and activity centres than others.
Our team tracks these at a suburb level so we can flag properties sitting in areas where local planning is evolving, rather than simply looking at block size on paper.
Thinking one owner ahead
A block that doesn't quite work for subdivision today can still be an interesting property if it is positioned to work in future.
That could be through state reform, a local scheme amendment, or simply growing demand for infill in that pocket.
We look at these scenarios in much the same way we consider rental yield or renovation potential for investors:
What does this asset look like now, and what could it look like if the rules around it change?
Balancing Upside Against the Caveats
None of this is about betting the farm on a reform that hasn't passed.
We treat future subdivision or development potential as a bonus layer on top of a property that already stacks up as a sound buy on its current fundamentals.
Right location. Right land size. Right price.
If the reforms proceed, there may be additional upside.
If they don't, you still want to own a well-chosen property in a suburb with strong underlying demand.
That is the important distinction.
What to Look For If Optionality Matters to You
If you're buying with an eye on future subdivision potential, a few things are worth prioritising in your brief.
Block size
Lot sizes at or above roughly 700 - 800sqm may be worth investigating, particularly where the property is currently coded R20 or below.
Size alone, however, does not determine subdivision potential.
Block shape and frontage
Regular block shapes with usable frontage width can provide more flexibility than awkward or constrained sites.
Corner blocks and battle-axe-friendly lots can also be worth investigating where future subdivision is a consideration.
Access and easements
Access can make a significant difference.
Easements, existing driveways and the way a block connects to the street should all be checked before you assume a property will work for future subdivision.
Location and planning framework
Established suburbs and areas where local planning is already considering increased density may be worth keeping on the radar.
The key is looking at the wider planning picture, rather than simply searching for a particular block size.
In Conclusion
The proposed R-Code reforms could represent a significant change to how Perth suburbs can grow, but “proposed” is the operative word.
Consultation is expected in late 2026, with implementation anticipated from mid to late 2027, subject to the relevant approval processes.
The key takeaways:
Thinking About Future Subdivision Potential?
If you want to know whether a property you're considering has genuine future subdivision or development potential, book a free consult with our team.
We'll walk you through what we're seeing at a suburb level and whether it's worth factoring into your search.
This article provides general information only and does not constitute planning, legal, financial or development advice. Proposed planning reforms may change and buyers should obtain independent professional advice relevant to their individual circumstances before making a property decision.
