$270 as is yes, it would be cheapest rental on the market at the moment.
$280 after renovation would also be cheap compared to market.
Gumtree and subdivision wouldnt be an issue, the money to demolish and develop isn't there just yet. Give it 5-10years growth.
Sit and forget, on $280p/w its about $1000 negative cf, after 1-3 years with rent increase would be cf+.... also remembering with tax benefits would be net cf+
It looks pretty neat and tidy as it is. Maybe White Knight, shower screen and new vanity in bathroom.
Vacancy rates have been 1% or lower the past ten years in Christie Downs, $270-290 per week would be realistic.