Mordialloc vs Mount Martha

The median house price is $1.4M in Mordialloc and $1.4M in Mount Martha, so Mordialloc is the cheaper entry point.

For units, Mordialloc sits at a median of $700K against $810K in Mount Martha, which makes Mordialloc the more affordable unit market and Mount Martha the pricier one.

Over the past year house prices moved +8.1% in Mordialloc and -1.6% in Mount Martha, so recent momentum favours Mordialloc, while Mount Martha went backwards.

Looking back three years, Mordialloc houses are -0.7% and Mount Martha houses -23.1%, so Mordialloc has compounded faster than Mount Martha over the longer window.

Rental vacancy is 0.9% in Mordialloc and 2.0% in Mount Martha, so landlords in Mordialloc face less competition for tenants. Anything under 2% is generally read as a tight market where tenants compete for homes.

Mount Martha is the bigger suburb, with a population of 19,846 against 8,886, roughly 2.2 times the size of Mordialloc; a larger suburb usually means a deeper pool of buyers and tenants.

In short: Mordialloc for a lower purchase price, Mordialloc for recent price momentum, Mordialloc for the tighter rental market. Which matters more depends on whether the investor is buying for cash flow, capital growth or affordability.