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A buyers agent in Southern Perth is a licensed agent who acts only for the buyer, never the seller. Citadel Agency is a buyers agency based in Preston, Victoria, that helps investors buy in Southern Perth and across Australia, with suburb research, on and off market sourcing, due diligence and negotiation through to settlement.
Consumer Affairs Victoria describes a buyer’s agent as a licensed estate agent who, for a fee, acts for a buyer instead of a seller. A selling agent works for the vendor. We work only for you: we find and shortlist properties, look at ones that are never advertised, check each one, and negotiate or bid at auction for you.
Citadel Agency was founded by Omar De Guise and Jadd Chahal. Every purchase is backed by our own suburb research, so your Southern Perth decision is made on evidence, not on a sales pitch.
Source: Consumer Affairs Victoria. Check any agent on the public register.
Southern Perth covers the Rockingham, Kwinana, Cockburn, Armadale and Gosnells council areas. The orange outline on the map shows the boundaries.
COUNCIL AREAS
Rockingham, Kwinana, Cockburn, Armadale, Gosnells
LAND AREA
1,232 km²
Boundary: Australian Bureau of Statistics, ASGS 2021 (CC BY 4.0). Map data © OpenStreetMap contributors.
| Population | 614.3K people in Rockingham, Kwinana, Cockburn, Armadale and Gosnells in June 2025 (grew 2.9% that year, ABS) |
|---|---|
| Projection | 745.8K projected for 2036 across the five council areas (WA Tomorrow 12, Band C (median forecast), WA Government) |
| Of occupied homes are rented | 25% (45,129 rented dwellings across the five council areas, ABS 2021 Census) |
| Major projects | Thornlie-Cockburn Line (opened); Byford Rail Extension (opened); Tonkin Highway Extension and Thomas Road Upgrade (late 2028) |
| Government | Western Australia is led by Premier Roger Cook (Labor). |
| Latest rule changes | Rent increases limited to once a year (29 July 2024); New bond release process (March 2026); Higher first home buyer duty thresholds (7 May 2026) |
| Citadel purchases here | None published yet. See our results across Australia |
Western Australia is led by Premier Roger Cook (Labor). These are the changes that matter most to investors.
Perth's south mixes industrial and port jobs around Kwinana and Cockburn with large new housing estates in Rockingham, Armadale and Byford, and Kwinana grew 4.6% in the year to June 2025, the fastest of the five council areas. We weigh that, and the new Thornlie-Cockburn and Byford rail links, against supply and holding costs before recommending any suburb in Perth's south.
Population: ABS, Regional population, 2024-25 (released 31 March 2026), WA Tomorrow 12, LGA population forecasts 2022 to 2036, Department of Planning, Lands and Heritage, ABS 2021 Census QuickStats, Rockingham, ABS 2021 Census QuickStats, Kwinana, ABS 2021 Census QuickStats, Cockburn, ABS 2021 Census QuickStats, Armadale, ABS 2021 Census QuickStats, Gosnells. Projections are government projections, not forecasts by Citadel Agency.
Values from comparative market analyses (CMA). Suburb only, no client details. Past performance is not a reliable indicator of future performance.
I have purchased multiple properties over the years however was stuck for over 6months trying to get into the Melbourne and Tassie market. I reached out to the team and in a few weeks they secured me 2 great properties. I will use Citadel for all future purchases going forward. 10/10
A buyers agent in Southern Perth acts only for the purchaser. We set your brief, research suburbs on growth, rental demand, supply and risk, find on market and off market property, check each one, and negotiate or bid for you through to settlement.
Yes, when Southern Perth suits a client's strategy and budget. We research suburbs across Australia and only recommend Southern Perth when the numbers work for you. Our recent purchases are listed by suburb on our results page.
No. Most of our clients buy interstate. We research, arrange inspections through local partners, negotiate and manage the purchase to settlement, and keep you updated at every step.
The Cities of Rockingham, Kwinana, Cockburn, Armadale and Gosnells had about 614,333 residents combined at 30 June 2025, up 2.9% on the year (ABS, Regional population, March 2026). Kwinana grew fastest at 4.6%. WA Tomorrow 12 forecasts about 745,755 across the five areas by 2036 (Band C, the median forecast).
The $1.35 billion Thornlie-Cockburn Line opened in June 2025 with new stations at Nicholson Road and Ranford Road, and the $1.33 billion Byford Rail Extension opened in October 2025 (WA Government, Building for Tomorrow).
The Australian and WA governments have committed $1.1 billion to upgrade Anketell Road between Leath Road and Abercrombie Road, to support the construction and future operation of the new Westport container terminal (WA Government, 7 May 2026).
At the 2021 Census, the share of occupied homes that were rented ranged from 22.1% in Armadale to 27.6% in Kwinana (ABS QuickStats). Across the five areas the share was about 25%.
It depends on the price, the type of property, whether you will live in it or rent it out, whether you are a first home buyer and whether you are a foreign buyer. Our free stamp duty calculator uses the published Western Australia rates, and your conveyancer will confirm the final amount.
Book a free 30 minute strategy call. We look at your budget, borrowing and goals, and tell you honestly whether Southern Perth fits your plan.
We research suburbs across Australia to find the right location for each client's plan.
