Good point, Meconium. My thoughts:
1, The level of First home buyer (FHB) activity is relatively low at the moment (AFG reported FHB comprised ~15% of all loan applications - from between 30-35% last year). This is probably due to the fed and state government stimulus (e.g. FHOB) last year, which induced FHB to bring forward their purchasing decision (reducing demand from FHB this year). This is further compounded by the lower affordability and increasing interest rate. Bottom end is typically the entry market for FHB. This explanation suggests the bottom end may suffer.
2, That leaves the investors and upgraders dominating the current property market. Investors tend to make more logical decisions when it comes to investments (based on return). Despite expectations of higher rent in the near future, it is still insufficient. Melbourne metro yield is relatively low around 3.5-4%. Several analysts and data providers (RP data, APM and even RBA) anticipate a lower than average capital appreciation in Melbounre in general, over the coming years. It suggests the top end might not be performing as well as previous.
Looking at the REIV median price graphs linked, the bottom end in general has outperformed the top end (with exceptions) in terms of capital growth in the sept quarter. I suspect this trend will continue until the end of the financial year (assuming interest rate and unaffordability continues its current trend). Given the stable economy, relatively low cash rate, low unemployment rate, housing supply constraint, unpredictable alternative investment classes, relaxed rule re properties in SMSF, I think the Melbourne property market will experience a more subdued growth and possibly even negative growth. Like all investment classes, property market runs in cycle.
Personally, I think short term vanilla property investors (i.e. investors with no intention of adding value to their proeprties) may be disappointed with the total property return in the next 12-18 months - in both top or bottom end.
You seem to be doing well, but taking just your last comment on face value, you may like to consider a bit of diversification.
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The above material is only general in nature and not intended to be specific to the individual circumstances. Seek independent professional advice before making any decisions or relying on the information provided.